CN114424881A - Intelligent pot - Google Patents

Intelligent pot Download PDF

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Publication number
CN114424881A
CN114424881A CN202111648214.6A CN202111648214A CN114424881A CN 114424881 A CN114424881 A CN 114424881A CN 202111648214 A CN202111648214 A CN 202111648214A CN 114424881 A CN114424881 A CN 114424881A
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CN
China
Prior art keywords
pot
temperature
set value
thermocouple
value
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CN202111648214.6A
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Chinese (zh)
Inventor
李明守
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Individual
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Individual
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Priority to CN202111648214.6A priority Critical patent/CN114424881A/en
Publication of CN114424881A publication Critical patent/CN114424881A/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
    • A47J27/004—Cooking-vessels with integral electrical heating means
    • 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
    • A47J27/56—Preventing boiling over, e.g. of milk
    • 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
    • A47J36/24—Warming devices
    • A47J36/2483—Warming devices with electrical heating means

Abstract

The invention belongs to the field of cookers, and particularly discloses an intelligent pot which comprises a pot body, a handle, a thermocouple and a pot controller, wherein the thermocouple is assembled at the bottom of the pot body, and the pot controller is arranged in the handle. The pot controller obtains a corresponding cooking program, the cooking program is configured with a set value of the pot temperature relevant to time, a measured value of the pot temperature detected by the thermocouple and the set value of the pot temperature obtained from the cooking program are processed, a control signal is generated to operate a heating device for heating the intelligent pot, the firepower of the heating device is changed, the measured value of the pot temperature reaches the set value of the pot temperature, and the cooking program is executed by the pot controller until the cooking program is finished, so that the cooking of food is finished. In whole culinary art in-process, heating device is controlled based on the culinary art form of acquireing to the intelligence pot, and the temperature of automatic control intelligence pot accomplishes food culinary art, need not the user and participates in, and the user has or not culinary art skill, all can make delicious food.

Description

Intelligent pot
Technical Field
The invention relates to an intelligent pot, in particular to an intelligent pot with a built-in pot controller and capable of achieving automatic cooking according to a cooking program, which is suitable for automatically cooking soup, cooking rice, cooking porridge, pancake and the like, and belongs to the field of pots.
Background
The intelligent pot in the prior art can detect the temperature of the pot, has the overtemperature alarm function according to the set temperature, but does not have the function of analyzing the firepower size required by the pot, and often needs a user to control the firepower size and time of a heating pot on site and remotely when the intelligent pot is used for cooking, so that automatic cooking cannot be realized. However, for cooking such as soup making, rice cooking, porridge cooking, pancake cooking, food material loading into a pot, and ignition cooking, automatic cooking is expected to be realized by controlling only the heating power of the pot and the duration of the heating power without turning over the pot in real time. The intelligent pot can well solve the problems, is suitable for automatically cooking soup, cooking rice, cooking porridge and pancake, does not need user participation during cooking, and can be used for making delicious food with or without cooking skills.
Disclosure of Invention
The present invention has been made in view of the above problems occurring in the prior art, and it is an object of the present invention to provide an intelligent pot which automatically controls the amount of thermal power required based on a set temperature value, and automatically cooks food, which is suitable for cooking such as soup making, rice cooking, porridge cooking, and pancake cooking, and which does not require user's participation during the cooking.
The invention provides an intelligent pot, which comprises a pot body, wherein the pot body consists of a pot body part and a pot bottom part which are fixedly connected, and the intelligent pot is characterized in that:
the electric cooker also comprises a thermocouple and a cooker controller for cooking control, wherein the thermocouple is assembled with the bottom of the cooker and used for detecting the temperature of the bottom of the cooker;
the pot controller acquiring a cooking program corresponding to food to be cooked, the cooking program being configured with a set value of a pot temperature associated with time; in each control period, the pot controller acquires a set value of the pot temperature from the cooking program by adopting an interpolation method, the pot controller processes the set value of the pot temperature acquired from the cooking program based on the measured value of the pot temperature detected by the thermocouple, generates a control signal comprising the fire power required by cooking, and sends the control signal to a heating device for heating the intelligent pot, and the heating device adjusts the fire power based on the received control signal, so that the measured value of the pot temperature reaches the set value until the cooking program is executed, and the food cooking is finished.
The intelligent pot of the embodiment comprises a pot body, a thermocouple, a pot controller and a cooking program arranged in the pot controller. When cooking food, the pot controller acquires a cooking program corresponding to the food to be cooked, based on the cooking program, the pot controller collects a measured value of the pot temperature detected by the thermocouple and a set value of the pot temperature acquired from the cooking program, processes based on the measured value of the pot temperature and the set value of the pot temperature, generates a control signal including the firepower required for heating the pot body, and sends the control signal to a heating device for heating the pot body, the heating device can be one of a gas stove, a resistance furnace and an electromagnetic oven, the controller of the heating device generates a control signal based on the received control signal to adjust the firepower of the heating device, so that the measured value of the pot temperature detected by the thermocouple reaches the set value of the pot temperature, the pot controller operates the firepower of the heating device to make the pot temperature reach the set temperature, and automatically cooks the food without user participation, the users can make delicious food with or without cooking skills. In addition, the thermocouple measures the temperature in the center of the bottom of the pot, and the temperature can reflect the temperature of the pot to be controlled, so that the accuracy of temperature detection is improved.
In another embodiment of the present invention, the intelligent pot in the above embodiment is further configured with an overflow sensor for detecting an overflow state including liquid overflow or an overflow condition that is about to overflow and has not been overflowed.
In this embodiment, the pot controller collects a detection signal of the overflow pot sensor, and based on the detection signal of the overflow pot sensor, when it is determined that the intelligent pot has an overflow pot state, the pot controller generates a control signal including a reduction in required fire power and sends the control signal to the heating device, and the controller of the heating device generates the control signal based on the control signal for reducing the fire power of the heating device, eliminating the overflow pot, and reducing or even avoiding the overflow pot. Meanwhile, the pot controller counts the number of the overflowing pot, when the number of the overflowing pot is larger than the counting threshold value, the pot controller reduces the set value of the temperature deviation value in the cooking program or/and reduces the set value of the temperature of the program step corresponding to the overflowing pot in the cooking program until the overflowing pot state is eliminated, and the cooking program is automatically optimized.
Advantageous effects
The intelligent pot controls the size of the needed firepower, controls the pot temperature, automatically cooks food and does not need user participation. The intelligent pot is configured with a thermocouple, a pot controller and a cooking program arranged in the pot controller, and the thermocouple is assembled at the bottom of the intelligent pot. When cooking food, the pot controller acquires a cooking program corresponding to the food to be cooked, acquires a measured value of the pot temperature detected by the thermocouple and a set value of the pot temperature from the cooking program based on the cooking program in each control period, processes the measured value of the pot temperature and the set value of the pot temperature to generate a control signal including firepower required for heating the pot body, and sends the control signal to a heating device for heating the pot body, and the controller of the heating device generates the control signal based on the received control signal to adjust the firepower of the heating device, so that the measured value of the pot temperature detected by the thermocouple reaches the set value of the pot temperature acquired from the cooking program until the time configured in the cooking program is executed. The pot controller controls the firepower of the heating device, food is automatically cooked, users do not need to participate, and the users can cook food with or without cooking skills.
The intelligent pot automatically optimizes the cooking program and avoids the occurrence of pot overflow. The intelligent pot is provided with an overflow sensor for detecting the overflow state of liquid overflowing from the pot body or the overflow condition of the intelligent pot has the overflow state which is about to overflow and is not overflowed. The pot controller gathers the detected signal of the excessive pot sensor, and based on the detected signal of the excessive pot sensor, when the state of the excessive pot is determined, the pot controller generates the control signal including the reduction of the needed firepower, and sends the control signal to the heating device, the controller of the heating device generates the control signal based on the control signal to reduce the firepower of the heating device, eliminates the excessive pot, and avoids the excessive pot from occurring. Meanwhile, the pot controller counts the number of the overflowing pot, when the number of the overflowing pot is larger than the counting threshold value, the pot controller reduces the temperature deviation value in the cooking program or/and reduces the set value of the temperature of the program step corresponding to the overflowing pot in the cooking program, so as to reduce or even eliminate the overflowing pot.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent pot in embodiment 1.
Fig. 2 is an exploded view of the smart pot of fig. 1.
Fig. 3 is a partial enlarged view of the area a in fig. 2.
Fig. 4 is a schematic structural diagram of another intelligent pot.
Fig. 5 is a schematic structural diagram of an intelligent pot in embodiment 2.
Fig. 6 is a schematic structural diagram of another intelligent pot.
Fig. 7 is a schematic structural diagram of another intelligent pot.
Fig. 8 is a control schematic block diagram of the intelligent pot.
The intelligent pot comprises 100-an intelligent pot, 110-a pot body, 111-a pot body, 112-a pot bottom, 113-a detection hole, 1131-a detection part, 1132-a limit step, 1133-a 1 st clamping part, 1134-a plug, 1135-an elastic part, 114-a pot body groove, 115-a pot body groove cover, 1151-a 2 nd clamping part, 1152-a clamping step, 130-a thermocouple, 131-a measurement part, 120-a grab handle, 121-a handle body, 122-a 1 st heat insulation part, 123-a 2 nd heat insulation part, 140-a pot controller, 150-an overflowing pot sensor, 160-a water collecting groove, 116-a fixed cover, 1161-a cover groove, 117-a containing cover and 1171-a containing groove.
Detailed Description
In order to clarify the technical solution and technical object of the present invention, the present invention will be further described with reference to the accompanying drawings and the detailed description. The directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the movement, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
As a first embodiment of the present invention, a smart pot, as shown in fig. 1-2, the smart pot 100 includes a pot body 110, a handle 120, a thermocouple 130, a pot controller 140, and a cooking program embedded in the pot controller 140. The pot body 110 includes a pot body 111 and a pot bottom 112, and the pot body 111 and the pot bottom 112 are fixed to each other to form a container with an open upper end for containing liquid. The pot body part 111 and the pot bottom part 112 are integrally formed, and the material can be cast iron, or the materials commonly used in pot manufacturing such as aluminum, stainless steel and the like. The pan bottom 112 is provided with a sensing hole 113 for receiving the thermocouple 130, the sensing hole 113 is located in the pan bottom wall, and the thermocouple 130 and the sensing hole 113 are assembled for sensing the temperature of the pan bottom 112, such as the temperature of the middle portion of the pan bottom 112. The thermocouple 130 and the pan controller 140 are electrically connected. The handle 120 is fixed with the pot body 111. The pan controller 140 is disposed within the grip 120. The pan controller 140 is a control center of the intelligent pan, and is used for controlling the temperature of the intelligent pan to reach a set temperature, so as to realize automatic cooking. The intelligent pot of the embodiment is suitable for cooking food which is not needed to be turned over frequently, such as cooking soup, cooking rice, cooking porridge, pancake and the like. The intelligent pot 100 is matched with an external heating device for use, and the intelligent pot 100 is in communication connection with the heating device, preferably in wireless communication connection, so that the pot is convenient to use. The heating device is used for heating the intelligent pot 100, and can be a gas stove, a resistance furnace, an induction cooker or the like. The heating device starts ignition based on the received control signal from the intelligent pot 100, and adjusts the firepower so that the temperature of the pot reaches the set value of the temperature. When cooking food, the pot controller 140 acquires a cooking program corresponding to the food to be cooked, the cooking program is configured with a set value of pot temperature associated with time, the pot controller 140 collects a measured value of the pot temperature detected by the thermocouple 130 and acquires the set value of the pot temperature from the cooking program, an operation process is performed based on the measured value of the pot temperature and the set value of the pot temperature to generate a control signal corresponding to required fire power, the pot controller 140 sends the control signal to the heating device, and the heating device adjusts the fire power based on the received control signal to enable the measured value of the pot temperature to reach the set value of the pot temperature until the cooking program is executed, so that the cooking of the food is completed.
The detection hole 113 is a hole whose end surface is circular, and as shown in fig. 2 and 3, the detection hole 113 is disposed in the pan bottom 112, is located inside the bottom wall of the pan bottom 112, and is arranged in the radial direction. The detection hole 113 is a blind hole, and includes a blind end portion, a hole portion, and a hole end portion in this order from left to right as shown in fig. 2. The blind end of the detection hole 113 is located at the middle side of the pan bottom 112, such as the center; the end of the detecting hole 113 is located at the connecting area of the pot body 111 and the pot bottom 112, and is located under, i.e. directly under, the handle 120. The hole end of the detection hole 113 is provided with a limiting step 1132 and a 1 st clamping part 1133, as shown in fig. 3, the limiting step 1132 is arranged above the hole end of the detection hole 113 and is positioned on the inner surface side of the pot, and the limiting step 1132 protrudes towards the inside (i.e. downward) direction of the hole to form a step; the 1 st catching part 1133 is disposed below the hole end of the detection hole 113 on the outer surface side of the pot, and the 1 st catching part 1133 is a convex part extending outward (i.e., rightward) from the hole end in the radial direction. In this way, the blind end of the detection hole 113 is used as the detection part 1131 for measuring the temperature of the pot bottom 112, so that the thermocouple 130 detects the temperature of the central part of the pot, and the temperature at the position can reflect the actual temperature of the pot more accurately, which is beneficial to improving the accuracy of temperature measurement. The outer surface of the pot body part 111 is provided with a pot body groove 114 and a pot body groove cover 115, as shown in fig. 2. The pot body groove 114 may be a square groove extending from the bottom to the top along the outer surface of the pot body part 111 for accommodating a thermocouple wire, which is a connection wire between the thermocouple 130 and the controller 140. The pot body groove 114 is disposed at the side of the handle 120, below, e.g., right below, the handle 120, and above, e.g., right above, the hole end of the detection hole 113. The lower end part of the pot body groove 114 is communicated with the hole end part of the detection hole 113. With the arrangement, the detection hole 113 and the pot body groove 114 are in the same plane. The curvature radius of pot body groove cover 115 is unanimous with the curvature radius of pot body portion 111 of pot body recess 114 place, and pot body groove cover 115 and pot body recess 114 cooperate, are set up a plurality of outside convex calorie melons on the left and right sides (looking towards the groove cover surface when) both sides wall respectively of pot body groove cover 115, set up a plurality of inside sunken being used for holding and chucking correspondingly on the both sides wall of pot body recess 114 the card portion of calorie melon. The lower end of the pot body groove cover 115 is provided with a protrusion extending outward along the end surface thereof for engaging and fixing the lower end of the pot body groove cover 115 with the hole end of the detection hole 113, the protrusion is referred to as a 2 nd retaining part 1151, and a retaining step 1152 is further provided above the 2 nd retaining part 1151. The thermocouple 130 has a cylindrical shape, and the measurement portion 131 of the thermocouple 130 is provided at an end portion thereof, such as the left end portion shown in fig. 2. The thermocouple 130 is inserted into the detection hole 113 from the hole end of the detection hole 113, and the measurement portion 131 of the thermocouple 130 and the detection portion 1131 (i.e., the blind end) of the detection hole 113 are bonded to each other; and then the plug 1134 and the spring forming the elastic element 1135 are sequentially installed at the hole end of the detection hole 113, the plug 1134 is held by the limit step 1132, the spring is in a compressed state, and the spring applies inward (i.e., leftward) pressure to the thermocouple 130, so that the measurement part 131 of the thermocouple 130 and the detection part 1131 (i.e., a blind end) of the detection hole 113 are tightly attached, thereby reducing the thermal contact resistance between the thermocouple 130 and the detection hole 113 and being beneficial to improving the accuracy of temperature detection. In addition, the detecting part 1131 is connected to the upper and lower wall parts of the detecting hole 113, and there is no gap in the middle, so that the actual temperature of the pot can be reflected more timely and truly, and the accuracy of detecting the pot temperature can be improved. The thermocouple wire electrically connects the thermocouple 130 and the controller 140 and is disposed in the pot body recess 114. And an insulating layer consisting of asbestos fiber (or alumina fiber) tubes is sleeved outside the thermocouple wires. The pot body groove cover 115 covers the pot body groove 114, the clamping portion of the pot body groove cover 115 slides into the clamping portion of the pot body groove 114, the 2 nd clamping portion 1151 slides into the 1 st clamping portion 1133, the 2 nd clamping portion 1151 is located above the 1 st clamping portion 1133, as shown in fig. 3, the clamping step 1152 at the lower end of the pot body groove cover 115 clamps the plug 1134, and the plug 1134 is prevented from slipping. The pot body groove cover 115 covers the pot body groove 114 to form a groove hole for accommodating the thermocouple wire, so that the thermocouple wire can be prevented from being exposed outside the pot, the service life of the thermocouple wire is prolonged beneficially, and the pot is easier to use.
As will be appreciated with respect to the detection aperture 113, the outer surface of the pan base 112 may also be provided with a mating pan base groove and pan base groove cover (not shown). The pot bottom grooves are distributed along the radial direction of the pot bottom, one end of each pot bottom groove is terminated at the middle part of the pot bottom 112, and the other end of each pot bottom groove is terminated at the edge of the pot bottom 112, such as the connecting area of the pot body part 111 and the pot bottom 112. The curvature radius of the pot bottom groove cover is the same as the curvature radius of the pot bottom 112 at the position of the pot bottom groove. The two side walls of the pot bottom groove cover and the two side walls of the pot bottom groove are respectively provided with a clamping melon and a clamping groove which are in clamping fit with each other. The pot bottom groove cover is covered on the pot bottom groove to form the detection hole 113. The thus arranged sensing hole 113 facilitates replacement and maintenance of the thermocouple 130.
As will be understood with respect to the sensing hole 113, a fixing cover 116 for fixing a thermocouple is provided on an outer surface of the pot bottom 112 of the smart pot 100, as shown in fig. 4. The fixed cover 116 is matched with the pot bottom 112. The fixing cover 116 is provided with a cover recess 1161 for accommodating a thermocouple, the fixing cover 116 covers the pot bottom 112, and the fixing cover 116 and the pot bottom 112 enclose the detection hole 113 formed by the cover recess 1161. The outer surface of the pot body 111 of the intelligent pot 100 is provided with a storage cover 117 for storing thermocouple wires. The accommodating cover 117 is matched with the pot body part 111, and the curvature radius of the accommodating cover 117 is consistent with that of the pot body part 111 at the joint assembly part. The receiving cover 117 is provided with a receiving recess 1171 for receiving the thermocouple wire.
It should be noted that the detection hole 113 may also be a hole whose end surface is rectangular. The thermocouple 130 is packaged in a sheet shape, and the end surface of the thermocouple 130 is matched in shape with the end surface of the detection hole 113. The measuring portion of the thermocouple 130 is provided on the upper surface of the thermocouple. The thermocouple 130 is inserted into the detection hole 113, and an elastic member 1135, such as a spring, is disposed between the lower surface of the thermocouple 130 and the lower inner wall surface of the detection hole 113, and is in a compressed state, so that the measurement portion of the thermocouple 130 and the upper inner wall surface of the detection hole 113 are tightly attached to each other. In addition, the measuring part of the thermocouple 130 can be arranged on the lower surface of the thermocouple, the thermocouple 130 is arranged in the detection hole 113, and an elastic sheet is arranged between the upper surface of the thermocouple 130 and the upper inner wall surface of the detection hole 113; in addition, the measuring part of the thermocouple 130 may be disposed at a side of the thermocouple, the thermocouple 130 is assembled with the sensing hole 113, and a spring plate is disposed between an opposite side of the measuring part of the thermocouple 130 and a sidewall of the sensing hole 113, so that the measuring part of the thermocouple 130 and the sensing hole 113 are closely attached, thereby improving accuracy of temperature sensing.
As shown in fig. 1 and 2, the handle 120 includes a handle body 121, a 1 st insulating portion 122, and a 2 nd insulating portion 123. The handle body 121 is made of a steel plate by a press forming process. The 1 st insulating part 122 and the 2 nd insulating part 123 are made of bakelite. One end of the shank body 121 is bonded to the 1 st insulating portion 122 and the 2 nd insulating portion 123, respectively, the 1 st insulating portion 122 is located above the end, the 2 nd insulating portion 123 is located below the end, and the shank body 121, the 1 st insulating portion 122, and the 2 nd insulating portion 123 are fixed by bolts. The other end of the handle body 121 is fixedly connected with the pan body 111. The 2 nd insulating part 123 is provided therein with a handle recess for receiving the pot controller 140.
As shown in fig. 8, the pan controller 140 includes a microprocessor, a memory, a sensor circuit, a network module, a display interface module, a key interface module, a wireless transceiver module, a signal interface module, and a cooking program embedded in the memory. The processor, the memory, the sensor circuit, the network module, the display interface module, the key interface module, the wireless transceiving module and the signal interface module are respectively and electrically connected with the microprocessor. The liquid crystal screen is electrically connected with the pan controller 140 through the display interface module; a mobile terminal, such as a mobile phone, a tablet computer, etc., establishes a communication connection with the pan controller 140 through the network module; the thermocouple 130 is electrically connected to the pan controller 140 via a sensor circuit; the key module is electrically connected to the pan controller 140 via the key interface module. The pan controller 140 establishes a communication connection with the heating device through the signal interface module or the wireless transceiver module, and is used to operate the heating device for ignition, fire adjustment, and flameout. The cooking program is stored in a memory built in the pan controller 140. The cooking program is configured such that a set of controlled variables associated with time, including a set point for time and a set point for temperature, are stored in memory. The key module and the mobile terminal can be used to modify the cooking program stored in the pot controller 140 and set a new cooking program. One or two of the key module and the mobile terminal can be selected and matched according to needs, and the key module and the mobile terminal are preferred in the embodiment. The key module is provided with an ignition key, a flameout key, an increase key, a decrease key and a confirmation key, and the application software interface of the mobile terminal is also provided with an ignition key, a flameout key, an increase key, a decrease key and a confirmation key, so that the intelligent pot 100 can be manually controlled. The key module is disposed on the grip 120.
Wherein, the cooking program comprises a program table and program parameters. The program table mainly comprises a data table formed by setting values of controlled variables (such as temperature) related to time, and comprises a plurality of program steps, wherein each program step comprises a setting value of time and a setting value of a controlled variable (such as temperature). The time set in the schedule will last for the entire cooking cycle, ranging from the time the food is put into the pot to light, the time the cooking is completed, to the time the fire is finally extinguished. The program parameters include one, two or more parameters, and the program parameters are associated with a program table, and used cooperatively, to modify the program parameters to optimize the control of the cooking process by the pan controller 140. The cooking program is stored in the memory of the pan controller 140. The user with cooking skill can modify and define the required cooking program by himself through the human-computer interaction interface such as mobile terminal, button module, etc., and the cooking program after modification can be stored in the memorizer. A program table and program parameters of an optional cooking program are shown below, wherein the program table includes 7 program steps, each program step includes a set value of "" temperature "" fire control manner "" power ratio "" controlled variable and a set value of "" time "".
A program table:
Figure BDA0003442694630000091
program parameters:
incubation temperature (/ ° c): 80;
temperature offset value (/ deg.C): 5;
temperature control tolerance (/%): 2
Sampling period (/ s): 15.
the controlled variables in the "program table" include "temperature", "fire control method", "power ratio", and "time". Wherein "temperature" means the temperature to which the pan is to be brought during cooking of the food, preferably the temperature of the inner surface of the bottom of the pan. The 'fire control mode' comprises two control modes of 'power' and 'temperature', wherein the power control means that the heating power of the heating device is adjusted to heat the cooker; the temperature control means that the amount of thermal power of the heating device is changed based on a set value and a measured value of the pot temperature so that the measured value of the pot temperature coincides with the set value. The term "power ratio" is understood to mean the ratio of the current power of the heating device to its nominal power, the current output power to the nominal power for the electric heating means, and the opening of the electrically controlled gas valve or the gas flow rate (pressure) supplied to the burner to the gas nominal flow rate (pressure) for the gas heating means. "time" represents the gradual change of the controlled variable from the set value of the previous program step to the set value of the program step in the time period of the program step, and the slope change can be selected, which is only suitable for describing the controlled variable of "temperature", "power ratio" whose value can be continuously changed; for the 1 st program step, the set value of the controlled variable of the last program step is understood to be the set value of the controlled variable of the 1 st program step.
The program parameters include a temperature keeping temperature, a temperature deviation value, a temperature control tolerance and a sampling period. "soak temperature" is indicative of the temperature at which the food needs to be maintained after cooking is complete so that the food is ready for consumption. The temperature deviation value represents a correction parameter for correcting the temperature control deviation of the pot temperature, and is used for correcting the deviation of the pot temperature controlled by the thermocouple relative to the set temperature so as to enable the heated temperature of the pot (the inner surface of the bottom) to be consistent with the expected set temperature. Factors that cause temperature control deviation of the thermocouple include: the position of the temperature measuring point, the difference of the thermocouple, the assembly deviation of the thermocouple, the difference of the cookware (such as thickness, thinness and material) and the like. The measured value of the pot temperature detected by the thermocouple is numerically identical to the sum of the set value of the temperature obtained from the program table and the temperature offset value, so that the heated temperature of the pot (inner surface of the bottom of the pot) reaches the set value of the temperature. For example, the desired temperature of the inner surface of the bottom of the pan is 100 ℃, the set point of the temperature is taken to be 100 ℃ as detected by the thermocoupleThe temperature measuring point is positioned on the lower surface of the pot bottom, thermal resistance exists between the lower surface and the inner surface of the pot bottom, when the detection temperature of the thermocouple is 100 ℃, the temperature of the inner surface of the pot bottom is less than 100 ℃, if the temperature is possibly 98 ℃, the temperature does not reach the set temperature, namely 2 ℃ deviation exists, the temperature deviation can be corrected through a temperature deviation value, and the temperature deviation value is set as 2 ℃. In this state, the set value of the temperature is 100, the temperature deviation value is 2 ℃, the target temperature detected by the thermocouple is 102 ℃, and when the temperature detected by the thermocouple reaches 102 ℃, the temperature of the inner surface of the pot bottom reaches 100 ℃, namely the desired temperature. For example, when the thermocouple is replaced, the thermal condition of the pot is changed due to the difference of the thermocouple and the assembly deviation, and the thermal condition of the pot needs to be adjusted before use, so that the program table is suitable for the pot with the new thermal condition. An alternative way of tuning, e.g. at a certain temperature set point T0A lower heating pot, a first-grade temperature detector is adopted to measure the temperature value T of the inner surface of the bottom of the pot1Adjusting the fire power of the gas stove to T1And T0And when the measured value of the pot temperature detected by the thermocouple is equal to the set value T, the measured value Tc of the pot temperature is Tc0The difference therebetween can be used as the initial set point for the temperature offset value. In addition, the temperature offset value can also be used to adjust the set value of the temperature of each program step in the cooking program, for example, the temperature offset value is increased by 2 ℃, which is equivalent to the set value of the temperature of each program step in the cooking program being increased by 2 ℃. The set value of the temperature deviation value is modified to be equivalent to the set value of the temperature of each program step in the integral upward or downward translation program table, so that the same program table can be suitable for cookers with different thicknesses and different materials, and the assembly deviation of the thermocouple and the difference of the thermocouple can be modified, so that the program table can be suitable for cookers. The temperature control tolerance represents the fluctuation range of the controlled target temperature of the cooker relative to the temperature set value in the cooking program; for example, a temperature control tolerance of 2% represents a relative value of 2% for the maximum deviation of the fluctuation range between the measured value of the pot temperature (i.e., the controlled target temperature) and the set value of the pot temperature allowed by the pot controller, such as: if the set value of the pot temperature is 200 ℃, thenThe measured value of the pot temperature (i.e., the controlled target temperature) is between 196 ℃ and 204 ℃, and the measured value of the pot temperature is considered to be equivalent to the set value of the pot temperature. The relative values of the temperature deviations are defined herein as: the relative value of the temperature deviation is ABS (measured value of temperature-set value of temperature)/set value of temperature 100%, and the definition of the relative value is the same as below. The sampling period represents the time interval between the temperature set value, the firepower control mode set value and the power ratio set value obtained by the pan controller from the program table and the measured value of the pan temperature obtained from the thermocouple, namely the frequency of the pan controller controlling the pan. The smaller the sampling period is set, the more accurate the controller controls the temperature of the pan.
It should be noted that when the program parameters of the cooking program are configured with the parameters of "jump temperature" and "power ratio", the program table of the cooking program can omit the controlled variables of "fire control method" and "power ratio". Thus, an alternative cooking recipe and recipe parameters, as shown below, includes only the "temperature" controlled variable and the "time".
A program table:
Figure BDA0003442694630000111
Figure BDA0003442694630000121
program parameters:
jump temperature (/ deg.C): 60, adding a solvent to the mixture;
power ratio (/%): 90, respectively;
incubation temperature (/ ° c): 80;
temperature offset value (/ deg.C): 5;
temperature control tolerance (/%): 2
Sampling period (/ s): 15.
the 'jump temperature' in the cooking program represents the temperature point when the control mode of the firepower required by the intelligent pot is switched from power control to temperature control and from temperature control to power control, when the measured value of the pot temperature is less than the set value of the jump temperature, the power control mode is adopted to control the required firepower, and when the measured value of the pot temperature is higher than the set value of the jump temperature, the temperature control mode is adopted to control the required firepower. The term "power ratio" is intended to mean the ratio of the current power of the heating device to its nominal power during power control, for electrical heating means the ratio of the current output power to the nominal power, for gas heating means the opening of an electrically controlled gas valve or the ratio of the gas flow (pressure) supplied to the burner to the nominal gas flow (pressure). The optional cooking program has a program table with only one controlled variable "" temperature "", which is very compact.
It should be further noted that, when cooking food, the whole cooking process can control the fire power of the heating device by adopting a temperature control mode, and the temperature of the bottom of the pot reaches the set value of the temperature obtained from the cooking program in each control period, in this case, the controlled variables of the jump temperature and the power ratio in the program parameters can be omitted, at this time, the cooking program is very simple, only the controlled variable of the temperature is in the program table of the cooking program, and only the parameters of the heat preservation temperature, the temperature deviation value and the temperature control tolerance are in the program parameters.
In each sampling period, the pan controller 140 obtains the set values of the controlled variables such as temperature, power ratio, etc. from the program table of the cooking recipe by interpolation. It can be understood that the pan controller 140 divides the time period corresponding to the time setting value of the current program step into a plurality of corresponding small time periods each corresponding to one sampling period according to the sampling period, for example, 15s, and obtains the setting value of the controlled variable corresponding to each sampling period by interpolation according to the setting value of the controlled variable of the previous program step and the setting value of the controlled variable of the current program step. Preferably, the value is obtained by linear inner difference method, the temperature and power ratio controlled variable of each program step will be changed from the set value of the previous program step to the set value of the program step, i.e. the slope change. For example, for the first cooking program mentioned above, the sampling period is 15s, the set value of the temperature in the sampling period is 70 ℃, the set value of the power ratio is 75% by the method of linear interpolation in the 6 th sampling period of the 2 nd step, i.e., the sampling period corresponding to 1 minute 30 seconds, and the acquired fire power control mode is the "power" mode. In addition, the linear interpolation method can be replaced by polynomial interpolation, Newton interpolation or other interpolation methods, so that the controlled variable between program steps is smoothly and excessively replaced with the slope change.
The smart pot 100 of the present embodiment is configured with a thermocouple 130 and a pot controller 140. The intelligent pot 100 is matched with the heating device, the heating device heats the intelligent pot 100, and the intelligent pot 100 operates the heating device, so that the heating device generates firepower with the size required by the intelligent pot. The heating device can be one of a gas stove, a resistance furnace and an electromagnetic oven. The heating device is provided with a heating controller, and a wireless transceiving module is arranged in the heating controller. The wireless transceiver module of the intelligent pan 100 and the wireless transceiver module of the heating device establish communication connection through a wireless channel, and are used for sending a control signal to the heating device and receiving a feedback signal of the heating device, so that the intelligent pan 100 and the heating device work cooperatively.
Next, the principle and the control process of the intelligent cooker 100 of the present embodiment for automatically cooking food will be described below by taking the first cooking program mentioned above (without using the temperature offset parameter) and the heating device as an example.
S1: and (4) preparing food materials. The intelligent pot 100 of the present invention is placed on a heating device, the lid of the pot is opened, the prepared food material is placed in the intelligent pot, and the lid of the pot is closed.
S2: and selecting a cooking mode. The cooking program adapted to the food to be cooked is selected through the key module on the smart pot 100 or the mobile terminal phone, and the pot controller 140 obtains the corresponding cooking program from the internal memory thereof.
S3: and (4) igniting and cooking. The intelligent pot 100 is provided with two cooking modes of 'automatic' and 'manual', the 'automatic' cooking mode is selected through a key module on the intelligent pot or a mobile terminal mobile phone, ignition is triggered in the manual or reserved mode, the resistance furnace is powered on and is ignited, and the resistance furnace heats the intelligent pot.
The pot controller 140 sequentially executes each program step in the cooking program, controls the fire power of the resistance furnace, heats the pot, makes the temperature of the pot reach a temperature set value, and realizes automatic cooking. The program table of the first cooking program includes 7 program steps, wherein the 1 st program step and the 2 nd program step, the heating power control mode of the resistance furnace is operated as power control by the pan controller 140; wherein the heating power control mode of the resistance furnace is manipulated by the pan controller 140 to be temperature control from the 3 rd program step to the 7 th program step. After the resistance furnace is powered on and ignited, the pan controller 140 executes the 1 st program step of the program table, the 1 st program step adopts temperature control, the set value of the power ratio of the 1 st program step is 90% and the set value of the temperature is 60 ℃, in each control (/ sampling) period, the set value of the power ratio obtained by the pan controller 140 from the 1 st program step is 90%, based on the obtained set value of the power ratio, the pan controller 140 generates a control signal and sends the control signal to the resistance furnace, based on the received control signal, the controller of the resistance furnace adjusts the power of the resistance furnace to enable the output power of the resistance furnace to reach 90% of the rated power, and carries out big fire heating on the intelligent pan 100 to enable the intelligent pan to rapidly heat up. The pan controller 140 collects the detection signal of the thermocouple 130 to obtain the measured value of the temperature of the pan bottom 112, when the measured value of the temperature of the pan bottom reaches the set value of the temperature of the 1 st procedure step of 60 ℃, the pan controller 140 finishes the execution of the 1 st procedure step and switches to the execution of the 2 nd procedure step, the 2 nd procedure step adopts power control, the set value of the power ratio of the 2 nd procedure step is 60%, the set value of the temperature is 80 ℃, which indicates that the set value of the power ratio is decreased from 90% to 60% in the set time period of the 2 nd procedure step. In each control cycle of the 2 nd program step, the pan controller 140 obtains a set value of the power ratio from the 2 nd program step by a linear interpolation method, the obtained set value of the power ratio is 75% based on the obtained set value of the power ratio, for example, the sampling cycle is 15s, in the 6 th control cycle of the 2 nd program step, that is, the control cycle corresponding to 1 minute and 30 seconds, the pan controller 140 generates a control signal based on the set value of the 75% power ratio and sends the control signal to the electric resistance furnace, the controller of the electric resistance furnace adjusts the power of the electric resistance furnace based on the received control signal to make the output power reach 75% of the rated power, the heating power of the intelligent pan 100 is gradually reduced, the heating rate of the intelligent pan 100 is slowed down, and the pan overflow and the pan burnt caused by thermal inertia can be avoided. Meanwhile, the pan controller 140 obtains the measured value of the pan temperature detected by the thermocouple 130, and compares the measured value of the pan temperature with the set value of the temperature of the 2 nd program step of 80 ℃, when the measured value of the pan temperature reaches the set value of the temperature of the 2 nd program step of 80 ℃, the heating power control mode of the intelligent pan 100 is converted from power control to temperature control, the pan controller 140 ends the execution of the 2 nd program step, and executes the 3 rd program step, and the 3 rd program step adopts the temperature control mode to control the heating power of the resistance furnace, so as to heat the intelligent pan 100. The fire control method from the 3 rd program step to the 7 th program step is temperature control, and the fire power of the resistance furnace is controlled by adopting the temperature control method.
In the temperature control stage, the set value of the power ratio in the program table of the cooking program is invalidated, and the pot controller 140 acquires the measured value of the pot bottom temperature detected by the thermocouple 130 at every control/sampling period, and acquires the set value of the pot temperature and the set value of the fire power control manner from the program table by using the linear interpolation method. The setting value of the fire control mode is temperature control, and the fire of the resistance furnace is adjusted by adopting the temperature control mode. The pan controller 140 compares the acquired measured value of the pan temperature with the set value of the pan temperature, and when the measured value of the pan temperature is smaller than the set value of the pan temperature, the pan controller 140 generates a control signal including an increase in the fire power of the resistance furnace through calculation and transmits the control signal to the resistance furnace, and the controller of the resistance furnace generates the control signal for increasing the fire power of the resistance furnace based on the received control signal, so that the temperature of the intelligent pan 100 is increased until the acquired measured value of the pan temperature is equivalent to the set value of the pan temperature, which can be understood as a relative value smaller than a certain value, such as 2%. When the measured value of the collected pan temperature is greater than the acquired set value of the pan temperature, the pan controller 140 generates a control signal for decreasing the fire power of the resistance furnace through calculation, and transmits the control signal to the resistance furnace, and the controller of the resistance furnace generates a control signal for decreasing the fire power of the resistance furnace based on the received control signal, so that the temperature of the intelligent pan 100 is decreased until the measured value of the collected pan temperature is equivalent to the acquired set value of the pan temperature. Thus, the pot controller 140 sequentially executes the 3 rd to 7 th program steps until the respective program steps of the cooking program are executed. When the pot controller 140 performs an arithmetic process on the acquired measured value of the pot temperature and the set value of the pot temperature to generate a fire power signal for adjusting the fire power of the resistance furnace, the arithmetic process method used may be a PI (proportional integral) control algorithm, a PD (proportional derivative) control algorithm, or a PID (proportional integral derivative) control algorithm with higher control accuracy to generate a control signal for adjusting the fire power, and the magnitude of the fire power of the resistance furnace is adjusted so that the measured value of the pot temperature detected by the thermocouple 130 corresponds to the set value of the pot temperature. The fire signal can be a standard analog signal of 4-20mA, such as a power ratio corresponding to 5% -100% of the resistance furnace, for adjusting the fire of the resistance furnace. The PI control algorithm, the PD control algorithm, and the PID control algorithm are prior art and will not be described in detail herein. After the cooking program is executed by the pot controller 140, a cooking process is completed, and the pot controller 140 generates an alarm signal to trigger the alarm to sound, so as to inform the user that the cooking is finished, and the user can enjoy the food.
S4: taking out of the pot. After the sound and light alarm is given out by the bomber, the cooked food in the intelligent pot 100 can be taken out. If the user does not take food for a long time, the pan controller 140 generates a control signal according to the set value of the "holding temperature" in the program parameters to operate the resistance furnace to heat the intelligent pan 100, so that the measured value of the pan temperature detected by the thermocouple 130 is equivalent to the set value of the holding temperature, the temperature of the cooked food is maintained at the temperature set by the user, and the food is more suitable for being eaten at any time.
The intelligent pot 100 is adopted to cook food, and the whole cooking process is automatically finished by the intelligent pot 100 without participation of a user. If the intelligent pot 100 of the embodiment is used for cooking rice, rice without rice crust can be cooked if a rice cooking program without rice crust is selected; if the cooking style with the rice crust is selected, the rice with the rice crust can be cooked, the rice with the rice crust has stronger fragrance and purer thickness than the rice without the rice crust, and the rice crust is golden yellow, crisp, fragrant and delicious.
It should be noted that, if the "temperature deviation value" parameter is adopted, in the automatic cooking process, the pan controller 140 sequentially executes each program step of the cooking program, and in each control period, the pan controller 140 compares the measured value of the pan temperature with the sum of the set value of the pan temperature and the temperature deviation value obtained from the cooking program, and in the power control stage, when the measured value of the pan temperature reaches the sum of the set value of the current program step temperature and the temperature deviation value, the execution of the program step is terminated; in the temperature control stage, based on the measured value of the pot temperature and the sum of the acquired set value of the pot temperature and the temperature deviation value, the sum is calculated to generate a control signal of the required firepower, and the control signal is sent to a heating device for heating the intelligent pot, the heating device adjusts the firepower based on the received control signal, so that the measured value of the pot temperature reaches the sum of the acquired set value of the pot temperature and the temperature deviation value until the cooking program is executed by the pot controller, and the cooking of food is completed.
The intelligent pot of this embodiment includes the pot body, thermocouple, pot controller and the built-in culinary art form of pot controller. The thermocouple is mounted at the bottom of the pan body. When cooking food, the pot controller acquires a cooking program corresponding to the food to be cooked, acquires a measured value of the pot temperature detected by the thermocouple and a set value of the pot temperature from the cooking program based on the cooking program in each control/sampling period, processes the measured value of the pot temperature and the set value of the pot temperature based on the measured value of the pot temperature, generates a control signal corresponding to the required firepower for heating the pot body by adopting a PI (proportional integral) control algorithm, a PD (proportional derivative) control algorithm or a PID (proportional integral derivative) control algorithm with higher control precision, and sends the control signal to a heating device for heating an intelligent pot, wherein the heating device can be one of a gas stove, a resistance furnace and an electromagnetic stove, the controller of the heating device generates a control signal based on the received control signal to adjust the firepower of the heating device, the measured value of the pot temperature detected by the thermocouple reaches the set value of the pot temperature obtained from the cooking program, the pot controller controls the firepower of the heating device to enable the pot temperature to reach the set value, food is automatically cooked until all program steps of the cooking program are executed in sequence, the cooking of the food is completed, the whole cooking process does not need user participation, and the user can cook delicious food with or without cooking skills. In addition, the thermocouple measures the temperature at the center of the bottom of the pot, so that the temperature of the pot to be controlled can be reflected, and the accuracy of temperature detection is improved.
As a second embodiment of the present invention, an intelligent pan 100 is provided, as shown in fig. 5, and only the different technical solutions of the second embodiment and the first embodiment will be described in detail below.
As shown in fig. 5, the intelligent cooker 100 further includes an overflow sensor 150 and a water collection tank 160. The overflow sensor 150 is assembled with the intelligent pot 100 and is used for detecting the overflow state of the pot body, and the overflow state can be understood as the overflow state including the overflow of liquid in the pot or the overflow condition including the overflow state which is about to overflow and is not overflowed yet. The water collecting groove 160 is disposed at the top of the pot body 111, is located outside the pot body 111, and surrounds the pot body 111 for a circle, and is used for collecting the liquid overflowing from the pot body 110, so as to prevent the overflowing liquid from fouling the heating device and the cooking bench. The end surface of the water collecting groove 160 may be L-shaped, and it forms a U-shaped groove for containing liquid after being fixed with the pot body part 111. From the opposite side of the grip handle 120 to the side of the grip handle 120, the height of the water collection groove 160 with respect to the bottom of the pot is gradually reduced, and the height of the water collection groove 160 located at the side of the grip handle 120 is the lowest to facilitate the liquid in the water collection groove 160 to flow thereto. The water collection tub 160 is provided with a drainage hole (not shown) for the outflow of liquid, which is provided at the lowest level of the water collection tub 160, that is, directly below the grip 120.
Wherein, the overflow pan sensor 150 can be a thermocouple. The thermocouple constituting the overflow pan sensor is fixed to the pan body 111, and as shown in fig. 5, the detection end of the thermocouple is disposed in the water collection tank 160 and located right below the grip, for example, in the drainage hole, so that the detection end of the thermocouple can timely contact the liquid collected by the water collection tank 160, and the overflow pan state of the liquid overflowing from the pan body can be timely detected, thereby facilitating the pan controller 140 to timely perform the following overflow pan treatment. In the cooking process, when the pan is overflowed, the liquid in the intelligent pan 100 overflows, the overflowed liquid is collected in the water collecting tank 150 and flows to the drainage hole, the measuring end part of the thermocouple is in contact with the overflowed liquid, the temperature of the measuring end part of the thermocouple is rapidly changed, the temperature curve detected by the thermocouple is suddenly changed to form a step, and accordingly the step can be used for judging that the intelligent pan 100 overflows and the state of the overflowed pan is generated. The thermocouple is used as the overflow sensor 150, which is low in cost, but the overflow can be detected only after the liquid in the intelligent pot 100 overflows, the state of the generated overflow pot is determined, and the overflow condition of the intelligent pot 100 can not be detected to be the overflow condition which is about to overflow but not yet overflow. For example, the intelligent pot 100 is heated by the heating device, the liquid in the pot is continuously heated after boiling, a large amount of foam is generated on the surface of the liquid in the pot, the foam covers the entire liquid surface, the height of the foam gradually increases, when the top end surface of the foam contacts with the pot cover, the intelligent pot is ready for an overflow condition, an overflow will occur, but the overflow does not occur, and the thermocouple constituting the overflow sensor 150 cannot detect the state of the overflow in the pot, so that the overflow cannot be avoided.
The ultrasonic sensor is used for replacing the thermocouple for detecting the overflowing cooker, and the ultrasonic sensor is used for detecting the foam and the height of the foam generated on the surface of the liquid, so that the problems can be well solved, and the overflowing cooker can be avoided. The ultrasonic sensor is arranged above the pot, as shown in fig. 6, the ultrasonic sensor as the overflow pot sensor 150 can be fixed on the intelligent pot, such as the handle 120, and the detection end of the ultrasonic sensor is opposite to the liquid in the pot; alternatively, as shown in fig. 7, the ultrasonic sensor may be fixed to the lid of the smart pot 100 such that the detection end of the ultrasonic sensor faces the detection window of the lid. The ultrasonic sensor (or through the detection window) can detect the foam accumulated on the liquid surface in the intelligent pot 100 and the height of the foam. The pot controller 140 acquires a detection signal of the ultrasonic sensor, determines the height of the foam based on the detection signal of the ultrasonic sensor, when the height of the foam reaches a height threshold value, the liquid in the intelligent pot 100 will overflow and will not overflow, the pot controller 140 makes a judgment of the pot overflow state and generates a control signal for reducing the required firepower, and sends the control signal to the heating device, the heating device generates a control signal based on the received control signal for reducing the firepower of the heating device, so that the foam height in the intelligent pot 100 is reduced or even eliminated, the intelligent pot 100 is ensured not to overflow, and the cleanness of the heating device and a cooking bench is kept. In addition, the ultrasonic sensor can be replaced by a photoelectric sensor for the foam detection side. Therefore, when the overflow sensor 150 selects the ultrasonic wave sensor or the photoelectric wave sensor for detecting the foam, and the pan controller 140 operates the heating device to reduce the fire power when the pan overflow condition of the intelligent pan 100 is satisfied but the pan is not yet overflowed, the pan overflow condition of the intelligent pan 100 is eliminated, the pan overflow can be avoided, and the heating device and the cooking bench are prevented from being dirtied by the overflowed liquid.
In addition, it should be noted that the overflow pan sensor 150 may also be an ultrasonic sensor or a photoelectric sensor for displacement detection, and the overflow pan sensor is disposed above the intelligent pan, as shown in fig. 7, and may be fixed to the handle portion 120 of the intelligent pan 100, and the detection end portion of the overflow pan sensor is directly opposite to the pan cover of the intelligent pan for detecting whether the pan is covered by the cover. When the intelligent pot 100 overflows, the cover of the intelligent pot moves up and down, moves left and right, and moves. Therefore, when the pan controller 140 determines that the pan cover is displaced based on the detection signal of the pan overflow sensor 150, the pan controller 140 determines that the pan overflow state is generated, and at this time, the pan controller 140 timely generates a control signal to operate the heating device to reduce the fire power, thereby eliminating the pan overflow condition of the pan and reducing or even avoiding the occurrence of pan overflow.
When the intelligent pot 100 is used for cooking food, the pot controller 140 acquires a detection signal of the overflow sensor 150 at each control/sampling period, and determines the overflow state of the intelligent pot based on the detection signal of the overflow sensor 150. The pan controller 140 generates a control signal for reducing the firepower required to be heated when determining that the state of pan overflow is generated based on the detection signal of the pan overflow sensor 150, and sends the control signal to the heating device, and the controller of the heating device generates a control signal for controlling the heating device to reduce the firepower based on the received control signal, so that the intelligent pan eliminates pan overflow, and the pan overflow is prevented from continuing; meanwhile, the pot controller counts the number of overflowing pots. When the pot overflow count is greater than the count threshold, for example, the pot overflow count is greater than 3 times, particularly when the continuous pot overflow count occurs, the pot control controller 140 further performs the following pot overflow process.
When the pot overflow count is greater than the count threshold, the pot controller 140 compares the set value of the pot temperature corresponding to the control period of the pot overflow time obtained from the cooking program with the set value of the current program step temperature, calculates a difference between the set value of the pot temperature and the set value of the current program step temperature, and identifies the difference, which is identified as the 1 st adjustment value herein. When the acquired set value of the pot temperature corresponding to the control period of the pot overflow moment is lower than the set value of the current program step temperature, if the difference between the set value of the pot temperature and the set value of the program step temperature is 5-10 ℃, the set value of the program step temperature in the cooking program is over high, at the moment, the pot controller 140 reduces the set value of the temperature deviation value in the cooking program, so that the controlled target temperature of the intelligent pot 100 is wholly translated downwards, and the controlled target temperature of the pot is reduced until the occurrence of pot overflow is eliminated; the magnitude of the decrease in the set point of the temperature offset value may be determined with reference to the 1 st adjustment value, optionally taking the value of a fractional amount of the 1 st adjustment value, such as 1/3, 1/2, or 2/3 where the magnitude of the decrease is the 1 st adjustment value. When the acquired set value of the pot temperature corresponding to the control cycle of the pot overflow time is higher than the set value of the program step temperature, if the difference between the set value of the pot temperature and the set value of the temperature of the current program step is 2-5 ℃, namely the set value of the pot temperature corresponding to the control cycle of the pot overflow time is close to the set value of the temperature of the current program step, the pot controller 140 reduces the set value of the temperature of the current program step in the cooking program, reduces the set value of the temperature of each program step of which the temperature set value is not less than the set value of the program step temperature, reduces the set value of the intelligent pot temperature and the rising rate of the pot temperature, gradually reduces the firepower of the heating device, and reduces the firepower until the pot overflow is eliminated; the reduction range of the set point of the program step temperature can be determined by referring to the 1 st adjustment value, and can be selected as a partial value of the 1 st adjustment value, such as 1/3, 1/2 or 2/3 with the reduction range being equal to the 1 st adjustment value. It should be noted that, after the overflow occurs, the pot controller 140 may also simultaneously decrease the set value of the temperature deviation value in the cooking program and the set value of the current program step temperature, in this case, to avoid the over-adjustment resulting in the over-low pot temperature, the sum of the decrease range of the temperature deviation value and the decrease range of the program step temperature set value should be smaller than the 1 st adjustment value. After the cooking program is modified, the pan controller 140 performs regular 0 processing on the overflow count to recover the value of 0.
After the pan controller 140 reduces and modifies the set value of the program step temperature or/and the set value of the temperature deviation value of the cooking program, the pan controller 140 counts the overflowing pan, and when the overflowing pan count is larger than the counting threshold, the pan controller 140 modifies the cooking program again according to the above method, and the cycle adjustment is performed until the cooking program is executed, and the whole cooking process is completed. After cooking is completed, the user may save the cooking program modified by the pot controller 140 for the next use.
If the overflow sensor 150 is the ultrasonic sensor or the photoelectric sensor, the overflow sensor 150 detects the foam and the foam height on the surface of the liquid in the pot or the moving state of the pot cover, so that the overflow can be avoided. For example, when the liquid in the intelligent pot 100 is heated to boiling, the liquid surface generates and gathers foam, when the height of the foam reaches a set height threshold, if the top end surface of the foam contacts the pot cover, the pot overflow tendency is generated, and the possibility of pot overflow occurs, the pot controller 140 judges the state of the pot overflow which is possessed by the pot overflow condition, generates a control signal for reducing heating firepower, and sends the control signal to the heating device, and the pot controller 140 counts the pot overflow. The heating device generates a control signal based on the received control signal, so as to reduce the firepower of the heating device, reduce or even eliminate the foam generated in the intelligent pot 100, and avoid the occurrence of pot overflow.
The intelligent pot of the embodiment comprises a pot body, a thermocouple, a pot controller, an overflow pot sensor and a cooking program arranged in the pot controller. The thermocouple is assembled at the bottom of the pan body, and the overflow pan sensor is arranged on the intelligent pan. The pot controller judges the state of the pot overflow based on the detection signal of the pot overflow sensor, and carries out pot overflow treatment, thereby reducing or even avoiding pot overflow again. The pot controller collects a detection signal of the overflow pot sensor, and based on the detection signal of the overflow pot sensor, when the state of the overflow pot is determined, the judgment of the overflow pot is made, the pot controller generates a control signal for reducing the required firepower, and sends the control signal to the heating device, and the controller of the heating device generates a control signal based on the control signal for reducing the firepower of the heating device, weakens the overflow pot condition and eliminates the overflow pot of the pot body. Meanwhile, the pot controller counts the number of the overflowing pot, when the number of the overflowing pot is larger than the counting threshold value, the pot controller reduces the set value of the temperature deviation value in the cooking program, or/and reduces the set value of the temperature of the program step corresponding to the overflowing pot occurrence in the cooking program and the set value of the temperature not lower than the set value of the temperature of each program step of the program step, so as to reduce or even eliminate the overflowing pot occurrence. The overflowing state comprises the state that liquid in the pot overflows, such as a thermocouple is used as an overflowing sensor, the overflowing condition that the height of foam in the pot reaches a height threshold value is in a state that the liquid is not overflowed, such as the overflowing sensor adopting foam detection, and the state that the pot cover moves to overflow, such as the overflowing sensor adopting displacement detection.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims, the description and the equivalents thereof.

Claims (10)

1. An intelligent pot, which is characterized in that: the intelligent pot is provided with an overflow pot sensor and a pot controller; the pot controller acquires a corresponding cooking program; in each control period, the pot controller acquires a detection signal of the pot overflowing sensor, generates a control signal for reducing the firepower required to be heated when the state of pot overflowing is determined to be generated based on the detection signal of the pot overflowing sensor, sends the control signal to the heating device, and counts the pot overflowing; when the overflow count is larger than the preset count threshold, marking the difference value between the set value of the pot temperature corresponding to the control period of the overflow time and the set value of the current program step temperature, which are acquired from the cooking program, as the 1 st adjustment value;
when the acquired set value of the pot temperature corresponding to the control period of the time when the pot overflow happens is lower than the set value of the current program step temperature, the pot controller reduces the set value of the temperature deviation value in the cooking program, the reduction amplitude of the temperature deviation value is a partial quantity value of the 1 st adjustment quantity value, and then the pot overflow count is restored to 0 value; when the acquired set value of the pot temperature corresponding to the control period of the time when the pot overflow occurs is higher than the set value of the current program step temperature, the pot controller reduces the set value of the current program step temperature in the cooking program and reduces the set value of the temperature of each program step of which the temperature set value is not less than the set value of the program step temperature, the reduction range of the set value of the program step temperature is a partial value of the 1 st adjustment value, and then the pot overflow count is restored to 0 value.
2. The smart pot of claim 1, wherein: when the overflow count is larger than the preset count threshold, the pot controller can also reduce the set value of the temperature deviation value in the cooking program and the set value of the current program step temperature at the same time, and the sum of the reduction amplitude of the temperature deviation value and the reduction amplitude of the program step temperature set value is smaller than the 1 st adjustment value; further, the magnitude of the decrease of the temperature offset value takes any one of 1/3, 1/2, and 2/3 of the 1 st adjustment magnitude; the magnitude of decrease in the set point of the program step temperature is any one of 1/3, 1/2, and 2/3 of the 1 st adjustment magnitude.
3. The utility model provides an intelligent pot, includes the pot body, the pot body comprises fixed connection's pot body portion and bottom of a boiler portion, its characterized in that:
the electric cooker also comprises a thermocouple and a cooker controller for cooking control, wherein the thermocouple is assembled with the bottom of the cooker and used for detecting the temperature of the bottom of the cooker;
the pot controller acquiring a cooking program corresponding to food to be cooked, the cooking program being configured with a set value of a pot temperature associated with time; in each control period, the pot controller acquires a set value of the pot temperature from the cooking program by adopting an interpolation method, the pot controller processes the set value of the pot temperature acquired from the cooking program based on the measured value of the pot temperature detected by the thermocouple and generates a control signal comprising the firepower required by cooking, and sends the control signal to a heating device for heating the intelligent pot, and the heating device adjusts the firepower based on the received control signal to enable the measured value of the pot temperature to reach the set value until the cooking program is executed, so that the food cooking is finished.
4. The smart pot of claim 3, wherein:
the cooking program is further configured with a temperature offset parameter for correcting a temperature control deviation of a pot temperature; in each control cycle, the measured value of the pot temperature is brought to the sum of the set value of the pot temperature obtained from the cooking program and the temperature offset value.
5. The smart pot of claim 3, wherein: the pot bottom is provided with a detection hole for accommodating a thermocouple, and the thermocouple is assembled in the detection hole.
6. The smart pot of claim 5, wherein:
the detection hole is a hole arranged in the pot wall at the bottom of the pot; alternatively, the first and second electrodes may be,
the outer surface of the pot bottom is provided with a pot bottom groove and a pot bottom groove cover which are matched, and the pot bottom groove cover is covered on the pot bottom groove to form the detection hole; alternatively, the first and second electrodes may be,
the outer surface of the pot bottom is provided with a fixed cover for fixing the thermocouple, the fixed cover is matched with the pot bottom, a cover groove capable of accommodating the thermocouple is formed in the fixed cover, and the fixed cover covers the pot bottom to form the detection hole.
7. The smart pot of claim 6, wherein: the detection holes are arranged along the radial direction, the blind end of each detection hole is positioned at the middle side of the bottom of the pot, the measuring part of the thermocouple is positioned at the end part of the detection hole, and the measuring part of the thermocouple is attached to the blind end; further preferably, the thermocouple includes a measuring portion, and a measuring portion provided on the thermocouple.
8. The smart pot of claim 6, wherein: the thermocouple is packaged into a sheet with a rectangular end face, the measuring part of the thermocouple is arranged on the surface of the thermocouple, and the measuring part of the thermocouple is attached to the inner wall surface of the detection hole; furthermore, an elastic piece is arranged between the opposite surface of the measuring part of the thermocouple and the inner wall surface of the detection hole, and the elastic piece is in a compressed state.
9. The smart pot of claim 3 or 4, wherein: the device also comprises an overflow sensor used for detecting the overflow state of the pot body.
10. The smart pot of claim 9, wherein:
the overflow pan sensor is a thermocouple, and the detection end part of the overflow pan sensor is arranged in a water collecting tank positioned on the outer side of the top of the pan body part; alternatively, the first and second electrodes may be,
the overflow sensor is an ultrasonic sensor or a photoelectric sensor for detecting foam, is arranged above the pan body, and has a detection end opposite to the pan opening of the intelligent pan; alternatively, the first and second electrodes may be,
the overflow pot sensor is an ultrasonic sensor or a photoelectric sensor for displacement detection, is arranged above the intelligent pot, and the detection end part of the overflow pot sensor is opposite to the pot cover of the intelligent pot.
CN202111648214.6A 2017-03-10 2017-03-10 Intelligent pot Pending CN114424881A (en)

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