CN100490267C - Single-phase asynchronous motor protector - Google Patents
Single-phase asynchronous motor protector Download PDFInfo
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- CN100490267C CN100490267C CNB2006101505530A CN200610150553A CN100490267C CN 100490267 C CN100490267 C CN 100490267C CN B2006101505530 A CNB2006101505530 A CN B2006101505530A CN 200610150553 A CN200610150553 A CN 200610150553A CN 100490267 C CN100490267 C CN 100490267C
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- phase
- resistance
- asynchronous motor
- flip flop
- type flip
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Abstract
This invention provides a single-phase asynchronous motor protector, after a d trigger as the core element and a single-phase AC of 220V are accessed into said protector, one of the phase lines or zero lines passes through a resistor and an inductor to be connected to the clock end of a D trigger, the end of the trigger passes through the inductor and the resistor to be exteriorly connected to a node connected by a phase-splitting capacitor and a secondary of a single-phase asynchronous motor, at the same time, a single-phase AC of 220V is dropped and commutated by a dropping and commutating circuit composed of capacitors and diodes then to be stabilized by two stages of voltage stabilization to provide power supply of different needs of voltages.
Description
Technical field the present invention relates to a kind of single-phase asynchronous motor protector.
This protector can guarantee monopole asynchronous motor when phase-splitting capacitor is intact, and the current supply circuit of monopole asynchronous motor could get electric, and monopole asynchronous motor can starting operation.If the phase-splitting capacitor of monopole asynchronous motor damages, be phase-splitting capacitor open circuit or short circuit after, the current supply circuit of monopole asynchronous motor can not get, monopole asynchronous motor also can't get, thereby damage because of the phase-splitting capacitor of monopole asynchronous motor, the generation of the electric motor overheating burnout failure that promptly phase-splitting capacitor opens circuit or short circuit caused have been avoided.
The portable air compressor that uses in monopole asynchronous motor in air-conditioning, washing machine and the refrigerators that this protector goes for using in a large number in people's life and the small-sized production, the protection of the monopole asynchronous motor in carpenter's multipurpose sharpener saw, fiberizer, the dough kneading machine etc.
We know the theoretic simple analysis of background technology: can freely rotate in order to make monopole asynchronous motor, must make rotor can produce certain starting torque when starting.Monopole asynchronous motor adopts the electric capacity split-phase method to produce starting torque, the rotor of motor is the mouse-cage type winding, work winding W and starting winding S are housed on the stator, these two windings differ 90 degree on the locus, behind the starting winding S serial connection phase-splitting capacitor, with work winding W access in parallel power supply, under same single phase poaer supply effect, select the phase-splitting capacitor of appropriate electrical capacity, the electric current of work winding and the electric current of starting winding are differed near 90 degree, the resultant magnetic field of two winding generations is a rotating magnetic field, and cage-type rotor rotates with regard to producing electromagnetic torque under the effect of this rotating magnetic field.After the phase-splitting capacitor of monopole asynchronous motor damaged, just magnetic field produced without spin, and cage-type rotor can not rotate because of no electromagnetic torque, and electric energy can't change mechanical energy into, caused the motor temperature rising to cause motor to burn and become heat energy.
A large amount of refrigerators that use in the people family, the accident that monopole asynchronous motor in the portable air compressor that uses in monopole asynchronous motor among the washing machine Kong Tone etc. and the small-sized production, fiberizer and many electricity consumptions of the carpenter planer etc. is burnt is a lot, studying carefully the reason that it is burnt, all is to cause because the phase-splitting capacitor in the monopole asynchronous motor damages basically.The protector that at all not can be used for monopole asynchronous motor in the prior art.
Summary of the invention the objective of the invention is: a kind of " single-phase asynchronous motor protector " is provided.
This protector can guarantee monopole asynchronous motor when its phase-splitting capacitor is intact, and the current supply circuit of monopole asynchronous motor could get electric, and monopole asynchronous motor can starting operation.If the phase-splitting capacitor of monopole asynchronous motor damages, promptly phase-splitting capacitor open circuit or short circuit after, the current supply circuit of monopole asynchronous motor can not get electric, and monopole asynchronous motor is protected.
Realize that the concrete scheme of above-mentioned purpose is: a kind of single-phase asynchronous motor protector; it is characterized in that: this protector with a d type flip flop as core parts; the phase line of single-phase alternating current or zero line are received arbitrarily by the 4th resistance R 4; the two ends of the series arm that second inductance L 2 and the 5th resistance R 5 orders are composed in series; the connected node of one end of one end of second inductance L 2 and the 5th resistance R 5 is connected to the clock end CP of d type flip flop; described single-phase alternating current is through diode D1; D2 and second capacitor C, 2 step-down rectifiers; power-polarity end after the rectification links to each other with the other end of the 5th resistance, again with the power supply negative terminal V of d type flip flop
SS, clear terminal R is connected with set end S; The trigger end D of d type flip flop connects an end of first inductance L 1, and the other end of first inductance L 1 is received on the node of two resistance that are connected in series by first resistance R 1 and second resistance R 2, and the other end of second resistance R 2 is received the power supply negative terminal V of d type flip flop again
SS, on clear terminal R and the contact that set end S is connected, the other end of described first resistance R 1 is received on the node that phase-splitting capacitor and monopole asynchronous motor starting winding join, and the state of split-phase capacitor is judged; The state output end Q of d type flip flop drives the conducting of triode according to the state of split-phase capacitor through a resistance or ends, and reaches the purpose that control is serially connected in monopole asynchronous motor current supply circuit repeat circuit contact, and monopole asynchronous motor is implemented protection; Described single-phase alternating current can also provide the power supply of different voltage requests for the circuit of protector through electric capacity and diode step-down rectifier simultaneously.
The normal opened contact of the relay in the protector internal circuit of the present invention is serially connected in the current supply circuit of monopole asynchronous motor, guarantees that the current supply circuit of monopole asynchronous motor just can be powered under the intact situation of phase-splitting capacitor of monopole asynchronous motor; If the split-phase capacitor of monopole asynchronous motor damages, then the current supply circuit of monopole asynchronous motor is stopped power supply, thereby has avoided the generation of monopole asynchronous motor because of the electric motor overheating burnout failure that damage caused of phase-splitting capacitor.
The normally closed contact of the relay in the protector internal circuit of the present invention is selected for use for interlocking or warning as interlocking or warning contact.
Protector circuit provided by the present invention is simple, volume is little, in light weight, capacitive load characteristic, can compensate the power factor of the load of this inductive load characteristic of monopole asynchronous motor, and is very energy-conservation.This protector can be made various mounting meanss, and is very easy to use.
Description of drawings Fig. 1 is the circuit diagram of protector of the present invention;
Fig. 2 is the outer end subgraph of protector of the present invention.
Embodiment is further described concrete enforcement of the present invention below in conjunction with Fig. 1 and Fig. 2:
Resistance R in Fig. 1 circuit diagram
1A termination external connection terminal C, resistance R
1The other end, an end and the inductance L of resistance R 2
1An end be connected to some inductance L altogether
1The trigger end D of another termination d type flip flop, resistance R
2The other end, electrochemical capacitor C
2Negative pole and diode D
1Anodal external terminal B, capacitor C
1An end, resistance R
3An end and resistance R
4An end external terminal A, capacitor C
1The other end, resistance R
3The other end and diode D
1Negative pole and diode D
2Positive pole be connected to some resistance R altogether
4Another termination inductance L
2An end, inductance L
2The other end and resistance R
5An end be connected to the clock end CP of d type flip flop, resistance R after being connected again
5The other end, the set end S of d type flip flop, the clear terminal R and the d type flip flop power supply negative terminal V of d type flip flop
SSBe connected to external connection terminal B again, diode D after being connected to a bit altogether
2Negative pole, electrochemical capacitor C
2Positive pole, the positive pole of LED, voltage stabilizing didoe DW
1Negative pole and resistance R
6An end be connected to some resistance R altogether
6The other end, resistance R
7An end, voltage stabilizing didoe DW
2Negative pole and capacitor C
4An end be connected to the power supply anode V of d type flip flop after being connected to a bit altogether again
DD, voltage stabilizing didoe DW
1Positive pole, resistance R
7The other end, voltage stabilizing didoe DW
2Positive pole, capacitor C
4The other end and after the emitter of triode T is connected to a bit altogether, be connected to external connection terminal B again, the negative pole of LED, diode D
3Negative pole, an end and the electrochemical capacitor C of relay J K actuating coil
3Positive pole be connected to some diode D altogether
3Positive pole, the other end of relay J K actuating coil, electrochemical capacitor C
3Negative pole and the collector electrode of triode T be connected to some resistance R altogether
8A base stage that is terminated at triode T, resistance R
8The other end be connected to the state output end Q of d type flip flop.
Normally closed and normal opened contact 1,2,4 corresponding respectively being connected on external connection terminal 11,12 and 14 of relay J K in Fig. 1 circuit diagram.
A, B in Fig. 2 outer end subgraph, C, 11,12, the 14th, six external connection terminals of this protector.A phase line and a zero line of single-phase alternating current can be received arbitrarily on two terminals of A, B, and the C terminal connects on the node that the starting winding of phase-splitting capacitor and monopole asynchronous motor joins; 11,14 terminals are serially connected in the single-phase alternating current current supply circuit of monopole asynchronous motor, 11,14 terminals are attempted by on the normal opened contact of starting button again.After A, B, C, 11,14 5 external terminal carefully connected the wire, this moment, monopole asynchronous motor just was subjected to the protection of protector of the present invention.Energized just can be by the starting button starting motor.If motor runs well, illustrate that the split-phase capacitor of monopole asynchronous motor is intact, LED is necessarily shinny; If LED does not work, the motor fail to start, the split-phase capacitor that monopole asynchronous motor is described damages, phase-splitting capacitor is not that to open circuit be exactly short circuit, the prompting maintenance personal changes capacitor, avoids the generation of the motor burnout failure that the damage because of the monopole asynchronous motor split-phase capacitor causes.
11,12 external connection terminals in Fig. 2 outer end subgraph, for the interlocking or the use of reporting to the police, prompting the attendant in time change the phase-splitting capacitor of monopole asynchronous motor or handle other fault.
Claims (1)
- A kind of single-phase asynchronous motor protector, it is characterized in that: this protector with a d type flip flop as core parts, the phase line of single-phase alternating current or zero line are received arbitrarily by the 4th resistance (R4), the two ends of the series arm that second inductance (L2) and the 5th resistance (R5) order are composed in series, the connected node of one end of one end of second inductance (L2) and the 5th resistance (R5) is connected to the clock end CP of d type flip flop, described single-phase alternating current is through diode (D1, D2) and second electric capacity (C2) step-down rectifier, power-polarity end after the rectification links to each other with the other end of the 5th resistance, again with the power supply negative terminal VSS of d type flip flop, clear terminal R is connected with set end S; The trigger end D of d type flip flop connects an end of first inductance (L1), the other end of first inductance (L1) is received on the node of two resistance that are connected in series by first resistance (R1) and second resistance (R2), on power supply negative terminal VSS, the clear terminal R that the other end of second resistance (R2) is received d type flip flop again and the contact that set end S is connected, the other end of described first resistance (R1) is received on the node that phase-splitting capacitor and monopole asynchronous motor starting winding joins, and the state of split-phase capacitor is judged; The state output end Q of d type flip flop is whether split-phase capacitor damages by a resistance and drive the conducting of triode or end according to the state of split-phase capacitor, reach the purpose that control is serially connected in monopole asynchronous motor current supply circuit repeat circuit contact, monopole asynchronous motor is implemented protection; Described single-phase alternating current can also provide the power supply of different voltage requests for the circuit of protector through electric capacity and diode step-down rectifier simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101505530A CN100490267C (en) | 2006-10-19 | 2006-10-19 | Single-phase asynchronous motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101505530A CN100490267C (en) | 2006-10-19 | 2006-10-19 | Single-phase asynchronous motor protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1933269A CN1933269A (en) | 2007-03-21 |
| CN100490267C true CN100490267C (en) | 2009-05-20 |
Family
ID=37878952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101505530A Expired - Fee Related CN100490267C (en) | 2006-10-19 | 2006-10-19 | Single-phase asynchronous motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100490267C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684846A (en) * | 2016-07-18 | 2017-05-17 | 丛伟滋 | Protective circuit used in starting and operating processes of single-phase asynchronous motor |
-
2006
- 2006-10-19 CN CNB2006101505530A patent/CN100490267C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1933269A (en) | 2007-03-21 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: YANG CHENGSEN Free format text: FORMER OWNER: YANG CHENGXIN; APPLICANT Effective date: 20071228 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20071228 Address after: 1, unit 13, Xiang Xin District, Yanjiao Development Zone, Hebei, Sanhe Province, 102: 065201 Applicant after: Yang Chengsen Address before: Zip code 2, 2 unit 2, Meng Ying new village, development zone, Qinhuangdao, Hebei, China: 065201 Applicant before: Yang Cheng Xin Co-applicant before: Yang Chengsen |
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| 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: 20090520 Termination date: 20121019 |