CN113867435A - Temperature control method for household appliance and household appliance - Google Patents
Temperature control method for household appliance and household appliance Download PDFInfo
- Publication number
- CN113867435A CN113867435A CN202010623841.3A CN202010623841A CN113867435A CN 113867435 A CN113867435 A CN 113867435A CN 202010623841 A CN202010623841 A CN 202010623841A CN 113867435 A CN113867435 A CN 113867435A
- Authority
- CN
- China
- Prior art keywords
- heating
- temperature
- heated
- substance
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Cookers (AREA)
Abstract
A temperature control method for a household appliance and the household appliance, the household appliance comprises a heating part for heating a substance to be heated; the method comprises the following steps: acquiring a target temperature and an initial temperature of the substance to be heated; determining a first heating time period according to the heat absorption quantity of the substance to be heated required for raising the temperature of the substance to be heated from the initial temperature to the target temperature and the heat absorption quantity of the heating part during the operation of the heating part; starting the heating part to heat, and stopping the heating part when the operation time of the heating part reaches the first heating time; wherein, after the operation of the heating unit is stopped, the substance to be heated is continuously heated to the target temperature by the residual heat of the heating unit, and the residual heat of the heating unit is generated based on the amount of heat absorbed by the heating unit. The scheme of the invention can better realize accurate temperature control.
Description
Technical Field
The embodiment of the invention relates to the technical field of household appliances, in particular to a temperature control method for a household appliance and the household appliance.
Background
With the continuous improvement of the quality of daily life of people, small household appliances such as health-preserving kettles and heating processors are more and more popular.
Taking a heating food processor as an example, except for the configuration of the common machine body matched with the stirring cup, some heating food processors can be combined with the existing machine body to be additionally provided with a health-care kettle. When the health-care kettle is used for making high-grade food materials or medicinal materials, the requirement on heating temperature control is high, the food material nutrition can be fully released by accurate temperature control, and the optimal taste is achieved.
The heating temperature control technology adopted by the existing heating food processor is generally that heating is started after the heating temperature (namely, the set temperature) is set, the heating is stopped when the temperature is heated to a fixed value (recorded as the heating stop temperature) away from the set temperature by considering the influences of the residual temperature on the heating plate, the time delay of a temperature sensor and the like, and the residual temperature is increased to be close to the set temperature by the heating plate. Because the initial temperature and the specific heat capacity of the heated liquid or food are different, and the heating stopping temperature is a preset default value, after the heating is stopped, the heated liquid or food cannot be guaranteed to be effectively heated to the set temperature by the residual temperature. Even if the temperature rises above the set temperature, the taste may be affected. Especially for heating equipment with high requirements on temperature control, precise temperature control is urgently needed.
Disclosure of Invention
An object of the embodiments of the present invention is to provide an improved temperature control method for a household appliance and a household appliance, which are beneficial to better realize accurate temperature control.
Accordingly, embodiments of the present invention provide a temperature control method for a home appliance including a heating part for heating a substance to be heated; the method comprises the following steps: acquiring a target temperature and an initial temperature of the substance to be heated; determining a first heating time period according to the heat absorption quantity of the substance to be heated required for raising the temperature of the substance to be heated from the initial temperature to the target temperature and the heat absorption quantity of the heating part during the operation of the heating part; starting the heating part to heat, and stopping the heating part when the operation time of the heating part reaches the first heating time; wherein, after the operation of the heating unit is stopped, the substance to be heated is continuously heated to the target temperature by the residual heat of the heating unit, and the residual heat of the heating unit is generated based on the amount of heat absorbed by the heating unit.
Compared with the technical scheme that the fixed temperature is adopted to stop and the target temperature is reached by the residual temperature in the prior art, the scheme of the embodiment realizes accurate temperature control by estimating the fixed heating time and the residual temperature. Specifically, the first heating period is a period required for the amount of heat supplied to the substance to be heated to reach the heat absorption amount of the substance to be heated, and the amount of heat supplied to the heating portion to reach the heat absorption amount of the heating portion. Therefore, the heating time is reasonably estimated, so that after the heating part stops working, the substance to be heated can be accurately heated to the target temperature by depending on the residual temperature of the heating part, namely the heat absorption capacity of the heating part.
Further, in the heating stage, the heating part is only started and stopped once, and the time interval from starting to stopping is the first heating time length. Therefore, the heating part works once to heat the material to be heated to a proper temperature, the target temperature can be reached by the residual temperature of the heating part, intermittent heating without repeated power-on and power-off is not needed, the power consumption is lower, energy is saved, the environment is protected, and the service life of a device is prolonged.
Optionally, the determining the first heating time period according to the heat absorption amount of the substance to be heated required for raising the temperature of the substance to be heated from the initial temperature to the target temperature and the heat absorption amount of the heating part during the operation of the heating part includes: determining corresponding total electric energy according to the heat absorption capacity of the mass to be heated and the heat absorption capacity of the heating part; determining a time period required for the heating portion to acquire the total electric energy based on the operating power of the heating portion, and determining the time period as the first heating time period. Therefore, based on the law of conservation of energy, the working time length of the heating portion is reversely deduced according to the total heat quantity to be provided and the working power, and the working time length is the first heating time length. The scheme of the embodiment controls the heating time based on the intelligent algorithm, is beneficial to enabling the material to be heated to reach the specified temperature more efficiently with less energy consumption, and can ensure better precision.
Optionally, the temperature control method further includes: collecting the current temperature of the material to be heated during the operation of the heating part to determine the temperature variation of the material to be heated in the current collection period; the first heating time period is corrected in accordance with the amount of change in the temperature of the substance to be heated. Therefore, the deviation is corrected by adopting a cyclic algorithm, and the stop time of the heating part is adjusted according to the actual running condition of the household appliance, so that the material to be heated can be accurately heated to the target temperature after power failure. Specifically, during the operation of the heating part, the first heating time period is timely adjusted and corrected according to the actual heat absorption condition of the material to be heated, and the residual temperature of the heating part after the first heating time period is expired is ensured to be enough to heat the material to be heated to the target temperature. When improving temperature control accuracy, more accurate first heating is long to do benefit to and ensures that the heating portion does not need to provide more heats with the mode of switching on and switching off repeatedly for it is possible to save the consumption, also does benefit to and shortens heating duration.
Alternatively, the operation of acquiring the current temperature of the substance to be heated is periodically performed during the operation of the heating part. Therefore, low power consumption and temperature control accuracy can be both considered.
Optionally, the correcting the first heating time period according to the amount of change in the temperature of the substance to be heated includes: determining the heat absorption capacity of the to-be-heated material in the current acquisition period according to the heat absorption capacity of the heating part in the current acquisition period and the electric energy acquired by the heating part; determining an updated specific heat coefficient according to the heat absorption quantity of the to-be-heated substance in the current acquisition period and the temperature variation quantity of the to-be-heated substance, wherein the specific heat coefficient is the product of mass and specific heat capacity; correcting the first heating period based on the updated specific heat coefficient. Therefore, the heat absorption performance of the substance to be heated can be more accurately reflected according to the updated specific heat coefficient according to the actual temperature change condition during operation, and the more accurate first heating time length can be obtained through adjustment.
Optionally, the acquiring the current temperature of the substance to be heated during the operation of the heating part includes: after the heating part operates for a preset time period, judging whether the residual time length of continuous heating according to the original first heating time length exceeds a preset critical time length or not; and when the judgment result shows that the residual time length exceeds the preset critical time length, acquiring the current temperature of the material to be heated. Since the container containing the substance to be heated has energy dissipation of its own, and the longer the heating time, the more the energy dissipation of the container. In the case where the remaining time period is long, when the heating is completed for the remaining time period, the remaining temperature may be insufficient to heat the material to be heated to the target temperature due to excessive energy dissipation. Therefore, the scheme of the embodiment determines whether temperature measurement is needed or not according to the size of the remaining time length so as to correct the first heating time length, thereby shortening the overall heating time and having the advantage of low power consumption.
Optionally, the preset critical time period is 8 to 14 minutes. For example, the preset critical duration may be determined according to the characteristics of the wall thickness, material, and the like of the accommodating part, i.e., the container for accommodating the substance to be heated.
Optionally, the preset time period is a time period from the heating part being started to a time period when the heating temperature reaches a steady state. The heating part and the material to be heated are judged after fully absorbing heat for a period of time, so that the accurate first heating time length can be obtained under the condition of temperature measurement and judgment times as few as possible. Thereby giving consideration to low power consumption and high temperature control precision.
Optionally, the heat absorption capacity of the heating part during operation refers to: the heating portion absorbs heat during a period from start-up to a heating temperature reaching a steady state. For example, the heat absorption amount of the heating portion may be a measurement value obtained experimentally in advance, and used as a preset value in a practical application stage.
Optionally, the heat absorption capacity of the heating part during operation is calculated based on the following steps: acquiring a specific heat coefficient of the heating part, wherein the specific heat coefficient of the heating part is the product of the mass and the specific heat capacity of the heating part; acquiring the temperature variation of the heating part from the start to the time when the heating temperature reaches a stable state; the product of the specific heat coefficient of the heating portion and the amount of change in the temperature of the heating portion is determined as the heat absorption amount by the heating portion. Thus, the heat absorption capacity of the heating portion is calculated by means of experimental measurement based on a formula of specific heat capacity.
Optionally, the obtaining of the specific heat coefficient of the heating portion includes: counting the temperature variation of the heating part under different operation time lengths for many times, and calculating to obtain a corresponding specific heat coefficient; and counting the calculated previous specific heat coefficient to obtain the specific heat coefficient of the heating part. Therefore, the calculation accuracy can be improved by taking an average value through multiple experiments, and more accurate heat absorption capacity of the heating part can be obtained.
Alternatively, the endothermic amount of the substance to be heated required for raising the temperature of the substance to be heated from the initial temperature to the target temperature is calculated based on the following steps: acquiring a specific heat coefficient of the to-be-heated substance, wherein the specific heat coefficient of the to-be-heated substance is the product of the mass and the specific heat capacity of the to-be-heated substance; determining a difference between the target temperature and the initial temperature as a temperature change amount of the substance to be heated; the product of the specific heat coefficient of the substance to be heated and the amount of change in the temperature of the substance to be heated is determined as the amount of heat absorption by the substance to be heated. Thereby, the endothermic amount of the mass to be heated is determined based on the specific heat capacity formula.
Optionally, the obtaining of the specific heat coefficient of the to-be-heated substance includes: acquiring the temperature variation of the material to be heated in a preset time period; dividing the amount of heat absorbed by the substance to be heated in the preset time period by the amount of change in temperature of the substance to be heated in the preset time period to obtain the specific heat coefficient of the substance to be heated. Therefore, the specific heat coefficient can be obtained without measuring the mass of an additional substance to be heated and determining the specific heat capacity, and the operation is simple and convenient. Further, the specific heat coefficient of the substance to be heated is determined according to the temperature change of the substance to be heated in the actual heating stage, and the accuracy is also higher.
Optionally, the heat absorption amount of the substance to be heated in the preset time period is a part of the electric energy obtained by the heating part in the preset time period minus the heat absorption amount of the heating part in the preset time period, so as to satisfy the law of energy conservation.
Optionally, the temperature control method further includes: receiving a heat preservation instruction, wherein the heat preservation instruction comprises heat preservation stop time; recording a time period before the expiration of the heat retention stop time after the temperature of the substance to be heated is raised to the target temperature as a heat retention period during which the temperature of the substance to be heated is monitored; and controlling the heating part to be operated or not to be operated according to the temperature change of the substance to be heated in the holding time period so as to keep the temperature of the substance to be heated within a preset temperature range, wherein the preset temperature range is determined according to the target temperature. Therefore, the household appliance further has a heat preservation function, and the working condition of the heating part is controlled by detecting the temperature change condition of the material to be heated in the heat preservation stage, so that the heat preservation effect is effectively achieved.
Optionally, the controlling the heating part to operate or not to operate according to the temperature change of the substance to be heated in the keeping warm period to maintain the temperature of the substance to be heated within a preset temperature range includes: and when the temperature of the material to be heated is monitored to be lower than the preset temperature range, starting the heating part for heating, and stopping the operation of the heating part when the operation time length of the heating part reaches a second heating time length so as to enable the temperature of the material to be heated to rise back to be in the preset temperature range. Therefore, the working time of the heating part at each time is determined by setting the second heating time period, and the heat preservation effect is realized.
Alternatively, the second heating time period may be determined based on a difference between the current temperature of the substance to be heated and a target temperature. Therefore, the working time of the heating part working at this time is calculated in real time according to the current temperature, and accurate heat preservation is facilitated. During the holding period, the current temperature of the substance to be heated may be different every time heating is triggered, and there is also a slight difference in the corresponding second heating period.
Optionally, the second heating time period is used for raising the temperature of the substance to be heated back to the target temperature from at least the lowest value of the preset temperature range by the heating portion. Specifically, the second heating period is determined according to the target temperature and the lowest value of the preset temperature range. Since both temperature values are fixed values, the corresponding second heating period is also a fixed value. Therefore, in the heat preservation stage, the heating part works for each time according to the fixed time length, and the overall calculated amount can be reduced while heat is effectively preserved. Further, after the target temperature is obtained in the heating stage, a second heating time period can be calculated for use in the heat preservation stage.
An embodiment of the present invention further provides a home appliance, including: a heating part for heating a substance to be heated; a holding part for holding the substance to be heated; a control module coupled with the heating part, the control module performing the above method to heat the substance to be heated to the target temperature. The household appliance adopting the scheme of the embodiment can realize accurate temperature control of the material to be heated, and has the advantages of short heating time and low power consumption.
Optionally, the receiving portion and the heating portion are integrated, or at least partially in physical contact, to ensure efficient heat radiation.
Optionally, the household appliance is a heating food processor.
Drawings
Fig. 1 is a schematic view of a household appliance according to an embodiment of the present invention;
FIG. 2 is a flow chart of a temperature control method for the household appliance shown in FIG. 1;
FIG. 3 is a graph showing the relationship between the operating time period of the heating portion and the temperature of the substance to be heated, using the method shown in FIG. 2;
FIG. 4 is a flowchart of one embodiment of step S102 of FIG. 2;
in the drawings:
1-household appliances; 10-a heating part; 11-a locus of containment; 110-a cover portion; 12-a control module; 13-a base; 14-a handle portion; 15-an interaction module; 16-temperature sensor.
Detailed Description
As described in the background art, in the conventional home appliances such as a heating cooker, when heating, the temperature is stopped at a fixed temperature and the temperature reaches a target temperature depending on the residual temperature, and the temperature of a substance to be heated is not accurately controlled.
Further, the existing temperature control mode is to repeatedly measure the temperature and repeatedly turn on and off the intermittent heating mode of the heating module to gradually approach the set temperature, so that the heating time is long and the power consumption is large.
To solve the above technical problems, embodiments of the present invention provide a temperature control method for a home appliance including a heating part for heating a substance to be heated; the method comprises the following steps: acquiring a target temperature and an initial temperature of the substance to be heated; determining a first heating time period according to the heat absorption quantity of the substance to be heated required for raising the temperature of the substance to be heated from the initial temperature to the target temperature and the heat absorption quantity of the heating part during the operation of the heating part; starting the heating part to heat, and stopping the heating part when the operation time of the heating part reaches the first heating time; wherein, after the operation of the heating unit is stopped, the substance to be heated is continuously heated to the target temperature by the residual heat of the heating unit, and the residual heat of the heating unit is generated based on the amount of heat absorbed by the heating unit.
According to the scheme of the embodiment, accurate temperature control is achieved by estimating the fixed heating time and relying on the residual temperature to reach the target temperature. Specifically, the first heating period is a period required for the amount of heat supplied to the substance to be heated to reach the heat absorption amount of the substance to be heated, and the amount of heat supplied to the heating portion to reach the heat absorption amount of the heating portion. Therefore, the heating time is reasonably estimated, so that after the heating part stops working, the substance to be heated can be accurately heated to the target temperature by depending on the residual temperature of the heating part, namely the heat absorption capacity of the heating part.
Further, in the heating stage, the heating part is only started and stopped once, and the time interval from starting to stopping is the first heating time length. Therefore, the heating part works once to heat the material to be heated to a proper temperature, the target temperature can be reached by the residual temperature of the heating part, intermittent heating without repeated power-on and power-off is not needed, the power consumption is lower, energy is saved, the environment is protected, and the service life of a device is prolonged.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 1 is a schematic view of a household appliance according to an embodiment of the present invention; fig. 2 is a flowchart of a temperature control method for the home appliance shown in fig. 1.
This embodiment domestic appliance can be for heating the household electrical appliances that needs heating solution, food etc. such as cooking machine, health preserving kettle. This embodiment collectively refers to a solution, food, and the like as a substance to be heated.
Specifically, referring to fig. 1, in the present embodiment, the household appliance 1 may include: a heating part 10 for heating a substance to be heated; a housing part 11 for housing the substance to be heated; a control module 12 coupled to the heating part 10, the control module 12 performing a temperature control method shown in fig. 2 to heat the material to be heated to a target temperature.
The household appliance 1 adopting the scheme of the embodiment can realize accurate temperature control of the material to be heated, and has the advantages of short heating time and low power consumption.
In one embodiment, the heating part 10 may be a heating plate, and the heating part 10 is disposed at the bottom of the accommodating part 11 to effectively transfer heat radiation to the accommodating part 11.
In one embodiment, the receiving portion 11 and the heating portion 10 may be integrated to ensure efficient heat radiation. For example, the heating part 10 and the accommodating part 11 may be an integrated pot body design, the accommodating part 11 encloses a pot body, and the heating part 10 is a pot bottom. The heating part 10 is connected to a power supply to convert electricity into heat.
In one variation, the receiving portion 11 and the heating portion 10 are at least partially in physical contact to achieve a separate design while ensuring efficient heat radiation, facilitating cleaning. For example, the receiving part 11 may be a container made of glass or heat-resistant plastic, and the heating part 10 may be similar to an induction cooker and transfer heat radiation to the receiving part 11 placed thereon. Alternatively, the bottom of the accommodating part 11 may be provided with an electric heating wire, and the heating part 10 may be detachably coupled with the electric heating wire to achieve more rapid heat transfer.
In one implementation, the receiving portion 11 may include a cover portion 110, and the cover portion 110 is adapted to open or close the receiving cavity of the receiving portion 11.
In a specific implementation, the household appliance 1 may further include a base 13, and the base 13 may be used for accommodating the control module 12 and serving as a base of the household appliance 1. Further, the heating part 10 may be provided at an upper end of the base 13.
In one implementation, the household appliance 1 may further include a handle portion 14, and the handle portion 14 may be connected to the accommodating portion 11 for being held by a user.
In one implementation, the household appliance may further include an interaction module 15, and the interaction module 15 is configured to receive a user instruction. The interaction module 15 is coupled to the control module 12 such that user instructions are communicated to the control module 12.
In particular, the user instruction may include a target temperature, or related information indicating the target temperature. For example, the user can select a specific cooking mode, such as cooking porridge, boiling water, etc., through the interaction module 15, the control module 12 stores target temperatures corresponding to different cooking modes in advance, and in response to receiving the specific cooking mode input by the user, the control module 12 can determine the corresponding target temperature.
The interaction module 15 and the control module 12 may be integrated. Alternatively, the two may be disposed at different positions of the household appliance 1.
The interaction module 15 may be a touch screen.
The user command may also be used to control the operation or non-operation of the heating portion 10.
The user instructions may also include warm keeping indication information. The heat preservation indication information comprises heat preservation duration.
In one implementation, the household appliance 1 may further include a communication module (not shown) coupled to the control module 12 to receive the user instruction. And the communication module receives the user instruction in a wireless mode or a wired mode such as Bluetooth, Wi-Fi and the like.
Further, the control module 12 may also communicate with a smart device of the user through the communication module to prompt the user of the operation state of the household appliance 1.
In one implementation, the communication module may replace the interaction module 15, that is, a user may remotely control the operation of the household appliance 1 through a mobile phone, an IPAD, and the like.
In a specific implementation, the household appliance 1 may further comprise an electrical connector for connecting an external power source to supply power to the household appliance 1.
In a specific implementation, the household appliance 1 may further comprise a temperature sensor 16 for acquiring the real-time temperature of the substance to be heated.
Specifically, the temperature sensor 16 may be provided on the side of the heating module 10 that is in contact with the substance to be heated to ensure accuracy of temperature acquisition.
For example, the temperature sensor 16 may protrude upward from the heating pan and come into direct contact with the substance to be heated placed in the accommodating portion 11 to collect the current temperature.
Referring to fig. 1 and 2, the temperature control method for the household appliance 1 according to the present embodiment may include the steps of:
step S101, acquiring a target temperature and an initial temperature of the material to be heated;
a step S102 of determining a first heating time period based on an amount of heat absorption of the substance to be heated required for the substance to be heated to increase from an initial temperature to a target temperature and an amount of heat absorption of the heating portion during operation of the heating portion 10;
step S103, starting the heating unit 10 to heat, and stopping the operation of the heating unit 10 when the operation time of the heating unit 10 reaches the first heating time;
after the operation of the heating unit 10 is stopped, the temperature of the material to be heated is continuously raised to the target temperature by the residual temperature of the heating unit 10, and the residual temperature of the heating unit 10 is generated based on the heat absorption amount of the heating unit.
Therefore, according to the scheme of the embodiment, accurate temperature control is achieved by estimating the fixed heating time and relying on the residual temperature to reach the target temperature. Specifically, the first heating period is a period required for the amount of heat supplied to the substance to be heated to reach the heat absorption amount of the substance to be heated, and the amount of heat supplied to the heating portion 10 to reach the heat absorption amount of the heating portion. Therefore, after the heating part 10 stops working, the heating material to be heated can be accurately heated to the target temperature by the residual temperature of the heating part 10, namely the heat absorption capacity of the heating part, through reasonably estimating the heating time.
Further, in the heating stage, the heating unit 10 is only turned on and off once, and the time interval from the turning on to the turning off is the first heating time period. Therefore, the heating part 10 works once to heat the material to be heated to a proper temperature, and then the target temperature can be reached by the residual temperature of the heating part 10, intermittent heating without repeatedly switching on and off is not needed, power consumption is lower, energy is saved, environment is protected, and the service life of a device is prolonged.
In one implementation, the target temperature may be determined based on user instructions received by the interaction module 15 and/or communication module. For convenience of description, the target temperature is hereinafter denoted as T3。
In one implementation, the initial temperature may be based on the temperature of the substance to be heated collected by the temperature sensor 16 before starting heating. For convenience of description, the initial temperature is hereinafter denoted as T0。
In one implementation, referring to fig. 1 and 4, the step S102 may include the following steps:
step S1021, determining corresponding total electric energy according to the heat absorption quantity of the mass to be heated and the heat absorption quantity of the heating part;
in step S1022, a time period required for the heating portion 10 to acquire the total electric energy is determined based on the operating power of the heating portion 10, and the time period is determined as the first heating time period.
The first heating time period can be determined by combining the calculation of the measured value and the calculation of the preset parameter. The preset parameters can simulate the conventional actual use environment as much as possible. The test is generally carried out at room temperature and standard atmospheric pressure without overfire air so as to reduce errors, and the obtained value is introduced into the calculation so that the energy dissipation can be ignored.
Specifically, after the heating portion 10 operates based on the law of conservation of energy without considering energy dissipation, the total electric energy obtained by the heating portion 10 is converted into a heating portion heat absorption amount of the heating portion 10 and a substance heat absorption amount of the substance to be heated. As shown in equation 1:
Qelectric power＝QHeating part+QThe material to be heated (1)
Wherein Q isElectric powerThe total electric power obtained for the heating portion 10; qHeating partAbsorbing heat for the heating portion; qThe material to be heatedThe heat absorption capacity of the material to be heated.
Further, the total electric energy QElectric powerEquation 2 is also followed:
Qelectric power＝U0·I0·t1 (2)
Wherein, U0A rated voltage of the heating portion 10; i is0A rated current of the heating portion 10; u shape0·I0The operating power of the heating part 10; t is t1The first heating period.
That is, the total electric energy obtained by operating the heating section 10 at its operating power for the first heating period of time needs to be sufficient to support the heat absorption amount of the heating section 10 during operation (i.e., the heating section heat absorption amount Q)Heating part) But also sufficient to support the material to be heated from the initial temperature T0Is raised to the target temperature T3Required heat absorption quantity Q of the substance to be heatedThe material to be heated。
Wherein the material to be heated is brought from an initial temperature T0Is raised to the target temperature T3Heat absorption Q of the matter to be heated to be absorbedThe material to be heatedCan be determined by theoretical calculations.
Heating portion heat absorption amount Q converted by the heating portion 10 during operationHeating partIt is suitable to continue to transfer the heat radiation to the material to be heated after the operation of the heating section 10 is stopped, that is, to continue heating using the remaining temperature of the heating section 10. Heat absorption capacity Q of the heating portionHeating partCan be determined in advance by experiments.
By combining the above theoretical calculation and the experimentally determined heat absorption capacity, the total electric energy Q required to be obtained by the heating part 10 in the current heating stage can be determinedElectric powerThen, this time according to the heating section 10Operating power U of the heating phase0·I0Obtaining the first heating time t by backward pushing1。
In one implementation, the heating portion 10 absorbs heat Q during operationHeating partThe method comprises the following steps: the heating portion 10 absorbs heat from the start-up to the time when the heating temperature reaches a steady state. For example, the heating portion absorbs heat QHeating partMay be a measurement value obtained experimentally in advance and used as a preset value in a practical application stage.
Specifically, a heating portion heat absorption amount Q of the heating portion 10 during operationHeating partCan be calculated based on the following steps: acquiring a specific heat coefficient of the heating part 10, wherein the specific heat coefficient of the heating part 10 is the product of the mass and the specific heat capacity of the heating part 10; acquiring a heating part temperature variation from the start of the heating part 10 to the time when the heating temperature reaches a steady state; determining a product of a specific heat coefficient of the heating portion 10 and the amount of change in the heating portion temperature as the heating portion heat absorption amount QHeating part. Therefore, the heat absorption capacity Q of the heating part is calculated and obtained through a mode of experimental measurement based on a formula of specific heat capacityHeating part。
For example, the heating portion absorbs heat QHeating partIt can be calculated based on equation 3:
Qheating part＝Ch·mh·ΔT (3)
Wherein, ChThe unit may be J/(kg ℃) which is the specific heat capacity of the heating section 10; m ishThe unit may be kg for the mass of the heating part 10; Δ T is the amount of change in the heating portion temperature, and may be in units of ℃.
Considering that the mass of the heating part 10 is fixed, C may be seth·mhRegarded as constant and recorded as heating coefficient alphah。
In one embodiment, the specific heat coefficient α of the heating portion 10 is obtainedhThe method can comprise the following steps: counting the temperature variation (namely delta T) of the heating part 10 under different operation time lengths for a plurality of times, and calculating to obtain a corresponding specific heat coefficient alphahi，1≤i≤n，n>1; historical specific heat coefficient alpha obtained by statistical calculationhiTo obtain a specific heat coefficient alpha of the heated portion 10h. Therefore, the calculation accuracy can be improved by taking an average value through multiple experiments, and more accurate heat absorption capacity Q of the heating part can be obtainedHeating part。
Specifically, the heating portion heat absorption amount Q of the heating portion 10Heating partThe heating portion 10 can be regarded as being at the rated current I0Sum voltage U0Lower heating value. In the experimental stage, the heating part 10 may be controlled at the rated current I0Sum voltage U0Lower part is electrified tn1,tn2,tn3,...,tnnThe time length is measured and the corresponding maximum temperature rise value of the heating part 10 is recorded as delta T1,ΔT2,ΔT3,...,ΔTnCorresponding heat absorption capacity Q of heating partHeating partAre respectively Q1＝U0·I0·tn1，Q2＝U0·I0·tn2,Q3＝U0·I0·tn3,...,Qn＝U0·I0·tnn。
Based on the specific heat coefficient alpha under different operation times can be calculatedhi：
Further, the heat capacity coefficient alpha of the past heat can be adjustedhiTaking an arithmetic average value to obtain a specific heat coefficient alpha of the heating portion 10hAs shown in equation 4:
thereby, the heating portion heat absorption amount Q of the heating portion 10Heating partCan be expressed as: qHeating part＝αh·ΔTh. It is composed ofMiddle, Delta ThThe amount of change in the heating portion temperature from the start-up of the heating portion 10 to the time when the heating temperature reaches a steady state.
A heating portion temperature variation amount Δ T from the start of the heating portion 10 to when the heating temperature reaches a steady statehIt can also be determined in advance by experiments. Specifically, the maximum amount of water is added to the receiving portion 11, the temperature of the heating portion 10 is measured in real time, and the temperature rise Δ T of the heating portion 10 is recorded after the temperature value is constanthThe corresponding heating time is denoted th. In other words, referring to FIG. 3, thThe time required for the heating unit 10 to reach a steady temperature (i.e., the maximum time required for the heating unit 10 to reach a steady state temperature) for starting heating after the maximum amount of liquid is charged into the storage portion 11 is generally within 80 seconds. Heating portion 10 is operated for time thThe temperature of the material to be heated is denoted T1。
In one embodiment, the heat absorption quantity Q of the substance to be heated is required for raising the temperature of the substance to be heated from the initial temperature to the target temperatureThe material to be heatedCan be calculated based on the following steps: acquiring a specific heat coefficient of the to-be-heated substance, wherein the specific heat coefficient of the to-be-heated substance is the product of the mass and the specific heat capacity of the to-be-heated substance; setting the target temperature T3And initial temperature T0The difference is determined as the amount of change in the temperature of the substance to be heated; the product of the specific heat coefficient of the substance to be heated and the amount of change in the temperature of the substance to be heated is determined as the amount of heat absorption by the substance to be heated. Thereby, the endothermic amount of the mass to be heated is determined based on the specific heat capacity formula.
Further, the acquiring of the specific heat coefficient of the substance to be heated may include the steps of: acquiring the temperature variation of the material to be heated in a preset time period; dividing the amount of heat absorbed by the substance to be heated in the preset time period by the amount of change in temperature of the substance to be heated in the preset time period to obtain the specific heat coefficient of the substance to be heated. Therefore, the specific heat coefficient can be obtained without measuring the mass of an additional substance to be heated and determining the specific heat capacity, and the operation is simple and convenient. Further, the specific heat coefficient of the substance to be heated is determined according to the temperature change of the substance to be heated in the actual heating stage, and the accuracy is also higher.
For example, the preset period may be a period of time that elapses from the start-up of the heating portion 10 until the heating temperature reaches a steady state. That is, the temperature of the substance to be heated corresponding to FIG. 3 is from the initial temperature T0Up to T1Elapsed time th。
At a time thHeat absorption quantity Q of the material to be heatedThe material to be heatedIs QThe material to be heated＝CL·mL·(T1-T0). Wherein, CLIs the specific heat capacity of the substance to be heated; m isLIs the mass of the substance to be heated. C is to beL·mLRegarded as constant and recorded as heating coefficient alphaL。
The heat absorption amount of the substance to be heated in the preset time period is the part of the electric energy obtained by the heating part 10 in the preset time period minus the heat absorption amount of the heating part 10 in the preset time period, so as to satisfy the law of energy conservation. Thus, the following equation 5 can be obtained:
αh·ΔTh+αL·(T1-T0)＝U0·I0·th (5)
based on equation 5, the heating coefficient α can be obtained by conversionLAs shown in equation 6:
further, substituting the obtained parameters into equation 1 can obtain equation 7:
U0·I0·t1＝ αh·ΔTh+ αL·(T3-T0) (7)
based on equation 7, the first heating time period t can be obtained by conversion1As shown in equation 8:
therefore, based on the law of conservation of energy, the total heat Q provided according to needsElectric powerAnd operating power U0·I0The working time of the heating part 10 is obtained by reverse driving, and the working time is the first heating time t1. The scheme of the embodiment controls the heating time based on the intelligent algorithm, is beneficial to enabling the material to be heated to reach the specified temperature more efficiently with less energy consumption, and can ensure better precision.
In a specific implementation, the temperature control method according to this embodiment may further include: collecting the current temperature of the material to be heated during the operation of the heating part 10 to determine the amount of change in the temperature of the material to be heated in the current collection period; correcting the first heating time period t according to the amount of change in the temperature of the material to be heated1. Therefore, the deviation correction is carried out by adopting a cyclic algorithm, and the stop timing of the heating part 10 is adjusted according to the actual running condition of the household appliance 1, so that the material to be heated can be accurately heated to the target temperature T after the power failure3。
Specifically, the first heating time period t is adjusted and corrected in time according to the actual heat absorption condition of the material to be heated during the operation of the heating section 101Ensuring a first heating period t1The remaining temperature of the heating part 10 after the lapse of time is sufficient to raise the temperature of the material to be heated to the target temperature T3. While the accuracy of temperature control is improved, the more accurate first heating time t1It is advantageous to ensure that the heating portion 10 does not supply more heat in a manner of repeatedly turning on and off the power, so that it is possible to save power consumption, and it is also advantageous to shorten the heating time period.
In one specific implementation, the amount of change in the temperature of the material to be heated in the current collection period may be: the current temperature T of the material to be heated acquired in the current acquisition period1(n)Compared with the initial temperature T of the material to be heated at the time of starting heating0The amount of change in temperature of (D) is denoted as T1(n)-T0。
In particular, canAccording to the heat absorption quantity Q of the heating part in the current acquisition periodHeating partAnd electric energy Q obtained by the heating partElectric powerDetermining the heat absorption quantity Q of the mass to be heated in the current acquisition periodThe material to be heated。
Further, the heat absorption quantity Q can be obtained according to the mass to be heated in the current collection periodThe material to be heatedAnd the amount of change in temperature T of the substance to be heated1(n)-T0Determining an updated specific heat coefficient alphaL(n)。
Further, the specific heat coefficient α may be updated based on the updated specific heatL(n)Correcting the first heating time length to obtain a corrected first heating time length t1(n)。
The specific heat coefficient alpha is thus updated according to the actual temperature change during operationL(n)Can more accurately reflect the heat absorption performance of the substance to be heated, and is beneficial to adjusting to obtain more accurate first heating time length t1(n)。
For example, the updated specific heat coefficient αL(n)Can be expressed based on equation 9:
correspondingly, the corrected first heating time period t1(n)It can be expressed based on equation 10:
in a variation, the amount of change in the temperature of the material to be heated in the current collection period may further be: the difference between the current temperatures of the materials to be heated acquired in the two acquisition periods is recorded as T1(n+1)-T1(n)。
Accordingly, equation 9 can be changed to equation 11:
the corrected first heating time period t can be obtained by substituting the amount of change in the temperature of the material to be heated calculated based on the formula 11 into the formula 101(n)。
In one implementation, the operation of collecting the current temperature of the material to be heated may be periodically performed during the operation of the heating part 10. Therefore, low power consumption and temperature control accuracy can be both considered.
In one embodiment, the collecting the current temperature of the material to be heated during the operation of the heating part 10 may include: after the heating part 10 operates for a preset time period, the original first heating time period t is judged1Whether the residual time length of the continuous heating exceeds a preset critical time length or not; and when the judgment result shows that the residual time length exceeds the preset critical time length, acquiring the current temperature of the material to be heated.
Since the container (i.e., the accommodating portion 11) containing the substance to be heated has energy dissipation itself, and the longer the heating time is, the more the energy dissipation of the container is. In the case where the remaining time period is long, when the heating is completed for the remaining time period, there is a possibility that the remaining temperature is insufficient to heat the material to be heated to the target temperature T due to excessive energy dissipation3. Therefore, the scheme of the embodiment determines whether temperature measurement is needed according to the size of the residual time length so as to correct the first heating time length t1Thereby shortening the overall heating time and having the advantage of low power consumption.
Specifically, the preset critical time period may be 8 to 14 minutes. For example, the preset critical duration may be determined according to the wall thickness, material, and other characteristics of the pot body of the accommodating portion 11.
The preset period may be a period of time that elapses from the start-up of the heating portion 10 until the heating temperature reaches a steady state. That is, the temperature of the substance to be heated corresponding to FIG. 3 is from the initial temperature T0Up to T1Elapsed time th. Thus, the first heating process can be accurately performed with as few times as possible for temperature measurement and discrimination after the heating part 10 and the material to be heated have sufficiently absorbed heat for a certain period of timeThe length of the heat is long. Thereby giving consideration to low power consumption and high temperature control precision.
Further, if the remaining time length does not exceed the preset critical time length, the system can work according to the current working power until the first heating time length t1And (4) expiration.
Further, the first heating time period t is corrected1Then, during the period that the heating part 10 continues to operate, after the preset time period of the last correction, the first heating time period t after the current time is corrected is judged again1(n)Whether the remaining duration of time exceeds the preset critical duration. If the temperature of the workpiece exceeds the first heating time, the temperature acquisition operation is executed again, and the first heating time t is corrected again1。
In a typical application scenario, referring to fig. 3, the substance to be heated placed in the receptacle 11 is represented by T0Begins to be heated for 0 to t1And electrifying the heating part 10 for heating. Of course, if the first heating time period t in the time period1After the correction, the heating section 10 can be updated to 0 to t1(n)。
When the heating part 10 is operated for a first heating time period t1Or the corrected first heating time period t1(n)Then, the heating unit 10 is powered off. At this time, the current temperature of the material to be heated is T2。
After the heating unit 10 stops working, the household appliance 1 enters an after-temperature heating stage, which corresponds to a time period t in fig. 31～t2. When the time elapses to the time point t2In the meantime, the material to be heated is heated to the target temperature T by the residual heat3At this point the entire heating process is complete.
If the cooking is not provided with the heat preservation function, the household appliance 1 enters a dormant state, a standby state or a shutdown state.
Further, the control module 12 may control a prompt module (not shown in fig. 1) to send a heating completion prompt. The prompting module can be a power amplifier, an LED lamp and the like.
Alternatively, the control module 12 may send the heating completion prompt message to the smart device of the user through the communication module.
If the cooking is provided with the heat preservation function, the cooking continues to enter the heat preservation stage, and the heat preservation stopping time is assumed to be t3Then, the time period t in FIG. 3 is corresponded to2～t3。
The behaviour of the household appliance 1 during the keep warm phase will be explained in detail below.
In a specific implementation, the temperature control method according to this embodiment may further include: receiving a heat preservation instruction, wherein the heat preservation instruction comprises a heat preservation stop time t3(ii) a Raising the temperature of the material to be heated to the target temperature T3After that, the heat-retaining stop time t3A time period before expiration is recorded as a heat-retaining period during which the temperature of the substance to be heated is monitored; controlling the heating part 10 to be operated or not to be operated according to the temperature change of the material to be heated in the keeping warm period to maintain the temperature of the material to be heated within a preset temperature range according to the target temperature T3And (4) determining. Therefore, the household appliance 1 according to the present embodiment further has a heat-preserving function, and controls the operation of the heating unit 10 by detecting the temperature change of the material to be heated in the heat-preserving stage, so as to effectively achieve the heat-preserving effect.
For example, referring to fig. 3, the preset temperature range may be T3minTo T3maxIs a segment containing the target temperature T3The temperature interval of (1). A lower limit T of the preset temperature range3minAnd a target temperature T3The difference between them may be equal to its upper limit T3maxTo the target temperature T3The difference between them. For example, the difference may be around 2 ℃.
Alternatively, the two differences may not be equal.
Alternatively, in practical applications, the lower limit T may be adjusted as needed3minTemperature T from target3And an upper limit T3maxTemperature T from target3The difference of (a). For example, the temperature may be determined based on the temperature accuracy requirement for the incubation.
In one embodiment, when it is monitored that the temperature of the material to be heated is lower than the preset temperature range, the heating unit 10 may be started to heat, and the operation of the heating unit 10 may be stopped when the operation time period of the heating unit 10 reaches the second heating time period, so that the temperature of the material to be heated is raised back to within the preset temperature range. Thus, the heat-retaining effect is achieved by setting the second heating time period to determine the operating time period of the heating portion 10 each time.
Specifically, the second heating period may be in accordance with the current temperature of the substance to be heated and the target temperature T3The difference between them is determined. Therefore, the working time of the heating part 10 in the work is calculated in real time according to the current temperature, and accurate heat preservation is facilitated. During the holding period, the current temperature of the substance to be heated may be different every time heating is triggered, and there is also a slight difference in the corresponding second heating period.
For example, during the second heating period, equation 1 may be further expressed as equation 12:
U0·I0·ta＝αh·(T3-Tx)+αL·(T3-Tx) (12)
wherein, taFor the second heating period; t isxIs the current temperature of the substance to be heated.
Accordingly, the second heating time period taCan be calculated according to equation 13:
in one variant, the second heating period taCan be used to adjust the temperature of the material to be heated by the heating part 10 at least from the lowest value T of the preset temperature range3minBack to the target temperature T3。
In particular, the second heating period taCan be based on the target temperature T3And the lowest value T of the preset temperature range3minAnd (4) determining. Since both temperature values are fixed values, respectivelyTwo heating periods taIs also a constant value.
Accordingly, the formula 12 can be changed to the formula 14:
U0·I0·ta＝αh·(T3-T3min)+αL·(T3-T3min) (14)
accordingly, the formula 13 can be changed to the formula 15:
therefore, in the heat preservation stage, each time the heating part 10 works, the heating part works according to a fixed time length, and the overall calculation amount can be reduced while heat preservation is effectively carried out.
Further, the target temperature T is obtained in the heating stage3Then, the second heating time period t can be calculatedaFor use in the heat preservation stage.
In one embodiment, the heating section 10 is heated for a second heating time period taOperating power during operation, and the first heating period t of the heating phase1The operating power during operation may be different. Accordingly, the denominator of the aforementioned formula 13 or formula 15 may be set according to the second heating time period t of the heating part 10aThe actual operating power during operation is calculated.
In one embodiment, during the heat preservation stage, the current temperature of the material to be heated can be monitored in real time, and when the temperature of the material to be heated is found to be in a downward trend and approaches the lower limit T of the preset temperature range3minThen, the heating part 10 can be controlled to operate for the second heating time period ta. Therefore, the temperature of the substance to be heated can be better prevented from falling outside the preset temperature range in the heat preservation stage.
In the temperature control process according to the embodiment, various data of the heating part 10 and the material to be heated can be collected and calculated for multiple times, and data support is provided for storing user habits and analyzing big data.
Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even if only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless differently expressed. In particular implementations, features from one or more dependent claims may be combined with features of the independent claims and features from respective independent claims may be combined in any appropriate manner and not merely in the specific combinations enumerated in the claims.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A temperature control method for a home appliance including a heating part for heating a substance to be heated; characterized in that the method comprises:
acquiring a target temperature and an initial temperature of the substance to be heated;
determining a first heating time period according to the heat absorption quantity of the substance to be heated required for raising the temperature of the substance to be heated from the initial temperature to the target temperature and the heat absorption quantity of the heating part during the operation of the heating part;
starting the heating part to heat, and stopping the heating part when the operation time of the heating part reaches the first heating time;
wherein, after the operation of the heating unit is stopped, the substance to be heated is continuously heated to the target temperature by the residual heat of the heating unit, and the residual heat of the heating unit is generated based on the amount of heat absorbed by the heating unit.
2. The temperature control method according to claim 1, wherein the determining the first heating time period based on an amount of heat absorption of the substance to be heated required for the substance to be heated to be warmed from the initial temperature to the target temperature and an amount of heat absorption of the heating portion during operation of the heating portion includes:
determining corresponding total electric energy according to the heat absorption capacity of the mass to be heated and the heat absorption capacity of the heating part;
determining a time period required for the heating portion to acquire the total electric energy based on the operating power of the heating portion, and determining the time period as the first heating time period.
3. The temperature control method according to claim 1, further comprising:
collecting the current temperature of the material to be heated during the operation of the heating part to determine the temperature variation of the material to be heated in the current collection period;
the first heating time period is corrected in accordance with the amount of change in the temperature of the substance to be heated.
4. The temperature control method according to claim 3, wherein the correcting the first heating time period in accordance with the amount of change in the temperature of the substance to be heated includes:
determining the heat absorption capacity of the to-be-heated material in the current acquisition period according to the heat absorption capacity of the heating part in the current acquisition period and the electric energy acquired by the heating part;
determining an updated specific heat coefficient according to the heat absorption quantity of the to-be-heated substance in the current acquisition period and the temperature variation quantity of the to-be-heated substance, wherein the specific heat coefficient is the product of mass and specific heat capacity;
correcting the first heating period based on the updated specific heat coefficient.
5. The temperature control method according to claim 3 or 4, wherein the acquiring of the current temperature of the substance to be heated during operation of the heating portion includes:
after the heating part operates for a preset time period, judging whether the residual time length of continuous heating according to the original first heating time length exceeds a preset critical time length or not;
and when the judgment result shows that the residual time length exceeds the preset critical time length, acquiring the current temperature of the material to be heated.
6. The temperature control method according to claim 5, wherein the preset critical time period is 8 to 14 minutes.
7. The temperature control method according to any one of claims 1 to 4, characterized by further comprising:
receiving a heat preservation instruction, wherein the heat preservation instruction comprises heat preservation stop time;
recording a time period before the expiration of the heat retention stop time after the temperature of the substance to be heated is raised to the target temperature as a heat retention period during which the temperature of the substance to be heated is monitored;
and controlling the heating part to be operated or not to be operated according to the temperature change of the substance to be heated in the holding time period so as to keep the temperature of the substance to be heated within a preset temperature range, wherein the preset temperature range is determined according to the target temperature.
8. The temperature control method according to claim 7, wherein the controlling the heating part to be operated or not operated according to the temperature change of the substance to be heated in the keeping warm period to maintain the temperature of the substance to be heated within a preset temperature range comprises:
and when the temperature of the material to be heated is monitored to be lower than the preset temperature range, starting the heating part for heating, and stopping the operation of the heating part when the operation time length of the heating part reaches a second heating time length so as to enable the temperature of the material to be heated to rise back to be in the preset temperature range.
9. The temperature control method according to claim 8, wherein the second heating time period is determined according to a difference between a current temperature of the substance to be heated and a target temperature.
10. The temperature control method according to claim 8, wherein the second heating time period is used to raise the temperature of the substance to be heated back to the target temperature from at least a lowest value of the preset temperature range by the heating portion.
11. A household appliance (1), characterized in that it comprises:
a heating section (10) for heating a substance to be heated;
a housing part (11) for housing the substance to be heated;
a control module (12) coupled to the heating portion (10), the control module (12) performing the method of any of the preceding claims 1 to 10 to heat the substance to be heated to the target temperature.
12. Household appliance (1) according to claim 11, characterized in that said housing (11) and said heating portion (10) are integrated, or at least partially in physical contact.
13. A household appliance (1) as in claim 11, characterized by the fact that the household appliance (1) is a heating processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623841.3A CN113867435A (en) | 2020-06-30 | 2020-06-30 | Temperature control method for household appliance and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010623841.3A CN113867435A (en) | 2020-06-30 | 2020-06-30 | Temperature control method for household appliance and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113867435A true CN113867435A (en) | 2021-12-31 |
Family
ID=78982018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010623841.3A Pending CN113867435A (en) | 2020-06-30 | 2020-06-30 | Temperature control method for household appliance and household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113867435A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115307435A (en) * | 2022-08-05 | 2022-11-08 | 广东高景太阳能科技有限公司 | Method and device for heating silicon rod by using waste heat energy |
-
2020
- 2020-06-30 CN CN202010623841.3A patent/CN113867435A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115307435A (en) * | 2022-08-05 | 2022-11-08 | 广东高景太阳能科技有限公司 | Method and device for heating silicon rod by using waste heat energy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9109960B2 (en) | Estimating temperature | |
| JP5629031B1 (en) | Cooking device | |
| CN101513325A (en) | Electric cooking appliance and heating control method thereof | |
| CN113867435A (en) | Temperature control method for household appliance and household appliance | |
| GB2536000A (en) | An electric liquid heating appliance | |
| CN112914373A (en) | Cooking control method and device and electric stewpan | |
| CN207095041U (en) | The control device and server of water heater | |
| CN111265103B (en) | Method and device for controlling temperature and cooking appliance | |
| RU93161U1 (en) | HEATER TEMPERATURE REGULATOR | |
| CN114631737B (en) | Control method for cooking rice by cooking appliance and cooking appliance | |
| JP2004324905A (en) | Storage type water heater | |
| CN205162721U (en) | Mini rice cooker's direct temperature sensing structure | |
| CN205004793U (en) | Portable energy -conservation lunch -box of cooking | |
| CN113142968B (en) | Cooking appliance, control method of cooking appliance, and computer-readable storage medium | |
| CN106970664A (en) | Temperature control system, method and temperature sense probe | |
| KR102297081B1 (en) | Method and device for automatic control of heating performance of cooking utensils and cooking utensils | |
| CN104791890A (en) | Intelligent control electric warming device based on single chip microcomputer | |
| CN102151070B (en) | Cooking device | |
| CN219048076U (en) | Electric kettle | |
| CN217285447U (en) | Pot lid, liquid container and liquid heating device with temperature detects function | |
| EP3462273A1 (en) | Stand-alone programmable rotary thermostat and method for transmitting heating data to the thermostat | |
| JP5855198B2 (en) | Cooking device | |
| JP2000041835A (en) | Heat insulation cooker | |
| CN110037563A (en) | Method for heating and controlling, control device, heating component and cooking apparatus | |
| JP2003222402A (en) | Electric equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |