CN200990025Y - Electric heating carpet temperature controller - Google Patents
Electric heating carpet temperature controller Download PDFInfo
- Publication number
- CN200990025Y CN200990025Y CN 200620063901 CN200620063901U CN200990025Y CN 200990025 Y CN200990025 Y CN 200990025Y CN 200620063901 CN200620063901 CN 200620063901 CN 200620063901 U CN200620063901 U CN 200620063901U CN 200990025 Y CN200990025 Y CN 200990025Y
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- circuit
- voltage
- heating
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- stabilivolt
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- 238000005485 electric heating Methods 0.000 title abstract 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 230000005669 field effect Effects 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000000087 stabilizing effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a heater blanket temperature control device comprising a voltage regulator circuit, a bleeder circuit, a voltage comparing circuit, a preferred voltage circuit, an electron switch and a heating element. At the same time of the heating of electric-heating wires RL, the resistance value of the temperature-sensing wire RF coiled with the electric-heating wires RL is changed, a comparing voltage is formed on the input end of the operation chip U1 of the voltage comparing circuit after the resistance value changed to larger and the voltage divided by the bleeder circuit. Compared with the voltage point of the preferred voltage circuit, the output end of the operation chip U1 of the voltage comparing circuit outputs the high electrical level or low electrical level to control the starting the field effect tube Q1 on the electron switch, and control the electric on-off of the electric-heating wires RL. The utility model is safer and more reliable in application due to working under the environment of low voltage.
Description
Technical field
The utility model relates to a kind of temperature control equipment, particularly relates to a kind of electric blanket temp.-sensing wire attemperating unit.
Background technology
Electric blanket in the past scarcely has the function of temperature control protection, the very fast rising of energising back temperature, and when temperature is too high, user's powered-down, temperature descends thereupon.Sometimes people have forgotten powered-down, cause causing the generation of fire, cause the personal injury and the heavy losses of property, bring serious threat for people's life.The manufacturer of some electric blanket has increased the temperature control circuit of may command heating wire break-make for addressing the above problem on the control circuit of electric blanket at present,, realize switch control functions.But the temperature control circuit of commonly using all adopts sensor (probe) to come sensing blanket body temperature degree and since sensor be arranged on the blanket body around, can only the sensing local temperature.When the blanket folded body, can cause blanket body local temperature to raise and phenomenon that sensor can't sense, security is relatively poor.
The utility model content
The electric blanket attemperating unit that provides a kind of use more safe and reliable is provided the purpose of this utility model.
For achieving the above object, technical solution of the present utility model is:
A kind of electric blanket attemperating unit, it mainly is made up of mu balanced circuit, bleeder circuit, voltage comparator circuit, reference voltage circuit, electronic switch and heating; The output terminal of described mu balanced circuit connects the input end of bleeder circuit, voltage comparator circuit, reference voltage circuit and heating; The output terminal of bleeder circuit and reference voltage circuit is connected two input ends of voltage comparator circuit respectively, and the output terminal of voltage comparator circuit and heating is connected electronic switch; Described heating comprises heating wire RL and temp.-sensing wire RF.
Described voltage comparator circuit mainly is made up of amplifier chip U1, stabilivolt D3, and stabilivolt D3 is connected 6 pin of amplifier chip U1; Described mu balanced circuit is made up of current-limiting resistance R1, stabilivolt D1 and capacitor C 1, and current-limiting resistance R1 is connected in series with stabilivolt D1 that is connected in parallel and capacitor C 1, is connected 7 pin of amplifier chip U1; Described bleeder circuit is made up of divider resistance R2, R3, R4, R5, R6, thermistor RT, divider resistance R2 or R3 or R4 or R5 or R6 and 2 pin that are connected amplifier chip U1 after thermistor RT connects; Described reference voltage circuit is made up of divider resistance R7, R8, stabilivolt D2, and divider resistance R7 is connected in series with the divider resistance R8 that is connected in parallel, stabilivolt D2, is connected 3 pin of amplifier chip U1; Described electronic switch mainly is made of field effect transistor Q1, and the source electrode of field effect transistor Q1 connects heating wire RL, grounded drain, forms heating wire RL heating circuit.
The utility model also comprises voltage buffer circuit, current rectifying and wave filtering circuit, Switching Power Supply, public frequency power transformer, DC filtering circuit; The output terminal of described voltage buffer circuit connects current rectifying and wave filtering circuit and public frequency power transformer, and current rectifying and wave filtering circuit connects Switching Power Supply, and Switching Power Supply connects heating; The output terminal of public frequency power transformer connects two input ends of rectification circuit D1-D4 bridge on the DC filtering circuit, and the output terminal of DC filtering circuit connects mu balanced circuit.
After adopting such scheme, when heating wire RL heats, variation on the resistance takes place with the temp.-sensing wire RF of the parallel coiling of heating wire RL, make its resistance become big after bleeder circuit carries out after the dividing potential drop and forms the input end that a comparative voltage is added in the amplifier chip U1 on the voltage comparator circuit, compare by electrical voltage point with reference voltage circuit, field effect transistor Q1 on the output terminal output high level of amplifier chip U1 on the voltage comparator circuit or the low level control electronic switch starts, and then energising or the outage of control heating wire RL.In addition, the utility model is to adopt the low-tension current of 12-36V as its power supply, this power supply be added in the blanket body heating wire RL and with the temp.-sensing wire RF of the parallel coiling of heating wire on, use safer, reliable.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model;
Fig. 2 is a circuit diagram of the present utility model;
Fig. 3 is the circuit block diagram that the utility model is applied to the electric blanket control circuit;
Fig. 4 is the circuit diagram that the utility model is applied to the electric blanket control circuit.
Embodiment
As shown in Figure 1 and Figure 2, the utility model is a kind of electric blanket attemperating unit; It mainly is made up of mu balanced circuit 1, bleeder circuit 2, voltage comparator circuit 3, reference voltage circuit 4, electronic switch 5 and heating 6.The output terminal of described mu balanced circuit 1 connects the input end of bleeder circuit 2, voltage comparator circuit 3, reference voltage circuit 4 and heating 6, provides stable power to foregoing circuit.The output terminal of described bleeder circuit 2 connects an input end of voltage comparator circuit 3 respectively.The output terminal of described reference voltage circuit 4 connects another input end of voltage comparator circuit 3, as the reference voltage point of voltage comparator circuit 3.The output terminal of voltage comparator circuit 3 and heating 6 is connected electronic switch 5, and electronic switch 5 is as the gauge tap of control heating 6 connecting and disconnecting of the circuit.Described heating 6 comprises heating wire RL and temp.-sensing wire RF, and temp.-sensing wire RF is wound on the heating wire RL.
Described voltage comparator circuit 3 mainly is made up of amplifier chip U1, stabilivolt D3.Stabilivolt D3 is connected 6 pin of amplifier chip U1.
Described mu balanced circuit 1 is made up of current-limiting resistance R1, stabilivolt D1 and capacitor C 1.Current-limiting resistance R1 is connected in series with stabilivolt D1 that is connected in parallel and capacitor C 1, is connected 7 pin of amplifier chip U1, provides a stable operating voltage to amplifier chip U1.
Described bleeder circuit 2 is made up of divider resistance R2, R3, R4, R5, R6, thermistor RT.Divider resistance R2 or R3 or R4 or R5 or R 6 and 2 pin that are connected amplifier chip U1 after thermistor RT connects.
Described reference voltage circuit 4 is made up of divider resistance R7, R8, stabilivolt D2.Divider resistance R7 is connected in series with the divider resistance R8 that is connected in parallel, stabilivolt D2, is connected 3 pin of amplifier chip U1.
Described electronic switch 5 mainly is made of field effect transistor Q1, and the source electrode of field effect transistor Q1 connects heating wire RL, grounded drain, forms heating wire RL heating circuit.
Principle of work of the present utility model:
The 12-36V DC voltage through after resistance R 1 current limliting again after stabilivolt D1 voltage stabilizing is sent to resistance R 2, R3, R4, R5, R6 and thermistor RT carry out dividing potential drop, be input to 2 pin of amplifier chip U1.Another road resistance R 1, stabilivolt D1 are input to 7 pin of amplifier chip U1, make it that operating voltage be arranged.Also one the tunnel again through resistance R 7 and R8 dividing potential drop after 3 pin of input amplifier chip U1 after the stabilivolt D2 voltage stabilizing, reference voltage point as amplifier chip U1 circuit, be used for carrying out voltage ratio with 2 pin of amplifier chip U1, and then control the high-low level output of amplifier chip U1 the 6th pin, control late-class circuit.
When energized, the temp.-sensing wire RF resistance in the thermistor RT is very low, and the 2 pin voltages of amplifier chip U1 are lower than 3 pin voltages, and 6 pin of amplifier chip U1 are output as high level.Through the laggard grid of going into field effect pipe Q1 of stabilivolt D3, make it that forward voltage be arranged.Positive supply forms the loop through heating wire RL to the source electrode of field effect pipe Q1 and heats to heating wire RL to the ground that drains.
When heating wire RL heats, its inner temp.-sensing wire RF is also in the variation that takes place on the resistance, make its resistance become big back and resistance R 2, R3, R4, R5, R6 carry out after the dividing potential drop and 3 pin of amplifier chip U1 compare, when the 2 pin voltages of amplifier chip U1 are higher than 3 pin, 6 pin of U1 are output as low level, make its field effect transistor Q1 grid be not activated voltage, make its heating wire RL not have loop voltage, quit work.
When temperature descends, temp.-sensing wire RF resistance diminishes back and resistance R 2, R3, R4, R5, R6 when carrying out voltage after partial less than the 3 pin voltages of amplifier chip U1, the 6 pin output of amplifier chip U1 is high level again, and field effect transistor Q1 starts working again, and heating wire RL begins heating again.
As shown in Figure 3, Figure 4, be that ac low-voltage power supply is used the utility model physical circuit block diagram and circuit diagram.It comprises voltage buffer circuit 1 ', current rectifying and wave filtering circuit 2 ', Switching Power Supply 3 ', public frequency power transformer 4 ', DC filtering circuit 5 ', mu balanced circuit 6 ', bleeder circuit 7 ', voltage comparator circuit 8 ', reference voltage circuit 9 ', electronic switch 10 ' and heating 20 '.Described heating 20 ' comprises heating wire RL and temp.-sensing wire RF.
The output terminal of voltage buffer circuit 1 ' connects current rectifying and wave filtering circuit 2 ' and public frequency power transformer 4 ', and current rectifying and wave filtering circuit 2 ' connects Switching Power Supply 3 ', and Switching Power Supply 3 ' connects heating wire RL; The output terminal of public frequency power transformer 4 ' connects two input ends that DC filtering circuit 5 ' is gone up rectification circuit D1-D4 bridge, the output terminal of DC filtering circuit 5 ' connects mu balanced circuit 6 ', the output terminal of described mu balanced circuit 6 ' connects the input end of bleeder circuit 7 ', voltage comparator circuit 8 ', reference voltage circuit 9 ' and heating wire RL, provides stable power to foregoing circuit.
The output terminal of described bleeder circuit 7 ' connects an input end of voltage comparator circuit 8 ' respectively.The output terminal of described reference voltage circuit 9 ' connects another input end of voltage comparator circuit 8 ', as the reference voltage point of voltage comparator circuit 8 '.Voltage comparator circuit 8 ' is connected electronic switch 10 ' with the output terminal of heating wire RL, and electronic switch 10 ' is as the gauge tap of control heating wire RL connecting and disconnecting of the circuit.
The principle of work of present embodiment and process:
The 220V alternating current after voltage dependent resistor (VDR) and rectification circuit D1-D4 rectification, is sent to late-class circuit through capacitor C 3 filtering after thermistor RT and FUSE buffering.Simultaneously another road by a public frequency power transformer 4 ' after rectification circuit D8-D11 rectification, again after capacitor C 7 filtering, through resistance R 7 is sent to after grade.After stabilivolt D12 voltage stabilizing, be sent to 7 pin of amplifier chip U1 and resistance R 8, R9, R10, R11, R12 through the voltage that resistance R 7 is sent here; Another road is carried out voltage stabilizing through resistance R 13 to stabilivolt D13, gives voltage reference point of 3 pin of amplifier chip U1.The resistance value of sensing by temp.-sensing wire RF then, thereby the voltage that changes 2 pin of amplifier chip U1 is controlled 6 pin of the amplifier chip U1 of discharge circuit, make its output high level and low level, control optocoupler IC2, and then also controlled the back level of optocoupler IC2, make it have resistance R 1 and R2 voltage after partial to be added to the control utmost point of field effect transistor Q1, and then also controlled the loop of AC power, the voltage after the rectification is charged to C4 through resistance R 3.When its voltage during greater than the voltage breakdown of thyristor D5, thyristor D5 punctures; Voltage is transported to the base stage of triode Q2 through thyristor D5, resistance R 5, make it have a forward voltage to allow its EC tie conducting, the positive voltage C that elementary and inductance L 2 enters into triode Q2 through capacitor C 5 and public frequency power transformer 4 ' extremely after from the E level to ground, go into the primary current loop.Make that its inductance L 2 and public frequency power transformer 4 ' are elementary an electric current, be coupled to secondary, make it that alternating voltage output be arranged through its high-frequency magnetic core.The voltage of inductance L 2 is coupled to inductance L 1, makes it that voltage turn-on transistor Q1 after resistance R 4 also be arranged, and makes voltage enter into the elementary of inductance L 2, transformer T1 through the CE of triode Q1 knot, after capacitor C 6 is coupled to ground, finishes the primary circuit.And then triode Q1 conducting arranged ... make that public frequency power transformer 4 ' is elementary all voltage output all the time, and then drive heating wire RL heating.
Heating wire RL makes the resistance of temp.-sensing wire change in heating process, make it become big and resistance R 8, R9, R10, R11, R12 carry out dividing potential drop, make the 2 pin voltages of amplifier chip U1 raise 3 pin of back and amplifier chip U1 compare control its 6 pin do not have export.Optocoupler IC2 is elementary not to have a voltage turn-on, and secondary do not have a conducting, does not have forward voltage on the triode Q1 and ends.Voltage does not have the loop through resistance R 3 to C4, makes it have no idea to make entire circuit have no idea to start to capacitor C 4 chargings, makes that its public frequency power transformer 4 ' is secondary not to have voltage to give heating wire RL heating, and then carries out temperature control.
Invention of the present utility model focuses on, in the blanket body of electric blanket or heating cushion, evenly lay heater continuously, this heater by heating wire RL and parallel outward dead ring thereof around temp.-sensing wire RF form, when heating wire RL heats, with the temp.-sensing wire RF of the parallel winding of heating wire RL variation on the resistance takes place.Its resistance becomes big after after bleeder circuit carries out dividing potential drop, form the input end that a comparative voltage is added in the amplifier chip U1 on the voltage comparator circuit, compare with the electrical voltage point of reference voltage circuit, field effect transistor Q1 on the output terminal output high level of amplifier chip U1 on the voltage comparator circuit or the low level control electronic switch starts, and then energising or the outage of control heating wire RL.In addition, the utility model is to adopt the low-tension current of 12-36V as its power supply, this power supply be added in the blanket body heating wire RL and with the temp.-sensing wire RF of the parallel coiling of heating wire on, use safer, reliable.
Claims (7)
1, a kind of electric blanket attemperating unit, it is characterized in that: it mainly is made up of mu balanced circuit, bleeder circuit, voltage comparator circuit, reference voltage circuit, electronic switch and heating; The output terminal of described mu balanced circuit connects the input end of bleeder circuit, voltage comparator circuit, reference voltage circuit and heating; The output terminal of bleeder circuit and reference voltage circuit is connected two input ends of voltage comparator circuit respectively, and the output terminal of voltage comparator circuit and heating is connected electronic switch; Described heating comprises heating wire RL and temp.-sensing wire RF.
2, electric blanket attemperating unit according to claim 1 is characterized in that: described voltage comparator circuit mainly is made up of amplifier chip U1, stabilivolt D3, and stabilivolt D3 is connected 6 pin of amplifier chip U1.
3, electric blanket attemperating unit according to claim 1, it is characterized in that: described mu balanced circuit is made up of current-limiting resistance R1, stabilivolt D1 and capacitor C 1, current-limiting resistance R1 is connected in series with stabilivolt D1 that is connected in parallel and capacitor C 1, is connected 7 pin of amplifier chip U1.
4, electric blanket attemperating unit according to claim 1, it is characterized in that: described bleeder circuit is made up of divider resistance R2, R3, R4, R5, R6, thermistor RT, divider resistance R2 or R3 or R4 or R5 or R6 and 2 pin that are connected amplifier chip U1 after thermistor RT connects.
5, electric blanket attemperating unit according to claim 1, it is characterized in that: described reference voltage circuit is made up of divider resistance R7, R8, stabilivolt D2, divider resistance R7 is connected in series with the divider resistance R8 that is connected in parallel, stabilivolt D2, is connected 3 pin of amplifier chip U1;
6, electric blanket attemperating unit according to claim 1, it is characterized in that: described electronic switch mainly is made of field effect transistor Q1, and the source electrode of field effect transistor Q1 connects heating wire RL, grounded drain, forms heating wire RL heating circuit.
7, electric blanket attemperating unit according to claim 1 is characterized in that: it also comprises voltage buffer circuit, current rectifying and wave filtering circuit, Switching Power Supply, public frequency power transformer, DC filtering circuit; The output terminal of described voltage buffer circuit connects current rectifying and wave filtering circuit and public frequency power transformer, and current rectifying and wave filtering circuit connects Switching Power Supply, and Switching Power Supply connects heating; The output terminal of public frequency power transformer connects two input ends of rectification circuit D1-D4 bridge on the DC filtering circuit, and the output terminal of DC filtering circuit connects mu balanced circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620063901 CN200990025Y (en) | 2006-09-07 | 2006-09-07 | Electric heating carpet temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620063901 CN200990025Y (en) | 2006-09-07 | 2006-09-07 | Electric heating carpet temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200990025Y true CN200990025Y (en) | 2007-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620063901 Expired - Fee Related CN200990025Y (en) | 2006-09-07 | 2006-09-07 | Electric heating carpet temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200990025Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692939A (en) * | 2011-03-25 | 2012-09-26 | 陈益敏 | Method for using electric rice cooker to make wine and control module thereof |
| CN106741030A (en) * | 2016-12-09 | 2017-05-31 | 陈彦羽 | A kind of syrup transport vehicle for the processing factory that refines sugar |
| CN107037267A (en) * | 2017-06-17 | 2017-08-11 | 丹凤县荣毅电子有限公司 | A kind of inductance detection device and detection method |
-
2006
- 2006-09-07 CN CN 200620063901 patent/CN200990025Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692939A (en) * | 2011-03-25 | 2012-09-26 | 陈益敏 | Method for using electric rice cooker to make wine and control module thereof |
| CN102692939B (en) * | 2011-03-25 | 2015-02-11 | 陈益敏 | Control device for using electric rice cooker to make wine |
| CN106741030A (en) * | 2016-12-09 | 2017-05-31 | 陈彦羽 | A kind of syrup transport vehicle for the processing factory that refines sugar |
| CN107037267A (en) * | 2017-06-17 | 2017-08-11 | 丹凤县荣毅电子有限公司 | A kind of inductance detection device and detection method |
| CN107037267B (en) * | 2017-06-17 | 2019-03-22 | 丹凤县荣毅电子有限公司 | A kind of inductance detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN YINGSHENG ELECTRONIC PRODUCTS CO., LTD. Free format text: FORMER OWNER: LI HEFA Effective date: 20100108 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20100108 Address after: Ting Shan village, Houjie Town, Houjie Town, Guangdong, Dongguan province 523000 Patentee after: Dongguan Yingsheng Electrical Products Co., Ltd. Address before: Guangdong province Houjie town of Dongguan City, Shan Ting Management District Dongguan Yingsheng electrical products Co. Ltd, zip code: 523940 Patentee before: Li Hefa |
|
| ASS | Succession or assignment of patent right |
Owner name: DONGGUAN WENLEKANG ELECTRIC BLACKET CO., LTD. Free format text: FORMER OWNER: DONGGUAN YINGSHENG ELECTRIC APPLIANCE PRODUCTS CO., LTD. Effective date: 20100629 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 523000 TINGSHAN NEW VILLAGE, HOUJIE TOWN, DONGGUAN CITY, GUANGDONG PROVINCETO: 523000 DONGGUAN WENLEKANG ELECTRONIC BLACKET CO., LTD.,JIANGJUN LING INDUSTRIAL DISTRICT, HOUJIE TOWN ONGGUAN CITY GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100629 Address after: Houjie town of Dongguan City, Guangdong province 523000 general Ling Industrial Zone Dongguan WARMLECOM electric blanket Co. Ltd. Patentee after: Dongguan Warmlecom Electric Blanket Co., Ltd. Address before: 523000, Ting Shan village, Houjie Town, Guangdong, Dongguan Patentee before: Dongguan Yingsheng Electrical Products Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071212 Termination date: 20110907 |