CN204462901U - A kind of electric blanket temperature control circuit - Google Patents
A kind of electric blanket temperature control circuit Download PDFInfo
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- CN204462901U CN204462901U CN201520152258.3U CN201520152258U CN204462901U CN 204462901 U CN204462901 U CN 204462901U CN 201520152258 U CN201520152258 U CN 201520152258U CN 204462901 U CN204462901 U CN 204462901U
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Abstract
The utility model discloses a kind of electric blanket temperature control circuit, comprise power circuit, heater circuit and temperature-control circuit, described power circuit comprises transformer W, filter capacitor C1 and rectifier bridge T, described heater circuit comprises relay J and heating wire A, and described temperature-control circuit comprises chip IC 1, thermistor R6, potentiometer RP1 and triode VT1.The utility model electric blanket temperature control circuit uses two voltage comparator CA211 respectively as temperature signal buffer stage and the delayed comparative degree of temperature signal, to critical value among a small circle in fluctuation temperature signal clamp down on, effectively can reduce the on-off times of electric blanket temperature detect switch (TDS), add the serviceable life of electric blanket, and circuit structure is simple, the components and parts used are cheap, effectively can save cost of manufacture.
Description
Technical field
The utility model relates to a kind of temperature-control circuit, specifically a kind of electric blanket temperature control circuit.
Background technology
Electric blanket is the warming articles for use that a lot of people like, on market, the temperature control element of most of electric blanket mostly is temperature detect switch (TDS), when temperature is lower than setting value, start heater block immediately, this mode just there will be unlatching repeatedly and shutoff under temperature is in the situation among a small circle around critical value, thus cause the aging of switchgear and heater element, greatly reduce the serviceable life of electric blanket.
Utility model content
It is simple that the purpose of this utility model is to provide a kind of structure, has the safety energy-saving electrical heating blanket of automatic constant-temperature and delay temperature control, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of electric blanket temperature control circuit, comprise power circuit, heater circuit and temperature-control circuit, described power circuit comprises transformer W, filter capacitor C1 and rectifier bridge T, described heater circuit comprises relay J and heating wire A, and described temperature-control circuit comprises chip IC 1, thermistor R6, potentiometer RP1 and triode VT1;
The two ends of described transformer W winding L 1 connect 220V line voltage respectively, one end of transformer W winding L 2 connects 4 ports of electric capacity C and rectifier bridge T, the other end of transformer W winding L 2 connects the other end of electric capacity C and 2 ports with rectifier bridge T, the 1 port contact resistance R1 of rectifier bridge T, resistance R11, the anode of diode D1, the contact J-1 of relay J and 4 pins of chip IC 2, the 3 port contact resistance R6 of rectifier bridge T, a stiff end of potentiometer RP3, the anode of diode D4, the collector of triode VT1 and heating wire A, the other end of the contact J-1 of relay J connects the other end of heating wire A, the negative electrode of diode D1 connects negative electrode and the relay J of diode D2, the other end of relay J connects the anode of diode D2 and the emitter of triode VT1, the base stage contact resistance R2 of triode VT1, the other end contact resistance R3 of resistance R2 and 3 negative electrodes of chip IC 1, the other end of resistance R1 connects the anode of diode D3, the plus earth of diode D3, 1 pin contact resistance R4 of chip IC 1, the other end of 2 pin contact resistance R3 of chip IC 1 and resistance R5, 3 pins of chip IC 1 connect power supply U1, 5 pin ground connection of chip IC 1, the other end of the other end contact resistance R6 of resistance R4, 1 pin of resistance R7 and chip IC 4, the other end of resistance R5 connects the sliding end of potentiometer RP2, a stiff end of potentiometer RP2 connects the sliding end of potentiometer RP3 and another stiff end of potentiometer RP3, another stiff end of potentiometer RP2 connects the stiff end of potentiometer RP1, another stiff end of potentiometer RP1 connects the sliding end of potentiometer RP1, 2 pins of chip IC 2 and 3 pins of chip IC 2, 1 pin contact resistance R9 of chip IC 2, the other end of resistance R11 and the negative electrode of diode D4, the other end contact resistance R10 of resistance R9 and 2 pins of chip IC 3, the other end of 1 pin contact resistance R7 of chip IC 3, 3 pins of resistance R8 and chip IC 3, 4 pins of chip IC 3 connect power supply U1, 5 pin ground connection of chip IC 3, the other end ground connection of resistance R8, the other end of resistance R10 connects 2 pins of chip IC 4 and 3 pins of chip IC 4, 4 pins of chip IC 4 connect power supply U1, 5 pin ground connection of chip IC 4.
As preferred version of the present utility model: described chip IC 1 ~ IC4 is CA211 type voltage comparator.
As preferred version of the present utility model: described power supply U1 is the DC voltage that 1 port of rectifier bridge T exports.
As preferred version of the present utility model: described thermistor R6 is negative tempperature coefficient thermistor.
As preferred version of the present utility model: 220V voltage is become 9V voltage by winding L 1 and the winding L 2 of described transformer W.
Compared with prior art, the beneficial effects of the utility model are: the utility model electric blanket temperature control circuit uses two voltage comparator CA211 respectively as temperature signal buffer stage and the delayed comparative degree of temperature signal, to critical value among a small circle in fluctuation temperature signal clamp down on, effectively can reduce the on-off times of electric blanket temperature detect switch (TDS), add the serviceable life of electric blanket, and circuit structure is simple, the components and parts of use are cheap, effectively can save cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of electric blanket temperature control circuit;
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of electric blanket temperature control circuit, comprise power circuit, heater circuit and temperature-control circuit, described power circuit comprises transformer W, filter capacitor C1 and rectifier bridge T, described heater circuit comprises relay J and heating wire A, and described temperature-control circuit comprises chip IC 1, thermistor R6, potentiometer RP1 and triode VT1;
The two ends of described transformer W winding L 1 connect 220V line voltage respectively, one end of transformer W winding L 2 connects 4 ports of electric capacity C and rectifier bridge T, the other end of transformer W winding L 2 connects the other end of electric capacity C and 2 ports with rectifier bridge T, the 1 port contact resistance R1 of rectifier bridge T, resistance R11, the anode of diode D1, the contact J-1 of relay J and 4 pins of chip IC 2, the 3 port contact resistance R6 of rectifier bridge T, a stiff end of potentiometer RP3, the anode of diode D4, the collector of triode VT1 and heating wire A, the other end of the contact J-1 of relay J connects the other end of heating wire A, the negative electrode of diode D1 connects negative electrode and the relay J of diode D2, the other end of relay J connects the anode of diode D2 and the emitter of triode VT1, the base stage contact resistance R2 of triode VT1, the other end contact resistance R3 of resistance R2 and 3 negative electrodes of chip IC 1, the other end of resistance R1 connects the anode of diode D3, the plus earth of diode D3, 1 pin contact resistance R4 of chip IC 1, the other end of 2 pin contact resistance R3 of chip IC 1 and resistance R5, 3 pins of chip IC 1 connect power supply U1, 5 pin ground connection of chip IC 1, the other end of the other end contact resistance R6 of resistance R4, 1 pin of resistance R7 and chip IC 4, the other end of resistance R5 connects the sliding end of potentiometer RP2, a stiff end of potentiometer RP2 connects the sliding end of potentiometer RP3 and another stiff end of potentiometer RP3, another stiff end of potentiometer RP2 connects the stiff end of potentiometer RP1, another stiff end of potentiometer RP1 connects the sliding end of potentiometer RP1, 2 pins of chip IC 2 and 3 pins of chip IC 2, 1 pin contact resistance R9 of chip IC 2, the other end of resistance R11 and the negative electrode of diode D4, the other end contact resistance R10 of resistance R9 and 2 pins of chip IC 3, the other end of 1 pin contact resistance R7 of chip IC 3, 3 pins of resistance R8 and chip IC 3, 4 pins of chip IC 3 connect power supply U1, 5 pin ground connection of chip IC 3, the other end ground connection of resistance R8, the other end of resistance R10 connects 2 pins of chip IC 4 and 3 pins of chip IC 4, 4 pins of chip IC 4 connect power supply U1, 5 pin ground connection of chip IC 4.
Chip IC 1 ~ IC4 is CA211 type voltage comparator.
Power supply U1 is the DC voltage that 1 port of rectifier bridge T exports.
Thermistor R6 is negative tempperature coefficient thermistor.
220V voltage is become 9V voltage by winding L 1 and the winding L 2 of transformer W.
Principle of work of the present utility model is: circuit access 220V line voltage, 220V line voltage is electric capacity C1 after filtering, stable 9V direct current is become after transformer W and rectifier bridge T, 9V direct current input circuit is powered to subsequent conditioning circuit, electric current passes through by chip IC 3, power to thermistor R6 after the constant-current source circuit of chip IC 4 and peripheral components composition thereof, the resistance of thermistor R6 raises with the reduction of temperature, thus affect the input voltage of chip IC 1 pin 1, when electric blanket peripheral temperature is lower, the resistance of thermistor R6 is higher than setting value, the input voltage of chip IC 1 is high level, chip IC 2 is temperature signal buffer stage, chip IC 3 is the delayed comparative degree of temperature signal, clamp down on feeding back by thermistor R6 the voltage signal come, relay J can not be worked immediately, prevent unlatching repeatedly and the shutoff of switch and heating wire, reduce the aging speed of components and parts, after only having environment temperature when electric blanket periphery lower than setting value a period of time, high level signal is exported by 3 pins of chip IC 1, drive triode VT1, make triode VT1 conducting, relay J conducting, the normally opened contact adhesive of relay J, heating wire A is energized work, start heating.Along with the rising of temperature, when environment temperature is higher than design temperature, the resistance of thermistor R6 reduces, 1 pin input voltage of chip IC 1 reduces, again according to the buffer action of chip IC 2, through stopping the heating to electric blanket after a period of time, circuit uses two voltage comparator CA211 respectively as temperature signal buffer stage and the delayed comparative degree of temperature signal, to critical value among a small circle in fluctuation temperature signal clamp down on, effectively can reduce the on-off times of electric blanket temperature detect switch (TDS), add the serviceable life of electric blanket, and circuit structure is simple, the components and parts used are cheap, effectively can save cost of manufacture.
Claims (5)
1. an electric blanket temperature control circuit, comprises power circuit, heater circuit and temperature-control circuit; It is characterized in that, described power circuit comprises transformer W, filter capacitor C1 and rectifier bridge T, and described heater circuit comprises relay J and heating wire A, and described temperature-control circuit comprises chip IC 1, thermistor R6, potentiometer RP1 and triode VT1;
The two ends of described transformer W winding L 1 connect 220V line voltage respectively, one end of transformer W winding L 2 connects 4 ports of electric capacity C and rectifier bridge T, the other end of transformer W winding L 2 connects the other end of electric capacity C and 2 ports with rectifier bridge T, the 1 port contact resistance R1 of rectifier bridge T, resistance R11, the anode of diode D1, the contact J-1 of relay J and 4 pins of chip IC 2, the 3 port contact resistance R6 of rectifier bridge T, a stiff end of potentiometer RP3, the anode of diode D4, the collector of triode VT1 and heating wire A, the other end of the contact J-1 of relay J connects the other end of heating wire A, the negative electrode of diode D1 connects negative electrode and the relay J of diode D2, the other end of relay J connects the anode of diode D2 and the emitter of triode VT1, the base stage contact resistance R2 of triode VT1, the other end contact resistance R3 of resistance R2 and 3 negative electrodes of chip IC 1, the other end of resistance R1 connects the anode of diode D3, the plus earth of diode D3, 1 pin contact resistance R4 of chip IC 1, the other end of 2 pin contact resistance R3 of chip IC 1 and resistance R5, 3 pins of chip IC 1 connect power supply U1, 5 pin ground connection of chip IC 1, the other end of the other end contact resistance R6 of resistance R4, 1 pin of resistance R7 and chip IC 4, the other end of resistance R5 connects the sliding end of potentiometer RP2, a stiff end of potentiometer RP2 connects the sliding end of potentiometer RP3 and another stiff end of potentiometer RP3, another stiff end of potentiometer RP2 connects the stiff end of potentiometer RP1, another stiff end of potentiometer RP1 connects the sliding end of potentiometer RP1, 2 pins of chip IC 2 and 3 pins of chip IC 2, 1 pin contact resistance R9 of chip IC 2, the other end of resistance R11 and the negative electrode of diode D4, the other end contact resistance R10 of resistance R9 and 2 pins of chip IC 3, the other end of 1 pin contact resistance R7 of chip IC 3, 3 pins of resistance R8 and chip IC 3, 4 pins of chip IC 3 connect power supply U1, 5 pin ground connection of chip IC 3, the other end ground connection of resistance R8, the other end of resistance R10 connects 2 pins of chip IC 4 and 3 pins of chip IC 4, 4 pins of chip IC 4 connect power supply U1, 5 pin ground connection of chip IC 4.
2. a kind of electric blanket temperature control circuit according to claim 1, is characterized in that, described chip IC 1 ~ IC4 is CA211 type voltage comparator.
3. a kind of electric blanket temperature control circuit according to claim 1, is characterized in that, described power supply U1 is the DC voltage that 1 port of rectifier bridge T exports.
4. a kind of electric blanket temperature control circuit according to claim 1, is characterized in that, described thermistor R6 is negative tempperature coefficient thermistor.
5. a kind of electric blanket temperature control circuit according to claim 1, is characterized in that, 220V voltage is become 9V voltage by winding L 1 and the winding L 2 of described transformer W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152258.3U CN204462901U (en) | 2015-03-18 | 2015-03-18 | A kind of electric blanket temperature control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520152258.3U CN204462901U (en) | 2015-03-18 | 2015-03-18 | A kind of electric blanket temperature control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204462901U true CN204462901U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520152258.3U Expired - Fee Related CN204462901U (en) | 2015-03-18 | 2015-03-18 | A kind of electric blanket temperature control circuit |
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| CN (1) | CN204462901U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152251A (en) * | 2016-08-15 | 2016-11-23 | 珠海格力电器股份有限公司 | gear control method, circuit and electric heater |
| CN106491021A (en) * | 2016-11-29 | 2017-03-15 | 廖婕 | A kind of domestic intelligent pedicure massage basin |
| CN112799448A (en) * | 2021-01-15 | 2021-05-14 | 赣州市正途科技有限公司 | Temperature control circuit based on artificial intelligence |
-
2015
- 2015-03-18 CN CN201520152258.3U patent/CN204462901U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152251A (en) * | 2016-08-15 | 2016-11-23 | 珠海格力电器股份有限公司 | gear control method, circuit and electric heater |
| CN106491021A (en) * | 2016-11-29 | 2017-03-15 | 廖婕 | A kind of domestic intelligent pedicure massage basin |
| CN112799448A (en) * | 2021-01-15 | 2021-05-14 | 赣州市正途科技有限公司 | Temperature control circuit based on artificial intelligence |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Yigen Inventor before: Xia Xuefei |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170105 Address after: 523876 Guangdong Province, Dongguan city Changan town Xiabian Jingfu Road No. 8 two floor Patentee after: Dongguan Han Yi Electronics Co., Ltd. Address before: 315700 Xiangshan City, Zhejiang province Dan City Industrial Park, like the mountains and rivers Road Patentee before: Xia Xuefei |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20180318 |