CN209436907U - A kind of thermometric accurately intelligent cookware - Google Patents
A kind of thermometric accurately intelligent cookware Download PDFInfo
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- CN209436907U CN209436907U CN201821890743.0U CN201821890743U CN209436907U CN 209436907 U CN209436907 U CN 209436907U CN 201821890743 U CN201821890743 U CN 201821890743U CN 209436907 U CN209436907 U CN 209436907U
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- temperature
- thermocouple
- pot body
- circuit board
- thermometric
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Abstract
The utility model provides a kind of thermometric accurately intelligent cookware, including pot body, the handle being connected with pot body, and the temperature measuring equipment of the detection temperature of boiler, the temperature measuring equipment includes thermocouple and circuit board, the circuit board is arranged in the handle, wherein, the thermocouple includes measurement end and reference end, the measurement end of the thermocouple is arranged in the pot body, the reference end of the thermocouple is connected on the circuit board, the circuit board is equipped with reference junction temperature detection circuit, and the controller being connected with the reference junction temperature detection circuit, the controller carries out AD sampling to reference junction temperature detection circuit to obtain AD value, the controller corresponds to table according to the AD value and reference junction temperature that set in it, with the temperature of the determination reference end.
Description
Technical field
The utility model relates to kitchen appliance technical field more particularly to a kind of thermometric accurately intelligent cookwares.
Background technique
With the increasingly raising of people's living standard, requirement of the people to cooking pot tool is also higher and higher, therefore Intelligent pan
Tool, temperature display cookware (cookware that can show cookware temperature) etc. come into being.
Measure temperature sensor it is very much, based on working principle it is different.In numerous temperature sensors
In, thermocouple is the temperature sensor that a kind of temperature-measuring range is wide, at low cost, and the working principle of thermocouple is: by two kinds of differences at
Conductor (referred to as thermocouple wire or thermode) both ends of part are bonded into circuit, when the temperature difference at two junctions, in circuit
Electromotive force will be generated, this phenomenon is known as pyroelectric effect, and this electromotive force is known as thermoelectrical potential.Thermocouple is exactly using this
Principle carries out temperature measurement, wherein the one end for being directly used as measuring medium temperature is called hot end (working end), and the other end is called
Cold end (reference end).
When measuring temperature using the measurement end of thermocouple, if reference junction temperature is 0 degree, thermoelectrical potential is measurement end temperature
Monotropic function can directly calculate measurement end temperature according to the numerical value of thermoelectrical potential.But if thermocouple is used for cooking pot
In tool, due to the limitation of the structure size of cooking pot tool, reference end and measurement end are closer, and reference junction temperature can cook
Changing in journey causes thermometric inaccurate.Therefore, how thermocouple is used for cooking pot tool and obtains accurate measured temperature
It is problem to be solved.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of intelligent cookwares, can be improved the survey in cooking process
Warm accuracy.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of thermometric accurately intelligent cookware, including pot body, the handle being connected with pot body, and detects the temperature of boiler
Temperature measuring equipment, the temperature measuring equipment includes thermocouple and circuit board, and the circuit board is arranged in the handle, wherein institute
Stating thermocouple includes measurement end and reference end, and the measurement end of the thermocouple is arranged in the pot body, the ginseng of the thermocouple
End is examined to be connected on the circuit board, the circuit board be equipped with reference junction temperature detection circuit, and with the reference end temperature
The connected controller of detection circuit is spent, the controller carries out AD sampling to reference junction temperature detection circuit to obtain AD value, institute
It states controller and table is corresponded to according to the AD value and reference junction temperature that set in it, with the temperature of the determination reference end.
Further, be additionally provided with temperature signal amplifying circuit on the circuit board, the temperature signal amplifying circuit it is defeated
Enter the measurement end that end connects the thermocouple, the output end of temperature signal amplifying circuit connects the controller, the controller
The thermocouple indexing table set according to the temperature of reference end and in it, with the temperature of the determination pot body.
Further, the reference junction temperature detection circuit includes the divider resistance R4 and thermistor RT1 being arranged in series,
The output end of the reference junction temperature detection circuit be set to the divider resistance R4 and thermistor RT1 junction, to
The controller exports AD value.
Further, the reference junction temperature detection circuit further includes capacitor C6, and the first end of the divider resistance R4 connects
Supply voltage VCC is met, second end connects the first end of thermistor RT1, and the second end ground connection of the thermistor RT1 is described
The both ends of capacitor C6 are in parallel with the both ends of the thermistor RT1.
Further, the temperature signal amplifying circuit includes: operational amplifier, resistance R11, R12, the resistance R11
One end be connected with the thermocouple, the other end is connected with the reverse input end of the operational amplifier, the operational amplifier
Positive input ground connection, the output end of the operational amplifier is connected to the controller, the both ends connection of the resistance R12
Between the reverse input end and output end of the operational amplifier.
Further, the temperature signal amplifying circuit further includes resistance R13, R14, capacitor C12, the operational amplifier
Positive input be grounded by resistance R13, the output end of the operational amplifier is connected to the control by resistance R14
One end of device, the capacitor C12 is connected with resistance R14, other end ground connection.
Further, the pot body has mounting groove, and the measurement end of the thermocouple is connected to the circuit by conducting wire
Plate, the intelligence cookware further include the bracket to the fixation conducting wire, and the bracket is inserted in the mounting groove, and bracket
One end of close circuit board expose to the mounting groove.
Further, it is additionally provided with display part on the circuit board, to show the temperature of the pot body.
Further, wireless transport module is additionally provided on the circuit board, the wireless transport module is to send
It states the temperature data information of pot body or power control instruction is sent according to the temperature of the pot body.
Further, the pot body has bottom wall and side wall, and the measurement end of the thermocouple and the side wall of the pot body connect
Touching, and it is located at the 1/2 or less of the Sidewall Height.
Compared with the relevant technologies, cookware provided by the embodiment of the utility model is passed through using thermocouple measurement temperature of boiler
The temperature of thermistor real-time monitoring thermocouple reference end, controller is in computation of table lookup thermocouple measurement end temperature, due to ginseng
It is known for examining end temperature, so operation can be compensated in conjunction with reference junction temperature in computation of table lookup measurement end temperature, from
And more accurate thermocouple measurement end temperature is obtained, improve the thermometric accuracy of cooking pot tool during the cooking process.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the module diagram of temperature measurement circuit in an embodiment of the present invention.
Fig. 2 is the circuit diagram of temperature measurement circuit in an embodiment of the present invention.
Fig. 3 is the internal module schematic diagram of controller in an embodiment of the present invention.
Fig. 4 is the structure chart of intelligent cookware in an embodiment of the present invention.
Appended drawing reference:
10- thermocouple；20- temperature signal amplifying circuit；30- reference junction temperature detection circuit；40- controller；1- pot body；
401 first computing units；402 second computing units；403 third computing units；404 the 4th computing units；405 the 5th calculate list
Member；1- pot body；2- handle；21- tail-hood；31- conducting wire；32- bracket；4- circuit board；41- display part；5- battery；51- battery cover.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with attached drawing to this
The embodiment of utility model is described in detail.It should be noted that in the absence of conflict, embodiment in the application and
Feature in embodiment can mutual any combination.
" first ", " second " used in present specification and claims and similar word are not offered as
Any sequence, quantity or importance, and be used only to distinguish different component parts." connection " or " connected " etc. are similar
Word is not limited to physics or mechanical connection, but may include electrical connection, it is either direct or between
It connects.
Embodiment 1
Please emphasis refering to fig. 1, and combine Fig. 4, one of the present embodiment thermometric accurately intelligent cookware, including pot body 1,
The handle 2 being connected with pot body 1, and the temperature measuring equipment of detection 1 temperature of pot body, the temperature measuring equipment includes 10 He of thermocouple
Circuit board 4, the circuit board 4 are arranged in the handle 2, and the thermocouple 10 includes measurement end and reference end, the thermoelectricity
Even 10 measurement end is arranged in the pot body 1, and the reference end of the thermocouple 10 is connected on the circuit board 4, the electricity
Road plate 4 is equipped with reference junction temperature detection circuit 30, and the controller 40 being connected with the reference junction temperature detection circuit 30,
The controller 40 carries out AD sampling to reference junction temperature detection circuit 30 to obtain AD value, and the controller 40 is set according in it
AD value and reference junction temperature correspond to table, with the temperature of the determination reference end.
Further, temperature signal amplifying circuit 20, the temperature signal amplifying circuit 20 are additionally provided on the circuit board 1
Input terminal connect the measurement end of the thermocouple 10, the output end of temperature signal amplifying circuit 20 connects the controller 40,
The thermocouple indexing table that the controller 40 is set according to the temperature of reference end and in it, with the temperature of the determination pot body 1.
Compared with the relevant technologies, cookware provided by the embodiment of the utility model using thermocouple measurement temperature of boiler, and leads to
It crosses and real-time monitoring is carried out to the temperature of reference end, controller is in computation of table lookup thermocouple measurement end temperature, due to reference end temperature
Degree is known, so operation can be compensated in conjunction with reference junction temperature in computation of table lookup measurement end temperature, to obtain
More accurate thermocouple measurement end temperature, improves the thermometric accuracy of cooking pot tool during the cooking process.
Referring to Fig. 2, it is the specific circuit diagram that the present embodiment provides.Specifically, the reference junction temperature detection
Circuit 30 includes the divider resistance R4 and thermistor RT1 being arranged in series, the output end of the reference junction temperature detection circuit 30
Set on the junction of the divider resistance R4 and thermistor RT1, the controller 40 carries out AD sampling to the output end to obtain
Take AD value.The reference junction temperature detection circuit 30 further includes capacitor C6, the first end connection power supply electricity of the divider resistance R4
VCC, 5V as shown in the figure are pressed, second end connects the first end of thermistor RT1, the second termination of the thermistor RT1
Ground, the both ends of the capacitor C6 are in parallel with the both ends of the thermistor RT1.
Please continue to refer to Fig. 2, the temperature signal amplifying circuit 20 includes: operational amplifier, resistance R11, R12, described
One end of resistance R11 is connected with the thermocouple 10, and the other end is connected with the reverse input end of the operational amplifier, the fortune
The positive input ground connection of amplifier is calculated, the output end of the operational amplifier is connected to the controller 40, the resistance R12
Both ends be connected between the reverse input end and output end of the operational amplifier.The temperature signal amplifying circuit 20 also wraps
Resistance R13 is included, the positive input of R14, capacitor C12, the operational amplifier are grounded by resistance R13, the operation amplifier
The output end of device is connected to the controller 40 by resistance R14, and one end of the capacitor C12 is connected with resistance R14, the other end
Ground connection.Wherein thermocouple 10 and operational amplifier SGM8552 composition thermocouple amplifier circuit, amplification factor R12/R11,
R14 and C12 composition filter circuit increases AD and samples stability.
Referring to Fig. 3, in one embodiment, the controller 40 includes the first computing unit 401, second calculates list
Member 402, third computing unit 403, the 4th computing unit 404 and the 5th computing unit 405.
First computing unit 401, the tertiary voltage signal for being exported according to reference junction temperature detection circuit 30 are looked into
The first preset table is ask, reference junction temperature is obtained；Wherein, tertiary voltage signal and reference junction temperature are recorded in first preset table
Corresponding relationship；Second computing unit 402, for using the reference junction temperature as target measurement end temperature, inquiry heat
Galvanic couple temperature phasing meter obtains the first thermoelectrical potential；Wherein, when record reference junction temperature is 0 degree in the electric thermo-couple temperature phasing meter
Thermoelectrical potential and measurement end temperature corresponding relationship；The third computing unit 403, for amplifying electricity according to the temperature signal
The amplification factor of second voltage signal and the temperature signal amplifying circuit 20 that road 20 exports calculates the Thermocouple module 10
The first voltage signal of reality output；4th computing unit 404, for by the numerical value of first thermoelectrical potential and described
The numerical value of one voltage signal is added, and compensated thermoelectrical potential is obtained；5th computing unit 405, for according to compensation
Thermoelectrical potential inquiry electric thermo-couple temperature phasing meter afterwards obtains final measurement end temperature.
It, can be according to the change of reference junction temperature using 40 computation of table lookup measurement end temperature of controller in above embodiment
The variation for changing Compensative thermoelectric couple thermoelectrical potential, tables look-up further according to compensated thermoelectrical potential and obtains accurate measurement end temperature value.
Embodiment 2
As shown in figure 4, a kind of intelligent cookware provided by the embodiment of the utility model, by taking frying pan as an example, including pot body 1, with
The connected handle 2 of pot body 1, and the temperature measuring equipment of detection 1 temperature of pot body, the temperature measuring equipment includes thermocouple 10 and electricity
Road plate 4, the circuit board 4 are arranged in the handle 2.The structure of thermocouple 10 and the circuit structure on circuit board 4 can join
Setting in embodiment 1, details are not described herein again.Further, the pot body 1 have mounting groove, the mounting groove in pot body,
Lower position after the corresponding installation of handle 2, the measurement end of the thermocouple is connected to the circuit board 4 by conducting wire 31, described
Intelligent cookware further includes the bracket 32 to the fixation conducting wire 31, and the bracket 32 is inserted in the mounting groove, and bracket
One end of 32 close circuit board 4 exposes to the mounting groove, to facilitate the installation, disassembly and fixation of bracket.
The handle 2 has installation cavity, and the circuit board 4 is mounted in the installation cavity of the handle 2.In the handle 2
It is additionally provided with battery 5 and battery cover 51, battery 5 to circuit board 4 to power.The battery 5 can be general dry battery, can also
To be button cell, rechargeable battery can also be.The handle rear end is additionally provided with tail-hood 21.
Further, it is additionally provided with display part 41 on the circuit board 4, to show the temperature of the pot body 1.The electricity
It is additionally provided on road plate 4 wireless transport module (not shown), temperature number of the wireless transport module to send the pot body 1
It is believed that ceasing or sending power control instruction according to the temperature of the pot body.For example, the intelligence cookware and paired intelligence
Energy kitchen range are used cooperatively, and wireless receiving module is equipped in the intelligent stove, and the wireless transport module in the intelligence cookware is used
To send the temperature data information of the pot body 1 to intelligent stove, intelligent stove learns the current temperature of pot body, can accordingly into
The adjusting of trip temperature is automatically controlled with realizing, is promoted intelligent；Either, intelligent cookware is direct according to the temperature of the pot body
Power control instruction control intelligent stove is sent by controller and carries out power regulation.The intelligent stove can be electromagnetic oven, electricity
Pottery furnace etc..
In the present embodiment, the pot body 1 has bottom wall and side wall, the side of the measurement end of the thermocouple and the pot body
Wall contact, and it is located at the 1/2 or less of the Sidewall Height.Because the Temperature Distribution of pot body is that lower section temperature is high, more up temperature is more
Low, this programme is by the way that the measurement end of thermocouple to be arranged by the lower section of proximal wall, so that detection temperature is more acurrate, timely.
It should be noted that the present utility model application can also have other various embodiments, without departing substantially from the application spirit and
In the case where its essence, those skilled in the art can make various corresponding changes and modifications, but these phases according to the application
The change and modification answered all should belong to the protection scope of the application the attached claims.
Claims (10)
1. a kind of thermometric accurately intelligent cookware, including pot body, the handle being connected with pot body, and detects the temperature of boiler
Temperature measuring equipment, the temperature measuring equipment include thermocouple and circuit board, and the circuit board is arranged in the handle, and feature exists
In the thermocouple includes measurement end and reference end, and the measurement end of the thermocouple is arranged in the pot body, the thermocouple
Reference end be connected on the circuit board, the circuit board be equipped with reference junction temperature detection circuit, and with the reference
The controller for holding temperature sensing circuit connected, the controller carry out AD sampling to reference junction temperature detection circuit to obtain AD
Value, the controller corresponds to table according to the AD value and reference junction temperature that set in it, with the temperature of the determination reference end.
2. thermometric as described in claim 1 accurately intelligent cookware, which is characterized in that be additionally provided with temperature letter on the circuit board
Number amplifying circuit, the input terminal of the temperature signal amplifying circuit connect the measurement end of the thermocouple, temperature signal amplification electricity
The output end connection controller on road, the thermocouple indexing table that the controller is set according to the temperature of reference end and in it,
With the temperature of the determination pot body.
3. thermometric as described in claim 1 accurately intelligent cookware, which is characterized in that the reference junction temperature detection circuit packet
The divider resistance R4 being arranged in series and thermistor RT1 are included, the output end of the reference junction temperature detection circuit is set to described point
The junction of piezoresistance R4 and thermistor RT1, to export AD value to the controller.
4. thermometric as claimed in claim 3 accurately intelligent cookware, which is characterized in that the reference junction temperature detection circuit is also
Including capacitor C6, the first end of the divider resistance R4 connects supply voltage VCC, and second end connects the first of thermistor RT1
End, the second end ground connection of the thermistor RT1, the both ends of the capacitor C6 are in parallel with the both ends of the thermistor RT1.
5. thermometric as claimed in claim 2 accurately intelligent cookware, which is characterized in that the temperature signal amplifying circuit packet
Include: operational amplifier, resistance R11, R12, one end of the resistance R11 are connected with the thermocouple, the other end and the operation
The reverse input end of amplifier is connected, the positive input ground connection of the operational amplifier, the output end of the operational amplifier
Be connected to the controller, the both ends of the resistance R12 be connected to the operational amplifier reverse input end and output end it
Between.
6. thermometric as claimed in claim 5 accurately intelligent cookware, which is characterized in that the temperature signal amplifying circuit also wraps
Resistance R13 is included, the positive input of R14, capacitor C12, the operational amplifier are grounded by resistance R13, the operation amplifier
The output end of device is connected to the controller by resistance R14, and one end of the capacitor C12 is connected with resistance R14, another termination
Ground.
7. thermometric as described in any in claim 1 to 6 accurately intelligent cookware, which is characterized in that the pot body has peace
The measurement end of tankage, the thermocouple is connected to the circuit board by conducting wire, and the intelligence cookware further includes to fixed institute
The bracket of conducting wire is stated, the bracket is inserted in the mounting groove, and one end of the close circuit board of bracket exposes to the peace
Tankage.
8. thermometric as described in any in claim 1 to 6 accurately intelligent cookware, which is characterized in that on the circuit board also
It is provided with display part, to show the temperature of the pot body.
9. thermometric as described in any in claim 1 to 6 accurately intelligent cookware, which is characterized in that on the circuit board also
It is provided with wireless transport module, the wireless transport module is to send the temperature data information of the pot body or according to described
The temperature of pot body sends power control instruction.
10. thermometric as described in any in claim 1 to 6 accurately intelligent cookware, which is characterized in that the pot body has bottom
Wall and side wall, the measurement end of the thermocouple are contacted with the side wall of the pot body, and are located at the 1/2 or less of the Sidewall Height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821890743.0U CN209436907U (en) | 2018-11-16 | 2018-11-16 | A kind of thermometric accurately intelligent cookware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821890743.0U CN209436907U (en) | 2018-11-16 | 2018-11-16 | A kind of thermometric accurately intelligent cookware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209436907U true CN209436907U (en) | 2019-09-27 |
Family
ID=68011700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821890743.0U Active CN209436907U (en) | 2018-11-16 | 2018-11-16 | A kind of thermometric accurately intelligent cookware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209436907U (en) |
-
2018
- 2018-11-16 CN CN201821890743.0U patent/CN209436907U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230526 Address after: Building 2, No. 52, 22nd Street, Baiyang Street, Qiantang New District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Jiuchuang Home Appliances Co.,Ltd. Address before: No. 999, Mei Li Road, Huaiyin District, Ji'nan, Shandong Patentee before: JOYOUNG Co.,Ltd. |
|
| TR01 | Transfer of patent right |