CN110312327A - Control-temperature electric heating system and electric heating utensil - Google Patents
Control-temperature electric heating system and electric heating utensil Download PDFInfo
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- CN110312327A CN110312327A CN201910689653.8A CN201910689653A CN110312327A CN 110312327 A CN110312327 A CN 110312327A CN 201910689653 A CN201910689653 A CN 201910689653A CN 110312327 A CN110312327 A CN 110312327A
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- 238000005485 electric heating Methods 0.000 title claims abstract description 85
- 239000000956 alloy Substances 0.000 claims abstract description 79
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 79
- 239000003990 capacitor Substances 0.000 claims description 63
- 230000005611 electricity Effects 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims description 9
- 206010037660 Pyrexia Diseases 0.000 claims description 3
- 238000000338 in vitro Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000011897 real-time detection Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000005070 sampling Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- 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
- H05B1/0202—Switches
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- 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
- H05B1/0272—For heating of fabrics
-
- 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
- H05B3/0019—Circuit arrangements
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- Control Of Resistance Heating (AREA)
Abstract
The present invention relates to control-temperature electric heating systems and electric heating utensil, including power-switching circuit, sample circuit, processor, thermistor alloy heater, trigger circuit and control switch；Sample circuit includes voltage sample component and current sample component；The input voltage and current flow that processor is acquired according to voltage sample component and current sample component, determine the current resistance value of thermistor alloy heater；According to temperature and resistance value incidence relation, the Current Temperatures of thermistor alloy heater are determined；When Current Temperatures are greater than the first preset temperature threshold, control switch is disconnected by trigger circuit, after Current Temperatures are reduced to the second preset temperature threshold, control switch is connected by trigger circuit.According to the Current Temperatures of the resistance value real-time detection heater of thermistor alloy heater, improve the safety of temperature control, heater is powered and powered off using the on-off of control switch, will not result in waste of resources, improve the practicability of control-temperature electric heating system and electric heating utensil.
Description
Technical field
The present invention relates to field of circuit technology, and in particular to a kind of control-temperature electric heating system and electric heating utensil.
Background technique
Electric pad is a kind of contact electric heating appliance, and special insulation performance is reached the soft cable-styled heating element of standard by it
It is woven into or is sewed up in woollen blanket in disk serpentine, when energization gives off heat, and raising temperature takes when being mainly used for people's sleep to reach
Warm purpose.
Currently, one is pinpoint detection office using thermistor there are mainly two types of the implementation methods of electric pad progress temperature control
Portion's temperature, and then control the temperature in entire circuit, but used if there is folding, the not position of thermistor, controller
It can't detect real time temperature, local temperature will be easy to cause excessively high and cause fire, safety is lower；Another kind is using double
Line is formed after being melted the medium between two line with heating function after excessively high using line with heating function temperature wherein one is dedicated as the line of induction
Protection is realized Temperature protection disconnection in short circuit, but this method can make the permanent damage of heater, cannot restore to make again
With resulting in waste of resources.
Therefore, the method security of progress temperature control is lower in the prior art or be easy to cause the wasting of resources, to reduce
The practicability of electric heating utensil.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of control-temperature electric heating system and electric heating utensil, it is existing to solve
The method security of temperature control is lower in technology or be easy to cause the wasting of resources, thus reduce the practicability of electric heating utensil
Problem.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of control-temperature electric heating system, comprising: power-switching circuit, sample circuit, processor, thermistor alloy fever
Body, trigger circuit and control switch；
The sample circuit includes: voltage sample component and current sample component；
One end of the thermistor alloy heater is connected by the control switch with the current sample component, institute
The other end for stating thermistor alloy heater is connected with external power interface；
The processor is connected by the power-switching circuit with the external power interface；
The control switch and the processor are connected with the trigger circuit respectively；
The processor and the external power interface are connected with the voltage sample component respectively；
The current sample component is also connected with the processor；
The input voltage signal of the external power interface of acquisition is sent to the processing by the voltage sample component
Device；
The current sample component sends the current flow signal for flowing through the thermistor alloy heater of acquisition
To the processor；
The processor determines the thermistor alloy according to the input voltage signal and the current flow signal
Input voltage, current flow and the current resistance value of heater；Temperature according to the pre-stored data and resistance value incidence relation, determine described in
The Current Temperatures of thermistor alloy heater；And when judging that the Current Temperatures are greater than the first preset temperature threshold, lead to
It crosses the trigger circuit and controls the control switch disconnection, so that after the Current Temperatures are reduced to the second preset temperature threshold,
The control switch conducting is controlled by the trigger circuit；
Wherein, second preset temperature threshold is less than first preset temperature threshold.
Further, in control-temperature electric heating system described above, the power-switching circuit includes power switch, insurance
Pipe, first resistor, first capacitor, second resistance, the first rectifying tube, the second rectifying tube, voltage-stabiliser tube, the second capacitor and third electricity
Hold；
Power switch includes: first switch contact and the connection external power supply for connecting the external power source interface firewire
The second switch contact of interface zero curve；
The first end of the protective tube is connected with the first switch contact；
The first end of the first resistor and the first end of first capacitor are connected with the second end of the protective tube respectively；
The second end of the second end of the first resistor and the first capacitor first end with the second resistance respectively
It is connected；
The first end of first rectifying tube and the first end of second rectifying tube respectively with the second resistance
Two ends are connected；
The first end of the first end of the voltage-stabiliser tube, the first end of second capacitor and the third capacitor respectively with institute
The second end for stating the second rectifying tube is connected；
The second end of first rectifying tube, the second end of the voltage-stabiliser tube, the second end of second capacitor and described
The second end of third capacitor is connected with the second switch contact respectively.
Further, in control-temperature electric heating system described above, the voltage sample component includes: 3rd resistor, the 4th
Resistance, the 5th resistance, the 6th resistance and the 4th capacitor；
The first end of the 3rd resistor is connected with the second end of the protective tube；
The first end of the first end of 4th capacitor, the first end of the 4th resistance and the 5th resistance respectively with
The second end of the 3rd resistor is connected；
The second end of 4th capacitor and the second end of the 4th resistance are connected with the second switch contact respectively；
The second end of 5th resistance is connected with the processor；
The first end of 6th resistance is connected with the second end of the protective tube, the second end of the 6th resistance and institute
Processor is stated to be connected.
Further, control-temperature electric heating system described above further includes filter shape component；
The current sample component is connected by the filter shape component with the processor；
The current flow signal of acquisition is sent to institute by the filter shape component by the current sample component
State processor.
Further, in control-temperature electric heating system described above, the filter shape component includes: the 7th resistance, the 8th
Resistance, the 5th capacitor and the 6th capacitor；
The first end of the first end of 5th capacitor, the first end of the 7th resistance and the 8th resistance respectively with
The processor is connected；
The first end of 6th capacitor is connected with the second end of the 8th resistance；
The second end of the second end of 5th capacitor, the second end of the 7th resistance and the 6th capacitor respectively with
The second switch contact is connected.
Further, control-temperature electric heating system described above, further includes display component；
The display component is connected with the processor；
The processor sends current operation information to the display component, so that display component output is described current
Job information；The current operation information includes: the Current Temperatures, the current flow, the input voltage and passes through
At least one of the current power that the current flow and the input voltage determine；
The processor determines current exception information according to the current operation information, and according to the current exception information
Current alerts information is generated, the current alerts information is sent to the display component, so that the display component exports institute
State warning message.
Further, control-temperature electric heating system described above, further includes temperature-controlled package；
The temperature-controlled package is connected with the processor；
User sends target temperature by the temperature-controlled package, and the processor receives the target temperature, and will
The target temperature is as first preset temperature threshold.
Further, in control-temperature electric heating system described above, the control switch is thyristor；
The thermistor alloy heater is connected by the thyristor with the current sample component.
Further, in control-temperature electric heating system described above, insulation is provided with outside the thermistor alloy heater
Layer；
The insulating layer wraps up the thermistor alloy heater, in case user gets an electric shock.
The present invention also provides a kind of electric heating utensils, comprising: instrument outer shell, power supply line and control-temperature electric heating system described above
System；
The control-temperature electric heating system is arranged inside the instrument outer shell；
The control-temperature electric heating system is connected by the power supply line with external power interface.
Control-temperature electric heating system and electric heating utensil of the invention, control-temperature electric heating system include: power-switching circuit, sampling electricity
Road, processor, thermistor alloy heater, trigger circuit and control switch；Sample circuit includes: voltage sample component and electricity
Flow sampling component；The input voltage signal of the external power interface of acquisition is sent to processor by voltage sample component；Electric current is adopted
The current flow signal for flowing through thermistor alloy heater of acquisition is sent to processor by sample component；Processor is according to input
Voltage signal and current flow signal determine the input voltage, current flow and current resistance value of thermistor alloy heater；Root
According to pre-stored temperature and resistance value incidence relation, the Current Temperatures of thermistor alloy heater are determined；And works as and judge to work as
When preceding temperature is greater than the first preset temperature threshold, control switch is controlled by trigger circuit and is disconnected, so that Current Temperatures are reduced to
After second preset temperature threshold, control switch conducting is controlled by trigger circuit.Heater in the present invention uses thermistor
After alloy heating element, resistance value can vary with temperature, and temperature is restored, resistance value is also restored therewith, so just can be direct
Determine Current Temperatures according to the resistance value of heater, so as to the temperature of real-time detection to heater, be not in because
It can't detect real time temperature and cause that local temperature is excessively high and there is a situation where fire, improve the safety of temperature control, and can
The power supply and power-off to heater are realized by controlling the on-off of control switch, will not be resulted in waste of resources, therefore, using this
The technical solution of invention can be improved the practicability of control-temperature electric heating system and electric heating utensil.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
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 technical 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
It obtains other drawings based on these drawings.
Fig. 1 is the functional block diagram of control-temperature electric heating system embodiment of the invention；
Fig. 2 is a circuit connection diagram of control-temperature electric heating system embodiment of the invention；
Fig. 3 is another circuit connection diagram of control-temperature electric heating system embodiment of the invention；
Fig. 4 is the structural schematic diagram of electric heating fixture embodiment of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Fig. 1 is the functional block diagram of control-temperature electric heating system embodiment of the invention, as shown in Figure 1, the temperature control electricity of the present embodiment
Hot systems include power-switching circuit 101, sample circuit, processor 103, thermistor alloy heater 104, trigger circuit
105 and control switch 106；Sample circuit includes voltage sample component 1021 and current sample component 1022.Wherein, thermistor
One end of alloy heating element 104 is connected by control switch 106 with current sample component 1022, thermistor alloy heater
104 other end is connected with external power interface；Processor 103 is connected by power-switching circuit 101 with external power interface；
Control switch 106 and processor 103 are connected with trigger circuit 105 respectively；Processor 103 and external power interface respectively with voltage
Sampling component 1021 is connected；Current sample component 1022 is also connected with processor 103.
Voltage sample component 1021 acquires the input voltage signal of external power interface, and the input voltage signal is sent
To processor 103；Current sample component 1022 acquires the current flow signal for flowing through thermistor alloy heater 104, and will
The current current signal is sent to processor 103；Processor 103 is believed according to the input voltage signal and current flow received
Number, in the way of corresponding computation rule and software filtering etc., determine thermistor alloy heater 104 input voltage,
Current flow and current resistance value；And the corresponding temperature of thermistor alloy heater 104 according to the pre-stored data is associated with resistance value
Relationship determines Current Temperatures corresponding with 104 current resistance value of thermistor alloy heater.Processor 103 is worked as according to what is obtained
Preceding temperature judges the size relation of Current Temperatures and the first preset temperature threshold, if Current Temperatures are greater than the first preset temperature threshold
Value, processor 103 then control corresponding control switch 106 by trigger circuit 105 and disconnect, so that stopping is thermistor alloy
Heater 104 is powered.After Current Temperatures are reduced to the second preset temperature threshold, processor 103 is controlled by trigger circuit 105 again
It makes corresponding control switch 106 to be connected, continues as the power supply of thermistor alloy heater 104, so that temperature be made to continue to increase directly
To the first preset temperature threshold.Wherein the second preset temperature threshold is less than the first preset temperature threshold.When control switch 106 is disconnected
It opens, stops after powering for thermistor alloy heater 104, voltage acquisition component 1021 can acquire input voltage signal and break
Then the current resistance value signal of thermistor alloy heater 104 in electric situation is believed input voltage signal and current resistance value
Number it is sent to processor 103, to make processor 104 determine input electricity in the way of corresponding computation rule and software filtering etc.
Pressure and current resistance value further according to pre-stored temperature and resistance value incidence relation determine working as thermistor alloy heater 104
Preceding temperature.In the present embodiment, to keep the constant temperature of thermistor alloy heater 104, preferably by the second preset temperature threshold
It is set as 1 DEG C smaller than the first preset threshold.Thermistor alloy heater 104 in the present embodiment is preferably PTC thermistor
Alloy wire；External power supply is preferably alternating current 220V, and 220V alternating current is preferably converted to 5V pressure stabilizing electricity by power-switching circuit 101
Source.
In addition, as shown in Figure 1, the thermistor alloy heater 104 of the present embodiment can multiple groups in parallel, wherein one group
Corresponding one group of control switch, 106, the one groups of trigger circuits 105 of thermistor alloy heater 104 and one group of current sample component
1022, it, can also be with so that processor 103 can be controlled separately the power supply and power-off of each group of thermistor alloy heater 104
The current flow of each group of thermistor alloy heater 104 is acquired respectively, to calculate separately each group of thermistor alloy
The current resistance and Current Temperatures of heater 104, and each group of thermistor alloy heater 104 can preset respectively with
Its corresponding first preset temperature threshold and the second preset temperature threshold.In this way, the control-temperature electric heating system using the present embodiment is set
The electric heating utensil set can realize that more people are controlled more, such as electric blanket, if having two groups of thermistor alloy heaters 104
And control switch 106 corresponding with every group of thermistor alloy heater 104, trigger circuit 105 and current sample component
1022, it can realize the double dual control of electric blanket, i.e. different temperature can be set in an Electric heat matress for double bed, both sides.
The control-temperature electric heating system of the present embodiment, including power-switching circuit 101, sample circuit, processor 103, temperature-sensitive electricity
Hinder alloy heating element 104, trigger circuit 105 and control switch 106；Sample circuit includes that voltage sample component 1021 and electric current are adopted
Sample component 1022；The input voltage signal of the external power interface of acquisition is sent to processor 103 by voltage sample component 1021；
The current flow signal for flowing through thermistor alloy heater 104 of acquisition is sent to processor by current sample component 1022
103；Processor 103 determines the input electricity of thermistor alloy heater 104 according to input voltage signal and current flow signal
Pressure, current flow and current resistance value；Temperature according to the pre-stored data and resistance value incidence relation, determine thermistor alloy heater
104 Current Temperatures；And when judging that Current Temperatures are greater than the first preset temperature threshold, is controlled and controlled by trigger circuit 105
It makes switch 106 to disconnect, so as to open after Current Temperatures are reduced to the second preset temperature threshold by the control control of trigger circuit 105
Close 106 conductings.Heater in the present embodiment uses thermistor alloy heater 104, and resistance value can vary with temperature, and
And after temperature is restored, resistance value is also restored therewith, just directly can determine Current Temperatures according to the resistance value of heater in this way, from
And can real-time detection to the temperature of heater, be not in because can't detect real time temperature and cause local temperature excessively high and send out
The case where calamity of lighting a fire, improves the safety of temperature control, and can be realized by the on-off of control switch 106 to heater
Power supply and power-off, will not result in waste of resources, improve the practicability of control-temperature electric heating system and electric heating utensil.
Further, the control-temperature electric heating system of the present embodiment can also include filter shape component 107, current sample component
1022 are connected by filter shape component 107 with processor 103.Current sample component 1022 leads to the current flow signal of acquisition
Processor 103 is sent to after crossing the filter shape of filtering shaping component 107.Filter had both can be used in the control-temperature electric heating system of the present embodiment
Wave shaping component 107 will be sent to processor 103 after current flow signal filter shape；Filter shape component can not also be used
107, current flow signal is directly sent to processor 103.If using filter shape component 107 to current flow signal
It is filtered shaping, if that the control-temperature electric heating system of the present embodiment includes multiple groups thermistor alloy heater 104, then
It just include multiple groups filter shape component 107, and every group of filter shape component 107 and every group of thermistor alloy heater 104
It corresponds.
Further, the control-temperature electric heating system of the present embodiment further includes display component 108, display component 108 and processor
103 are connected.Processor 103 sends current operation information to display component 108, so that display component 108 exports work at present letter
Breath, wherein current operation information may include at least one of Current Temperatures, current flow, input voltage and current power,
Current power is processor 103 according to input voltage and current flow, is determined using corresponding computation rule.Processor 103
Exception can be determined whether there is according to current operation information, so that it is determined that current exception information, and according to current exception information
Current alerts information is generated, current alerts information is sent to display component 108, so that display component 108 exports current alerts
Information.Wherein, exception information includes voltage change exception, current overload, is on or off.If the control-temperature electric heating of the present embodiment
System includes multiple groups thermistor alloy heater 104, then display component 108 is in output current operation information and current alerts
When information, the corresponding current operation information of every group of thermistor alloy heater 104 is needed to export respectively with current alerts information,
It may also set up multiple groups display component 108, corresponded with thermistor alloy heater 104.Display component 108 may include showing
Display screen shows current operation information and current alerts information by display screen, also may include work light, referred to by work
Show lamp flashing output current alerts information, different flashing modes represents different warning messages.The present embodiment can also pass through
Display screen shows that different character representations exports different warning messages, such as: display E1 expression does not connect load, display E2 table
Show 104 poor contact of thermistor alloy heater etc..
Further, the control-temperature electric heating system of the present embodiment further includes temperature-controlled package, temperature-controlled package and processing
Device 103 is connected.User sends target temperature by temperature-controlled package, and processor 103 receives target temperature, and by target temperature
As the first preset temperature threshold.Temperature-controlled package in the present embodiment can be using being manually entered and/or gear adjusts
Mode, wherein being manually entered is that user directly inputs the temperature oneself wanted to set up, gear adjusting be provided with it is several not
Same gear, each gear represent different temperature, and user can realize that temperature is adjusted by adjusting different gears.This reality
The temperature range that applying can be inputted or be adjusted with user in example is preferably 25~75 DEG C.If the control-temperature electric heating of the present embodiment
System includes multiple groups thermistor alloy heater 104, then temperature-controlled package can send out every group of thermistor alloy
First preset temperature threshold of hot body 104 is configured or adjusts.
Further, the control switch in the control-temperature electric heating system of the present embodiment is thyristor, i.e., silicon-controlled.Both can be
One-way SCR can also be bidirectional triode thyristor.Thermistor alloy heater 104 passes through thyristor and current sample component 1022
It is connected, wherein the cathode of thyristor is connected with current sample component 1022.
Further, settable insulation outside the thermistor alloy heater 104 in the control-temperature electric heating system of the present embodiment
Layer, insulating layer wrap up thermistor alloy heater 104, in case user gets an electric shock.
Fig. 2 is a circuit connection diagram of control-temperature electric heating system embodiment of the invention, as shown in Fig. 2, this figure is not have
The circuit connection diagram of temperature control electric heating system when filter shape component 107 is set.In the control-temperature electric heating system of the present embodiment, power supply turns
Changing circuit 101 includes: power switch, protective tube F1, first resistor R1, first capacitor C1, second resistance R2, the first rectifying tube
D1, the second rectifying tube D2, voltage-stabiliser tube ZD1, the second capacitor C2 and third capacitor C3, wherein power switch includes connecting external electricity
The first switch contact K1 of the source interface firewire and second switch contact K2 of connection external power source interface zero curve.
The first end of protective tube F1 is connected with first switch contact K1；The first end of first resistor R1 and first capacitor C1's
First end is connected with the second end of protective tube F1 respectively；The second end of first resistor R1 and the second end of first capacitor C1 respectively with
The first end of second resistance R2 is connected；The first end of first rectifying tube D1 and the first end of the second rectifying tube D2 are electric with second respectively
The second end for hindering R2 is connected；The first end of the first end of voltage-stabiliser tube ZD1, the first end of the second capacitor C2 and third capacitor C3 is distinguished
It is connected with the second end of the second rectifying tube D2；The second end of first rectifying tube D1, the second end of voltage-stabiliser tube ZD1, the second capacitor C2
Second end and the second end of third capacitor C3 be connected respectively with second switch contact K2.Wherein, the electricity of first resistor R1 and first
Hold C1 for being depressured, second resistance R2 is used for current limliting.
In the control-temperature electric heating system of the present embodiment, voltage sample component 1021 include: 3rd resistor R3, the 4th resistance R4,
5th resistance R5, the 6th resistance R6 and the 4th capacitor C4.Wherein, the second end phase of the first end of 3rd resistor R3 and protective tube F1
Even；The first end of the first end of 4th capacitor C4, the first end of the 4th resistance R4 and the 5th resistance R5 respectively with 3rd resistor R3
Second end be connected；The second end of 4th capacitor C4 and the second end of the 4th resistance R4 are connected with second switch contact K2 respectively；
The second end of 5th resistance R5 is connected with processor 103；The first end of 6th resistance R6 is connected with the second end of protective tube F1, the
The second end of six resistance R6 is connected with processor 103.220V alternating current obtains defeated through 3rd resistor R3 and the 4th resistance R4 partial pressure
Enter voltage signal, is sampled through the 4th capacitor C4 and the 5th resistance R5 shaping for processor 103, the 6th resistance R6 is processor 103
Synchronous sampling signal is provided, to provide a benchmark for processor operation.
As shown in Fig. 2, control-temperature electric heating system shown in this figure is provided with two groups of thermistor alloy heaters 104, therefore
In the control-temperature electric heating system of the present embodiment, current sample component 1021, trigger circuit 105 and control switch 106 are also provided with two
Group, current sample component 1021 include the 9th resistance R9 and thirteenth resistor R13, trigger circuit 105 include the tenth resistance R10 and
14th resistance R14, control switch 106 include the first silicon-controlled Q1 and the second silicon-controlled Q2.Wherein, the 9th resistance R9 is for adopting
Collect the current flow signal of first group of thermistor alloy heater 104, thirteenth resistor R13 is for acquiring second group of temperature-sensitive electricity
Hinder the current flow signal of alloy heating element 104.The first end and the second temperature-sensitive electricity of first group of thermistor alloy heater 104
The first end of resistance alloy heating element 104 is connected with the second end of protective tube F1 respectively；The first end and first of first silicon-controlled Q1
The second end of group thermistor alloy heater 104 is connected；The second end of first silicon-controlled Q1 and the first end of the 9th resistance R9
It is connected；The first end of tenth resistance R10 and the first end of the 9th resistance R9 are connected with processor 103 respectively；Tenth resistance R10's
Second end is connected with the third end of the first silicon-controlled Q1；The second end of 9th resistance R9 is connected with second switch contact K2.First
The first end of silicon-controlled Q1 is connected with the second end of first group of thermistor alloy heater 104；The second of second silicon-controlled Q2
End is connected with the first end of thirteenth resistor R13；The first end of 14th resistance R14 and the first end point of thirteenth resistor R13
It is not connected with processor 103；The second end of 14th resistance R14 is connected with the third end of the second silicon-controlled Q2；Thirteenth resistor
The second end of R13 is connected with second switch contact K2.Processor 103 sends the first trigger pulse through the tenth resistance R10 triggering the
The on-off of one silicon-controlled Q1 is to first group of power supply of thermistor alloy heater 104 or power-off；Processor 103 sends the second triggering
Pulse through the 14th resistance R14 trigger the on-off of the second silicon-controlled Q2 to the power supply of second group of thermistor alloy heater 104 or
Power-off.
Fig. 3 is another circuit connection diagram of control-temperature electric heating system embodiment of the invention, as shown in figure 3, this figure is to set
The circuit connection diagram of temperature control electric heating system when being equipped with filter shape component 107.Control-temperature electric heating system shown in this figure is provided with two
Group thermistor alloy heater 104, therefore in the control-temperature electric heating system of the present embodiment, filter shape component 107 is also provided with
Two groups.Wherein first group of filter shape component 107 includes: the 7th resistance R7, the 8th resistance R8, the 5th capacitor C5 and the 6th capacitor
C6.The first end of the first end of 5th capacitor C5, the first end of the 7th resistance R7 and the 8th resistance R8 respectively with 103 phase of processor
Even；The first end of 6th capacitor C6 and the first end of the 9th resistance R9 are connected with the second end of the 8th resistance R8 respectively；5th electricity
Second end, the second end of the 7th resistance R7 and the second end of the 6th capacitor C6 for holding C5 are connected with second switch contact K2 respectively.
Second group of filter shape component 107 includes: resistance R11, resistance R12, capacitor C7, capacitor C8.The first end of capacitor C7, resistance
The first end of R11 and the first end of resistance R12 are connected with processor 103 respectively；The first end and thirteenth resistor R13 of capacitor C8
First end be connected respectively with the second end of resistance R12；The of the second end of capacitor C7, the second end of resistance R11 and capacitor C8
Two ends are connected with second switch contact K2 respectively.9th resistance R9 obtains the current of first group of thermistor alloy heater 104
Current signal, current flow signal are sent to processing through the 6th capacitor C6, the 8th resistance R8, the 7th resistance R7 and the 5th capacitor C5
Device 103；Thirteenth resistor R13 obtains the current flow signal of second group of thermistor alloy heater 104, current flow signal
Processor 103 is sent to through capacitor C8, resistance R12, resistance R11 and capacitor C7.
Fig. 4 is the structural schematic diagram of electric heating fixture embodiment of the invention.As shown in figure 4, the electric heating of the present embodiment
Utensil includes instrument outer shell 201, control-temperature electric heating system 202 described in power supply line 203 and above-described embodiment.Control-temperature electric heating system
202 are arranged inside instrument outer shell 201；Control-temperature electric heating system 202 is connected by power supply line 203 with external power interface 301.Electricity
After heating utensil is connect by power supply line 203 with external power interface 301, target temperature, temperature control electricity can be independently arranged in user
Hot systems 202 can make electric heating utensil be heated to target temperature.
The point of the present embodiment heats utensil, including temperature control described in instrument outer shell 201, power supply line 203 and above-described embodiment
Electric heating system 202.Control-temperature electric heating system 202 in the present embodiment uses thermistor alloy heater 104, and resistance value can
It varies with temperature, and after temperature recovery, resistance value is also restored therewith, it so just can be directly according to the resistance value of heater come really
Determine Current Temperatures, is not in cause office because can't detect real time temperature so as to the temperature of real-time detection to heater
Portion's temperature is excessively high and there is a situation where fire, improves the safety of temperature control, and can be by control-temperature electric heating system 202
The on-off of control switch 106 realizes the power supply and power-off to heater, will not result in waste of resources, improves electric heating utensil
Practicability.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that in the description of the present invention, term " first ", " second " etc. are used for description purposes only, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of control-temperature electric heating system characterized by comprising power-switching circuit, sample circuit, processor, thermistor
Alloy heating element, trigger circuit and control switch；
The sample circuit includes: voltage sample component and current sample component；
One end of the thermistor alloy heater is connected by the control switch with the current sample component, the heat
The other end of quick electric resistance alloy heater is connected with external power interface；
The processor is connected by the power-switching circuit with the external power interface；
The control switch and the processor are connected with the trigger circuit respectively；
The processor and the external power interface are connected with the voltage sample component respectively；
The current sample component is also connected with the processor；
The input voltage signal of the external power interface of acquisition is sent to the processor by the voltage sample component；
The current flow signal for flowing through the thermistor alloy heater of acquisition is sent to institute by the current sample component
State processor；
The processor determines the thermistor alloy fever according to the input voltage signal and the current flow signal
Input voltage, current flow and the current resistance value of body；Temperature according to the pre-stored data and resistance value incidence relation, determine the temperature-sensitive
The Current Temperatures of electric resistance alloy heater；And when judging that the Current Temperatures are greater than the first preset temperature threshold, pass through institute
It states trigger circuit and controls the control switch disconnection, so as to pass through after the Current Temperatures are reduced to the second preset temperature threshold
The trigger circuit controls the control switch conducting；
Wherein, second preset temperature threshold is less than first preset temperature threshold.
2. control-temperature electric heating system according to claim 1, which is characterized in that the power-switching circuit includes that power supply is opened
Pass, protective tube, first resistor, first capacitor, second resistance, the first rectifying tube, the second rectifying tube, voltage-stabiliser tube, the second capacitor and
Third capacitor；
Power switch includes: first switch contact and the connection external power source interface for connecting the external power source interface firewire
The second switch contact of zero curve；
The first end of the protective tube is connected with the first switch contact；
The first end of the first resistor and the first end of first capacitor are connected with the second end of the protective tube respectively；
The second end of the second end of the first resistor and the first capacitor is connected with the first end of the second resistance respectively；
The first end of first rectifying tube and the first end of second rectifying tube second end with the second resistance respectively
It is connected；
The first end of the first end of the voltage-stabiliser tube, the first end of second capacitor and the third capacitor is respectively with described
The second end of two rectifying tubes is connected；
Second end, the second end of the voltage-stabiliser tube, the second end and the third of second capacitor of first rectifying tube
The second end of capacitor is connected with the second switch contact respectively.
3. control-temperature electric heating system according to claim 2, which is characterized in that the voltage sample component includes: third electricity
Resistance, the 4th resistance, the 5th resistance, the 6th resistance and the 4th capacitor；
The first end of the 3rd resistor is connected with the second end of the protective tube；
The first end of the first end of 4th capacitor, the first end of the 4th resistance and the 5th resistance respectively with it is described
The second end of 3rd resistor is connected；
The second end of 4th capacitor and the second end of the 4th resistance are connected with the second switch contact respectively；
The second end of 5th resistance is connected with the processor；
The first end of 6th resistance is connected with the second end of the protective tube, the second end of the 6th resistance and the place
Device is managed to be connected.
4. control-temperature electric heating system according to claim 2, which is characterized in that further include filter shape component；
The current sample component is connected by the filter shape component with the processor；
The current flow signal of acquisition is sent to the place by the filter shape component by the current sample component
Manage device.
5. control-temperature electric heating system according to claim 4, which is characterized in that the filter shape component includes: the 7th electricity
Resistance, the 8th resistance, the 5th capacitor and the 6th capacitor；
The first end of the first end of 5th capacitor, the first end of the 7th resistance and the 8th resistance respectively with it is described
Processor is connected；
The first end of 6th capacitor is connected with the second end of the 8th resistance；
The second end of the second end of 5th capacitor, the second end of the 7th resistance and the 6th capacitor respectively with it is described
Second switch contact is connected.
6. control-temperature electric heating system according to claim 1, which is characterized in that further include display component；
The display component is connected with the processor；
The processor sends current operation information to the display component, so that the display component exports the work at present
Information；The current operation information includes: the Current Temperatures, the current flow, the input voltage and passes through described
At least one of the current power that current flow and the input voltage determine；
The processor determines current exception information according to the current operation information, and is generated according to the current exception information
The current alerts information is sent to the display component by current alerts information, so that the display component exports the report
Alert information.
7. control-temperature electric heating system according to claim 1, which is characterized in that further include temperature-controlled package；
The temperature-controlled package is connected with the processor；
User sends target temperature by the temperature-controlled package, and the processor receives the target temperature, and will be described
Target temperature is as first preset temperature threshold.
8. control-temperature electric heating system according to claim 1, which is characterized in that the control switch is thyristor；
The thermistor alloy heater is connected by the thyristor with the current sample component.
9. control-temperature electric heating system according to claim 1-8, which is characterized in that the thermistor alloy fever
It is provided with insulating layer in vitro；
The insulating layer wraps up the thermistor alloy heater, in case user gets an electric shock.
10. a kind of electric heating utensil characterized by comprising described in instrument outer shell, power supply line and claim any one of 1-9
Control-temperature electric heating system；
The control-temperature electric heating system is arranged inside the instrument outer shell；
The control-temperature electric heating system is connected by the power supply line with external power interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910689653.8A CN110312327A (en) | 2019-07-29 | 2019-07-29 | Control-temperature electric heating system and electric heating utensil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910689653.8A CN110312327A (en) | 2019-07-29 | 2019-07-29 | Control-temperature electric heating system and electric heating utensil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112968418A (en) * | 2021-03-02 | 2021-06-15 | 四川长虹空调有限公司 | Electric blanket safety protection controller and method |
| CN114376275A (en) * | 2022-01-14 | 2022-04-22 | 深圳麦时科技有限公司 | Aerosol generating device, control method and control device thereof, and storage medium |
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| CN103987137A (en) * | 2014-04-10 | 2014-08-13 | 上海复亚微电子有限公司 | Circuit and method for controlling metal ceramic heating element through bidirectional triode thyristor |
| CN210840082U (en) * | 2019-07-29 | 2020-06-23 | 石家庄丰亚电器有限公司 | Temperature-controlled electric heating system and electric heating appliance |
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| CN201945896U (en) * | 2010-12-28 | 2011-08-24 | 杭州智源电子有限公司 | Temperature control circuit of metal ceramic heating block |
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| CN112968418A (en) * | 2021-03-02 | 2021-06-15 | 四川长虹空调有限公司 | Electric blanket safety protection controller and method |
| CN114376275A (en) * | 2022-01-14 | 2022-04-22 | 深圳麦时科技有限公司 | Aerosol generating device, control method and control device thereof, and storage medium |
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