CN102611363A - Micro-power consumption starter of refrigeration compressor motor - Google Patents
Micro-power consumption starter of refrigeration compressor motor Download PDFInfo
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- CN102611363A CN102611363A CN2012100775951A CN201210077595A CN102611363A CN 102611363 A CN102611363 A CN 102611363A CN 2012100775951 A CN2012100775951 A CN 2012100775951A CN 201210077595 A CN201210077595 A CN 201210077595A CN 102611363 A CN102611363 A CN 102611363A
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Abstract
The invention discloses a micro-power consumption starter of a refrigeration compressor motor, which comprises a bidirectional thyristor, a rectifying bridge consisting of diodes, an NPN triode, resistors and a capacitor. When the refrigeration compressor motor is started, the capacitor is changed by an alternating-current power source, current flows through a base electrode of the triode, and after the triode is amplified, the bidirectional thyristor is conducted by means of triggering of current of a collector electrode, and current flows through a secondary winding of the refrigeration compressor motor. After the motor is started, the capacitor is charged, voltage at two ends of the capacitor gradually rises, the current of the base electrode of the triode gradually decreases to zero, current of a trigger electrode of the bidirectional thyristor disappears, the bidirectional thyristor losses gate driving signals to be turned off, and a motor secondary winding loop is disconnected. After starting of the starter is completed, the whole circuit is extremely small in power consumption, conveniently adjustable in starting time, free from PTC (positive temperature coefficient) thermistors, less in circuit components, stable and reliable in operation, high in consistency of performance, highly resistant to interference, low in production cost and the like.
Description
Technical field
The present invention relates to the starting device of a kind of refrigerant compressor with motor.
Background technology
The cooling compressor electric motor of refrigerator (containing refrigerator-freezer, down together) is a kind of monopole asynchronous motor, and generally comprise two windings: one is main winding, and one is auxiliary winding.Single-phase asynchronous motor is in when starting, and requiring has phase difference between electric current and the electric current in the auxiliary winding in the main winding, thus the generation starting torque.Auxiliary winding just provides such one and the dephased electric current of main winding current when electric motor starting; After starting is accomplished; Hope that generally the auxiliary winding loop can be broken off or only pass through a very little electric current; Can make the minimise power consumption in the auxiliary winding loop of motor when operate as normal like this, reach the purpose of electricity saving and energy saving.The circuit so generally can connect in the auxiliary winding loop; When starting, let the auxiliary winding loop pass through big electric current to help electric motor starting; Starting drops to minimum (perhaps breaking off the auxiliary winding loop) with the auxiliary winding loop current after accomplishing, and can realize that the circuit of such function just is called starting circuit.
The most frequently used starting circuit is exactly the PTC element at present.The PTC element is exactly the thermistor of a positive temperature coefficient, and its resistance value raises along with the rising of temperature.PTC element of series connection in motor auxiliary winding loop, when just starting, the temperature of PTC element is very low, and resistance is very little, so very big electric current can be flow through in motor auxiliary winding loop.Along with electric current generates heat on resistance, the temperature of PTC raises gradually, and resistance increases rapidly, and the auxiliary winding loop current reduces rapidly.After starting is accomplished, the electric current in auxiliary winding loop with regard to steady operation a less value, but this electric current at the power that consumes on the PTC usually about 3W.For this type of refrigerator household electrical appliance, its number of applications refrigerator compressor motor huge, that almost uninterruptedly worked long hours in 24 hours, the effect of consideration quantity and accumulated time, the electrical power that causes thus consumption is immeasurable.In addition, bidirectional triode thyristor gate pole control loop commonly used has been connected in series the PTC element equally, and after proceed-to-send, because the loss in gate pole loop, the power consumption in whole auxiliary winding loop can reach about 0.5W.
ZL200620067807.8 discloses a kind of energy-conservation PTC starter.The PTC element is connected with a bidirectional triode thyristor.The gate pole of bidirectional triode thyristor and a two-way trigger tube, resistance, electric capacity are formed one and are triggered the loop, bidirectional switch of being made up of bridge heap and triode of parallel connection on two-way trigger tube.Not conducting of bidirectional switch during starting, gate pole triggers the loop conducting, triggers the bidirectional triode thyristor conducting, makes electric motor starting.A charge circuit is arranged simultaneously, and when charging was accomplished, the bidirectional switch conducting triggered the loop bypass with gate pole, and bidirectional triode thyristor turn-offs.Though this energy-conservation PTC starter can be realized the starting of motor; After but starting is accomplished; The triode of charge circuit is in conducting state always; Conduction loss is bigger, though be enhanced than dual mode noted earlier, still can't realize little power consumption, also fail to reach the requirement of modern energy-saving product.The used components and parts of this energy-conservation PTC starter are more in addition, not only increased the cost of starter, also increased the probability that starter breaks down.
Summary of the invention
To above-mentioned existing deficiency, the objective of the invention is to have proposed a kind of simple in structure, little power consumption starter of reliable operation refrigeration compressor motor.
The object of the invention is realized through following technical scheme: little power consumption starter of refrigeration compressor motor
Comprise: bidirectional triode thyristor; By the rectifier bridge that four diodes are formed, an end of bidirectional triode thyristor links to each other with the auxiliary winding of motor, and the other end of bidirectional triode thyristor links to each other with the main winding of AC power, motor and a brachium pontis of rectifier bridge; The gate pole of bidirectional triode thyristor links to each other with another brachium pontis of rectifier bridge; A dc output end of rectifier bridge links to each other with an end of first resistance and an end of the 3rd resistance, and the other end of first resistance links to each other with an end of first electric capacity, and the other end of first electric capacity links to each other with the base stage of triode; Two ends parallel connection second resistance of first electric capacity; The other end of the 3rd resistance links to each other with the collector electrode of triode, and the emitter of triode links to each other with another dc output end of rectifier bridge, and described triode is a negative-positive-negative transistor.
Little power consumption starter of refrigeration compressor motor of the present invention does not need the PTC temperature-sensitive element, and components and parts are few, and circuit is simple, and cost is low, and is reliable, (less than 5 milliwatts) low in energy consumption of entire circuit.
Description of drawings
Fig. 1 is little power consumption starter sketch map of refrigeration compressor motor of the present invention.
MC is little power consumption starter of refrigeration compressor motor among the figure, and E1 is a communication power supply, and M is a refrigerator compressor motor, and La is the motor main winding, and Lb is the motor auxiliary winding.
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
With reference to Fig. 1, little power consumption starter of refrigeration compressor motor comprises bidirectional triode thyristor T1, by four diode D1; D2, D3, the rectifier bridge BR that D4 forms; The end of bidirectional triode thyristor T1 links to each other with the auxiliary winding Lb of motor; The other end of bidirectional triode thyristor T1 links to each other with the main winding La of AC power E1, motor and the brachium pontis of rectifier bridge BR, and the gate pole G of bidirectional triode thyristor T1 links to each other with another brachium pontis of rectifier bridge BR, and a dc output end of rectifier bridge links to each other with an end of first resistance R 1 and an end of the 3rd resistance R 3; The other end of first resistance R 1 links to each other with an end of first capacitor C 1; The other end of first capacitor C 1 links to each other with the base stage B of triode Q1, and the other end of two ends parallel connection second resistance R 2, the three resistance R 3 of first capacitor C 1 links to each other with the collector electrode C of triode Q1; The emitter E of triode Q1 links to each other with another dc output end of rectifier bridge BR, and described triode is a negative-positive-negative transistor.
Operation principle is following:
Voltage when beginning to start on first capacitor C 1 is zero, and when just powering on, electric current is through AC power, via the motor auxiliary winding; One end of bidirectional triode thyristor, to gate pole G, the brachium pontis of rectifier bridge BR, first resistance R 1; First capacitor C 1, transistor base, transistor emitter, the loop that another of rectifier bridge brachium pontis constitutes; Get back to AC power, the base current of this triode is also smaller, also is not enough to trigger the bidirectional triode thyristor conducting.Simultaneously, electric current is again from AC power, via the motor auxiliary winding; The bidirectional triode thyristor gate pole; To the bridge brachium pontis of rectifier bridge BR, the 3rd resistance, transistor collector; Transistor emitter; Arrive the loop of another brachium pontis formation of rectification, get back to AC power, the collector current of triode is base current
doubly (multiplication factor of triode); Bigger, be enough to trigger the bidirectional triode thyristor conducting.After the bidirectional triode thyristor conducting, electric current is just from AC power, via the motor auxiliary winding, and the end of bidirectional triode thyristor T1, AC power is got back in the loop that the other end of bidirectional triode thyristor T1 constitutes.Motor auxiliary winding loop stream is crossed bigger electric current, can drive electric motor starting.After a period of time, the voltage on first capacitor C 1 slowly rises, and when rising to when equating with the AC power crest voltage, just can't continue to have charged; At this moment, transistor base has only extremely small electric current, and this electric current is through AC power, via the motor auxiliary winding; The bidirectional triode thyristor gate pole, brachium pontis of rectifier bridge, first resistance R, 1, the second resistance R 2; To transistor base, again from transistor emitter, AC power is got back in loop that another brachium pontis of rectifier bridge constitutes.Because it is very big to be connected in parallel on second resistance R, 2 resistances at first capacitor C, 1 two ends; Can reach tens megaohms; So; The electric current that flows through the triode base stage is very small; Even through amplifying
doubly, the electric current that flows through transistor collector also is not enough to trigger the bidirectional triode thyristor conducting.So, the bidirectional triode thyristor reliable turn-off, opened a way in motor auxiliary winding loop.At this moment; Motor has started have been accomplished, and starting circuit is in the zero-power state basically, and unique power consumption is that second resistance R 2 that is connected in parallel on first capacitor C, 1 two ends produces; But the resistance of second resistance R 2 is very big; Reach tens megaohms, so the power that post consumption is accomplished in whole starting circuit starting is very little.If outage back compressor need be reset, then the electric charge on first capacitor C 1, can re-power again in one minute through 2 discharges of second resistance R, realizes actuating motor again.
Among the present invention, triode is as a current mode switch in circuit, and to flow through electric current bigger for transistor base during starting, the triode conducting, and it is open-minded to trigger bidirectional triode thyristor.After starting was accomplished, the transistor base electric current was almost nil, and triode ends, and bidirectional triode thyristor turn-offs.The components and parts that entire circuit adopted seldom can guarantee the reliable and stable of circuit well.
Characteristics of the present invention are ultralow stand-by power consumptions.After electric motor starting was accomplished, the power consumption of entire circuit had only the power consumption (resistance value of R2 very big, be generally tens megohms) of capacitor C 1 through resistance R 2 discharge generation, and the power that on R2, consumes is very little, less than 5 milliwatts, is zero-power basically.
Characteristics of the present invention are that the starting time is easy to adjust.Can regulate through two kinds of methods: first method realizes for the resistance value of regulating resistance R 1, increases R1, can prolong the starting time.Reduce R1 and can reduce the starting time; Second method is to change capacitor C 1 capacity, changes 1 charging interval of capacitor C, thus the ON time of control bidirectional triode thyristor.
Claims (1)
1. little power consumption starter of a refrigeration compressor motor; It is characterized in that: comprise bidirectional triode thyristor (T1), by four diodes (D1, D2; D3; D4) rectifier bridge of forming (BR), an end of bidirectional triode thyristor (T1) links to each other with the auxiliary winding (Lb) of motor, and the other end of bidirectional triode thyristor (T1) links to each other with the main winding (La) of AC power (E1), motor and a brachium pontis of rectifier bridge (BR); The gate pole (G) of bidirectional triode thyristor (T1) links to each other with another brachium pontis of rectifier bridge (BR); A dc output end of rectifier bridge links to each other with an end of first resistance (R1) and an end of the 3rd resistance (R3), and the other end of first resistance (R1) links to each other with an end of first electric capacity (C1), and the other end of first electric capacity (C1) links to each other with the base stage (B) of triode (Q1); Two ends parallel connection second resistance (R2) of first electric capacity (C1); The other end of the 3rd resistance (R3) links to each other with the collector electrode (C) of triode (Q1), and the emitter (E) of triode (Q1) links to each other with another dc output end of rectifier bridge (BR), and described triode is a negative-positive-negative transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100775951A CN102611363A (en) | 2012-03-22 | 2012-03-22 | Micro-power consumption starter of refrigeration compressor motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100775951A CN102611363A (en) | 2012-03-22 | 2012-03-22 | Micro-power consumption starter of refrigeration compressor motor |
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| CN102611363A true CN102611363A (en) | 2012-07-25 |
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| CN2012100775951A Pending CN102611363A (en) | 2012-03-22 | 2012-03-22 | Micro-power consumption starter of refrigeration compressor motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040169A (en) * | 2017-03-17 | 2017-08-11 | 深圳市振邦智能科技股份有限公司 | Electronic type idle resistance starter circuit |
| CN107086822A (en) * | 2017-05-26 | 2017-08-22 | 安徽美芝制冷设备有限公司 | Start control circuit, compressor assembly and the refrigeration plant of load motor |
| CN108712114A (en) * | 2018-07-24 | 2018-10-26 | 杭州星帅尔电器股份有限公司 | Intelligent motor starter and its control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451853A (en) * | 1992-12-05 | 1995-09-19 | Yamada Electric Mfg. Co., Ltd. | Starting device for a single phase induction motor |
| CN2768307Y (en) * | 2005-01-21 | 2006-03-29 | 常熟市天银机电有限公司 | Mutual inductance non-contacting starter |
| CN201039045Y (en) * | 2006-11-21 | 2008-03-19 | 万宝冷机集团广州电器有限公司 | Energy-saving PTC starter |
| CN101179245A (en) * | 2007-10-15 | 2008-05-14 | 刘惠玲 | Starter of AC motor |
| CN102075124A (en) * | 2011-01-14 | 2011-05-25 | 浙江大学 | Low power consumption starter of compressor motor of refrigerator |
-
2012
- 2012-03-22 CN CN2012100775951A patent/CN102611363A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451853A (en) * | 1992-12-05 | 1995-09-19 | Yamada Electric Mfg. Co., Ltd. | Starting device for a single phase induction motor |
| CN2768307Y (en) * | 2005-01-21 | 2006-03-29 | 常熟市天银机电有限公司 | Mutual inductance non-contacting starter |
| CN201039045Y (en) * | 2006-11-21 | 2008-03-19 | 万宝冷机集团广州电器有限公司 | Energy-saving PTC starter |
| CN101179245A (en) * | 2007-10-15 | 2008-05-14 | 刘惠玲 | Starter of AC motor |
| CN102075124A (en) * | 2011-01-14 | 2011-05-25 | 浙江大学 | Low power consumption starter of compressor motor of refrigerator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040169A (en) * | 2017-03-17 | 2017-08-11 | 深圳市振邦智能科技股份有限公司 | Electronic type idle resistance starter circuit |
| CN107086822A (en) * | 2017-05-26 | 2017-08-22 | 安徽美芝制冷设备有限公司 | Start control circuit, compressor assembly and the refrigeration plant of load motor |
| CN107086822B (en) * | 2017-05-26 | 2023-08-25 | 安徽美芝制冷设备有限公司 | Starting control circuit of single-phase alternating current motor, compressor system and refrigeration equipment |
| CN108712114A (en) * | 2018-07-24 | 2018-10-26 | 杭州星帅尔电器股份有限公司 | Intelligent motor starter and its control method |
| CN108712114B (en) * | 2018-07-24 | 2023-07-04 | 杭州星帅尔电器股份有限公司 | Intelligent motor starter and control method thereof |
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Application publication date: 20120725 |