CN1925699B - Whole circuit temperature-controlling electric heating device - Google Patents
Whole circuit temperature-controlling electric heating device Download PDFInfo
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- CN1925699B CN1925699B CN2006100529519A CN200610052951A CN1925699B CN 1925699 B CN1925699 B CN 1925699B CN 2006100529519 A CN2006100529519 A CN 2006100529519A CN 200610052951 A CN200610052951 A CN 200610052951A CN 1925699 B CN1925699 B CN 1925699B
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Abstract
This invention relates to whole circuit temperature constant heating device, which comprises heating load, heating element and control device, wherein, control device comprises power circuit, synchronous trace circuit, compare circuit, output circuit and sample circuit composed of conductive parts, resistance and heating parts; execution elements controllable cathode one path is connected to the heating element and with other connected to output circuit.
Description
Technical field
The present invention relates to a kind of temperature control equipment of the electric heating appliance with line heating.
Background technology
Existing flexibility and rigidity are with the electric heating appliance of line heating, what all adopt aspect temperature control technique is that heater and temperature sensor are the two parts that independently separate, i.e. the sampling of temperature control signal is that the variations in temperature by heater element causes the temperature sensor resistance to change feeding back to realizing the temperature controller tool in the correspondent control circuits.Be made up of heating carrier, heater element and controller, heater element is installed on the heating carrier, connects the contact interface at heating carrier one end, connect contact interface and controller through connecting flexible cord, and connect mains supply through attaching plug, controller comprises shell and installation control circuit within it, the weak point of its existence is, at first, the element of utensil is many, and the interface contact is many, it is many to connect flexible cord, thereby easily cause utensil failure rate height, the repair rate height, and cost is big, complex process; Secondly, phase shift temperature control utensil also exists Harmonic Interference to cause electromagnetic pollution etc.; The 3rd, because the interface volume is big, realize that in small-sized electric heating appliance the temperature control difficulty is bigger.
Summary of the invention
Its purpose of the present invention just is to provide a kind of control-temperature electric heating utensil, and it is few to have an interface contact, and volume is little, the characteristics that components and parts are few, cost is low, failure rate is low, make simple, easy to operate, and stable and reliable for performance, safe, no electromagnetic pollution.
The technical scheme that realizes above-mentioned purpose and take comprises, by the heating carrier, heater element and controller are formed, heater element is installed on the heating carrier, connect the contact interface at heating carrier one end, through connecting flexible cord tie point interface and controller, and connect mains supply through attaching plug, controller comprises shell and its interior control circuit is installed, control circuit comprises power circuit, power circuit is connected output circuit and sample circuit through synchronous follow circuit with comparison circuit, sample circuit is by unilateal conduction device Q, resistance and heater element are composed in series, executive component controllable silicon anode connects power supply, negative electrode one tunnel sending and receiving thermal element, another road connects the comparison circuit input behind resistance and unilateal conduction device and contact, and the SCR control utmost point connects output circuit behind contact.
Compared with prior art this device has the following advantages:
1, owing to adopted the design of sample circuit, thereby reduced components and parts, it is few to have an interface contact, and volume is little, the characteristics that components and parts are few, and cost is low, and failure rate is low, makes simple, easy to operate.
2, owing to adopted 2 contact Interface design, thereby it is little to have a volume, and the characteristics that the interface contact is few are specially adapted to design, the manufacturing of small-sized or special-shaped electric heating appliance.
3,, thereby have defencive function owing to adopted the kinds of protect circuit design, the damage of any one components and parts, utensil does not all produce the harm of thermal shock, does not produce fire, and is safe, dependable performance, and do not have Harmonic Interference and electromagnetic pollution.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 forms schematic diagram for this apparatus structure;
Fig. 2 is the sample circuit electrical schematic diagram in this device control circuit;
Fig. 3 is this device embodiment one control device electrical schematic diagram;
Fig. 4 is this device embodiment two control device electrical schematic diagrams;
Fig. 5 is transmission of electricity circuit embodiments one electrical schematic diagram in this device control circuit;
Fig. 6 is transmission of electricity circuit embodiments two electrical schematic diagrams in this device control circuit;
Fig. 7 is transmission of electricity circuit embodiments three electrical schematic diagrams in this device control circuit;
Fig. 8 is transmission of electricity circuit embodiments four electrical schematic diagrams in this device control circuit;
Specific embodiments
Sampling design in this device control circuit is in the control circuit output low level, when executive component controllable silicon V is in the state of shutoff, is undertaken by sample circuit.
This device is by heating carrier 1, heater element 2 and controller 6 are formed, as shown in Figure 1, heater element 2 is installed on the heating carrier, connect contact interface 3 at heating carrier 1 one ends, connect contact interface 3 and controller 6 through connecting flexible cord 4, and connect mains supply through attaching plug 5, controller 6 comprises the control circuit installed in it that reaches of shell, control circuit comprises power circuit, power circuit is connected output circuit and sample circuit through synchronous follow circuit with comparison circuit, sample circuit is by unilateal conduction device Q, resistance R and heater element RO are composed in series, as shown in Figure 2, executive component controllable silicon V anode connects power supply, negative electrode one tunnel sending and receiving thermal element RO, another road connects the comparison circuit input behind resistance R and unilateal conduction device Q and contact a, the controllable silicon V control utmost point connects output circuit behind contact b.The output voltage of the synchronous follow circuit in the above-mentioned control circuit is an oscillating voltage, and the cycle of oscillating voltage equated with the cycle of supply voltage.Contact interface 3 is heater element 2 and the tie point that is connected flexible cord 4, and interface contact 3 has only 2 contacts.
Sample circuit as shown in Figure 2, in the control circuit main road, when executive component controllable silicon V is in off state, form sample circuit to comparison circuit by unilateal conduction device Q and level setting resistance R with heater element RO and finish sampling work, (common metal silk such as copper when heater element RO resistance changes with temperature, iron and alloy silk thereof all have ptc characteristics), be that the temperature high value increases, the temperature low resistance reduces, the working power that the duty control circuit of its variation has been set makes sample circuit obtain electricity by the comparison circuit input and produces the level variation, compare the output level of decision comparator simultaneously with the reference voltage of having set, thereby control actuating component controllable silicon V turn-on and turn-off realize function of temperature control.
The high potential that unilateal conduction device Q in the sample circuit plays blocking-up RO is applied to control circuit.The protection control circuit is not damaged, and unilateal conduction device Q can use controllable silicon, transistor, field effect transistor and diode etc.
R in the sample circuit is that comparison circuit input original levels is set resistance, and it is fixed to come according to heater element RO resistance size when the cold conditions, and big R is little for the RO resistance, and little R is big for the RO resistance, and the R resistance can be null value as required.
Output circuit has various ways, the output circuit that directly is coupled, as shown in Figure 5, control circuit by the signal of IC output through D5, R11, V, RO to N, wherein, D
4High level during blocking-up RO conducting, the protection control circuit, R11 is a current-limiting resistance, its value can be zero.When the output signal of IC satisfied output circuit V conducting, V just was in conducting state always.
The resistance-capacitance coupling output circuit; as shown in Figure 6; control circuit by the signal of IC output through D4, C4, R11, V, RO to N; high level when wherein D4 blocks the RO conducting; the protection control circuit, R11 is the discharge resistance of C4, C4 is a coupling capacitance; the signal of IC output must be an alternation, otherwise output circuit can not make the V conducting.
Transformer coupled output circuit, as shown in Figure 7, control circuit is amplified through Ra to BG by the signal of IC output, exporting the output signal of V, IC and V to by T does not have and contacts directly, and T is coupled to V by transformer, therefore, the IC output signal must be an alternating signal, otherwise not conducting of V.
Photoelectricity coupling output circuit, as shown in Figure 8, control circuit by the IC output signal through R
11Photoelectricity coupling circuit to solid-state relay makes the V conducting, and the output signal electric current of IC must satisfy the photoelectricity couple current in the V, otherwise not conducting of V.
Control circuit is by power circuit, follow circuit synchronously, and comparison circuit, output circuit and sample circuit are formed, and power circuit divides all-wave working power and half-wave working power.
Embodiment one, the electrical schematic diagram of all-wave working power, and as shown in Figure 3, power circuit divides 2 tunnel, one route protective tube F, transformer T, diode D6, voltage-stabiliser tube DW1, filter capacitor C2 to form, and the control circuit stabilized voltage power supply is provided; Another route diode D1
1, D2, D8, D9 form, and applies voltage for heater element RO by the state of a control of the controlled circuit of executive component controllable silicon V.
Follow circuit is by resistance R 2, R3, R4, R5, operational amplifier IC1, capacitor C 3 synchronously, and spacing voltage-stabiliser tube DW2 forms.The current potential of the negative input end of operational amplifier IC1 is taken from the negative input end of IC2 comparison circuit.R4, R5 are biasing resistor; R2, R3 follow resistance synchronously; IC1 anode input voltage is provided; make IC1 output be turned into high level at the later zero passage place of the next waveform arrival of line voltage; the working power of comparison circuit reference input voltage is provided, and this high level is maintained until voltage waveform when locating near zero point, and IC1 is output as oscillating voltage waveform and synchronous with line voltage; R4 is a feedback resistance, shields.
Comparison circuit is by resistance R 6, R8, R7, R9, R10, R0, diode D3, D4, trimmer potentiometer RW2, regulator potentiometer RW1, operational amplifier IC2 forms, R6, R8, D4, R7, RW2, RW1 constitutes operational amplifier IC2 anode input circuit, wherein D4 is a temperature compensated diode, RW2 is that initial reference point input voltage is adjusted potentiometer, RW1 is a reference point input voltage regulation potentiometer, it is temperature height regulating and controlling, it is fixed to set button adjusting by the controller external temperature, R9, D3, R10, R0 constitutes operational amplifier IC2 negative terminal input voltage branch road, D3 wherein, R10, R0 forms sample circuit, compare decision IC2 output level state with reference voltage.When heater element is in heated condition, the negative terminal input voltage of IC2 is a high level, high potential because of D3 blocking-up R0, sample circuit is the open circuit shape, IC2 output low level this moment, the grid voltage waveform of keeping executive component controllable silicon V conducting turn-offs V near the place at zero point, at the zero passage place that the next waveform of line voltage arrives, IC2 just, the negative terminal input voltage compares, if the negative terminal input voltage is lower than the anode input voltage, IC2 exports high level, make controllable silicon V conducting, repeat above-mentioned operating state, if the negative terminal input voltage is higher than the anode input voltage, the IC2 output low level, V turn-offs, R0 stops heating, when heater element R0 temperature was high, its resistance increased, by the sampling of sample circuit, IC2 negative terminal incoming level is risen, when this level was higher than the anode incoming level, the IC2 output low level was turn-offed controllable silicon V, R0 stops heating, reaches circuit temperature-controlling function completely.
Output circuit is by diode D5, D6, resistance R 11, R12, heater element R0, capacitor C 4, C5, and controllable silicon V forms.Wherein D5 is identical with the effect of D3, and D6 is the protection diode, and C4, R11 are resistance-capacitance coupling, and the pulsafeeder of V conducting is provided.When comparison circuit IC2 has high level when output, be coupled to the trigger electrode of V by D5, C4 and R11, make the V conducting, R0 obtains electric heating, otherwise, not conducting of V, R0 stops heating.C4 and R11 only when IC2 output ripple voltage, can provide the trigger current of V conducting, and when IC2 output was high level or low level all the time, C4 and R11 had played the effect of protective circuit.Wherein resistance R 1, R13, luminous tube LED constitute power supply and operating state indicating circuit.
Embodiment two, as shown in the figure, be half-wave control electrical schematic diagram, its principle is identical with all-wave control, just control circuit is in the half-wave state of a control, the work of control heater element RO when the line voltage half-wave, another half-wave control circuit output low level, controllable silicon V turn-offs, and heater element RO does not work all the time.
For the output circuit that prevents control circuit, output signal disturbed sampling circuit and make control circuit out of control, adopted the dual mode realization, first kind is that output circuit adopts transformer coupled and photoelectricity coupling (solid-state relay), the output signal of this type of output circuit is without heater element RO, when making sample circuit know near zero point of electrical network waveform sampling, interference-free.The The whole control circuit is by the synchronous follow circuit of power circuit, comparison circuit, and output circuit is formed.Second kind is the RO that the output signal of the output circuit of control circuit has been passed through sample circuit, but do not influence comparison circuit input sampled level, reach the not function of disturbed sampling circuit of control circuit output signal equally, its operation principle is the height that height that synchronous follow circuit is followed the electrical network waveform determines synchronous follow circuit output level, by comparison circuit, output circuit is when the low level output state, simultaneously near locating the zero point of electrical network waveform, comparison circuit obtains the signal of synchronous follow circuit and the sampled signal of sample circuit compares the output level height that determines output circuit, promote executive component V (controllable silicon etc.), reach circuit temperature-controlling function completely.Output circuit has 2 kinds of output forms; First kind is directly coupling output, and second kind is resistance-capacitance coupling output.
This device heater element RO is single or individual layer heating line, and this heating line has ptc characteristics, as copper, iron and alloy silk thereof etc.Also can be double-deck heating line, the one metal wire in the double-deck heating line has ptc characteristics, as copper, iron and alloy silk thereof.
This device heater element carrier is flexible material or rigid material, and flexible material is chemical fabric, man-made fibre blanket, cotton, cotton blanket etc., and rigid material is plastics, plank, slabstone, metallic plate etc.
Claims (3)
1. whole circuit temperature-controlling electric heating device, by heating carrier (1), heater element (2) and controller (6) are formed, heater element (2) is installed on the heating carrier (1), connect contact interface (3) at heating carrier (1) one end, connect contact interface (3) and controller (6) through connecting flexible cord (4), and connect mains supply through attaching plug (5), controller (6) comprises shell and its interior control circuit is installed, control circuit comprises power circuit, it is characterized in that, power circuit is connected output circuit and sample circuit through synchronous follow circuit with comparison circuit, sample circuit is by unilateal conduction device (Q), resistance (R) and heater element (RO) are composed in series, executive component controllable silicon (V) anode connects power supply, negative electrode one tunnel sending and receiving thermal element (RO), another road connects the comparison circuit input behind resistance (R) and unilateal conduction device (Q) and first contact (a), controllable silicon (V) the control utmost point connects output circuit behind second contact (b).
2. a kind of whole circuit temperature-controlling electric heating device according to claim 1 is characterized in that the output voltage of the synchronous follow circuit in the control circuit is an oscillating voltage, and the cycle of oscillating voltage equated with the cycle of supply voltage.
3. a kind of whole circuit temperature-controlling electric heating device according to claim 1 is characterized in that, contact interface (3) is heater element (2) and the tie point that is connected flexible cord (4), and contact interface (3) has only 2 contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100529519A CN1925699B (en) | 2006-11-02 | 2006-11-02 | Whole circuit temperature-controlling electric heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100529519A CN1925699B (en) | 2006-11-02 | 2006-11-02 | Whole circuit temperature-controlling electric heating device |
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| Publication Number | Publication Date |
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| CN1925699A CN1925699A (en) | 2007-03-07 |
| CN1925699B true CN1925699B (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100529519A Active CN1925699B (en) | 2006-11-02 | 2006-11-02 | Whole circuit temperature-controlling electric heating device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314183B (en) * | 2011-08-25 | 2014-11-05 | 桐乡市爱贝斯电暖科技有限公司 | Whole line temperature control circuit |
| CN104202843B (en) * | 2014-08-25 | 2015-12-09 | 董立珉 | A kind of heater for reflecting type ultrasonic anemometer |
| CN105137836B (en) * | 2015-08-11 | 2017-11-03 | 宁波康虹电器有限公司 | A kind of controller |
| CN112543517A (en) * | 2020-12-22 | 2021-03-23 | 新乐市慕兰电器有限公司 | Full-line temperature control electric heating device and equipment based on carbon fiber heating |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101421U (en) * | 1991-10-10 | 1992-04-15 | 刘家海 | Electronic temp. control electrothermal mattress (blanket) |
| CN2131381Y (en) * | 1992-06-30 | 1993-05-05 | 成都市电热器厂 | Full-line type temperature-controlling electric heating blanket |
| CN2318787Y (en) * | 1997-11-27 | 1999-05-12 | 玄哲雄 | Multifunction temp. controller for electric blanket |
| CN2453786Y (en) * | 2000-11-15 | 2001-10-17 | 成都彩虹电器（集团）股份有限公司 | Controller for electric-heated blanket |
| CN2473657Y (en) * | 2001-02-09 | 2002-01-23 | 张雨田 | Multifunction temperature cotnrol switch for electric heating blanket |
| CN2938675Y (en) * | 2006-08-10 | 2007-08-22 | 李木水 | Whole line temp. control electric heater |
-
2006
- 2006-11-02 CN CN2006100529519A patent/CN1925699B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2101421U (en) * | 1991-10-10 | 1992-04-15 | 刘家海 | Electronic temp. control electrothermal mattress (blanket) |
| CN2131381Y (en) * | 1992-06-30 | 1993-05-05 | 成都市电热器厂 | Full-line type temperature-controlling electric heating blanket |
| CN2318787Y (en) * | 1997-11-27 | 1999-05-12 | 玄哲雄 | Multifunction temp. controller for electric blanket |
| CN2453786Y (en) * | 2000-11-15 | 2001-10-17 | 成都彩虹电器（集团）股份有限公司 | Controller for electric-heated blanket |
| CN2473657Y (en) * | 2001-02-09 | 2002-01-23 | 张雨田 | Multifunction temperature cotnrol switch for electric heating blanket |
| CN2938675Y (en) * | 2006-08-10 | 2007-08-22 | 李木水 | Whole line temp. control electric heater |
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| CN1925699A (en) | 2007-03-07 |
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