CN2548363Y - Automatic electric cloth vehicle electricity-saving device - Google Patents
Automatic electric cloth vehicle electricity-saving device Download PDFInfo
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- CN2548363Y CN2548363Y CN 02227309 CN02227309U CN2548363Y CN 2548363 Y CN2548363 Y CN 2548363Y CN 02227309 CN02227309 CN 02227309 CN 02227309 U CN02227309 U CN 02227309U CN 2548363 Y CN2548363 Y CN 2548363Y
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Abstract
The utility model relates to an electricity economizer technology field, in particular to an automatic electricity economizer for an electric sewing machine. The utility model overcomes the problems that no-load current of present electricity economizer for the sewing machine can be only set according to a matched motor when sent from a factory, therefore the motors with different types are all needed to be readjusted, thus present electricity economizer is unsuitable for matched use with the sewing machine motors with different types at the same time. The automatic electricity economizer for the electric sewing machine comprises a step-down rectifier circuit which provides a direct current working voltage, a synchronous trigger circuit which is connected to a control end of an SCR controlling amplifying circuit and the SCR which is serially connected to a power supply end with the motor, and sampling resistors R are serially connected to the SCR and to an earth terminal, and the sampling resistor R is provided with a sample storing amplifying circuit and a voltage comparing amplifying circuit, and an output end of the sample storing amplifying circuit is connected to the other input end of the voltage comparing amplifying circuit, and an output end of the voltage comparing amplifying circuit is connected to the control end of the SCR controlling amplifying circuit. The utility model has the advantages of convenient installation and being adjustment-free, which is suitable for use in flat sewing machine motors with different brands and types.
Description
Technical field
The utility model relates to a kind of electricity-saving appliance, particularly a kind of full-automatic electric sewing machine electricity-saving appliance.
Technical background
Existing electronic sewing machine which is provided with motor, and described motor is by the work of flying wheel drive transmission device.When energising started, motor not only will drive flying wheel work, but also wanted the drive transmission device motion, and starting current is very big.When carrying out sewing operation behind the electric motor starting, the operating current of motor is reduced to normal operating current.And when sewing operation stopped, motor was in Light Condition, be to keep the running of flying wheel, the motor electric current that need necessarily keep on the go, and when keeping next time sewing operation, motor can in time provide kinetic energy.Because in use, it is longer that electronic sewing machine is in time of shut-down operation, and it is longer that motor then is in the Light Condition operating time.This moment, motor produced loss to electric energy, for reducing loss, present domestic existing manufacturer production sewing machine electricity-saving appliance, its scheme of taking are to set constant sewing operation voltage that shuts down in circuit, make motor keep the minimum operating voltage of keeping the flying wheel running.But for the different motor of rated power, its starting current and no-load current are all different, and electric current is also bigger during the bigger empty load of motor of starting current, and electric current is also less during the little empty load of motor of starting current.So above-mentioned sewing machine electricity-saving appliance can only adapt to the sewing machine that sets, in case sewing machine difference, motor wherein just might be different, cause constant sewing operation set in the electricity-saving appliance voltage that shuts down to make that motor keeps on the go, the overtension that perhaps provides, the voltage that causes being added in the motor two ends is higher, produces waste of electric energy.In sum, existing sewing machine electricity-saving appliance, the no-load current value can only be set by supporting motor when dispatching from the factory, and the motor of different model all will be debugged again, can not be fit to the sewing machine electric drilling match use of various models simultaneously.
Summary of the invention
The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part and provides a kind of easy for installation, need not debugging, can regulate the full-automatic electric sewing machine electricity-saving appliance of power output automatically with zero load according to the work of sewing machine.
For realizing the purpose of this utility model, described full-automatic electric sewing machine electricity-saving appliance comprises the step-down rectifying circuit that direct-current working volts are provided, the synchronous trigger circuit that links to each other with the control end of SCR control amplifying circuit, with the controllable silicon SCR of motor joining at power end, be serially connected with sample resistance R in controllable silicon SCR and earth terminal, on sample resistance R, be connected to sampling and store amplifying circuit and voltage contrasting amplified circuit, the output of sampling storage amplifying circuit is connected to another input of voltage contrasting amplified circuit, the control end of the output termination SCR control amplifying circuit of voltage contrasting amplified circuit.Owing to adopted sampling to store amplifying circuit and voltage contrasting amplified circuit, when making electric motor starting, reference voltage in the time of can storing maximum current, with this reference voltage voltage as a comparison, regulation voltage is amplifying circuit relatively, makes motor in the time can driving flying wheel unloaded, the electric current minimum, also corresponding the reducing of voltage at motor two ends reaches purpose of energy saving at this moment.After load on the motor band, the electric motor loop electric current increases, voltage on the sample resistance R increases, pass through voltage contrasting amplified circuit again, be added on the SCR control amplifying circuit, make the controllable silicon SCR angle of flow increase, the voltage that is added on the motor increases, the motor power output increases, and has guaranteed that motor normally moves.
Description of drawings
The drawing of accompanying drawing is described as follows:
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is for realizing the circuit theory diagrams of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail:
As shown in fig. 1, the utility model full-automatic electric sewing machine electricity-saving appliance comprises step-down rectifying circuit, synchronous trigger circuit, SCR control amplifying circuit, and sampling stores amplifying circuit, voltage contrasting amplified circuit and sewing machine motor.
As shown in Figure 2, described step-down rectifying circuit includes transformer B, rectifier bridge Z, triode VT1, resistance R 1, capacitor C 1, voltage stabilizing didoe ZCW.Form regulator rectifier circuit commonly used, the output direct-current working volts.
Described synchronous trigger circuit comprises capacitor C 3, triode VT2, VT4, resistance R 2, R3, R4, R10.Draw the feedback of sewing machine electric moter voltage from the anode of controllable silicon SCR, give capacitor C 3 chargings, form synchronous trigger circuit commonly used through R10.
Described SCR control amplifying circuit comprises resistance R 5, R6, R7, R8, diode D5, D6, triode VT3, VT5, capacitor C 2, LED (red), controllable silicon SCR.Form typical phase control AC voltage adjusting circuit, triggering signal is amplified by triode VT3, VT5 through diode D5, the angle of flow of control controllable silicon SCR, the operating current of control motor.
Described sampling stores amplifying circuit and comprises resistance R 11, R12, R13, R14, R15, amplifier IC-1, IC-2, diode D7, D10, capacitor C 4, field effect transistor T, the positive input terminal of amplifier IC-1 joins by the negative electrode of resistance R 11 with controllable silicon SCR, resistance R 12 is connected between the negative input end and ground of amplifier IC-1, be connected to resistance R 13 between the negative input end of amplifier IC-1 and its output, the grid of field effect transistor T is connected to being connected in series on the DC loop of capacitor C 4 and diode D10, diode D7 is connected to the grid of field effect transistor T and the output of amplifier IC-1, resistance R 14 is connected between the source electrode and ground of field effect transistor T, the positive input terminal of amplifier IC-2 is connected on the contact of the source electrode of field effect transistor T and resistance R 14, the negative input end of amplifier IC-2 links to each other with its output, the drain electrode of field effect transistor T connects positive source, and the output of amplifier IC-2 is connected to resistance R 15.
Described voltage contrasting amplified circuit comprises potentiometer W, resistance R 16, R17, R18, R19, R20, R21, R22, R23, R24, R25, amplifier IC-3, IC-4, diode D8, D9, LED, capacitor C 5, potentiometer W is connected between controllable silicon negative electrode and the ground, resistance R 16, R17 is serially connected on the DC loop, the resistance R 18 that is connected to amplifier IC-3 positive input terminal is joined with potentiometer W adjustable side, be connected to resistance R 19 between the negative input end of amplifier IC-3 and its output, diode D8, resistance R 21 is serially connected in the output of amplifier IC-3 and the positive input terminal of IC-4, capacitor C 5, resistance R 20 is attempted by between B point and the ground, the negative input end of amplifier IC-4 is connected on resistance R 22, on the DC loop of R23 serial connection, resistance R 24, LED is serially connected between IC-4 output and the ground, diode D9, resistance R 25 is serially connected between the output and A point of IC-4.Described amplifier model is LM-324.
Step-down rectifying circuit, synchronous trigger circuit, SCR control amplifying circuit are common circuit, and its operation principle is not described further at this.
The operation principle of voltage contrasting amplified circuit is: after the energized, the electric motor starting immediate current increases, get motor current signal at the controllable silicon cathode terminal, through potentiometer W, 10 pin that resistance R 18 enters amplifier IC-3 amplify, export through diode D8 by 8 pin, the 12 pin secondaries that resistance R 21 enters amplifier IC-4 amplify, light LED green (work indication) by 14 pin output high potential through resistance R 24, another road is through diode D9, resistance R 25 is added to the A point of synchronous trigger circuit, at this moment diode D5 ends, by triode VT3, the VT5 output current drives the full conducting of controllable silicon (motor direct-on-line starting), the electric motor starting after-current reduces, enter the Current Control A point current potential of IC-3 by regulator potentiometer W, make the empty load of motor electric current reduce to minimum, reach the purpose of economize on electricity.
The operation principle that sampling stores amplifying circuit is: experimental results show that, the electric motor starting electric current and the no-load current of the different plates of same rated power are all different, electric current is also bigger during the bigger empty load of motor of starting current, and electric current is also less during the little empty load of motor of starting current.According to this characteristic, amplify through 3 pin that resistance R 11 enters IC-1 at silicon controlled cathode terminal power taking machine starting current signal, charge to capacitor C 4 through diode D7 rectification from the 1 pin output voltage of IC-1, and filtered crest voltage stored, this voltage enters 5 pin of IC-2 through field effect transistor, (this preserves voltage is constant to amplifying signal through resistance R 15 by the output of 7 pin of IC-2, be to preserve according to the starting current peak sample of various motors) enter that 9 pin of IC-3 provide the compared potential poor on the voltage contrasting amplified circuit, and all the time with this current potential of ordering than A on the potential difference control synchronous trigger circuit, behind electric motor starting, progress into when running well, electric current by electric motor loop progressively reduces, the voltage at sample resistance R two ends progressively reduces, the voltage at potentiometer W two ends reduces, the 10 pin current potentials of amplifier IC-3 reduce on the comparison circuit, and the voltage on the negative input end of amplifier IC-3 is because of the output end voltage constant of sampling amplification circuit, make the output end voltage of amplifier IC-3 reduce, cause the output end voltage of amplifier IC-4 to reduce, A point current potential reduces, thyristor operating angle reduces, the voltage at motor two ends reduces, until reaching the Current Control A point current potential that regulator potentiometer W is regulated, make the empty load of motor electric current reduce to the minimum value that sets automatically, thereby reach the purpose of automatic adjusting power output.
The utility model is easy for installation, exempts from debugging, and the flush joint sewing machine motor that is fit to various plates and model uses.
Claims (3)
1. full-automatic electric sewing machine electricity-saving appliance, comprise the step-down rectifying circuit that direct-current working volts are provided, the synchronous trigger circuit that links to each other with the control end of SCR control amplifying circuit, with the controllable silicon SCR of motor joining at power end, it is characterized in that being serially connected with sample resistance R in controllable silicon SCR and earth terminal, on sample resistance R, be connected to sampling and store amplifying circuit and voltage contrasting amplified circuit, the output of sampling storage amplifying circuit is connected to another input of voltage contrasting amplified circuit, the control end of the output termination SCR control amplifying circuit of voltage contrasting amplified circuit.
2. full-automatic electric sewing machine electricity-saving appliance according to claim 1, it is characterized in that described sampling stores amplifying circuit and comprises resistance R 11, R12, R13, R14, R15, amplifier IC-1, IC-2, diode D7, D10, capacitor C 4, field effect transistor T, the positive input terminal of amplifier IC-1 joins by the negative electrode of resistance R 11 with controllable silicon SCR, resistance R 12 is connected between the negative input end and ground of amplifier IC-1, be connected to resistance R 13 between the negative input end of amplifier IC-1 and its output, the grid of field effect transistor T is connected to being connected in series on the DC loop of capacitor C 4 and diode D10, diode D7 is connected to the grid of field effect transistor T and the output of amplifier IC-1, resistance R 14 is connected between the source electrode and ground of field effect transistor T, the positive input terminal of amplifier IC-2 is connected on the contact of the source electrode of field effect transistor T and resistance R 14, the negative input end of amplifier IC-2 links to each other with its output, the drain electrode of field effect transistor T connects positive source, and the output of amplifier IC-2 is connected to resistance R 15.
3. full-automatic electric sewing machine electricity-saving appliance according to claim 2, it is characterized in that described voltage contrasting amplified circuit comprises potentiometer W, resistance R 16, R17, R18, R19, R20, R21, R22, R23, R24, R25, amplifier IC-3, IC-4, diode D8, D9, LED, capacitor C 5, potentiometer W is connected between controllable silicon negative electrode and the ground, resistance R 16, R17 is serially connected on the DC loop, the resistance R 18 that is connected to amplifier IC-3 positive input terminal is joined with potentiometer W adjustable side, be connected to resistance R 19 between the negative input end of amplifier IC-3 and its output, diode D8, resistance R 21 is serially connected in the output of amplifier IC-3 and the positive input terminal of IC-4, capacitor C 5, resistance R 20 is attempted by between B point and the ground, the negative input end of amplifier IC-4 is connected on resistance R 22, on the DC loop of R23 serial connection, resistance R 24, LED is serially connected between IC-4 output and the ground, diode D9, resistance R 25 is serially connected between the output and A point of IC-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02227309 CN2548363Y (en) | 2002-05-08 | 2002-05-08 | Automatic electric cloth vehicle electricity-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02227309 CN2548363Y (en) | 2002-05-08 | 2002-05-08 | Automatic electric cloth vehicle electricity-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2548363Y true CN2548363Y (en) | 2003-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02227309 Expired - Fee Related CN2548363Y (en) | 2002-05-08 | 2002-05-08 | Automatic electric cloth vehicle electricity-saving device |
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| Country | Link |
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| CN (1) | CN2548363Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369343C (en) * | 2005-06-15 | 2008-02-13 | 陈晓余 | Garment vehicle idle power-off electricity-saving device |
| CN100428624C (en) * | 2006-10-08 | 2008-10-22 | 鹤山市多普乐高新节电技术有限公司 | Electricity saving device of full automatic three-phase motor |
-
2002
- 2002-05-08 CN CN 02227309 patent/CN2548363Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369343C (en) * | 2005-06-15 | 2008-02-13 | 陈晓余 | Garment vehicle idle power-off electricity-saving device |
| CN100428624C (en) * | 2006-10-08 | 2008-10-22 | 鹤山市多普乐高新节电技术有限公司 | Electricity saving device of full automatic three-phase motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HESHAN CITY NUMBER, DUOPULE HIGH-TECH ENERGY-SAVI Free format text: FORMER OWNER: HESHAN CITY XINLI ELECTRICAL APPARATUS INDUSTRY CO. LTD. Effective date: 20061201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061201 Address after: 529700, Heshan, Guangdong province Heshan road 588, many high energy saving Technology Co., Ltd. Patentee after: Duopule Hi-New Electricity Saving Tech Co., Ltd., Heshan City Address before: 529725 Guangdong city of Heshan province Zhen Gao Zhen Town South Industrial Zone Patentee before: Xinli Electric Appliances Industry Co., Ltd., Heshan City |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030430 |