CN108720627A - The control method of temperature measuring equipment, temp measuring system and cooking apparatus - Google Patents

The control method of temperature measuring equipment, temp measuring system and cooking apparatus Download PDF

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Publication number
CN108720627A
CN108720627A CN201710248153.1A CN201710248153A CN108720627A CN 108720627 A CN108720627 A CN 108720627A CN 201710248153 A CN201710248153 A CN 201710248153A CN 108720627 A CN108720627 A CN 108720627A
Authority
CN
China
Prior art keywords
temperature
cookware
cooking apparatus
module
measuring equipment
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
Application number
CN201710248153.1A
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Chinese (zh)
Inventor
刘志才
王志锋
马志海
区达理
冯江平
王帅
刘经生
梅长云
伍世润
尹二强
范志荣
李小龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Original Assignee
Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd filed Critical Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority to CN201710248153.1A priority Critical patent/CN108720627A/en
Publication of CN108720627A publication Critical patent/CN108720627A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • 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
    • G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
    • G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • 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
    • A47J2201/00—Devices having a modular construction

Abstract

The present invention discloses the control method of a kind of temperature measuring equipment, temp measuring system and cooking apparatus, wherein temperature measuring equipment is used for cooking apparatus, including mounting portion, the first temperature measurement module and first communication module；Mounting portion with the cookware side wall being placed on cooking apparatus detachably installing；First temperature measurement module is fixedly connected with mounting portion, for detecting the nearly bottom temperature away from bottom wall preset height position in cookware；First communication module is electrically connected with the first temperature measurement module, and cooking apparatus is sent to for nearly bottom temperature.Invention additionally discloses a kind of control methods of cooking apparatus, when nearly bottom temperature meets preset condition, the control module control heater stop heating of cooking apparatus.The accuracy to cooking apparatus temperature detection can be improved in technical scheme of the present invention, prevents dry combustion method.

Description

The control method of temperature measuring equipment, temp measuring system and cooking apparatus
Technical field
The present invention relates to cooking apparatus field, more particularly to the control of a kind of temperature measuring equipment, temp measuring system and cooking apparatus Method.
Background technology
Common cooking apparatus on the market at present, such as electromagnetic oven, cookware temperature transducer are typically mounted on electromagnetic oven Microcrystal face plate lower surface, i.e. cookware temperature transducer and cookware be spaced one layer, this allows for cookware temperature transducer It is not the temperature of direct detection cookware, the cookware temperature value that this indirect thermometric mode detects is not only very inaccurate, also has Apparent hysteresis quality causes, when dry combustion method occurs for cookware, to close cooking apparatus in time, protect cookware.
Invention content
The main object of the present invention is to provide a kind of temperature measuring equipment, it is intended to improve to the accurate of cooking apparatus temperature detection Property, prevent dry combustion method.
To achieve the above object, temperature measuring equipment proposed by the present invention is used for cooking apparatus, including mounting portion, the first thermometric mould Block and first communication module, the mounting portion with the cookware side wall being placed on the cooking apparatus detachably installing；It is described First temperature measurement module is fixedly connected with the mounting portion, for detecting the nearly bottom temperature away from bottom wall preset height position in the cookware Degree；The first communication module is electrically connected with first temperature measurement module, for the nearly bottom temperature to be sent to the culinary art Utensil.
Preferably, the mounting portion is hanging part or clamping piece, to be mounted on or be held on the upper of the cookware side wall Edge.
Preferably, the first communication module is wireless communication module.
Preferably, first temperature measurement module be thermoprobe, the thermoprobe in upward and downward be extended, upper end with Mounting portion connection, the thermoprobe include acicular shell and several thermistors being packaged in the shell, often The two poles of the earth of one thermistor are respectively connected with temperature sensor line, and the temperature sensor line stretches out the shell and communicated with described first Module connects, and several thermistors include first heat in the cookware and away from preset height described in bottom wall Quick resistance.
Preferably, the preset height is 2mm~5mm.
Preferably, the thermistor is equipped with multiple, and multiple thermistors are vertically to being intervally arranged, and multiple institutes It states and is located at the lowermost thermistor in thermistor for first thermistor.
The present invention also proposes a kind of temp measuring system, which includes cooking apparatus and temperature measuring equipment；The cooking pot Tool includes heating device and control module, and the heating device is electrically connected with the control module, and is put on the heating device It is equipped with cookware；The temperature measuring equipment includes mounting portion, the first temperature measurement module and first communication module, the mounting portion to set It is detachably installed in the cookware side wall on the cooking apparatus；First temperature measurement module is fixedly connected with the mounting portion, is used In the nearly bottom temperature away from bottom wall preset height position in the detection cookware；The first communication module and the first thermometric mould Block is electrically connected, the control module for the nearly bottom temperature to be sent to the cooking apparatus.
Preferably, the cooking apparatus further includes the second temperature measurement module, and second temperature measurement module is located at the cookware The lower section of bottom wall, the bottom wall temperature for detecting the cookware.
Preferably, the cooking apparatus further includes alarm set, and the alarm set is electrically connected with the control module.
The present invention also proposes a kind of control method of cooking apparatus, and the cooking apparatus includes cookware, described for heating The heating device of cookware, the control module being electrically connected with the heating device detachable on the cookware are equipped with thermometric dress It sets, the temperature measuring equipment includes the first temperature measurement module and first communication module of electrical connection, the control method of the cooking apparatus Include the following steps：
S1, when receiving heating instructions, the control module controls the heating device and is heated to the cookware；
S2, first temperature measurement module detect the nearly bottom temperature away from bottom wall preset height position in the cookware, and pass through The nearly bottom temperature is sent to the control module by the first communication module；
S3, when the nearly bottom temperature meets preset condition, the control module controls the heater stop heating.
Preferably, the cooking apparatus further includes the dry combustion method protection module being electrically connected with the control module, the step S3 is specially：When the temperature meets preset condition, the dry combustion method protection module is by current value, temperature value, time counting value It resets, and clearing result is fed back to control module, the control module is according to clearing as a result, controlling the heater stop Heating.
Preferably, after the preset condition is liquid reaches boiling in the cookware, the nearly bottom temperature is less than Liquid boiling temperature.
Preferably, the control module obtains the primary nearly bottom temperature, the preset condition every prefixed time interval For：This described nearly bottom temperature obtained is less than the nearly bottom temperature obtained last time, and the nearly bottom temperature that last time obtains It is greater than or equal to preset first temperature threshold with the difference of the nearly bottom temperature of this acquisition.
Preferably, further include step after the step S1：
S21, while first temperature measurement module detects the nearly bottom temperature, described in second temperature measurement module detection Cooking bottom temperature at cookware bottom wall, and the cooking bottom temperature is sent to the control module.
Preferably, the control module is every prefixed time interval, obtains the primary cooking bottom temperature and primary described close Bottom temperature；The preset condition is：This described cooking bottom temperature obtained is more than the cooking bottom temperature obtained last time, and this The difference for the cooking bottom temperature that the cooking bottom temperature obtained was obtained with last time is greater than or equal to preset second temperature threshold value； Meanwhile this described nearly bottom temperature obtained is less than the nearly bottom temperature of last time acquisition, and the nearly bottom temperature that last time obtains Degree and the difference of the nearly bottom temperature of this acquisition are greater than or equal to preset first temperature threshold.
In technical scheme of the present invention, there are one can be filled with the thermometric that cookware side wall is detachably connected for setting on cooking apparatus It sets, since the temperature measuring equipment includes the first temperature measurement module and first communication module, and the first temperature measurement module can be examined directly and accurately Survey cookware in away from bottom wall closer location at, i.e., the nearly bottom temperature at preset height, so, when the liquid in cookware did not had the position When, what the first temperature measurement module detected is the temperature of liquid at this, if the liquid in cookware is less than the position, the first temperature measurement module What is detected is the temperature of air at this, in other words, when the liquid level of liquid in cookware is just below the position, the first temperature measurement module The temperature that will become testing liquid level upper air from the temperature of test liquid, i.e., will produce temperature steep drop within a short period of time Phenomenon, and these temperature can be sent to the control module of cooking apparatus by first communication module, due to the liquid in cookware at this time The surplus amount of body is seldom, i.e., cookware is in the state for closing on dry combustion method, so control module just can determine that dry combustion method will occur for cookware, in turn Control heating device is closed in time, in this manner it is possible to which to cookware, there is a situation where dry combustion methods to carry out antedating response, to effectively prevent The generation of dry combustion method phenomenon.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of temp measuring system of the present invention；
Fig. 2 is for temperature measuring equipment in Fig. 1 with cooking apparatus in the part-structure diagrammatic cross-section of assembled state；
Fig. 3 is the enlarged diagram at A in Fig. 2；
Fig. 4 is the part-structure diagrammatic cross-section of another embodiment of temperature measuring equipment of the present invention；
Fig. 5 is the high-level schematic functional block diagram of temp measuring system in Fig. 1；
Fig. 6 is the flow diagram of one embodiment of control method of cooking apparatus of the present invention.
Drawing reference numeral explanation：
Label Title Label Title
1 Electromagnetic oven 11 Heating device
111 Panel 12 Control module
13 Second temperature measurement module 2 Temperature measuring equipment
21 Mounting portion 22 First temperature measurement module
22a Shell 22b First thermistor
22c Second thermistor 22d Temperature sensor line
3 Cookware 22e Insulated heat set
14 Heating function detection module 15 Dry combustion method protection module
16 Alarm set 22f Heat Conduction Material
23 First communication module
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...), Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in the picture) between each component, Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
If in addition, relating to the description of " first ", " second " etc. in the embodiment of the present invention, it is somebody's turn to do " first ", " second " etc. Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy Sign.In addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy It is enough realize based on, when the knot that conflicting or cannot achieve when will be understood that this technical solution occurs in the combination of technical solution Conjunction is not present, also not the present invention claims protection domain within.
The present invention proposes a kind of temperature measuring equipment and the temp measuring system with the temperature measuring equipment.Wherein, temperature measuring equipment is used for Cooking apparatus, the cooking apparatus can be, but not limited to as electromagnetic oven, electric cooker, electric food warmer etc..
Referring to figs. 1 to Fig. 3 and Fig. 5, in an embodiment of the present invention, which is specially an electromagnetic oven 1, with Lower content illustrates by taking electromagnetic oven 1 as an example.The temp measuring system of the electromagnetic oven 1 includes electromagnetic oven 1 and temperature measuring equipment 2, wherein electromagnetism Stove 1 includes heating device 11 and control module 12, and heating device 11 is electrically connected with control module 12, and is placed on heating device 11 There is cookware 3.And temperature measuring equipment 2 includes then mounting portion 21, the first temperature measurement module 22 and first communication module 23, mounting portion 21 Detachably to be installed with the side wall for the cookware 3 being placed on electromagnetic oven 1；Meanwhile first temperature measurement module 22 fixed with mounting portion 21 Connection, for detecting the nearly bottom temperature away from bottom wall preset height position in cookware 3, and the temperature-sensitive point of the first temperature measurement module 22 is in lean on The 3 bottom wall setting of nearly cookware is used in addition, first communication module 23 is electrically connected with the first temperature measurement module 22 by the first temperature measurement module The nearly bottom temperature of 22 detections is sent to the control module 12 of electromagnetic oven 1.
It should be noted that, electromagnetic oven 1 is to utilize electric cooking apparatus made of electromagnetic inductive heating principle, heating dress herein It sets 11 and generally includes the components such as high-frequency induction heating coil (not shown), at the interval of the bottom wall and load coil of cookware 3 There is the panel 111 of electromagnetic oven 1.In use, heating coil is passed through alternating current, an alternating magnetic field is just generated around coil, it should Most of cookware 3 made of ferromagnetic material being positioned on panel 111 of alternating magnetic field generate big in the bottom wall of cookware 3 Amount vortex, to generate the heat needed for culinary art, i.e. electromagnetic oven 1 heats cookware 3.And in the heating process of cookware 3, The liquid level of liquid (can also be the food etc. that liquid consolidates mixed state) can constantly be reduced with continuing for heating process in cookware 3, When liquid be all evaporated and electromagnetic oven 1 still continue heating when, cookware 3 i.e. occur dry combustion method.
Compared to the scheme that temperature measuring equipment is set to 1 panel of electromagnetic oven, 111 lower section common at present, the thermometric dress of the program The barrier because of panel 111 is set, cause the test to 3 temperature of cookware inaccurate and is lagged, thus can not effective anti-dry；And at this In embodiment, by the way that a temperature measuring equipment 2 that can be detachably connected with 3 side wall of cookware is arranged, since the temperature measuring equipment 2 includes the One temperature measurement module 22 and first communication module 23, and the temperature-sensitive point of the first temperature measurement module 22 is in the 3 bottom wall setting of close cookware, therefore the One temperature measurement module 22 can directly and accurately detect the nearly bottom temperature away from (i.e. preset height position) at bottom wall closer location in cookware 3 Degree, when the liquid in cookware 3 did not had the position, what the first temperature measurement module 22 detected is the temperature of liquid at this, if in cookware 3 Liquid be less than the position when, the first temperature measurement module 22 detection be air at this temperature, in other words, when liquid in cookware 3 When the plane of equal substances is just below the position, the first temperature measurement module 22 will become testing on liquid level from the temperature of test liquid The temperature of square air, i.e., the phenomenon that will produce temperature steep drop within a short period of time, and these temperature can pass through first communication module 23 are sent to the control module 12 of electromagnetic oven 1, and since the surplus amount of liquid in cookware 3 at this time is seldom, i.e., cookware 3, which is in, closes on dry combustion method State, so control module 12 just can determine that cookware 3 and will occur dry combustion method, and then controls heating device 11 and closes in time, this Sample, so that it may with to cookware, there is a situation where dry combustion methods to carry out antedating response, to effectively prevent the generation of dry combustion method phenomenon,.Another party Face, since the first temperature measurement module 22 can directly and accurately detect the temperature of the substances such as liquid in cookware 3, therefore in the present embodiment, The temperature that electromagnetic oven 1 can also be sent according to the first temperature measurement module 22 adjusts electromagnetic oven in conjunction with the characteristics of different liquids or food 1 power, to carry out accurate thermostatic control to electromagnetic oven 1.
To further increase the accuracy of temperature detection, prevent from making because of situations such as liquid fluctuating in cookware 3 or bubble wrap up At erroneous judgement, in the present embodiment, which further includes second temperature measurement module 13.Second temperature measurement module 13 is set to The lower surface of the panel 111 of electromagnetic oven 1, the i.e. lower section of the bottom wall of cookware 3 are used for the temperature of 3 bottom wall of indirect detection cookware, when So, in other embodiment, the second temperature measurement module 13 also can directly detect the temperature of 3 bottom wall of cookware.When the liquid in cookware 3 is deposited Amount is seldom, i.e., when cookware 3 closes on dry combustion method, at this point, the temperature of 3 bottom wall of cookware will steeply rise in a short time, electromagnetic oven 1 The information for the temperature steep drop that control module 12 is sent according to the information of 3 bottom wall steep temperature excursion of cookware and the first temperature measurement module 22, Can more acurrate reliable judgement cookware 3 dry combustion method will occur, to close heating device 11 in time, protect electromagnetic oven 1 and pot Tool 3.
In addition, to make user obtain better usage experience, further, which further includes alarm set 16, should Alarm set 16 may be disposed in the shell of electromagnetic oven 1 and may also set up in its surface of shell, wherein the alarm set 16 can with but It is not limited to one or more in voice prompting device, vibrating prompt, light prompt device and screen prompt device etc., wherein sound Sound prompting device can be buzzer, or can send out the speech player etc. of voice prompt.Alarm set 16 and control mould Block 12 is electrically connected, and when the liquid level of liquid in cookware 3 is less than preset height position, related prompt will be sent out, in this way, user is just The situation of electromagnetic oven 1 and cookware 3 can be checked by the prompt, and then avoid cookware 3 that the dangerous situations such as dry combustion method occur.
In the present embodiment, as shown in Figure 1, mounting portion 21 is preferably hanging part, specifically, which is one detachable Formula is mounted on the hook of the upper edge of 3 side wall of cookware.Right the design is without being limited thereto, and in other embodiment, mounting portion 21 may be used also Thinking clamping piece (such as clip of the detachable upper edge for being mounted on 3 side wall of cookware) or shackle member etc., other can be with cookware The structure of 3 side wall detachable connections.In this way, user can be according to the actual demand of oneself, when needing to use temperature measuring equipment 2 When, so that it may temperature measuring equipment 2 is installed on 3 side wall of cookware with very convenient, and finish or do not need when use in use, Easily temperature measuring equipment 2 can be lifted down from cookware 3, to improve independence and just of the user using temperature measuring equipment 2 Profit.
Preferably, in the present embodiment, first communication module 23 is wireless blue tooth communication module, this is because wireless blue tooth is logical Believe the usual small volume of module, certainly, first communication module 23 can also be infrared module, radio-frequency module, wifi module etc. Any one of other wireless communication modules.Certainly, in other embodiments, first communication module 23 or wire communication Module.But compared to wired communication mode, the temperature that the first temperature measurement module 22 measures preferably is passed through into wireless parties in the present embodiment Formula is sent to the control module 12 (control module 12 should include a signal receiver) of electromagnetic oven 1, so that cookware 3 and electromagnetism Conducting wire is not needed between stove 1 to be communicated, and the ease of use and practicability of cookware 3 and electromagnetic oven 1 are improved.
With reference to Fig. 2 and Fig. 3, in the present embodiment, the first temperature measurement module 22 is specially a thermoprobe, and certainly, first surveys Warm module 22 can also be other temperature test devices such as melting point bar or tempilstick.The thermoprobe is extended in upward and downward, Upper end is connect with mounting portion 21, and first communication module 23 is preferably placed at the top of thermoprobe, to avoid liquid in cookware 3 etc. Influence to communication module.Specifically, thermoprobe includes acicular shell 22a and several temperature-sensitives being packaged in shell 22a Resistance, in addition, Heat Conduction Material 22f (such as, but not limited to magnesia etc.) is also filled in shell 22a, to increase thermoprobe Heat conductivity, make temperature measure it is more acurrate.Position of these thermistors where in thermoprobe is thermoprobe Temperature-sensitive point, and the two poles of the earth of thermistor are respectively connected with temperature sensor line 22d, temperature sensor line 22d stretch out shell 22a and with first Communication module 23 connects, and certainly, signal adapter etc. can be also connected between temperature sensor line 22d and first communication module 23 Component.In addition, in the present embodiment, the bottom wall of the needle point of thermoprobe preferably with cookware 3 touches, so that the temperature-sensitive point of thermoprobe Close proximity to 3 bottom wall of cookware, to which the condition adjudgement for closing on dry combustion method to cookware 3 is more accurate.
Particularly, in the present embodiment, thermistor includes a first thermistor 22b, first thermistor 22b It is arranged in close to the needle point bottom of thermoprobe, the position where first thermistor 22b is preset height position.Its In, 3 2~5mm of bottom wall of the first thermistor 22b preferred distances cookware, i.e. preset height preferably apart from 3 bottom wall 2mm of cookware~ 5mm.It is appreciated that since the first thermistor 22b is close from 3 bottom wall of cookware, therefore when the liquid level of liquid in cookware 3 is reduced to this When position where the first thermistor 22b, cookware 3 is i.e. in dry-fire condition is closed on, at this point, the first thermistor 22b can feel Know the temperature jump caused by the fluid change, and the temperature information is sent to electromagnetism by first communication module 23 The control module 12 of stove 1, control module 12 controls heating device 11 and stops heating again, to avoid 3 dry combustion method of cookware.
Herein specifically, as shown in figure 4, in another embodiment of the present invention, in the shell of thermoprobe In 22a, thermistor is equipped with multiple, and multiple thermistors are vertically to being intervally arranged, it is preferable that multiple thermistors are vertically To equidistant arrangement.In these thermistors, it is aforementioned first thermistor 22b to be located at the lowermost thermistor, other Thermistor above the first thermistor 22b is the second thermistor 22c.It is appreciated that due to multiple thermistors It is when temperature measuring point of the liquid level just below a certain thermistor, then hot at this vertically to being intervally arranged, therefore during heating The temperature of quick resistance test is the temperature for becoming to test liquid level upper air by the temperature of test liquid, to temperature steep drop occur The phenomenon that, in this way, the variation of water level in cookware 3 in heating process can be detected by the temperature change of each thermistor Situation, so as to remind user to add water in time.Certainly, this setting also has the function of dry combustion method prompting and dry combustion method protection, here, plus Water is reminded can be sent out with dry combustion method prompting by alarm set 16.In addition, according to the situation of change of water level in the cookware 3 detected, This setting can also carry out user the prompt of cooking progress and the deadline is cooked in prediction.Herein it should be noted that, this In embodiment, it is additionally provided with an insulated heat made of heat-insulating material at the needle point of thermoprobe and covers 22e, the insulated heat Set 22e can avoid touching because of the bottom wall of the needle point and cookware 3 of thermoprobe, and so that the heat of the bottom wall of cookware 3 reaches probe, The phenomenon for causing the measured temperature of the second thermistor 22c excessive occurs.
The present invention also proposes that a kind of control method of cooking apparatus, the cooking apparatus can be, but not limited to as electromagnetic oven, electricity Rice cooker, electric food warmer etc..The cooking apparatus that the control method of the cooking apparatus is based on includes cookware 3, for heating adding for cookware 3 Thermal 11 and the control module 12 being electrically connected with heating device 11, it is detachable on cookware 3 that temperature measuring equipment 2 is installed, it should Temperature measuring equipment 2 includes the first temperature measurement module 22 and first communication module 23 of electrical connection.
Referring to Fig.1, Fig. 2, Fig. 5 and Fig. 6, in an embodiment of the present invention, the cooking apparatus are specially an electromagnetic oven 1, with Lower content still illustrates by taking electromagnetic oven 1 as an example.The control method of the electromagnetic oven 1 includes the following steps：
S1, when receiving heating instructions, control module 12 control heating device 11 cookware 3 is heated；
Nearly bottom temperature away from bottom wall preset height position in S2, the first temperature measurement module 22 detection cookware, and it is logical by first The letter nearly bottom temperature of module 23 is sent to control module 12；
S3, when nearly bottom temperature meets preset condition, control module 12 control heating device 11 stop heating.
In technical scheme of the present invention, the preset condition of nearly bottom temperature may include following two situations：The first is default Condition is：After liquid reaches boiling in cookware 3, the nearly bottom temperature T of this acquisition of control module 12nLess than liquid boiling temperature T1；Second of preset condition be：Every prefixed time interval △ t, it is primary that control module 12 obtains nearly bottom temperature value, when control mould The nearly bottom temperature T of this acquisition of block 12nThe nearly bottom temperature T obtained less than last timen-1, and Tn-1With TnDifference be greater than or equal to it is pre- If the first temperature threshold △ BT, in other words, the fall off rate of the adjacent nearly bottom temperature obtained twice is calculated, when at this temperature When reduction of speed rate is more than preset fall off rate, control module 12 controls heating device 11 and stops heating.Certainly, at this point, Tn-1≤ T1.It is appreciated that the first preset condition is simple and convenient, but the accuracy judged is not so good as second of preset condition, the present embodiment In preferably use second of preset condition.
To further decrease False Rate, in the present embodiment, the second thermometric is additionally provided in 111 lower surface of panel of electromagnetic oven 1 Module 13, and second temperature measurement module 13 can be correspondingly provided with second communication module (not shown), therefore after step S1, further include Following steps：
S21, the first temperature measurement module 22 detection cookware 3 in nearly bottom temperature while, the second temperature measurement module 13 also detects Cooking bottom temperature at 3 bottom wall of cookware, and cooking bottom temperature is sent to control module 12.
Correspondingly, after increasing the second temperature measurement module 13, in step s3, the temperature preset condition Ying Jinyi that need to meet Step is optimized for：Every prefixed time interval △ t, control module 12 obtains a cooking bottom temperature and successively nearly bottom temperature；Work as control The cooking bottom temperature DT of this acquisition of molding block 12nThe cooking bottom temperature DT obtained more than last timen-1, i.e. DTn>DTn-1, and DTnWith DTn-1 Difference be greater than or equal to preset second temperature threshold value △ DT；Meanwhile Tn<Tn-1, and Tn-1With TnDifference be greater than or equal to it is pre- If the first temperature threshold △ BT.After meeting the two temperature preset conditions at the same time, control module 12 just judges that cookware 3 is in The state for closing on dry combustion method stops heating to control heating device 11.It is appreciated that since temperature preset condition need to meet simultaneously Two, therefore can effectively avoid judging by accident caused by situations such as liquid fluctuating in cookware 3 or bubble wrap up so that cookware 3 is faced The judgement of nearly dry-fire condition can be more acurrate reliable in time.
Herein it should be noted that, for the preset condition of nearly bottom temperature, be typically before cooking apparatus manufacture, according to What relevant experimental data was pre-set.Wherein, for electromagnetic oven 1, △ BT ranges are usually preferably set as 5 DEG C~20 DEG C, The range of △ DT is usually preferably set as 5 DEG C~10 DEG C, and certainly, the two ranges can also be appropriate according to the type of cooking apparatus Setting.In addition, can be also appropriately arranged with according to actual conditions for prefixed time interval △ t, △ t, for electromagnetic oven 1, △ t are usual Preferably it is 30s~60s, △ t are 30s in the present embodiment.Herein specifically, the first temperature measurement module 22 and second Temperature measurement module 13 is once per second for the test frequency of temperature, but the time interval of the acquisition temperature of control module 12 is (i.e. default Time interval △ t) it is that 30s~60s namely control module 12 are primary every 30s~60s reading temperature informations.
It is appreciated that in the present embodiment, liquid in cookware 3, example are begun to warm up when electromagnetic oven 1 receives heating instructions When such as water, the first temperature measurement module 22 can measure the water temperature T at preset height position0, while the second temperature measurement module 13 can be surveyed Obtain cooking bottom temperature DT0；Since the specific heat ratio of water is larger, water, which will absorb amount of heat, can just be such that own temperature improves, therefore work as pot When inside having water, the temperature of water slowly rises, at this point, the temperature of the first temperature measurement module 22 detection also slowly rises, when water is heated to After boiling, the temperature that the first temperature measurement module 22 measures is the boiling temperature of water, meanwhile, the temperature that the second temperature measurement module 13 measures Also constantly slowly rise；However, with the continuous explosive evaporation of water in pot, the water surface can be reduced constantly, when the water surface is just below pre- If height, i.e. when height and position where the first thermistor of the lowermost 22b of the first temperature measurement module 22, the first temperature measurement module 22 will become testing the temperature of water surface upper air from the temperature of test water, i.e., produce showing for temperature steep drop in a short time As, and the temperature value constantly declines, at this point, since water is interior also close to dry state in cookware 3, therefore the second temperature measurement module 13 detects To cooking bottom temperature also rapid increase, in this way, the control module 12 of electromagnetic oven 1 combines the two temperature informations, you can accurate judgement Dry combustion method will occur for cookware 3, stop heating immediately to control heating device 11, to protect cookware 3 not damaged by dry combustion method.When So, if heating device 11 does not stop heating, dry combustion method will directly occur for cookware 3, in the present embodiment, due to the needle of thermoprobe After the bottom wall of point and cookware 3 touches, therefore dry combustion method occurs for cookware 3, the temperature that the first temperature measurement module 22 detects can steeply rise, when The cooking bottom temperature that right second temperature measurement module 13 measures can also steeply rise, and thus easily cause to damage to cookware 3 and electromagnetic oven 1 It is bad.
In addition, in the present embodiment, to further decrease False Rate, electromagnetic oven 1 further includes being electrically connected with control module 12 Dry combustion method protection module 15, therefore further, step S3 can be specially：When temperature meets preset condition, dry combustion method protection module 15 by clearings such as current value, temperature value, time counting values, and clearing result is fed back to control module 12, control module 12 Stop heating according to resetting as a result, controlling heating device 11.
In addition, electromagnetic oven 1 further includes a heating function detection module 14 being electrically connected with control module 12, the master of the module Function is wanted to be whether detection electromagnetic oven 1 receives heating instructions, for example, the module detects " Baoshang " button or " chafing dish " etc. When by key pressing, so that it may which, to send the signal for having received heating instructions to control module 12, control module 12 is i.e. controllable to be added Thermal 11 heats cookware 3.
The foregoing is merely the preferred embodiment of the present invention, are not intended to limit the scope of the invention, every at this Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly In the scope of patent protection that other related technical areas are included in the present invention.

Claims (15)

1. a kind of temperature measuring equipment is used for cooking apparatus, which is characterized in that including：
Mounting portion, detachably to be installed with the cookware side wall being placed on the cooking apparatus；
First temperature measurement module is fixedly connected with the mounting portion, for detecting in the cookware away from bottom wall preset height position Nearly bottom temperature；And
First communication module is electrically connected with first temperature measurement module, for the nearly bottom temperature to be sent to the cooking pot Tool.
2. temperature measuring equipment as described in claim 1, which is characterized in that the mounting portion is hanging part or clamping piece, to hang It is connected to or is held on the upper edge of the cookware side wall.
3. temperature measuring equipment as described in claim 1, which is characterized in that the first communication module is wireless communication module.
4. temperature measuring equipment as described in any one of claims 1 to 3, which is characterized in that first temperature measurement module is visited for thermometric Needle, the thermoprobe are extended in upward and downward, and upper end is connect with the mounting portion, and the thermoprobe includes acicular outer Shell and several thermistors being packaged in the shell, the two poles of the earth of each thermistor are respectively connected with temperature sensor line, described Temperature sensor line stretches out the shell and is simultaneously connect with the first communication module, and several thermistors include one being located at In the cookware and the first thermistor away from preset height described in bottom wall.
5. temperature measuring equipment as claimed in claim 4, which is characterized in that the preset height is 2mm~5mm.
6. temperature measuring equipment as claimed in claim 4, which is characterized in that the thermistor is equipped with multiple, multiple temperature-sensitives It is first temperature-sensitive electricity that resistance, which is located at the lowermost thermistor vertically to being intervally arranged, and in multiple thermistors, Resistance.
7. a kind of temp measuring system, which is characterized in that including：
Cooking apparatus, including heating device and control module, the heating device are electrically connected with the control module, and it is described plus Cookware is placed in thermal；And
Temperature measuring equipment, the temperature measuring equipment be temperature measuring equipment as claimed in any one of claims 1 to 6, the temperature measuring equipment to The nearly bottom temperature measured is sent to the control module.
8. temp measuring system as claimed in claim 7, which is characterized in that the cooking apparatus further includes the second temperature measurement module, institute State the lower section that the second temperature measurement module is located at the bottom wall of the cookware, the bottom wall temperature for detecting the cookware.
9. temp measuring system as claimed in claim 7, which is characterized in that the cooking apparatus further includes alarm set, described to carry Device of waking up is electrically connected with the control module.
10. a kind of control method of cooking apparatus, which is characterized in that the cooking apparatus includes cookware, for heating the pot The heating device of tool and the control module being electrically connected with the heating device, it is detachable on the cookware that thermometric is installed Device, the temperature measuring equipment include the first temperature measurement module and first communication module of electrical connection, the controlling party of the cooking apparatus Method includes the following steps：
S1, when receiving heating instructions, the control module controls the heating device and is heated to the cookware；
S2, first temperature measurement module detect the nearly bottom temperature away from bottom wall preset height position in the cookware, and by described The nearly bottom temperature is sent to the control module by first communication module；
S3, when the nearly bottom temperature meets preset condition, the control module controls the heater stop heating.
11. the control method of cooking apparatus as claimed in claim 10, which is characterized in that the cooking apparatus further includes and institute The dry combustion method protection module of control module electrical connection is stated, the step S3 is specially：It is described when the temperature meets preset condition Current value, temperature value, time counting value are reset, and clearing result are fed back to control module, the control by dry combustion method protection module Molding root tuber is heated according to clearing as a result, controlling the heater stop.
12. the control method of cooking apparatus as claimed in claim 11, which is characterized in that the preset condition is in the pot After liquid reaches boiling in tool, the nearly bottom temperature is less than liquid boiling temperature.
13. the control method of cooking apparatus as claimed in claim 11, which is characterized in that the control module is when default Between be spaced, obtain the primary nearly bottom temperature, the preset condition is：This described nearly bottom temperature obtained was obtained less than last time The nearly bottom temperature, and the difference of the nearly bottom temperature that the nearly bottom temperature that obtains of last time is obtained with this is more than or waits In preset first temperature threshold.
14. the control method of cooking apparatus as claimed in claim 11, which is characterized in that after the step S1, also wrap Include step：
S21, while first temperature measurement module detects the nearly bottom temperature, second temperature measurement module detects the cookware Cooking bottom temperature at bottom wall, and the cooking bottom temperature is sent to the control module.
15. the control method of cooking apparatus as claimed in claim 14, which is characterized in that the control module is when default Between be spaced, obtain the primary cooking bottom temperature and the primary nearly bottom temperature；
The preset condition is：This described cooking bottom temperature obtained is more than the cooking bottom temperature obtained last time, and this is obtained The difference for the cooking bottom temperature that the cooking bottom temperature taken was obtained with last time is greater than or equal to preset second temperature threshold value；
Meanwhile this described nearly bottom temperature obtained is less than the nearly bottom temperature of last time acquisition, and last time acquisition is described close Bottom temperature and the difference of the nearly bottom temperature of this acquisition are greater than or equal to preset first temperature threshold.
CN201710248153.1A 2017-04-14 2017-04-14 The control method of temperature measuring equipment, temp measuring system and cooking apparatus Pending CN108720627A (en)

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