CN101917146A - Novel zero-power PTC starter for small refrigerating compressor - Google Patents
Novel zero-power PTC starter for small refrigerating compressor Download PDFInfo
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- CN101917146A CN101917146A CN 201010231817 CN201010231817A CN101917146A CN 101917146 A CN101917146 A CN 101917146A CN 201010231817 CN201010231817 CN 201010231817 CN 201010231817 A CN201010231817 A CN 201010231817A CN 101917146 A CN101917146 A CN 101917146A
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- compressor
- bidirectional triode
- triode thyristor
- temperature coefficient
- starter
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Abstract
The invention provides a novel zero-power PTC starter for a small refrigerating compressor. The novel zero-power PTC starter is provided with a PTC positive temperature coefficient thermistor which is connected to a loop of a motor secondary winding of the compressor in series, wherein a bidirectional triode thyristor is connected between the first end of the thermistor and the S end of the secondary winding in turn; and a normally open reed switch and the positive temperature coefficient thermistor Rt which are connected with each other in series are arranged between the control electrode of the bidirectional triode thyristor and an input zero line end of a power supply. In the invention, a starting current of a motor main winding of the refrigerating compressor serves as an exciting current of the normally open reed switch and a normally open contact of the reed switch is closed instantly when the motor is started; a trigger current is applied to the control electrode of the bidirectional triode thyristor through the thermistor Rt so that the bidirectional triode thyristor is electrified and then the motor of the compressor is started; and after the starting is finished, the contact of the reed switch is disconnected, the control current disappears from the control electrode, the thyristor is stopped and the current of the motor secondary winding is zero.
Description
Technical field
The present invention relates to be used for the starter of mini-type refrigeration compressor.
Background technology
Small-sized totally-enclosed refrigerating compressor does not need auxiliary winding to participate in work again after starting, and desirable state is that the auxiliary winding loop disconnects after compressor start, makes no longer consumed power of auxiliary winding.To this, solution commonly used at present is a serial connection PTC positive temperature coefficient thermistor in the auxiliary winding loop, it is minimum at the resistance in a flash of compressor start, when finishing starting and rapidly heating and make its resistance sharply increase, minimum by electric current, thereby after compressor start, the approximate auxiliary winding loop that disconnects.However, when compressor operating, in order to keep its temperature, continue to keep high value, the PTC positive temperature coefficient thermistor still needs to consume certain electric energy, about the about 3W of its numerical value, and long this accumulative total, waste of electric energy is also very considerable.
At present, a kind of starter is arranged also, also on the main winding loop, is connected in series current transformer on the basis of the above, with secondary coil be connected across the bidirectional triode thyristor control utmost point and with T1 that auxiliary winding S end is connected between, this triggering mode, it is easy to trigger, and closes still and has any problem.When compressor electric motor enters normal operation, still have the little electric current SCR control utmost point of flowing through in the secondary coil.Although the back-emf that is produced when in secondary coil, having a main winding starting current to change to normal running current, but the induced current under this back-emf effect is much smaller than normal when operation induced current of inducing of secondary coil, so still have a little electric current to flow through between the SCR control utmost point, cause and close not thoroughly, cause still having on the auxiliary winding electric current.Unless secondary coil can disconnect after triggering; Perhaps current transformer is made the instrument transformer that is complementary with different main winding starting currents.
Summary of the invention
Technical problem to be solved by this invention provides a kind of a kind of novel zero-power PTC starter that is used for mini-type refrigeration compressor.For this reason, the present invention is by the following technical solutions: it is provided with the PTC positive temperature coefficient thermistor that is connected on the compressor electric motor auxiliary winding loop, also be serially connected with bidirectional triode thyristor between the S of first end of described PTC positive temperature coefficient thermistor and auxiliary winding end, described starter also is added with the tongue tube open in usual and the positive temperature coefficient thermistor R of series connection between the control utmost point of bidirectional triode thyristor and power supply input zero line side
t, on the loop of compressor electric motor main winding, also be connected in series the magnet exciting coil of tongue tube open in usual.
For solving the problems of the technologies described above, the present invention also can be by the following technical solutions: it is provided with the bidirectional triode thyristor that is serially connected on the compressor electric motor auxiliary winding loop, and described starter also is added with the tongue tube open in usual and the positive temperature coefficient thermistor R of series connection between the control utmost point of bidirectional triode thyristor and power supply input zero line side
t, on the loop of compressor electric motor main winding, also be connected in series the magnet exciting coil of tongue tube open in usual.
Because adopt technical scheme of the present invention, the present invention utilizes the exciting current of the starting current of refrigeration compressor motor main winding as tongue tube open in usual, the moment when electric motor starting is with the normally opened contact closure of tongue tube, by thermistor R
tIn the control extremely of bidirectional triode thyristor, add a trigger current, thereby make the bidirectional triode thyristor conducting, realize the starting of compressor electric motor; Along with the end of starting process, the motor main winding current has become the little electric current of operation when normal by the big electric current in when starting, and the exciting current of tongue tube is corresponding to diminish, the contact of tongue tube disconnects, control electric current extremely out of hand, thereby controllable silicon is ended, motor auxiliary winding electrorheological zero.
The present invention with the controllable silicon triggering and conducting after, again can be in a short period of time with control extremely fully, disconnect up hill and dale, controllable silicon is fully ended, thereby realize auxiliary winding zero-power truly.The present invention is the same with the Weight type starter relay, and an attract current and a release current that is complementary with the main winding starting current is arranged, and the exciting current of tongue tube (making an electric current of the closing of contact) also must be complementary with the main winding starting current.Because the particularity of tongue tube, contact sensitivity is higher, does not have the problem of release current, so mate to get up more convenient.As in the two ends of magnet exciting coil parallel resistance, but splitter section main winding starting current, thus stabilization of excitation electric current is realized and the coupling of multiple main winding starting current.
Description of drawings
Fig. 1 is the circuit diagram of the embodiment of the invention 1.
Fig. 2 is the circuit diagram of the embodiment of the invention 2.
Fig. 3 is the circuit diagram of the embodiment of the invention 3.
Fig. 4 is the circuit diagram of the embodiment of the invention 4.
Embodiment
Embodiment 1, with reference to Fig. 1.
The present invention is provided with the PTC positive temperature coefficient thermistor 11 that is connected on the compressor electric motor 100 auxiliary winding loops, between the S of the first end 11-1 of described PTC positive temperature coefficient thermistor and auxiliary winding end, also be serially connected with bidirectional triode thyristor 12, the second end 11-2 of described PTC positive temperature coefficient thermistor 11 is connected with power supply input zero line side N, and described starter is also imported tongue tube RI open in usual and the positive temperature coefficient thermistor R that is added with series connection between zero line side N at the control utmost point 3 and the power supply of bidirectional triode thyristor
t, on the loop of compressor electric motor main winding, also be connected in series the magnet exciting coil 14 of tongue tube open in usual.The T1 utmost point of described bidirectional triode thyristor and the S of auxiliary winding end are connected, and the first end 11-1 of the T2 utmost point of described bidirectional triode thyristor and described PTC positive temperature coefficient thermistor is connected.
Described thermistor R
tAlso can be with common metalfilmresistor.
PTC positive temperature coefficient thermistor 11 can be the thermistor of ampere level, and described ampere level can be 1～12 ampere.Positive temperature coefficient thermistor R
tCan be milliampere thermistor of level, described milliampere of level can be 1 milliampere-100 milliamperes.
Embodiment 2
With reference to Fig. 2, at the two ends of magnet exciting coil parallel resistance R, other is identical with embodiment 1 on the basis of embodiment 1 for present embodiment, in Fig. 2, and the implication that the symbology identical with Fig. 1 is identical.
The present invention is provided with the bidirectional triode thyristor 12 that is serially connected on the compressor electric motor 100 auxiliary winding loops, and the T2 utmost point of bidirectional triode thyristor 12 is connected with power supply input zero line side N, and the S end of the T1 utmost point and auxiliary winding is connected.
Described starter is also imported tongue tube RI open in usual and the positive temperature coefficient thermistor R that is added with series connection between zero line side N at the control utmost point 3 and the power supply of bidirectional triode thyristor
t, on the loop of compressor electric motor main winding, also be connected in series the magnet exciting coil 14 of tongue tube open in usual.
Described thermistor R
tAlso can be with common metalfilmresistor.Positive temperature coefficient thermistor R
tCan be milliampere thermistor of level, described milliampere of level can be 1 milliampere-100 milliamperes.
Embodiment 4.With reference to Fig. 4
With reference to Fig. 4, at the two ends of magnet exciting coil parallel resistance R, other is identical with embodiment 3 on the basis of embodiment 3 for present embodiment, in Fig. 4, and the implication that the symbology identical with Fig. 3 is identical.
Claims (4)
1. a kind of novel zero-power PTC starter that is used for mini-type refrigeration compressor, be provided with the PTC positive temperature coefficient thermistor that is connected on the compressor electric motor auxiliary winding loop, between the S of first end of described PTC positive temperature coefficient thermistor and auxiliary winding end, also be serially connected with bidirectional triode thyristor, it is characterized in that described starter also is added with the tongue tube open in usual and the positive temperature coefficient thermistor R of series connection between the control utmost point of bidirectional triode thyristor and power supply input zero line side
t, on the loop of compressor electric motor main winding, also be connected in series the magnet exciting coil of tongue tube open in usual.
2. a kind of novel zero-power PTC starter that is used for mini-type refrigeration compressor as claimed in claim 1 is characterized in that at the two ends of magnet exciting coil also parallel resistance.
3. a kind of novel zero-power electronic starter that is used for mini-type refrigeration compressor, be provided with the bidirectional triode thyristor that is serially connected on the compressor electric motor auxiliary winding loop, it is characterized in that described starter also is added with the tongue tube open in usual and the positive temperature coefficient thermistor R of series connection between the control utmost point of bidirectional triode thyristor and power supply input zero line side
t, on the loop of compressor electric motor main winding, also be connected in series the magnet exciting coil of tongue tube open in usual.
4. a kind of novel zero-power electronic starter that is used for mini-type refrigeration compressor as claimed in claim 3 is characterized in that at the two ends of magnet exciting coil also parallel resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010231817 CN101917146A (en) | 2010-07-16 | 2010-07-16 | Novel zero-power PTC starter for small refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010231817 CN101917146A (en) | 2010-07-16 | 2010-07-16 | Novel zero-power PTC starter for small refrigerating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101917146A true CN101917146A (en) | 2010-12-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010231817 Pending CN101917146A (en) | 2010-07-16 | 2010-07-16 | Novel zero-power PTC starter for small refrigerating compressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441709A (en) * | 2013-09-10 | 2013-12-11 | 合肥美的电冰箱有限公司 | Start control system of compressor and refrigeration equipment with same |
| CN103503302A (en) * | 2011-02-25 | 2014-01-08 | 惠而浦股份公司 | Winding switching circuit and thermal protection for dual voltage hermetic induction motor of hermetic cooling compressor |
| CN108512535A (en) * | 2018-03-29 | 2018-09-07 | 华南理工大学 | The thyristor gating circuit compensated using posive temperature coefficient thermistor |
Citations (6)
| 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 |
| JP2004274896A (en) * | 2003-03-10 | 2004-09-30 | Texas Instr Japan Ltd | Motor starter |
| CN201191813Y (en) * | 2008-02-29 | 2009-02-04 | 杭州星帅尔电器有限公司 | Current type low consumption starter |
| CN101562416A (en) * | 2009-03-11 | 2009-10-21 | 何敦启 | Zero-power initiating relay |
| CN201450476U (en) * | 2009-07-27 | 2010-05-05 | 何敦启 | Simple energy-saving starter |
| CN201750383U (en) * | 2010-07-16 | 2011-02-16 | 杭州泛博电器有限公司 | Novel zero-power-consumption positive-temperature-coefficient (PTC) starter for small refrigerating compressor |
-
2010
- 2010-07-16 CN CN 201010231817 patent/CN101917146A/en active Pending
Patent Citations (6)
| 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 |
| JP2004274896A (en) * | 2003-03-10 | 2004-09-30 | Texas Instr Japan Ltd | Motor starter |
| CN201191813Y (en) * | 2008-02-29 | 2009-02-04 | 杭州星帅尔电器有限公司 | Current type low consumption starter |
| CN101562416A (en) * | 2009-03-11 | 2009-10-21 | 何敦启 | Zero-power initiating relay |
| CN201450476U (en) * | 2009-07-27 | 2010-05-05 | 何敦启 | Simple energy-saving starter |
| CN201750383U (en) * | 2010-07-16 | 2011-02-16 | 杭州泛博电器有限公司 | Novel zero-power-consumption positive-temperature-coefficient (PTC) starter for small refrigerating compressor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103503302A (en) * | 2011-02-25 | 2014-01-08 | 惠而浦股份公司 | Winding switching circuit and thermal protection for dual voltage hermetic induction motor of hermetic cooling compressor |
| CN103441709A (en) * | 2013-09-10 | 2013-12-11 | 合肥美的电冰箱有限公司 | Start control system of compressor and refrigeration equipment with same |
| CN108512535A (en) * | 2018-03-29 | 2018-09-07 | 华南理工大学 | The thyristor gating circuit compensated using posive temperature coefficient thermistor |
| CN108512535B (en) * | 2018-03-29 | 2022-01-18 | 华南理工大学 | Silicon controlled trigger circuit compensated by positive temperature coefficient thermistor |
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Owner name: WU GENGWU Free format text: FORMER OWNER: HANGZHOU FANBO ELECTRIC CO.,LTD Effective date: 20110823 |
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Free format text: CORRECT: ADDRESS; FROM: 311403 HANGZHOU, ZHEJIANG PROVINCE TO: 311421 HANGZHOU, ZHEJIANG PROVINCE |
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Effective date of registration: 20110823 Address after: 311421 Bayi village, Chun Jiang Street, Zhejiang, Fuyang Applicant after: Wu Gengwu Address before: 311403 Zhejiang province Fuyang City Fuchun Street Zhizhong Ting Cun Li Yuan Applicant before: Hangzhou Fanbo Electric Appliance Co., Ltd. |
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Application publication date: 20101215 |