CN114468734B - Cooking appliance and control method thereof - Google Patents

Cooking appliance and control method thereof Download PDF

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Publication number
CN114468734B
CN114468734B CN202011255046.XA CN202011255046A CN114468734B CN 114468734 B CN114468734 B CN 114468734B CN 202011255046 A CN202011255046 A CN 202011255046A CN 114468734 B CN114468734 B CN 114468734B
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China
Prior art keywords
temperature
cooking
cooking container
bracket
heating device
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CN202011255046.XA
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Chinese (zh)
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CN114468734A (en
Inventor
郑怀旭
程志喜
张帆
吕伟刚
杨云
薛钊强
梅若愚
刘云祥
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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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Priority to CN202011255046.XA priority Critical patent/CN114468734B/en
Publication of CN114468734A publication Critical patent/CN114468734A/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 utensil and a control method of the cooking utensil, the cooking utensil comprises: a cooking body including a cooking container and a heating device for heating the cooking container; the cover body assembly is buckled with the cooking main body, and a cooking cavity is defined between the cover body assembly and the cooking main body; a temperature detecting device which contacts 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 to obtain the air pressure in the cooking cavity according to the detection result of the temperature detection device. According to the cooking utensil provided by the embodiment of the invention, the temperature detection device is arranged in the cooking utensil, 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 from 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 related art, an NTC temperature detecting device is usually disposed on a pot cover assembly to directly sense the temperature of gas in a pot, but if water in the pot is not boiled, the temperature of gas detected by the temperature detecting device cannot be used as a cooking basis, and the pot cover assembly is generally provided with a power supply, so that the pot cover assembly cannot be detached alone for cleaning, which results in difficult cleaning.
The bottom of the inner pot of the other cooking utensil is provided with a pressure switch, the pressure switch is utilized to sense the downward moving position of the inner pot to detect and control the pressure, but the deformation of the pressure switch is gradually attenuated, and the service life of the product is influenced.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to propose a cooking appliance that performs inductive control of the overall cooking process, while increasing the service life of the product.
The invention further provides a control method of the cooking utensil.
According to an embodiment of the first aspect of the present invention, a cooking appliance 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 in a state that the cover body assembly is buckled with the cooking main body; a temperature detecting device that contacts 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 to obtain the air pressure in the cooking cavity according to the detection result of the temperature detection device.
According to the cooking utensil provided by the embodiment of the invention, the temperature detection device is arranged in the cooking utensil, 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 from a power supply, and the detachable cleaning is realized.
According to some embodiments of the invention, the temperature detecting device is arranged below the cooking container, and the temperature detecting device is in contact with the outer surface of the bottom wall of the cooking container.
According to some embodiments of the invention, the temperature detecting device includes: a detection body in contact with a wall of the cooking container; and the heat insulation part extends along the circumferential direction of the detection body and separates the detection body from the heating device.
In some embodiments, an end of the detecting body facing the cooking container protrudes outside the heat insulating part, and a length of the detecting body protruding outside the heat insulating part is 1mm-5mm; and/or, the temperature detection device comprises: the cooking device comprises a support and an elastic piece, wherein 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 detecting device comprises a bracket and an elastic piece, the detecting body is arranged on the bracket, the detecting body is arranged on the cooking main body through the bracket, and the elastic piece 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 insulation portion; or a sealing element is arranged between the support and the detection body, and the sealing element forms the heat insulation part.
In some specific examples, the temperature detecting device comprises a bracket and an elastic piece, the detecting body is arranged on the bracket, the detecting body is arranged on the cooking main body through the bracket, and the elastic piece 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.
In some embodiments, the support is movably mounted on the bottom wall of the outer pan, the support has a first limit portion, and the elastic member is fitted between the first limit 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: the first support seat is at least partially arranged on the outer side of the bottom wall of the outer pot; the first support cover, at least a portion of first support cover is located the diapire inboard of outer pot, first support cover with at least one of first support seat pass the through-hole and with another cooperation, with the detection body is located the diapire of outer pot, wherein, at least one of first support cover and the first support seat forms thermal-insulated portion.
In some embodiments, the first support cover surrounds the detection body, the first support cover being a piece of high temperature resistant material to form the thermal insulation; and/or the first limit 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 being stopped against the heating device so as to limit the bracket between the bottom wall of the outer pot and the heating device; the support comprises a second support seat and a second support cover, the second support cover is connected with the second support seat, one end of the detection body, which faces the cooking container, extends out of the second support cover, a sealing element is arranged between the second support 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 which is suitable for the detection probe of the detection body to penetrate out, 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 a control method of a cooking appliance according to an embodiment of a 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 detecting 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 detecting device, the control method includes the steps of: 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 utensil, 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-grade water quantity or the second-grade water quantity can be judged, so that the influence degree of the heating device on the detection result of the temperature detection device is known, 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 acquired air pressure condition in the cooking cavity is reduced, and the condition that the direct heating air pressure is too high is prevented.
According to some embodiments of the invention, the acquiring the temperature rise rate of the cooking container includes: controlling the temperature detection device to detect the temperature of the cooking container as a first temperature, and starting timing; ending the timing when the temperature detection device detects that the temperature of the cooking container reaches a second temperature; a rate of temperature rise of the cooking vessel over a timed period is calculated.
According to some embodiments of the invention, the controlling the heating device according to the comparison result includes: 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 smaller than or equal to the preset value, calculating the heating time required by 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 heating time 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 a set temperature further comprises: the heating device is controlled 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 intermittently heat includes: and controlling the heating device to intermittently heat until the temperature of the cooking container reaches the set temperature for the nth time.
In some embodiments, after the controlling the heating device to continue heating until the time for which the heating device continues heating reaches the heating time, further comprising: determining that the current temperature of the cooking container is smaller than the set temperature, and recalculating the heating time required by 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 which the heating device continues heating 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 foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
Fig. 1 is an assembly schematic view of a cooking appliance according to an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a shown in fig. 1;
fig. 3 is an exploded view of a part of the structure of the cooking appliance shown in fig. 1;
fig. 4 is an assembly schematic view of a cooking appliance according to another embodiment of the present invention;
fig. 5 is an enlarged view of the portion B shown in fig. 4;
fig. 6 is an exploded view of a part 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:
the cooking appliance 100 is provided with a pair of cooking devices,
cooking body 10, cooking vessel 101, heating device 102, opening 1021, outer pot 103, through hole 1031,
the cover assembly 20 is configured to be secured to the housing,
the temperature detecting device 30 detects the body 301, the bracket 302, the first bracket seat 3021, the first bracket cover 3022, the first limiting portion 3023, the second bracket seat 3024, the second bracket cover 3025, the second limiting portion 3026, the sealing member 3027, and the elastic member 303.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the 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: a cooking body 10, a cover assembly 20, a temperature detecting device 30, and a control device.
The cooking body 10 comprises a cooking vessel 101 for placing food to be processed, and a heating device 102 for heating 301 the cooking vessel 101. The cover assembly 20 has a locking tooth locked 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 locked with the cooking body 10. Wherein the cover assembly 20 is detachably provided to the cooking body 10, or the cover assembly 20 is pivotably provided to the cooking 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 operate, the heating device 102 heats the cooking container 101, the temperature of the cooking container 101 increases, the temperature detecting 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 equal ratio conversion principle of the temperature value and the air pressure value detected by the temperature detection device 30, so as to control the pressure in the cooking cavity, thereby not only realizing the cooking requirement, but also realizing the advantages of no electrification of the cover body assembly 20, simple assembly, long service life and the like.
Specifically, as the temperature of the cooking vessel 101 increases during cooking, the steam in the cooking vessel 101 increases and the air pressure in the cooking cavity increases. The temperature of the cooking container 101 is sensed by the temperature detecting device 30, the pressure change in the cooking container 101 can be obtained by analyzing the temperature change in the cooking container 101, and the heating device 102 can be controlled by the control device to heat the cooking container 101 with different powers.
Thereby, by detecting the temperature of the cooking container 101 and thereby knowing the change of the pressure in the cooking container 101, it is not necessary to provide a pressure sensor in the related art. 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 present invention, by contacting the temperature detecting device 30 with the wall of the cooking container 101, not only can the temperature change of the cooking container 101 during the whole cooking process be detected and the air pressure in the cooking cavity be obtained according to the detected temperature, but also the cover 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, a temperature detecting device 30 is provided under a cooking container 101, and the temperature detecting device 30 is in contact with the outer surface of the bottom wall of the cooking container 101.
That is, the temperature detecting device 30 can detect the temperature change of the outer bottom wall of the cooking container 101 in the whole course of the cooking process of the cooking appliance 100, thereby obtaining the pressure change in the cooking cavity according to the detected temperature value, realizing the pressure control, and realizing the effect of the cover assembly 20 not being electrified, facilitating the cleaning of the cover assembly 20, and making the assembly process of the temperature detecting device 30 simpler.
As shown in fig. 2, according to some embodiments of the present invention, the temperature detecting device 30 includes: the detecting body 301 and the heat insulating portion, the detecting body 301 contacts with the wall of the cooking container 101, the heat insulating portion extends along the circumferential direction of the detecting body 301, and the heat insulating portion separates the detecting body 301 from the heating device 102.
Thus, by providing the heat insulating portion in the circumferential direction of the detecting body 301, the heat insulating portion wraps the periphery of the detecting body 301, so that the detecting body 301 is separated from the heating device 102, the detecting body 301 is prevented from directly contacting the heating device 102, the influence of the heating device 102 on the detection of the temperature of the detecting 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 detecting body 301 with the wall of the cooking container 101.
As shown in fig. 2 and 3, in some embodiments, an end of the sensing body 301 facing the cooking container 101 protrudes outside the heat insulating portion, and the length of the sensing body 301 protruding outside the heat insulating portion is 1mm to 5mm.
For example, the length of the detection body 301 protruding outside the heat insulating portion may be 1mm, 2mm, 3mm, 4mm, and 5mm. The heat insulation part is extended from one end of the detection body 301 towards the cooking container 101, only one end of the detection body 301 is in contact with the wall of the cooking container 101, the influence of environmental heat on the detection body 301 in the temperature detection process can be avoided, the length of the extended heat insulation part of the detection body 301 is 1mm-5mm, good contact between the detection body 301 and the cooking container 101 can be ensured, and the temperature of the cooking container 101 can be measured more accurately.
It should be noted that the length of the detecting body 301 extending out of the heat insulation portion should not be too long, so as to avoid being affected by environmental heat. The extension length of the detecting body 301 should not be 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 detecting device 30 includes a bracket 302 and an elastic member 303, the detecting body 301 is provided on the bracket 302, the detecting body 301 is provided on the cooking body 10 through the bracket 302, and the elastic member 303 cooperates with the bracket 302 to normally push the detecting body 301 against the wall of the cooking container 101.
The detection body 301 and the bracket 302 are assembled together, and then the bracket 302 and the detection body 301 are arranged on the cooking main body 10, so that the position of the detection body 301 on the cooking main body 10 can be fixed, the position of the detection body 301 is prevented from moving when the cooking utensil 100 is moved, the accuracy of temperature detection is affected, meanwhile, the corresponding elastic piece 303 is arranged, the elastic piece 303 is matched with the bracket 302, and the elastic piece 303 is used for pushing the detection body 301, so that one end of the detection body 301 is stopped against the wall of the cooking container 101, and the smooth temperature detection is ensured.
As shown in fig. 2 and 3, in some embodiments, at least a portion of the bracket 302 forms an insulation. For example, a portion of the bracket 302 may be made of an insulating material, or the entire bracket 302 may be made of an insulating material.
Therefore, at least a part of the bracket 302 is formed into a heat insulation part, so that the influence of the environmental heat on the temperature detection of the detection body 301 can be isolated by utilizing the bracket 302, 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 can be prolonged.
As shown in fig. 6, in some specific examples, a seal 3027 is provided between the bracket 302 and the detection body 301, the seal 3027 forming an 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 detection 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 provided 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, heating device 102 is disposed between outer pot 103 and cooking container 101, heating device 102 contacts cooking container 101 for heating cooking container 101. The elastic piece 303 is matched 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, one end of the detection body 301 on the bracket 302 is ensured to be abutted against the outer wall of the cooking container 101, and the smooth temperature detection is ensured.
As shown in fig. 1 and 4, in some embodiments, the stand 302 is movably mounted on the bottom wall of the outer pot 103, the stand 302 has a first stop 3023, and the elastic member 303 is fitted between the first stop 3023 and the bottom wall of the outer pot 103.
In the mounting process, if the position of the bracket 302 is deviated, the position of the bracket 302 can be adjusted according to the requirement, so that one end of the detection body 301 on the bracket 302 can be contacted with the bottom wall of the cooking container 101, and the smooth temperature detection is ensured. Meanwhile, when the detecting body 301 is damaged, the mounting and dismounting of the bracket 302 are facilitated. By providing the first limiting portion 3023 on the bracket, and making the size of the first limiting portion 3023 larger than that of the elastic member 303, the elastic member 303 is prevented from being oversized and being disengaged from the bracket 302, so that the positioning and pushing effects on the detecting body 301 cannot be achieved.
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 seat 3021 and a first bracket cover 3022, at least a portion of the first bracket seat 3021 is disposed outside the bottom wall of the outer pot 103, at least a portion of the first bracket cover 3022 is disposed inside the bottom wall of the outer pot 103, and at least one of the first bracket cover 3022 and the first bracket seat 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 seat 3021 forms a heat insulating portion.
Specifically, the first bracket cover 3022 and the first bracket seat 3021 may be fastened and fixed up and down, so that the assembly process is simpler and more convenient. Of course, the first bracket cover 3022 and the first bracket seat 3021 may be provided with mounting holes, respectively, so that the two may be connected together by a fastener, thereby making the connection stronger.
The first bracket cover 3022 is assembled with the first bracket seat 3021, and the bracket 302 may pass through the through hole 1031 of the bottom wall of the outer pot 103 and may move along the center line of the through hole 1031, and since the elastic member 303 is disposed between the bracket 302 and the outer pot 103, it is ensured that the bracket 302 moves under the action of the external force, and returns under the action of the elastic member 303 after the external force is removed. In this process, the detecting body 301 moves along with the bracket 302, ensuring that one end of the detecting body 301 can be in contact with the bottom wall of the cooking container 101.
As shown in fig. 1-3, in some embodiments, a first support cover 3022 surrounds the detection body 301, the first support cover 3022 being a piece of high temperature resistant material to form an insulation. The first support cover 3022 wraps the periphery of the detecting body 301, exposes one end of the detecting body 301, and is only used for detecting temperature change by contacting one end of the detecting body 301 with the wall of the cooking container 101, so that the influence of the heating device 102 on the temperature measurement of the detecting body 301 can be avoided, and the accuracy of temperature detection is ensured.
As shown in fig. 2 and 3, in some specific examples, a first stop 3023 is formed on one of the first bracket base 3021 and the first bracket cover 3022. Specifically, the first limiting portion 3023 may be formed on the first bracket seat 3021 or on the first bracket cover 3022, but it is necessary to ensure that the size of the first limiting portion 3023 is larger than that of the elastic member 303, so as to prevent the elastic member 303 from being disengaged from the first limiting portion 3023. By providing the first limiting portion 3023, the elastic member 303 can be limited, and the accuracy of the temperature detection device 30 for detecting the temperature can be ensured.
As shown in fig. 4 to 6, in some specific examples, the stand 302 is movably disposed between the bottom wall of the outer pot 103 and the heating device 102, where the stand 302 has a second limiting portion 3026, and the second limiting portion 3026 is adapted to abut against the heating device 102, so as to limit the stand 302 between the bottom wall of the outer pot 103 and the heating device 102, ensure that one end of the detecting body 301 on the stand 302 may abut against the cooking container 101, and avoid that the stand moves the position of the detecting body 301 during the movement of the cooking container 101, which affects the accuracy of temperature detection.
As shown in fig. 4-6, in some embodiments, the bracket 302 includes a second bracket seat 3024 and a second bracket cover 3025, the second bracket cover 3025 being coupled to the second bracket seat 3024. Wherein, the end of the detecting body 301 facing the cooking container 101 extends out of the second support cover 3025, a sealing member 3027 is arranged between the second support cover 3025 and the detecting body 301, and the sealing member 3027 forms a heat insulation part.
Thus, by connecting the second holder cover 3025 with the second holder base 3024 and disposing the detecting body 301 on the holder 302, the position of the detecting body 301 can be fixed by the holder 302 while the detecting body 301 protrudes out of the second holder cover 3025 toward the one end of the cooking container 101, and abuts against the bottom wall of the cooking container 101 for detecting 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 possible to avoid that the heat conducted from the heating device 102 to the second holder cover 3025 affects the detection body 301, i.e. to avoid that the detection body 301 is affected by the heating device 102 when detecting the temperature of the bottom wall of the cooking container 101, resulting 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 adapted to pass through the detection probe of the detection body 301, the second stop 3026 is formed on the second holder 3024 or the second holder cover 3025, and the second stop 3026 is adapted to abut against an edge of the opening 1021. By arranging the second limiting part 3026 on the second bracket seat 3024 or the second bracket 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 bracket cover 3025 is limited, the whole bracket 302 is prevented from passing through the heating device 102 and the position of the bracket 302 cannot be fixed while the detection probe of the detection body 301 passes through the opening 1021.
A specific embodiment of the 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: a cooking body 10, a cover assembly 20, a temperature detecting device 30, and a 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 provided between the heating plate and the outer pot 103, and contacts 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 and sends a signal to the control device, and the control device analyzes the temperature detection result of the temperature detecting device 30, thereby obtaining the air pressure in the cooking cavity.
Wherein the temperature detecting device 30 includes: the detecting body 301, the heat insulating portion, the elastic member 303, and the holder 302. One end of the detecting body 301 facing the cooking container 101 protrudes outside the heat insulating portion, and the length of the detecting body 301 protruding outside the heat insulating portion is 1mm to 5mm. 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 piece 303 is matched with the bracket 302 to normally push the detection body 301 to stop against the wall of the cooking container 101, so 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 utensil comprises a cooking container, a cover body assembly and a heating device, wherein the cover body assembly is suitable for limiting a cooking cavity between the cover body assembly and the cooking container, and the heating device is used for heating the cooking container. The cooking utensil further comprises a temperature detection device, wherein the temperature detection device is used for detecting the temperature of the cooking container, and the cooking utensil 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 the 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.
Since the temperature detecting device is used for measuring the temperature of the cooking container, that is, the temperature detecting device can directly measure the temperature of the wall of the cooking container, which is in contact with the wall of the cooking container, and the temperature of the wall of the cooking container is different from the actual temperature in the cooking cavity.
It should be noted that, the heating device may be disposed at the bottom of the cooking container, so as to realize bottom heating, and the temperature detecting device is disposed close to the heating device, so that the temperature detecting 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 realize side heating, and the temperature detecting device may directly detect the side temperature of the cooking container.
According to the control method of the cooking utensil, 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-grade water quantity or the second-grade water quantity can be judged, so that the influence degree of the heating device on the detection result of the temperature detection device is known, 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 acquired 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. 7-8, according to some embodiments of the present invention, acquiring a temperature rise rate of a cooking container includes:
S21: controlling a temperature detection device to detect the temperature of the cooking container to be a first temperature, and starting timing;
s22: ending the timing when the temperature detection device detects that the temperature of the cooking container reaches the second temperature;
s23: the rate of temperature rise of the cooking vessel over a timed period is calculated.
Specifically, in some examples, after the heating device heats the cooking container for a period of time, the temperature detecting device detects the temperature of the cooking container as the first temperature T1, and starts timing, so that the influence of the ambient temperature on the detection result is avoided, as the heating device continues to heat the cooking container, the temperature of the cooking container continues to rise, when the temperature detecting device detects that the temperature of the cooking container rises to the second temperature T2, the timing is ended, the timing time is recorded as T, and thus the temperature rising speed N of the cooking container in the timing time period, that is, the temperature rising speed is equal to (T2-T1)/T, is calculated.
In other examples, after the cooking appliance is started, the temperature detecting device is firstly controlled to detect the temperature of the cooking container, the temperature of the cooking container at the moment is recorded to be the first temperature T1, the heating device is controlled to heat the cooking container and start timing is started, then when the temperature detecting device detects that the temperature of the cooking container reaches the second temperature T2, timing is ended, the timing time is recorded to be T, and therefore the temperature rising speed N of the cooking container in the timing time period, namely the temperature rising speed is equal to (T2-T1)/T, is calculated.
As shown in fig. 7 and 9, according to some embodiments of the present invention, controlling a heating device according to a 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 the set temperature;
and determining that the temperature rising speed is smaller than or equal to a preset value, calculating the heating time required by 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 heating time of the heating device 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, so if the heating device needs to heat the water in the cooking container to the set temperature, the heating device has a long time, the influence of the heating device on the detection result of the temperature detection device is great, and the actual temperature rising speed of the cooking container is much greater than the temperature rising speed calculated in the step S2 during the heating process of the cooking container, so if the heating device is controlled by adopting the heating time, the heating device needs to be repeatedly heated to reach the working pressure. In the present embodiment, by directly controlling the heating device at the set temperature, the heating time of the heating device can be shortened, 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 smaller than the preset value, the water quantity in the cooking container is known to be the second-level water quantity, so that if the heating device needs to heat the water in the cooking container to the set temperature, the time required by the heating device to heat the water in the cooking container is short, the influence of the heating device on the detection result of the temperature detection device is small, in the embodiment, the control of the pressure in the cooking cavity can be realized by controlling the heating device by the calculated heating time, 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 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 intermittently heat includes: the heating device is controlled 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 to raise the temperature of the cooking container from the second temperature T2 to the set temperature, then the heating device is controlled to stop heating, when the temperature detecting device detects that the temperature of the cooking container is reduced and is 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, so that the heating device reciprocates, when the nth time (for example, the 3 rd time) of the temperature of the cooking container reaches the set temperature, the working state of the cooking appliance is displayed, that is, when the air pressure in the cooking cavity reaches the working pressure (for example, 40 Kpa), 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 when the heating device continues heating reaches the heating time, further includes:
determining that the current temperature of the cooking container is smaller than the set temperature, recalculating the heating time required by 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 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 period reaching the first calculated heating time period, when the temperature detection device detects that the current temperature of the cooking container is smaller than the set temperature, the time required by 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 rising speed, and the heating device is controlled to continue heating until the time of continuing heating of the heating device reaches the recalculated heating time period. When the temperature detection device detects that the current temperature of the cooking container is not increased any more and is higher than the set temperature, the cooking utensil is displayed to be in a working state, namely, the air pressure in the cooking cavity reaches the working pressure (for example, 40 Kpa) at the moment, the cooking countdown is started, and when the countdown is completed, the cooking stage is completed.
In some embodiments, the set temperature is 75 ℃ to 85 ℃. For example, the set temperature may be 75 ℃, 78 ℃, 80 ℃, 82 ℃, 85 ℃, or the like.
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 should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present 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 of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (16)

1. A control method of a cooking appliance, wherein the cooking appliance comprises a cooking container, a cover assembly and a heating device for heating the cooking container, the cover assembly is suitable for limiting a cooking cavity with the cooking container, the cooking appliance further comprises a temperature detection device for detecting the temperature of the cooking container, the cooking appliance obtains the air pressure in the cooking cavity according to the detection result of the temperature detection device, and 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;
comparing the temperature rising speed with a preset value, and controlling the heating device according to a comparison result;
The control of the heating device according to the comparison result includes:
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 smaller than or equal to the preset value, calculating the heating time required by 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 heating time of the heating device reaches the heating time.
2. The control method of the cooking appliance according to claim 1, wherein the acquiring the temperature rise speed of the cooking vessel includes:
controlling the temperature detection device to detect the temperature of the cooking container as a first temperature, and starting timing;
ending the timing when the temperature detection device detects that the temperature of the cooking container reaches a second temperature;
a rate of temperature rise of the cooking vessel over a timed period is calculated.
3. The method of controlling a cooking appliance according to claim 1, wherein the controlling the heating device to continue heating until the temperature of the cooking container reaches a set temperature further comprises: the heating device is controlled to intermittently heat so that the temperature of the cooking container is not higher than the set temperature.
4. The control method of a cooking appliance according to claim 1, wherein the controlling the heating device to intermittently heat includes: and controlling the heating device to intermittently heat until the temperature of the cooking container reaches the set temperature for the nth time.
5. A control method of a cooking appliance according to claim 3, wherein the controlling the heating device to continue heating until after the time for which the heating device continues heating reaches the heating time, further comprises:
determining that the current temperature of the cooking container is smaller than the set temperature, and recalculating the heating time required by 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 which the heating device continues heating 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.
6. A control method of a cooking appliance according to claim 3, wherein the set temperature is 75-85 ℃.
7. 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 in a state that the cover body assembly is buckled with the cooking main body;
a temperature detecting device which is in contact with a wall of the cooking container to detect a temperature of the cooking container, and acquires a temperature rising speed of the cooking container;
the control device is communicated with the temperature detection device to obtain the air pressure in the cooking cavity according to the detection result of the temperature detection device, and the control device is further used for:
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 smaller than or equal to the preset value, calculating the heating time required by 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 heating time of the heating device reaches the heating time.
8. The cooking appliance of claim 7, wherein the temperature detecting means is provided below the cooking container, the temperature detecting means being in contact with an outer surface of a bottom wall of the cooking container.
9. The cooking appliance of claim 7, wherein the temperature detecting means comprises:
a detection body in contact with a wall of the cooking container;
and the heat insulation part extends along the circumferential direction of the detection body and separates the detection body from the heating device.
10. The cooking appliance according to claim 9, wherein an end of the detecting body facing the cooking container protrudes outside the heat insulating portion, and a length of the detecting body protruding outside the heat insulating portion is 1mm to 5mm; and/or the number of the groups of groups,
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.
11. The cooking appliance of claim 9, wherein the temperature detecting means comprises a bracket and an elastic member, the detecting body is provided to the bracket, the detecting body is provided to the cooking body through the bracket, and the elastic member cooperates with the bracket to normally push the detecting body against a wall of the cooking container;
Wherein at least a portion of the bracket forms the thermal insulation portion; or a sealing element is arranged between the support and the detection body, and the sealing element forms the heat insulation part.
12. The cooking appliance of claim 9, wherein the temperature detecting means comprises a bracket and an elastic member, the detecting body is provided to the bracket, the detecting body is provided to the cooking body through the bracket, and the elastic member cooperates with the bracket to normally push the detecting body against a 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.
13. The cooking appliance of claim 12, wherein the bracket is movably mounted to the bottom wall of the outer pan, the bracket having a first stop portion, the resilient member being fitted between the first stop portion and the bottom wall of the outer pan.
14. The cooking appliance of claim 13, wherein the bottom wall of the outer pan has a through hole, and the bracket comprises:
The first support seat is at least partially arranged on the outer side of the bottom wall of the outer pot;
a first bracket cover, 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 passes 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 leg cover and the first leg base forms the heat insulating portion.
15. The cooking appliance of claim 14, wherein the first bracket cover surrounds the detection body, the first bracket cover being a high temperature resistant material to form the thermal insulation; and/or the first limit part is formed on one of the first bracket seat and the first bracket cover.
16. The cooking appliance of claim 12, wherein the bracket is movably disposed between the bottom wall of the outer pan and the heating device, the bracket having a second stop portion adapted to stop against the heating device to limit the bracket between the bottom wall of the outer pan and the heating device;
The support comprises a second support seat and a second support cover, the second support cover is connected with the second support seat, one end of the detection body, which faces the cooking container, extends out of the second support cover, a sealing element is arranged between the second support 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 which is suitable for the detection probe of the detection body to penetrate out, 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.
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