CN201450311U - Temperature control circuit of motor - Google Patents
Temperature control circuit of motor Download PDFInfo
- Publication number
- CN201450311U CN201450311U CN2009200558915U CN200920055891U CN201450311U CN 201450311 U CN201450311 U CN 201450311U CN 2009200558915 U CN2009200558915 U CN 2009200558915U CN 200920055891 U CN200920055891 U CN 200920055891U CN 201450311 U CN201450311 U CN 201450311U
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- circuit
- resistance
- comparator
- temperature control
- electronic switch
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Abstract
The utility model discloses a temperature control circuit of a motor, which comprises a rectification and voltage regulation circuit, a temperature measuring circuit, a voltage comparing circuit and an electronic switch, wherein the voltage comparing circuit uses a hysteresis comparing circuit. The hysteresis comparing circuit can be used for controlling to switch off a motor work loop when the temperature of the hysteresis comparing circuit is higher than some temperature, and can automatically control to switch on the motor work loop when the temperature of the hysteresis comparing circuit is lower than another temperature. However the control is exact and perfect, and the work efficiency of the motor is improved.
Description
Technical field:
The utility model relates to a kind of motor temperature control circuit, belongs to the electronic temperature control technical field.
Background technology:
At present, the temperature detection controller that the thermostat of most motors all adopts bimetal leaf and contact to constitute, this mechanical temperature controller is simple in structure, but because it adopts bimetal leaf as temperature control element, sensitivity is low, error by controlling temperature is bigger, owing to have the switching contact, can produce arc spark when therefore moving, useful life is short, service time is of a specified duration, the temperature control phenomenon can occur.In some high-end motor products, the complex structure of temperature control circuit, price is expensive, is difficult to satisfy the client and can reaches function admirable for motor product, can keep requirement with low cost again.
Some simple electronic temperature control circuit have appearred in recent years, its cost is low, simple in structure, a kind of temperature control circuit is disclosed as documents CN200620010482.X, its structure comprises temperature measurement circuit, voltage comparator circuit and electronic switch, it adopts common comparator, critical temperature benchmark as a comparison only is set, just disconnect the machine operation loop in case be higher than critical temperature, need hand-reset motor work loop after temperature reduces, control is inconvenient and do not meet the real work situation of modern electrical machine, and strong power part and weak current part are not kept apart in addition, interference that temperature control circuit is subjected to and impact are bigger, damage easily.
Summary of the invention:
The purpose of this utility model provides a kind of motor temperature control circuit, its function admirable, adopt the chain rate that stagnates than circuit, can when being higher than some temperature, disconnect the machine operation loop, auto-closing machine operation loop when being lower than another temperature, control comparatively accurately perfectly, improved the operating efficiency of motor.
The utility model is to realize by following technical scheme:
A kind of motor temperature control circuit, comprise regulator rectifier circuit, temperature measurement circuit, voltage comparator circuit and electronic switch, regulator rectifier circuit provides power supply for temperature measurement circuit, voltage comparator circuit, electronic switch series electric motor winding incoming transport power supply, temperature measurement circuit detected temperatures signal is input to voltage comparator circuit and handles, the break-make of voltage comparator circuit control electronic switch is characterized in that: voltage comparator circuit adopts the chain rate that stagnates than circuit.
Above-mentioned described temperature measurement circuit is formed bridge circuit by four resistance R 2, R3, R4, R5, and resistance R 5 is thermistors.
Above-mentioned described stagnant chain rate comprises prime comparator IC1 than circuit, resistance R 6, R7 and back level comparator IC2, the negative input pin of prime comparator IC1 is connected the contact between resistance R 2 and the thermistor R5, the positive input pin is connected the contact between resistance R 4 and the resistance R 3, be in series with a resistance R 7 between prime comparator IC1 output pin and the positive input pin, the positive input pin of back level comparator IC2 is connected with prime comparator IC1 output pin, the negative input pin of back level comparator IC2 is connected series resistance R6 between the output of regulator rectifier circuit and the prime comparator IC1 output pin with the positive input pin of prime comparator IC1.
Above-mentioned described stagnant chain rate be than can establishing the photoelectricity coupling circuit between circuit and the electronic switch, and the photoelectricity coupling circuit comprises photoelectrical coupler U1 and resistance R 9, R10.
Above-mentioned described thermistor R5 is the PTC thermistor.
Above-mentioned described electronic switch is bidirectional triode thyristor BCR.
The utility model compared with prior art has following advantage: 1) adopt the chain rate that stagnates than circuit and contactless bidirectional triode thyristor, can when being higher than some temperature, disconnect the machine operation loop, auto-closing machine operation loop when being lower than another temperature, control is comparatively accurately improved stable, improved the operating efficiency of motor, very easy to use; 2) use PTC thermistor and bidirectional triode thyristor BCR, highly sensitive, reduced controlled temperature error, simultaneously contactless, do not produce arc spark, avoided the generation of temperature control phenomenon, prolonged the useful life of temperature control circuit; 3) adopt photoelectrical coupler that strong power part and weak current part are kept apart, reduced interference and impact that temperature control circuit is subjected to greatly.
Description of drawings:
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment:
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
As shown in Figure 1, a kind of motor temperature control circuit, comprise regulator rectifier circuit, temperature measurement circuit, the chain rate that stagnates is than circuit and electronic switch, the input of regulator rectifier circuit inserts the 220V AC power, the output of regulator rectifier circuit is a temperature measurement circuit, the chain rate that stagnates provides DC power supply than circuit, temperature measurement circuit detected temperatures signal is input to the chain rate that stagnates than processing of circuit, between stagnant chain rate is than circuit and electronic switch, the photoelectricity coupling circuit can also be set, the chain rate that stagnates inserts the 220V AC power than the break-make of circuit by photoelectricity coupling circuit drive controlling electronic switch behind the electronic switch series electric motor winding.
As shown in Figure 2, regulator rectifier circuit comprises diode D1, resistance R 1, fuse VR, voltage-stabiliser tube ZD1 and capacitor C 1, C2.Temperature measurement circuit adopts the bridge circuit structure of being made up of resistance R 2, R3, R4, thermistor R5, thermistor R5 is the PTC semistor, insert the output of regulator rectifier circuit after resistance R 2 is connected with thermistor R5, resistance R 4 is connected with resistance R 3 and is inserted the output of regulator rectifier circuit.The chain rate that stagnates comprises prime comparator IC1 than circuit, resistance R 6, R7 and back level comparator IC2, the negative input pin of prime comparator IC1 is connected the contact between resistance R 2 and the thermistor R5, the positive input pin is connected the contact between resistance R 4 and the resistance R 3, be in series with a resistance R 7 between prime comparator IC1 output pin and the positive input pin, the positive input pin of back level comparator IC2 is connected with prime comparator IC1 output pin, the negative input pin of back level comparator IC2 is connected series resistance R6 between the output of regulator rectifier circuit and the prime comparator IC1 output pin with the positive input pin of prime comparator IC1.Between stagnant chain rate is than circuit and electronic switch, be provided with the photoelectricity coupling circuit, the photoelectricity coupling circuit comprises photoelectrical coupler U1 and resistance R 9, R10, electronic switch is bidirectional triode thyristor BCR, back level comparator IC2 output pin is connected to the control end of bidirectional triode thyristor BCR by the photoelectricity coupling circuit, and bidirectional triode thyristor BCR and motor windings are together in series.
The stagnant chain rate that the utility model adopts has two input signals than circuit, one is from the detected voltage input signal of temperature measurement circuit, another is predefined voltage input signal, the chain rate that stagnates is handled above two voltage input signals than circuit, can when being higher than some temperature, control and disconnect the machine operation loop, the automatic closed machine operation of control loop when being lower than another temperature is controlled comparatively accurately perfectly, has improved the operating efficiency of motor.
Claims (6)
1. motor temperature control circuit, comprise regulator rectifier circuit, temperature measurement circuit, voltage comparator circuit and electronic switch, regulator rectifier circuit provides power supply for temperature measurement circuit, voltage comparator circuit, electronic switch series electric motor winding incoming transport power supply, temperature measurement circuit detected temperatures signal is input to voltage comparator circuit and handles, the break-make of voltage comparator circuit control electronic switch is characterized in that: voltage comparator circuit adopts the chain rate that stagnates than circuit.
2. a kind of motor temperature control circuit according to claim 1 is characterized in that: temperature measurement circuit is formed bridge circuit by four resistance R 2, R3, R4, R5, and resistance R 5 is thermistors.
3. a kind of motor temperature control circuit according to claim 1 and 2, it is characterized in that: the chain rate that stagnates comprises prime comparator IC1 than circuit, resistance R 6, R7 and back level comparator IC2, the negative input pin of prime comparator IC1 is connected the contact between resistance R 2 and the thermistor R5, the positive input pin is connected the contact between resistance R 4 and the resistance R 3, be in series with a resistance R 7 between prime comparator IC1 output pin and the positive input pin, the positive input pin of back level comparator IC2 is connected with prime comparator IC1 output pin, the negative input pin of back level comparator IC2 is connected series resistance R6 between the output of regulator rectifier circuit and the prime comparator IC1 output pin with the positive input pin of prime comparator IC1.
4. a kind of motor temperature control circuit according to claim 1 and 2 is characterized in that: can establish the photoelectricity coupling circuit between stagnant chain rate is than circuit and electronic switch, the photoelectricity coupling circuit comprises photoelectrical coupler U1 and resistance R 9, R10.
5. a kind of motor temperature control circuit according to claim 2 is characterized in that: thermistor R5 is the PTC thermistor.
6. a kind of motor temperature control circuit according to claim 1 and 2 is characterized in that: electronic switch is bidirectional triode thyristor BCR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200558915U CN201450311U (en) | 2009-04-28 | 2009-04-28 | Temperature control circuit of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200558915U CN201450311U (en) | 2009-04-28 | 2009-04-28 | Temperature control circuit of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201450311U true CN201450311U (en) | 2010-05-05 |
Family
ID=42555034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200558915U Expired - Lifetime CN201450311U (en) | 2009-04-28 | 2009-04-28 | Temperature control circuit of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201450311U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882849A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Electric equipment and low voltage cut-off circuit thereof |
| CN106059205A (en) * | 2016-06-27 | 2016-10-26 | 泰州市姜堰德力电机有限公司 | Motor with overcurrent protection device |
| CN106304423A (en) * | 2016-09-26 | 2017-01-04 | 苏州朗高电机有限公司 | A kind of annular aluminum component heater dress |
| CN107465170A (en) * | 2017-08-22 | 2017-12-12 | 杭州星帅尔电器股份有限公司 | A kind of electronic protector and its guard method |
| CN108725205A (en) * | 2018-07-28 | 2018-11-02 | 朱景艳 | The electric vehicle charging control circuit of relay modified overheating protection |
| CN110794896A (en) * | 2019-10-31 | 2020-02-14 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
-
2009
- 2009-04-28 CN CN2009200558915U patent/CN201450311U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882849A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Electric equipment and low voltage cut-off circuit thereof |
| CN104882849B (en) * | 2014-02-28 | 2019-02-05 | 北京谊安医疗系统股份有限公司 | Electrical equipment and its low pressure shutdown circuit |
| CN106059205A (en) * | 2016-06-27 | 2016-10-26 | 泰州市姜堰德力电机有限公司 | Motor with overcurrent protection device |
| CN106304423A (en) * | 2016-09-26 | 2017-01-04 | 苏州朗高电机有限公司 | A kind of annular aluminum component heater dress |
| CN107465170A (en) * | 2017-08-22 | 2017-12-12 | 杭州星帅尔电器股份有限公司 | A kind of electronic protector and its guard method |
| CN107465170B (en) * | 2017-08-22 | 2020-06-30 | 杭州星帅尔电器股份有限公司 | Electronic protector and protection method thereof |
| CN108725205A (en) * | 2018-07-28 | 2018-11-02 | 朱景艳 | The electric vehicle charging control circuit of relay modified overheating protection |
| CN110794896A (en) * | 2019-10-31 | 2020-02-14 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
| CN110794896B (en) * | 2019-10-31 | 2021-06-15 | 太原理工大学 | Temperature control heat preservation circuit based on water and ice conductivity difference |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100505 |