CN201302954Y - Power-saving device for alternating current contactor - Google Patents
Power-saving device for alternating current contactor Download PDFInfo
- Publication number
- CN201302954Y CN201302954Y CNU2008203029798U CN200820302979U CN201302954Y CN 201302954 Y CN201302954 Y CN 201302954Y CN U2008203029798 U CNU2008203029798 U CN U2008203029798U CN 200820302979 U CN200820302979 U CN 200820302979U CN 201302954 Y CN201302954 Y CN 201302954Y
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- circuit
- rectifier
- power
- voltage
- saving device
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Abstract
The utility model relates to a power-saving device, in particular to a power-saving device for alternating current contactor, resolving the current technical problems that alternating current contactors have power waste phenomenon, noises and short service life. The main points of the technical proposal are that the power-saving device for alternating current contactor comprises an alternating current power circuit, a high-voltage rectification circuit, a low-voltage rectification circuit and a limiting circuit; the high-voltage rectification circuit is connected with the low-voltage rectification circuit through the limiting circuit and also connected with the alternating current power circuit through a normally-closed contact of an alternating current contactor; the low-voltage rectification circuit is connected with the alternating current power circuit; and the voltage of the high-voltage rectification circuit is far higher than that of the low-voltage rectification circuit. The power-saving device for alternating current contactor can reduce running power consumption of the alternating current contactor, eliminate noises, and extend service life, and is adaptable to alternating current contactors.
Description
Technical field
The utility model relates to a kind of energy saver, relates to a kind of energy saver that is applied on the A.C. contactor specifically.
Background technology
The electric equipment control of present national every profession and trade all is to adopt A.C. contactor to realize basically.The application of A.C. contactor is very extensive, divide from the A.C. contactor starting resistor, the A.C. contactor of 220V and two electric pressures of 380V uses at most, and these two kinds of A.C. contactors all are to adopt alternating voltage directly to start and operation, and it starts and working voltage all is rated voltages.In fact, when A.C. contactor starts, requirement tractive effort is big, adopt rated voltage can guarantee normal startup, but when moving, it has not just needed so big tractive effort, continuation operation under rated voltage can cause the coil excessive heating of A.C. contactor, consumes unnecessary power consumption, and has shortened its useful life; Moreover owing to start and alternating current is all adopted in operation, electric current is wanted zero crossing, and iron core vibrates easily being stained with under the situation of dust, makes a noise.Based on more than, a kind of energy saver need to occur and solve these problems, such energy saver does not appear in the market as yet.
The utility model content
Technical problem to be solved in the utility model is: at the deficiencies in the prior art, propose a kind of alternating-current contactor energy-saving device, solve the problem that A.C. contactor of the prior art wasted energy, went out easily noise and lacks useful life.
The technical scheme in the invention for solving the above technical problem is: the alternating-current contactor energy-saving device comprises AC power circuit, high-voltage rectifier, lower pressure rectifier circuit and limit circuit; Described high-voltage rectifier is connected with the lower pressure rectifier circuit through limit circuit; Described high-voltage rectifier is connected with AC power circuit through A.C. contactor normally-closed contact switch; Described lower pressure rectifier circuit is connected with AC power circuit; Described high-voltage rectifier voltage is far above the lower pressure rectifier circuit voltage.
Described AC power circuit comprises transformer, and transformer connects AC power.
Described high-voltage rectifier comprises first rectifier, and the lower pressure rectifier circuit comprises second rectifier, and limit circuit comprises diode; The anode of described diode connects the direct current output cathode of second rectifier, and the negative electrode of diode connects the direct current output cathode of first rectifier, and the direct current output negative pole of first rectifier links to each other with the direct current output negative pole of second rectifier.
This alternating-current contactor energy-saving device also comprises filter circuit and freewheeling circuit; Described filter circuit, freewheeling circuit are all in parallel with first rectifier.
Described filter circuit is a filter capacitor, and described freewheeling circuit is a fly-wheel diode.
The beneficial effects of the utility model are: reduce the power consumption of A.C. contactor operation, abate the noise, prolong its useful life.
Description of drawings
Fig. 1 is the circuit structure diagram of embodiment.
Among the figure, B1 is a transformer, and B2 is an ac contactor coil, and D1 is second rectifier, and D2 is first rectifier, and D3 is a diode, and D4 is a fly-wheel diode, and C is a filter capacitor, and K is an A.C. contactor normally-closed contact switch.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Inventive point of the present utility model is, at the A.C. contactor of the prior art deficiency that power consumption greatly, easily makes a noise and useful life is short that is in operation, proposes a kind of novel alternating-current contactor energy-saving device and overcomes these problems.
Alternating-current contactor energy-saving device in the utility model comprises AC power circuit, high-voltage rectifier, lower pressure rectifier circuit and limit circuit; Described high-voltage rectifier is connected with the lower pressure rectifier circuit through limit circuit; Described high-voltage rectifier is connected with AC power circuit through A.C. contactor normally-closed contact switch; Described lower pressure rectifier circuit is connected with AC power circuit; Described high-voltage rectifier voltage is far above the lower pressure rectifier circuit voltage.
Embodiment:
As shown in Figure 1, the AC power circuit in this example adopts transformer B1 to link to each other with the 220V AC power by L end, N end; High-voltage rectifier adopts the first rectifier D2; The lower pressure rectifier circuit adopts the second rectifier D1; Limit circuit adopts diode D3; Whole alternating-current contactor energy-saving device annexation is: the first rectifier D2 connects transformer B1 by A.C. contactor normally-closed contact K switch, the second rectifier D1 connects transformer B1, the anode of diode D3 connects the direct current output cathode of the second rectifier D1, the negative electrode of diode D3 connects the direct current output cathode of the first rectifier D2, the direct current output negative pole of the first rectifier D2 links to each other with the direct current output negative pole of the second rectifier D1, and filter capacitor C, sustained diode 4 are all in parallel with the first rectifier D2.
Its operation principle is: transformer carries out the two-way dividing potential drop to the 220V AC power, and one the tunnel for the Va starting resistor is a high pressure described in the utility model, is advisable with 150V-220V, and one the tunnel for the Vb working voltage is a low pressure described in the utility model, is advisable with 5V-16V.After energy saver starts, the Va starting resistor becomes the direct current starting resistor after A.C. contactor normally-closed contact K switch is again through the first rectifier D2 rectification, the Vb working voltage is also through becoming DC operation voltage after the second rectifier D1 rectification simultaneously, but this moment, the direct current starting resistor was far above DC operation voltage, make the diode D3 can not conducting, DC operation voltage be inoperative; Under the effect of direct current starting resistor, the slowly adhesive of the iron core of A.C. contactor, after adhesive puts in place, A.C. contactor normally-closed contact K switch disconnects, this moment, the direct current starting resistor disconnected, that is the direct current starting resistor is lower than DC operation voltage, and diode D3 conducting makes the A.C. contactor iron core keep adhesive under the effect of DC operation voltage.Filter capacitor C plays filter action after the rectification, and sustained diode 4 plays and discharges ac contactor coil B2 energy to protect the effect of this device.
Based on above-mentioned, device of the present utility model as can be seen is to adopt the principle of " high direct voltage starts, the dc low-voltage operation " to make A.C. contactor work, ac high-voltage always with respect to prior art starts and operation, greatly reduce power consumption,, can save power consumption more than 98% according to test comparison; Because the power supply of A.C. contactor iron core comes from the direct voltage after the rectification, circuit can zero crossing, so iron core can not make a noise; Owing to greatly reduce the power consumption of A.C. contactor, avoided its excessive heating, and then improved its useful life.
Because A.C. contactor of the prior art is varied; the claimed device that is not limited only to embodiment of the utility model; those skilled in the art is easy to change the beneficial effect that reaches same slightly according to description of the present utility model, and it all belongs to protection range of the present utility model.
Claims (5)
1. the alternating-current contactor energy-saving device is characterized in that: comprise AC power circuit, high-voltage rectifier, lower pressure rectifier circuit and limit circuit; Described high-voltage rectifier is connected with the lower pressure rectifier circuit through limit circuit; Described high-voltage rectifier is connected with AC power circuit through A.C. contactor normally-closed contact switch; Described lower pressure rectifier circuit is connected with AC power circuit; Described high-voltage rectifier voltage is far above the lower pressure rectifier circuit voltage.
2. alternating-current contactor energy-saving device as claimed in claim 1 is characterized in that: described AC power circuit comprises transformer, and transformer connects AC power.
3. alternating-current contactor energy-saving device as claimed in claim 1 or 2 is characterized in that: described high-voltage rectifier comprises first rectifier, and the lower pressure rectifier circuit comprises second rectifier, and limit circuit comprises diode; The anode of described diode connects the direct current output cathode of second rectifier, and the negative electrode of diode connects the direct current output cathode of first rectifier, and the direct current output negative pole of first rectifier links to each other with the direct current output negative pole of second rectifier.
4. alternating-current contactor energy-saving device as claimed in claim 3 is characterized in that: this alternating-current contactor energy-saving device also comprises filter circuit and freewheeling circuit; Described filter circuit, freewheeling circuit are all in parallel with first rectifier.
5. alternating-current contactor energy-saving device as claimed in claim 4 is characterized in that: described filter circuit is a filter capacitor, and described freewheeling circuit is a fly-wheel diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203029798U CN201302954Y (en) | 2008-11-28 | 2008-11-28 | Power-saving device for alternating current contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203029798U CN201302954Y (en) | 2008-11-28 | 2008-11-28 | Power-saving device for alternating current contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201302954Y true CN201302954Y (en) | 2009-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203029798U Expired - Fee Related CN201302954Y (en) | 2008-11-28 | 2008-11-28 | Power-saving device for alternating current contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201302954Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052316A (en) * | 2014-05-28 | 2014-09-17 | 北京科锐云涌科技有限公司 | Automatic switching single-phase rectifier bridge series circuit |
| CN104576203A (en) * | 2014-12-04 | 2015-04-29 | 北京赛德高科铁道电气科技有限责任公司 | Power control circuit for contactor |
| CN107768197A (en) * | 2017-12-06 | 2018-03-06 | 成都量之星科技有限公司 | A kind of metal cutting equipment A.C. contactor control system |
-
2008
- 2008-11-28 CN CNU2008203029798U patent/CN201302954Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052316A (en) * | 2014-05-28 | 2014-09-17 | 北京科锐云涌科技有限公司 | Automatic switching single-phase rectifier bridge series circuit |
| CN104052316B (en) * | 2014-05-28 | 2017-02-15 | 北京科锐云涌科技有限公司 | Automatic switching single-phase rectifier bridge series circuit |
| CN104576203A (en) * | 2014-12-04 | 2015-04-29 | 北京赛德高科铁道电气科技有限责任公司 | Power control circuit for contactor |
| CN107768197A (en) * | 2017-12-06 | 2018-03-06 | 成都量之星科技有限公司 | A kind of metal cutting equipment A.C. contactor control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20121128 |