CN108966372A - The temprature control method of electric pad - Google Patents
The temprature control method of electric pad Download PDFInfo
- Publication number
- CN108966372A CN108966372A CN201810923787.7A CN201810923787A CN108966372A CN 108966372 A CN108966372 A CN 108966372A CN 201810923787 A CN201810923787 A CN 201810923787A CN 108966372 A CN108966372 A CN 108966372A
- Authority
- CN
- China
- Prior art keywords
- electric pad
- temperature
- duty ratio
- pulse signal
- value
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/0252—Domestic applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
Abstract
The present invention relates to a kind of temprature control methods of electric pad, belong to electric heating control technology field.This method is: 1) setting constant temperature angle value and a set time；2) real time temperature of electric pad is measured and compared with constant temperature angle value；3) it when real time temperature is less than constant temperature angle value, first carries out continuing the power-up set time with 100% the first duty cycle pulse signal control electric pad；4) when clamped between at the end of, then with less than 100% the second duty cycle pulse signal control electric pad carry out energised in pulses；5) when real time temperature is more than or equal to constant temperature angle value, control electric pad stops power-up；6) when the measurement of the real time temperature of electric pad and/or Temperature protection fail, energised in pulses is carried out with the second duty cycle pulse signal control electric pad.Even if the temperature sensor and Thermal Cutoffs using the existing electric pad of this method fail, the temperature that also can control electric pad maintains safe maximum temperature and is no more than always；To thoroughly guarantee that electric pad does not catch fire.
Description
Technical field
The present invention relates to a kind of electric blanket or the temprature control methods of electric pad, belong to electric heating control technology field.
Background technique
The pad or blanket of electric heating or physical therapy have generally used in people's daily life.This electricity heating bed one
As be all constant-temperature temperature-control type, control constant temperature angle value be set between 25 DEG C ~ 50 DEG C.Using being mounted in this temperature range
For temperature sensor in pad or blanket to heating temperature real-time sampling, sampled value is compared with the temperature value of setting realizes temperature certainly
It is dynamic to adjust, to reach constant temperature purpose.This temperature control is the mode being commonly used, and one is generally installed in pad or blanket
Point sampling NTC temperature sensor and a disposable warm Thermal Cutoffs of limit.Once disposable Thermal Cutoffs fails for NTC
Limiting temperature is no more than defined ceiling temperature value, to play the role of protected by temperature limitation.However a disposable Thermal Cutoffs is only
The temperature to a point can be adopted, cannot reflect the temperature of entire cushion, therefore reliability is had a greatly reduced quality, if installed in cushion
The certain reliability of disposable Thermal Cutoffs much put increases, but the high and internal cabling of cost of manufacture becomes complicated,
It is implemented in technique relatively difficult.When NTC temperature sensor and/or disposable Thermal Cutoffs fail or are not provided with,
Electric pad or blanket, which necessarily will cause, to catch fire.
Summary of the invention
The technical problem to be solved by the present invention is to, in the failure of the temperature sensor and fuse of existing electric pad or blanket,
Ensure electric pad or blanket using when do not catch fire.
In order to solve the above technical problems, technical solution proposed by the present invention is: a kind of temprature control method of electric pad, packet
Include following steps:
1) constant temperature angle value and a set time are set；
2) real time temperature of the electric pad is measured and compared with the constant temperature angle value；
3) when the real time temperature is less than the constant temperature angle value, first described in the first duty cycle pulse signal control with 100%
Electric pad carries out continuing the power-up set time；
4) at the end of the set time, then the electric pad is controlled with the second duty cycle pulse signal less than 100% and is carried out
Energised in pulses；
5) it when the real time temperature is more than or equal to the constant temperature angle value, controls the electric pad and stops power-up；
6) when the measurement of the real time temperature of the electric pad and/or Temperature protection fail, with second duty cycle pulse signal
It controls the electric pad and carries out energised in pulses.
Further, second duty ratio is by carrying out pulse to the electric pad with the pulse signal of a variety of duty ratios
The electric pad that power-up obtains reaches the duty ratio of corresponding pulse signal when safe maximum temperature value, the safe highest temperature
Angle value is selected according to artificial experience.
Above-mentioned second duty ratio is to obtain and defaulted in the control device of the electric pad according to following experimental procedure:
1) existing electric pad is made to measure the disabler or dismounting of itself real time temperature and Temperature protection power-off；
2) it is controlled with the pulse signal of a variety of different duties and carries out energised in pulses to the existing electric pad；
3) the existing electric pad is measured to generate heat after the energised in pulses multiple temperature values achieved；
4) maximum temperature value in the multiple temperature value is found out, empirically judge and filters out safe maximum temperature value；
5) pulse signal for finding out the corresponding safe maximum temperature value obtains described in the duty ratio conduct of the pulse signal
Second duty ratio.
The beneficial effect of the present invention by adopting the above technical scheme is: due in the existing thermostatic control (reality of measurement electric pad
Inner loop control of the Shi Wendu compared with the constant temperature angle value of setting) on the basis of, believed by the second duty cycle pulse less than 100%
Number the energised in pulses with particular duty cycle is carried out to electric pad, which is to be obtained beforehand through electric pad
The duty ratio (i.e. the second duty ratio) of pulse signal when reaching safer maximum temperature under energised in pulses；Therefore make electricity
Heat pad is being generated heat according to the linear power-up of existing steady temperature control (i.e. with the control electric pad progress of the first duty cycle pulse signal
Persistently it is powered on a set time) other than, and increase according to the discontinuity arteries and veins under the control of adjustable particular duty cycle pulse signal
The fever (a kind of outer loop control) that punching power-up is formed, accordingly even when the temperature sensor of existing electric pad and Thermal Cutoffs lose
Effect, also can control electric pad temperature rise to a safer maximum temperature after maintain the maximum temperature always always
No more than (whether the maximum temperature rule of thumb can artificially determine safely)；To thoroughly guarantee that electric pad will not be because of picture
Existing electric pad only has temperature under linear continuous is powered on like that and rises too high and formed and caught fire.
The present invention is especially unique to be, for using for the electric pad with the power-up of adjustable duty cycle pulse, this hair
Bright inventor find off the beaten trackly and by experiment confirm the pulse currents of certain range duty ratios to electric pad (or
Blanket) in power supply the maximum temperature that reaches of electric pad be fully achieve a safer temperature (whether safety can root
According to artificial empirically determined safety standard), such and heater strip pulse power supply is found to screen in advance by the method for experiment
Reach the relationship between the duty ratio of the letter of pulse corresponding to safer maximum temperature.Explanation for this relationship is: because
To have heating also to have heat dissipation when electric pad power-up, when heating is equal to heat dissipation, temperature will be balanced safer most at some
On high-temperature point；Even this balance maximum temperature in the case where no constant temperature feedback closed loop is controlled there is also and maintain
?；For the energised in pulses of different duty, no matter be powered on how long, electric pad always reach one balance a certain
On a safer maximum temperature point, therefore it can select that for corresponding to these safer maximum temperatures by experiment
The duty ratio of a little pulse signals, and energised in pulses is carried out to electric pad to control with the pulse signal of this duty ratio.
It is based on discovery unique in this way, inventor furthers investigate and passes through and obtains for many years using summary and repetition test
The method for having obtained aforementioned present invention.Even if it can be said that using the constant temperature control and insurance of the existing electric pad of method of the invention
The entirely ineffective safety that can also guarantee completely in electric pad use, successfully solve existing electric pad makes because of various reasons
In the case that temperature sensor and disposable Thermal Cutoffs fail temperature increase it is out of control and the problem of catch fire.For existing electric heating
It pads for (or blanket), changes not less than for the technology of an essence.
Above-mentioned technical proposal improve first is that, the range of second duty ratio is 20%-60%, the safe maximum temperature
The range of value is 40-80 DEG C, and the corresponding relationship selection of second duty ratio and the safe maximum temperature value is: when the peace
Second duty ratio described in when full maximum temperature value is 40 DEG C is selected as 20%, when the safe maximum temperature value is 44 DEG C described in
Second duty ratio is selected as 25%, when the safe maximum temperature value is 55 DEG C described in the second duty ratio be selected as 50%, work as institute
Second duty ratio described in stating when safe maximum temperature value is 80 DEG C is selected as 60%.
Above-mentioned technical proposal improve second is that, the range of the constant temperature angle value is 25-50 DEG C, the model of the set time
Enclose is 60-600 seconds.
Above-mentioned technical proposal improve third is that, also include the steps set environment temperature limit and to measure environment real-time
Temperature controls the electric pad and stops power-up when the environment real time temperature is more than or equal to the environment temperature limit value.
Above-mentioned technical proposal improve fourth is that, the electric pad also contains negative potential signal.
Detailed description of the invention
The temprature control method of electric pad of the invention is described further with reference to the accompanying drawing.
Fig. 1 is the circuit diagram of control device used by one control method of embodiment；
Fig. 2 is the circuit diagram of control device used by embodiment two control method.
Specific embodiment
Embodiment one
Control device used by the temprature control method of the present embodiment electric pad is shown in Figure 1, including in electric pad
The power supply of heater wire (or silk) power supply, electric pad have disposable temperature fuse wire F5.Power supply is accessed by alternating current 220V to be controlled
It is formed through Transformer Rectifier for electricity output after device processed.For measuring the first temperature sensor Res of electric pad real time temperature
Thermal-1 and the first temperature control processor MCU1 is equipped with the electricity of the first electronic switch BTA08-1 and second between power supply and heater wire
Sub switch BTA08-2, formation and door between the first electronic switch BTA08-1 and the second electronic switch BTA08-2.It further include second
Temperature control processor MCU2 and keyboard decoding device cross DECODER KEYBOARD.The input terminal of first electronic switch BTA08-1 is logical
Optocoupler TRIAC1 is crossed to connect with the output end (pin HEATER) of the first temperature control processor MCU1.Second electronic switch BTA08-2
Input terminal connect with the output end (pin PA5) of the second temperature control processor MCU2 by optocoupler TRIAC2.First electronic switch
Output end J1, J2 of BTA08-1 and the second electronic switch BTA08-2 access rectifier DL1, rectifier Bridge1/RS507's
Output end connects heater wire RT1/RT2.Electric pad has temperature fuse wire F5.It is used for by DECODER KEYBOARD
(constant temperature angle value can certainly be solidificated in MCU1 in advance to the first temperature control processor MCU1 input constant temperature angle value in use
It is interior).Solidification sets a certain range of duty ratio setting value and set time etc. in advance in second temperature control processor MCU2.This reality
The constant temperature angle value range selection for applying example is 25-50 DEG C, and set time range is selected as 60-600 seconds, constant temperature angle value and fixation
The range of time can be obtained empirically or experimentally.
The temprature control method of the present embodiment electric pad the following steps are included:
1) constant temperature angle value (such as 50 DEG C) and a set time (such as 100 seconds) are set；
2) real time temperature of electric pad is measured and compared with constant temperature angle value；
3) when real time temperature be less than 50 DEG C of constant temperature angle value when, first with 100% the first duty cycle pulse signal control electric pad into
Row is persistently powered on the set time；
4) at the end of 100 seconds set times, then with the second duty cycle pulse signal control electric heating less than 100%
Pad carries out energised in pulses；
5) it when the real time temperature is more than or equal to 50 DEG C of the constant temperature angle value, controls the electric pad and stops power-up；
6) when the measurement of the real time temperature of the electric pad and/or Temperature protection fail, with second duty cycle pulse signal
It controls the electric pad and carries out energised in pulses.
Above-mentioned the 3) step be specifically: starting up, when the electric pad of the first temperature sensor Res Thermal-1 measurement
When real time temperature is less than 50 DEG C of constant temperature angle value of setting, the port HEATER output low level letter of the first temperature control processor MCU1
Number, the first electronic switch BTA08-1 conducting, the input terminal PA2 of the second temperature control processor MCU2 receives HEATER output at this time
Low level simultaneously first exports 100% the first duty ratio (i.e. full duty ratio) low level pulse signals from port PA5 and makes the second electronic switch
BTA08-2 is simultaneously turned on, and power supply is by the first electronic switch BTA08-1 and the second electronic switch BTA08-2 of conducting to heating
Line RT1/RT2 is persistently powered on a set time.
Above-mentioned the 4) step be specifically: at the end of between when clamped, the port PA5 output of the second temperature control processor MCU2 is small
The second electronic switch BTA08-2 is set to be in the shape of alternate conduction and shutdown in the low level pulse signal of the 100% the second duty ratios
State, the second electronic switch BTA08-2 that power supply passes through the first electronic switch BTA08-1 and pulse the discontinuity conducting of conducting at this time
Energised in pulses is implemented to heater wire RT1/RT2.
Above-mentioned the 5) step be specifically: when the electric pad real time temperature of the first temperature sensor Res Thermal-1 measurement
When more than or equal to 50 DEG C of constant temperature angle value of setting, the port HEATER of the first temperature control processor MCU1 exports high level signal,
First electronic switch BTA08-1 shutdown, output end J2 disconnect and enter the access of rectifier DL1), power supply stops to heater wire
RT1/RT2 power-up, but at this time the port PA5 of the second temperature control processor MCU2 still export it is low less than the 100% the second duty ratios
Level pulse signal makes the second electronic switch BTA08-2 be in turn-on and turn-off state repeatedly.
Above-mentioned 6) step be specifically: as the first temperature sensor Res Thermal-1 or/and temperature fuse wire F5
When failing and leading to the first electronic switch BTA08-1 normal open, power supply passes through the first electronic switch BTA08-1 and arteries and veins of normal open at this time
The the second electronic switch BTA08-2 for rushing discontinuity conducting implements energised in pulses to heater wire RT1/RT2.
The second duty ratio in the present embodiment be by with the pulse signal of a variety of duty ratios to the heater wire in electric pad
The duty ratio of corresponding pulse signal when electric pad reaches maximum temperature of energised in pulses acquisition is carried out, and defaults in the second temperature
It controls in processor MCU2；The general safe maximum temperature value is selected according to artificial experience.Second duty ratio is walked by following experiment
It is rapid to obtain:
1) (i.e. dismounting is used for for the disabler or dismounting for so that existing electric pad is measured itself real time temperature and Temperature protection power-off
The device of real time temperature measurement and Temperature protection)；
2) a variety of energised in pulses are imposed to the heater wire with a variety of different duty pulse signals；
3) heater wire for measuring the existing electric pad generates heat multiple temperature values achieved after a variety of energised in pulses；
4) it screens the multiple temperature value and finds out safe maximum temperature value therein；
5) it finds out the duty ratio (as the second duty ratio) of the pulse signal of the corresponding safe maximum temperature value and defaults in described
In second temperature control processor.
Second duty cycle range of the present embodiment is selected as 20%-50%, and the second duty ratio specific choice is according to itself and peace
The corresponding relationship of full maximum temperature value carries out, and the corresponding relationship of the two has: can choose when safe maximum temperature value is 40 DEG C
Second duty ratio is 20%, and it is 25% that the second duty ratio is selected when safe maximum temperature value is 44 DEG C, when safe maximum temperature value
It is 50% that the second duty ratio is selected when being 55 DEG C, and can choose the second duty ratio when safe maximum temperature value is 80 DEG C is 60%.
Embodiment two
The temprature control method of the present embodiment electric pad is improvement on the basis of embodiment one, in addition to be the same as example 1 with
It is outer except that:
1) as shown in Fig. 2, the second temperature sensor ResThermal-2 of measurement environment real time temperature is increased, in the second temperature control
Set environment temperature limit in processor MCU2, while environment real time temperature is measured, when environment real time temperature is more than or equal to environment
When temperature limit, controls the electric pad and stop power-up, the environment temperature limit value selection of the present embodiment is 35 DEG C, the environment temperature
Limit value is selected according to artificial experience, is not limited to 35 DEG C；
2) as shown in Fig. 2, increasing negative potential generating unit.Negative potential generating unit is given in output after alternating current 220V passes through multiplication of voltage,
The output end of negative potential generating unit is connected at the negative electricity bit line (output port 5 in Fig. 2) in electric pad after multiplication of voltage, from
And add negative potential signal to electric pad, it can be used for physical therapy.
Claims (7)
1. a kind of temprature control method of electric pad, it is characterised in that the following steps are included:
1) constant temperature angle value and a set time are set；
2) real time temperature of the electric pad is measured and compared with the constant temperature angle value；
3) when the real time temperature is less than the constant temperature angle value, first described in the first duty cycle pulse signal control with 100%
Electric pad carries out continuing the power-up set time；
4) at the end of the set time, then the electric pad is controlled with the second duty cycle pulse signal less than 100% and is carried out
Energised in pulses；
5) it when the real time temperature is more than or equal to the constant temperature angle value, controls the electric pad and stops power-up；
6) when the measurement of the real time temperature of the electric pad and/or Temperature protection fail, with second duty cycle pulse signal
It controls the electric pad and carries out energised in pulses.
2. the temprature control method of electric pad according to claim 1, it is characterised in that: second duty ratio be by with
The electric pad that the pulse signal of a variety of duty ratios carries out energised in pulses acquisition to the electric pad reaches safe maximum temperature
The duty ratio of corresponding pulse signal when value, the safe maximum temperature value are selected according to artificial experience.
3. the temprature control method of electric pad according to claim 2, it is characterised in that: second duty ratio be according to
Lower experimental procedure is obtained and is defaulted in the control device of the electric pad:
1) existing electric pad is made to measure the disabler or dismounting of itself real time temperature and Temperature protection power-off；
2) it is controlled with the pulse signal of a variety of different duties and carries out energised in pulses to the existing electric pad；
3) the existing electric pad is measured to generate heat after the energised in pulses multiple temperature values achieved；
4) maximum temperature value in the multiple temperature value is found out, empirically judge and filters out safe maximum temperature value；
5) pulse signal for finding out the corresponding safe maximum temperature value obtains described in the duty ratio conduct of the pulse signal
Second duty ratio.
4. the temprature control method of electric pad according to claim 3, it is characterised in that: the range of second duty ratio is
The range of 20%-60%, the safe maximum temperature value are 40-80 DEG C, second duty ratio and the safe maximum temperature value
Corresponding relationship selection be: the second duty ratio described in when the safe maximum temperature value is 40 DEG C is selected as 20%, when the peace
Second duty ratio described in when full maximum temperature value is 44 DEG C is selected as 25%, when the safe maximum temperature value is 55 DEG C described in
Second duty ratio is selected as 50%, when the safe maximum temperature value is 80 DEG C described in the second duty ratio be selected as 60%.
5. the temprature control method of -4 any electric pad according to claim 1, it is characterised in that: the constant temperature angle value
Range be 25-50 DEG C, the range of the set time is 60-600 seconds.
6. the temprature control method of -4 any electric pad according to claim 1, it is characterised in that also include the steps
Set environment temperature limit simultaneously measures environment real time temperature, when the environment real time temperature is more than or equal to the environment temperature limit value
When, it controls the electric pad and stops power-up.
7. the temprature control method of -4 any electric pad according to claim 1, it is characterised in that: the electric pad also contains
There is negative potential signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923787.7A CN108966372B (en) | 2018-08-14 | 2018-08-14 | Temperature control method of electric heating pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810923787.7A CN108966372B (en) | 2018-08-14 | 2018-08-14 | Temperature control method of electric heating pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108966372A true CN108966372A (en) | 2018-12-07 |
| CN108966372B CN108966372B (en) | 2021-09-28 |
Family
ID=64470165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810923787.7A Active CN108966372B (en) | 2018-08-14 | 2018-08-14 | Temperature control method of electric heating pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108966372B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067164A (en) * | 2020-09-14 | 2020-12-11 | 华帝股份有限公司 | Failure judgment method for temperature sensor of evaporator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200416598Y1 (en) * | 2006-03-09 | 2006-05-19 | 이미애 | Temperature control apparatus of electric heating for a bed |
| CN102548056A (en) * | 2010-12-07 | 2012-07-04 | 李臣华 | Intelligent temperature-control electric heating pad |
| CN203858525U (en) * | 2014-05-20 | 2014-10-01 | 国家电网公司 | Heating circuit for electric blanket |
| US8927908B2 (en) * | 2012-04-05 | 2015-01-06 | Multi-Technology Health Care Inc. | Temperature control circuit for two heating devices |
| CN105902079A (en) * | 2016-05-06 | 2016-08-31 | 西安唐城电热毯电器有限公司 | Intelligent electric blanket |
| CN107407941A (en) * | 2015-04-15 | 2017-11-28 | 菲利普莫里斯生产公司 | Electric heater is controlled with the apparatus and method of limit temperature with time distribution curve according to desired temperature |
-
2018
- 2018-08-14 CN CN201810923787.7A patent/CN108966372B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200416598Y1 (en) * | 2006-03-09 | 2006-05-19 | 이미애 | Temperature control apparatus of electric heating for a bed |
| CN102548056A (en) * | 2010-12-07 | 2012-07-04 | 李臣华 | Intelligent temperature-control electric heating pad |
| US8927908B2 (en) * | 2012-04-05 | 2015-01-06 | Multi-Technology Health Care Inc. | Temperature control circuit for two heating devices |
| CN203858525U (en) * | 2014-05-20 | 2014-10-01 | 国家电网公司 | Heating circuit for electric blanket |
| CN107407941A (en) * | 2015-04-15 | 2017-11-28 | 菲利普莫里斯生产公司 | Electric heater is controlled with the apparatus and method of limit temperature with time distribution curve according to desired temperature |
| CN105902079A (en) * | 2016-05-06 | 2016-08-31 | 西安唐城电热毯电器有限公司 | Intelligent electric blanket |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067164A (en) * | 2020-09-14 | 2020-12-11 | 华帝股份有限公司 | Failure judgment method for temperature sensor of evaporator |
| CN112067164B (en) * | 2020-09-14 | 2022-07-15 | 华帝股份有限公司 | Failure judgment method for temperature sensor of evaporator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108966372B (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106058976B (en) | Method for controlling heating of electronic product by adjusting charging current | |
| BR102015021329B1 (en) | ARRANGEMENT FOR BIOLOGICAL TISSUE CONTACT COAGULATION | |
| CN204576338U (en) | Power conditioning circuitry and cooking apparatus | |
| CN108966372A (en) | The temprature control method of electric pad | |
| CN206540988U (en) | A kind of sleeve pipe paper oil insulation electric heating combines senile experiment device | |
| JPH01108615A (en) | Temperature controller | |
| CN208506612U (en) | Electric blanket temperature control device | |
| CN208506611U (en) | Electric pad temperature control equipment | |
| CN108762338A (en) | Electric pad temperature control equipment | |
| CN109168204A (en) | The temprature control method of electric blanket | |
| CN106264090A (en) | Method and device based on Control of Voltage cooking apparatus and cooking apparatus | |
| CN204731657U (en) | For the constant temperature control circuit of electric calorifie installation | |
| CN106292784B (en) | Electric heating equipment and its control method and device | |
| US8742302B2 (en) | Heating device and its temperature control method | |
| CN107390740A (en) | heating apparatus control method and device | |
| CN205160814U (en) | Thick film pottery control by temperature change heating with humidifying pipe | |
| CN207048960U (en) | A kind of water pump dry combustion method protection circuit | |
| CN204121233U (en) | A kind of low-voltage direct constant temp wax treatment instrument | |
| CN209446089U (en) | A kind of water filling detection circuit of the steam generator of cooking apparatus | |
| CN108762337A (en) | Electric blanket temperature control device | |
| CN106646086B (en) | A kind of detection method of semiconductor gas sensor heater strip fracture of wire | |
| CN203859890U (en) | Heating circuit for heater | |
| CN205356708U (en) | Safe electric blanket accuse temperature switch | |
| CN106026020B (en) | A kind of thermal control stress circuit design | |
| CN208821109U (en) | A kind of multi-functional electric caldron control device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |