CN100442415C - Centrifugal switch of single phase induction motor - Google Patents
Centrifugal switch of single phase induction motor Download PDFInfo
- Publication number
- CN100442415C CN100442415C CNB2004100194249A CN200410019424A CN100442415C CN 100442415 C CN100442415 C CN 100442415C CN B2004100194249 A CNB2004100194249 A CN B2004100194249A CN 200410019424 A CN200410019424 A CN 200410019424A CN 100442415 C CN100442415 C CN 100442415C
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- centrifugal
- slide block
- coil
- rotating shaft
- induction motor
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Abstract
The present invention discloses a centrifugal switch of a single phase induction motor, which comprises a relatable sleeve tube integrating a rotating shaft of a motor into a whole, a slide block, a staring terminal disconnecting an auxiliary winding, an iron core coil of a stator of the single phase induction motor with a main winding through the slide block, a pair of centrifugal hammers connected with the slide block, a pair of springs and a large cooling sheet, wherein the slide block slides correspondingly to the sleeve tube along the axial direction of the rotating shaft when rotating together with the sleeve tube; the centrifugal hammers can relatively move and rotate because of centrifugal force when the rotating shaft rotates, and consequently, the slide block moves correspondingly to the sleeve tube along the axial direction; the springs of which the ends are connected with the centrifugal hammer can increase the mutually closing direction of the centrifugal hammer; the large cooling sheet arranged outside the centrifugal hammer supplies air for the coil when rotating. Air supplied for the coil is increased, which causes that the coil can be fully cooled.
Description
Technical field
The invention belongs to a kind of centrifugal switch device of monocyclic-start induction motor, be specifically related to a kind of be provided with big cooling fin on the centrifugal hammer, when centrifugal hammer rotates, the wind that relies on cooling fin to produce makes the centrifugal switch of the monocyclic-start induction motor that the coil of stator fully cools off.
Background technology
In general, motor is the device that converts electrical energy into mechanical energy, can be divided into DC motor and alternating current motor according to employed power supply, alternating current motor comprises induction motor, synchronous motor and commutator motor etc. again, and induction motor can be divided into 3 phase induction motors and monocyclic-start induction motor.Monocyclic-start induction motor is simple in structure usually, firm, and is easy to find single phase poaer supply, thereby is extensive use of as home-use, office usefulness, drive motor industrial, agriculture electrical appliance.But because of starting voluntarily,, disposed except that main winding in order to produce detent torque, with the dephased auxiliary winding of main winding on, the rotary speed of the rotor centrifugal switch that reaches 70 of toggle speed～80% o'clock, auxiliary winding is opened circuit from main winding.
As shown in Figure 1, existing monocyclic-start induction motor by energized after with regard to revolvable motor 1 and be connected on the motor 1 and after the rotation number of motor 1 reaches certain revolution, the centrifugal switch 2 of auxiliary winding and main winding disconnection can be constituted.Motor 1 comprises: the inboard is being twined coil 11 and the cylinder type closed assembly stator core 12 be made up of main winding and auxiliary winding and is being arranged on stator core 12 inboards, rotatable rotor iron core 13; The rotating shaft 14 that is inserted in the central part of rotor core 13, together rotates with rotor core 13 to perforation with upper and lower.In the upper end of rotor core 13, be provided with when rotor core 13 rotation, thereby air blowed to the cooling fin 15 of coil 11 cooling coils 11.Centrifugal switch 2 comprises: be integral and be connected on the rotating shaft 14 rotatable sleeve pipe 20; When can together rotate with sleeve pipe 20, sleeve pipe 20 is with the slide block 30 of the axis direction slip of rotating shaft 14 relatively; Rely on slide block 30, the startup terminal 60 of auxiliary winding that is wrapped in the coil 11 in the monocyclic-start induction motor stator core 12 and main winding disconnection; Be connected on the slide block 30 and can relative motion, when rotating shaft 14 rotations, rotate because of centrifugal force, thus a pair of centrifugal hammer 40 that slide block 30 is moved with axis direction relative to sleeve pipe 20; Between the relative end of two centrifugal hammers 40 and be connected with respectively between these two centrifugal hammers, 40 another relative ends and can increase centrifugal hammer 40 mutual approaching springs 50.On startup terminal 60, be provided with the slide block 30 that moves with axis direction, the drive rod 68 that the axle collar 31 moves.
According to said structure, when existing monocyclic-start induction motor made rotor core 13 rotations of motor 1 when energized, the rotating shaft 14 that links to each other with rotor core 13 is rotation thereupon also.When rotating shaft 14 is static, centrifugal hammer 40 under the resilient force of spring 50, be positioned at the approaching initial position of rotating shaft 14 on; Slide block 30 then is positioned on sleeve pipe 20 position far away.At this moment, the drive rod 68 of startup terminal 60 is positioned at can be on the starting position of auxiliary winding supply power, and in this state, after main winding and the auxiliary winding energized, rotating shaft 14 is promptly rotatable.The rotary speed of rotating shaft 14 reaches 70 of toggle speed～80% o'clock, and the centrifugal force that acts on the centrifugal hammer 40 will be above the tractive effort of spring 50.When one side of centrifugal hammer 40 moves laterally with sleeve pipe 20, be connected on the slide block 30 and can with the opposite side of slide block 30 relative motions, then to sleeve pipe 20 side shiftings, thereupon 30 of slide blocks with axis direction to sleeve pipe 20 side shiftings.At this moment, the drive rod 68 that starts terminal 60 rotates because of the axle collar 31 pressurizeds, thereby auxiliary winding and main winding disconnect, and rotating shaft 14 relies on main winding to continue rotation.As mentioned above, during the rotor core of motor 1 13 rotations, the cooling fin 15 that is arranged on rotor core 13 upper ends and the bottom blows to coil 11 sides with the rotation of rotor core 13 with air, thus cooling coil 11.
But, in above-mentioned cooling fin 15, be positioned at the cooling fin 15 that is arranged on centrifugal switch 2 directions, consider and the interference of centrifugal hammer 40 that so make lessly, coil 11 can't fully supply to air, therefore produce coil 11 and can not get the fully problem of cooling.
Summary of the invention
Be to solve the problem that prior art exists, the invention discloses and a kind ofly supply with sufficient air, make the centrifugal switch of the monocyclic-start induction motor that coil fully cools off to coil.Technical scheme of the present invention is, a kind of centrifugal switch of monocyclic-start induction motor, it comprises: with the rotatable sleeve pipe of motor rotation axis formation one, when together rotating with sleeve pipe, the slide block that slides with the axis direction of rotating shaft of relative sleeve pipe, rely on above-mentioned slide block, the startup terminal of auxiliary winding that is wrapped in monocyclic-start induction motor stator core coil and main winding disconnection, be connected on the slide block and can relative motion, when rotating, rotates on rotating shaft because of centrifugal force, thus a pair of centrifugal hammer that slide block is moved with axis direction relative to sleeve pipe; Every end is connected with the mutual approaching a pair of spring of the distance that makes centrifugal hammer, also is provided with when rotated to the air fed tabular cooling fin of coil sides in the outside of above-mentioned centrifugal hammer.
Tabular cooling fin and centrifugal hammer form one.
Description of drawings
Fig. 1 is the longitudinal sectional view of existing monocyclic-start induction motor;
Fig. 2 is the monocyclic-start induction motor longitudinal sectional view that is provided with the centrifugal switch among the present invention;
Fig. 3 is the axial view that is provided with cooling fin of the present invention;
Fig. 4 is the longitudinal sectional view of effect of the present invention.
Wherein:
1 motor, 2 centrifugal switches, 11 coils
12 stator cores, 13 rotor cores, 14 rotating shafts
15 cooling fins, 20 sleeve pipes, 30 slide blocks
31 axle collars, 40 centrifugal hammers, 50 springs
60 start terminal 68 drive rods 101 motor
102 centrifugal switches, 111 coils, 112 stator cores
113 rotor cores, 114 rotating shafts, 121 sleeve pipes
122 slide blocks, 123 start ends are given 124 springs
125 tabular cooling fin 126 centrifugal hammers 131 cooling fins
132 drive rods
Embodiment
It is following that the present invention is described in detail with reference to accompanying drawing:
Shown in Fig. 2,3, be provided with the monocyclic-start induction motor of centrifugal switch of the present invention, rotate to certain rotating speed by motor 101 and motor 101 after, power supply can be disconnected the centrifugal switch 102 that is connected on the main winding from auxiliary winding and constitute.Motor 101 comprises: the stator core 112 of coil 111 is being twined in the inboard; Be arranged on stator core 112 inboards, rotatable rotor iron core 113; The rotating shaft 114 that is inserted in the central part of rotor core 113, together rotates with rotor core 113 to perforation with upper and lower.Centrifugal switch 102 comprises: be integral and be connected on motor 101 rotating shafts 114 rotatable sleeve pipe 121; In the time of can be with sleeve pipe 121 rotation, sleeve pipe 121 relatively, the slide block 122 that slides with the axis direction of rotating shaft 114; Rely on slide block 122 auxiliary winding that is wrapped in the coil 111 on the monocyclic-start induction motor stator core 112 and the principal phase winding startup terminal 123 that opens circuit; Be connected on the slide block 122 and can relative motion, when rotating shaft 114 rotations, rotate because of centrifugal force, thus a pair of centrifugal hammer 126 that slide block 122 is moved with axis direction relative to sleeve pipe 121; Every end is connected on the centrifugal hammer 126, increases a pair of spring 124 of centrifugal hammer 126 mutual direction of closing; Be arranged on the outside of centrifugal hammer 126, for when rotated to the air fed tabular cooling fin 125 of coil 111 sides.Tabular cooling fin 125 forms one with the centrifugal hammer 126 of using the aluminium die casting, does not need to make separately or assemble, and forms suitable during casting centrifugal hammer 126 in the lump.Cooling fin 131 is formed in the rotor core 113, starts on the terminal 123 to be provided with drive rod 132.
Below, describe with reference to 4 pairs of course of action that are provided with the monocyclic-start induction motor of centrifugal switch of the present invention of accompanying drawing: energized with said structure, make rotor core 113 rotations of motor 101, the rotating shaft 114 that links to each other with rotor core 113 is rotation thereupon also.When centrifugal switch 102 when rotating shaft 114 is static, centrifugal hammer 126 under the resilient force of spring 124, be positioned at the approaching initial position of rotating shaft 114 on; Slide block 122 then is positioned on sleeve pipe 121 relative positions far away.At this moment, the drive rod 132 of startup terminal 123 is positioned at can be on the starting position of auxiliary winding supply power, and in this state, after main winding and the auxiliary winding energized, rotating shaft 114 is promptly rotatable.The rotary speed of rotating shaft 114 reaches about 70～80% o'clock of toggle speed, and the centrifugal force that acts on the centrifugal hammer 126 will be above the tractive effort of spring 124.When one side of centrifugal hammer 126 moves laterally with sleeve pipe 121, be connected on the slide block 122 and can with the opposite side of slide block 122 relative motions, then to sleeve pipe 121 side shiftings, thereupon 122 of slide blocks with axis direction to sleeve pipe 121 side shiftings.At this moment, start the drive rod 132 of terminal 123, because of axle collar pressurized rotates, thereby auxiliary winding disconnects rotating shaft 114 dependence main windings continuation rotations from main winding.
Claims (2)
1, a kind of centrifugal switch of monocyclic-start induction motor comprises the rotatable sleeve pipe that forms one with motor rotation axis; When together rotating with sleeve pipe, the slide block that slides with the axis direction of rotating shaft of relative sleeve pipe; Rely on above-mentioned slide block, the startup terminal of auxiliary winding that is wrapped in monocyclic-start induction motor stator core coil and main winding disconnection; Thereby be connected on the slide block and can relative motion, when rotating shaft rotates, rotate a pair of centrifugal hammer that slide block is moved with axis direction relative to sleeve pipe because of centrifugal force; Between the relative end of two centrifugal hammers and be connected with a distance approaching spring mutually that makes centrifugal hammer between this another relative end of two centrifugal hammers respectively, it is characterized in that: also be provided with in the outside of above-mentioned centrifugal hammer when rotated to the air fed tabular cooling fin of coil.
2, the centrifugal switch of monocyclic-start induction motor according to claim 1 is characterized in that: tabular cooling fin and centrifugal hammer form one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100194249A CN100442415C (en) | 2004-05-27 | 2004-05-27 | Centrifugal switch of single phase induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100194249A CN100442415C (en) | 2004-05-27 | 2004-05-27 | Centrifugal switch of single phase induction motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1705051A CN1705051A (en) | 2005-12-07 |
| CN100442415C true CN100442415C (en) | 2008-12-10 |
Family
ID=35577423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100194249A Expired - Fee Related CN100442415C (en) | 2004-05-27 | 2004-05-27 | Centrifugal switch of single phase induction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100442415C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254740B (en) * | 2011-05-03 | 2012-09-05 | 常州新亚电机有限公司 | Centrifugal switch execution mechanism and motor used therein |
| CN103036351A (en) * | 2012-09-30 | 2013-04-10 | 常州亚通杰威电机有限公司 | Motor and applied dryer thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5153471A (en) * | 1991-05-16 | 1992-10-06 | Emerson Electric Co. | Positioning and limiting structure for an electric motor centrifugal actuator |
| CN2150622Y (en) * | 1993-01-19 | 1993-12-22 | 柯沼贤 | Centrifugal switch base with improved structure |
| CN2200864Y (en) * | 1994-07-16 | 1995-06-14 | 臧怀沛 | Centrifugal contacter |
-
2004
- 2004-05-27 CN CNB2004100194249A patent/CN100442415C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5153471A (en) * | 1991-05-16 | 1992-10-06 | Emerson Electric Co. | Positioning and limiting structure for an electric motor centrifugal actuator |
| CN2150622Y (en) * | 1993-01-19 | 1993-12-22 | 柯沼贤 | Centrifugal switch base with improved structure |
| CN2200864Y (en) * | 1994-07-16 | 1995-06-14 | 臧怀沛 | Centrifugal contacter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1705051A (en) | 2005-12-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20081210 |