CN2113569U - Winding type ac motor centrifugal switch frequency-sensitive starter - Google Patents
Winding type ac motor centrifugal switch frequency-sensitive starter Download PDFInfo
- Publication number
- CN2113569U CN2113569U CN 91209192 CN91209192U CN2113569U CN 2113569 U CN2113569 U CN 2113569U CN 91209192 CN91209192 CN 91209192 CN 91209192 U CN91209192 U CN 91209192U CN 2113569 U CN2113569 U CN 2113569U
- Authority
- CN
- China
- Prior art keywords
- starter
- coil
- motor
- contact
- centrifugal switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Motor And Converter Starters (AREA)
Abstract
The utility model relates to a centrifugal switch frequency sensitive starter of a winding type alternate-current motor. The utility model is uniformly provided with six iron core poles between two steel plates on a shaft without a slip ring of the existing motor. Each iron core pole is sheathed with a coil, and forms one side of the delta-shaped or Y-shaped frequency sensitive starter. The utility model is additionally provided with a circular insulating board which is uniformly provided with three groups of centrifugal switches. The centrifugal switch is composed of a circular heavy bob, a screw rod, a positioning sleeve, a spring, movable contactors and a fixed contact contactor. A rotor winding is electrically connected with a start winding. The heavy bob drives the screw rod, the movable contactors and a compression spring to move by centrifugal force. The contactors are respectively communicated by the three movable contactors in order to make the windings and the coils have short circuit.
Description
The utility model relates to wound AC motor centrifugal switch formula quick starter frequently, especially will be loaded on the coil and the rotor winding of the quick starter of frequency on the wound-rotor motor armature spindle, under certain rotating speed, simultaneously the centrifugal switch of their short circuits.
Known at present, the structure that is set in the quick starter of frequency on such line formula motor rotor shaft is: between two blocks of circular steel plates, be evenly equipped with 6 cylindrical steel rods and make the magnetic conductive iron post, be with a coil on each post, 6 coils are electrically connected are connected into three-phase bifurcation or delta connection, lifting one's head line with the motor rotor winding then is electrically connected respectively, the rotor winding is lifted one's head respectively and to be electrically connected when motor starting, rotor winding induction frequencies is by 50 weeks of per second when motor starting, reduce to per second gradually with the increase of rotating speed about 2 weeks, be serially connected with in the rotor winding impedance of quick starter frequently also from large to small, so can reduce the starting current of motor.
The coil of this starter is to insert all the time in the rotor current loop from starting to normal operation, it all equates with this motor rotor electric current any time size, therefore require the conductor cross-section of this starter coil, should not little this motor rotor group conductor cross-section, this class motor changes electric current, pacifies to hundreds of from tens and pacifies, and used lead increases with the increase of electric current, caused difficulty for the electrical connection between the coil, need many with material.
Some epitrochanterian collector ring is loaded in the end cap of motor, be subjected to the restriction in electric motor structure space, the impedance of starter, load request when excessive current flow in motor multiple and starting, if press the code requirement design, just can't adorn in the end cap that adds this motor, this class motor on the other hand, from its moving change normal operation over to after, should excise the resistance or the impedance that insert in the rotor circuit, just can improve the rotating speed and the efficient of motor, and because of the structural reason of this kind starter, the impedance of the quick starting of this frequency is all less than normal, and the starting current that makes motor is all about 4 times, and this overcurrent multiple is to satisfy the requirement that this class motor of starting is limited in about 2 times of rated current.
The purpose of this utility model provide a kind of generation switch the quick starter of frequency it can not only reduce the starting current of wound-rotor motor, and reach the rotor winding and the short circuit reliably of starter coil of certain rotating speed after will starting.
But the utility model is achieved in that between two blocks of circular steel plates that can be contained on the coiling motor rotor shaft, be evenly equipped with the core limb that 6 round steel are made, be with coil on the core limb respectively and be with an aluminum pipe (light start does not overlap this aluminum pipe) again in each coil outside, model and instructions for use according to motor, the starter coil can connect into the bifurcation connection, in circular steel plate one side, a circular insulating board is set round weight is housed, screw mandrel, screw mandrel positioning sleeve on it.Spring, spring pressure set screw are decided contact, moving contact, buffer spring sheet, and three centrifugal switch groups of composition are distributed on the circular insulating board by 120 degree, each part bolt, and nut is linked as an integral body.The three-phase lead-out wire of motor rotor winding and the three-phase lead-out wire of starter coil, be connected at interval respectively and decide on the contact, and decide contact to adjacent two and be electrically connected, after motor energising starting rotor reached certain rotating speed, circular weight drove screw mandrel and moving contact under action of centrifugal force, the compression spring, moving contact is decided contact to separately two and is communicated with, and the coil of starter and rotor winding move such electronic function simultaneously by short circuit in the best condition.
Owing to adopt such scheme, when reducing the wound-rotor motor starting current, the quick starter coil of frequency that also inserts after entering normal operating condition in the motor rotor circuit is excised, again with rotor winding short circuit, the rotor current starter coil of no longer flowing through, but become the loop by centrifugal switch, the coil of starter only just has electric current when motor starting, by reducing the winding wire cross section, reduce the volume of starter, strengthened adaptability, reduced material consumption.Because of rotor circuit by direct short-circuit, improved the rotating speed and the efficient of motor, reduced energy resource consumption.
Below in conjunction with drawings and Examples, the utility model is described in further detail:
The circuit diagram that Fig. 1 adopts for the utility model.
Fig. 2 is the switch plane figure of present embodiment.
Fig. 3 is the present embodiment radial view.
Fig. 4 is the present embodiment axial view.
Among the figure: (1) is circular weight, (2) be lock screw, (3) be screw mandrel, (4) be the spring pressure set screw, (5) be the round nut keeper, (6) be fastening bolt, (7) be spring, (8), (9), (10), (11), (12), (13) for deciding contact, (14) be moving contact, (15) be the buffer spring sheet, (16) be positioning sleeve, (17) be brass screws, (18) be circular insulating board, (19), (20), (21) be copper conductor, (22) be the insulation board set bolt, (23) be nut, (24) be preceding yoke plate, (25) be core limb, (26) be back yoke plate, (27) be the core limb set bolt, (28) be coil, (29) be aluminum pipe, a
1, b
1, c
1, a
2, b
2, c
2, be the head of starter coil, x
1, y
1, z
1, x
2, y
2, z
2Be the tail of starter coil, A, B, C are motor rotor winding terminal.
In Fig. 1, decide contact (8) and a
1, x
1, a
2Decide contact (10) and b
1, y
1, b
2Decide contact (12) and c
1, z
1, c
2, order is electrically connected respectively.x
2, y
2, z
2Be electrically connected.Motor rotor winding terminal A and decide contact (9), copper conductor (19) is decided contact (8); The end of a thread B and decide contact (11), copper conductor (20); Order is electrically connected respectively.
At Fig. 2,3, in 4, insulation board set bolt (22), nut (23), core limb set bolt (27), the preceding yoke plate of the circular insulating board that three centrifugal switches are housed (18) (24), 6 core limbs (25), back yoke plate (26), connect in aggregates, on its six core limbs (25), be with (28) six of coils respectively and outside circle, respectively be with a cover aluminum pipe (29) (light start does not have this pipe), at preceding yoke plate (24) and coil terminal A, B, C respectively opens corresponding position it a circular hole, does them and passes to connect and decide contact (8), (10), (12) usefulness of connection, the tail x of coil
1, y
1, z
1, respectively with a
2, b
2, c
2And x
2, y
2, z
2, at preceding yoke plate (24), position, space between the back yoke plate (26) is electrically connected, integral assembling has taken off on the axle at that position of collector ring in the wound-rotor motor rotor then, during suit with circular insulating board (18) towards rotor winding terminal A, B, C one side, also be convenient to they are decided contact (9), (11), (13).
When motor energising starting, rotor is static, the induction frequencies of rotor winding is 50 weeks of per second, induced voltage is also the highest, but the impedance of the quick starter of this time-frequency is also maximum, and limited the starting current of motor, along with rotor speed increase induction frequencies in the rotor and voltage just reduces gradually, frequently the impedance of quick starter also reduces gradually, circular weight is under action of centrifugal force, with the increase that increases centrifugal force of rotating speed, overcome the tension force of spring, moving contact (14) is decided contact and is connected corresponding, make motor rotor winding terminal A, B, the C short circuit, make motor reach rated speed quickly, make the centrifugal force of centrifugal switch bigger, guarantee the good contact of switch contact.By spring pressure adjusting nut (4), regulating spring realizes that to the tension force of moving contact (14) centrifugal switch is in the purpose of being closed state and respectively organizing the switch synchronizing close under 65% left and right sides rotating speed, and circuit theory diagrams according to Fig. 1, as long as any two centrifugal switch closures are arranged, the coil of rotor winding and the quick starter of frequency has increased to leave and has closed the reliability that is used for the quick starter of such motor frequency also just by complete short circuit.
Claims (1)
1, wound AC motor centrifugal switch formula is quick starter frequently, between two circular steel plates, be evenly equipped with 6 intimate posts of making by round steel, be with the outer aluminum pipe (underloading does not have this aluminum pipe) of a coil on the core limb respectively, the coil of this starter connects into Y or △ or polyphone connection, it is characterized in that: circular steel plate one side, one circular insulating board is set, be equipped with three groups on it by round weight, screw mandrel, the screw mandrel positioning sleeve, the centrifugal switch that spring is formed, can be the three-phase terminal of motor rotor winding and starter coil, be connected at interval and decide on the contact, adjacently decide contact and be electrically connected, after rotor reaches certain rotating speed, under the work of centrifugal force, moving contact is decided contact to separately two and is connected and make starter coil and the whole short circuits of commentaries on classics-winding that are connected to contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209192 CN2113569U (en) | 1991-04-15 | 1991-04-15 | Winding type ac motor centrifugal switch frequency-sensitive starter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91209192 CN2113569U (en) | 1991-04-15 | 1991-04-15 | Winding type ac motor centrifugal switch frequency-sensitive starter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2113569U true CN2113569U (en) | 1992-08-19 |
Family
ID=4918214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91209192 Granted CN2113569U (en) | 1991-04-15 | 1991-04-15 | Winding type ac motor centrifugal switch frequency-sensitive starter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2113569U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633887A (en) * | 2012-08-27 | 2014-03-12 | 龙浪 | Leakage flux reduction method of frequency response starter of wound-rotor motor and frequency response starter |
| CN111811000A (en) * | 2019-04-12 | 2020-10-23 | 安徽环宝厨房设备制造有限公司 | High-performance smoke exhaust ventilator |
-
1991
- 1991-04-15 CN CN 91209192 patent/CN2113569U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633887A (en) * | 2012-08-27 | 2014-03-12 | 龙浪 | Leakage flux reduction method of frequency response starter of wound-rotor motor and frequency response starter |
| CN111811000A (en) * | 2019-04-12 | 2020-10-23 | 安徽环宝厨房设备制造有限公司 | High-performance smoke exhaust ventilator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1008314B (en) | Synchronous a.c. motor | |
| CN106300856A (en) | A kind of magneto multilayer board motor | |
| CN2113569U (en) | Winding type ac motor centrifugal switch frequency-sensitive starter | |
| CN202103556U (en) | Magnetic circuit mixing excitation motor based on double salient pole structure | |
| CN2432725Y (en) | Self-drive monophase diametral winding permanent-magnet reluctance machine | |
| US3644810A (en) | Sensing and control device for electric motor-starting circuits | |
| CN2293153Y (en) | Double ring magnetic pole parallel winding rare-earth permanent-magnet DC electric machine | |
| CN111030406A (en) | Super-high-efficiency low-voltage three-phase asynchronous motor | |
| CN2219539Y (en) | High-current rotation multi-position switch driven by pulse motor | |
| CN2624377Y (en) | Vacuum automatic circuit recloser | |
| CN2152343Y (en) | Reactance starter for motor | |
| CN202737793U (en) | Motor frequency sensitive starter | |
| CN1003411B (en) | Electronic rheostat squirrel-cage motor with high starting moment | |
| CN201927468U (en) | Energy-saving power generator | |
| CN2141618Y (en) | Single-phase brushfree neodymium iron boron ac generator | |
| CN212163119U (en) | High-efficiency low-voltage three-phase asynchronous motor | |
| CN206452253U (en) | A kind of centrifugal excitation electromotor device | |
| KR200215521Y1 (en) | change core of moter | |
| CN2184288Y (en) | M-phase frequency sensitive variable voltage actuator and electromotor with actuatoe | |
| CN2082048U (en) | Non-brush eddy starter of winding-type induction motor | |
| CN1064377A (en) | The brushless eddy starter of Wound induction motor | |
| RU1819370C (en) | Electric motor converter | |
| CN2206007Y (en) | Self-change impedance compensating starter | |
| SU1040568A1 (en) | Salient-poled synchronous machine rotor | |
| CN2215779Y (en) | All metal two-direction straight line motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |