CN202818043U - Dual-insulating three-phase intermediate frequency induction motor - Google Patents
Dual-insulating three-phase intermediate frequency induction motor Download PDFInfo
- Publication number
- CN202818043U CN202818043U CN 201220355549 CN201220355549U CN202818043U CN 202818043 U CN202818043 U CN 202818043U CN 201220355549 CN201220355549 CN 201220355549 CN 201220355549 U CN201220355549 U CN 201220355549U CN 202818043 U CN202818043 U CN 202818043U
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- armature
- frequency induction
- insulation
- stator
- insulating
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Abstract
The utility model discloses a dual-insulating three-phase intermediate frequency induction motor, comprising an insulating housing, a stator, a stator core, a winding, an armature and an end cap, wherein the stator is mounted inside the insulating housing, the armature is fixed through the end cap and the insulating housing, inside the armature there are provided an armature iron core and an armature axle, between the armature iron core and the armature axle there is provided a first insulating layer, and between the winding and the stator core there is provided a second insulating layer. Between the armature iron core and the armature axle there is provided the first insulating layer, between the winding and the stator core there is provided the second insulating layer, such that the dual-insulating structure enables the induction motor to be longer in service life and high in working efficiency; and the dual-insulating three-phase intermediate frequency induction motor is reasonable in structure design, simple in processing technology, small in motor size, light in weight and good in safety performance.
Description
Technical field
The utility model relates to technical field of motors, is specifically related to a kind of double insulation three-phase mid-frequency induction machine.
Background technology
Three-phase mid-frequency induction machine commonly used all is metal shell on hand held electric tool and the household electrical appliance at present, and armature does not have corresponding insulation protection, normally grounding.Adopt heavy metal shell in order to satisfy the required heat sinking function of motor, has plenty of the employing water-cooled, complex structure, the direct hot pressing interference fit of armature core and armature shaft, the armature shaft cylindrical is thick, the direct interference fit of metal shell and armature core and armature shaft, and this technical scheme is not only gained in weight and cost, also the insulating requirements to motor is higher, and craft precision is not high.If apply on the hand held electric tool too heavyly, volume is difficult for greatly gripping, and is prone to potential safety hazard.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of reasonable in design, processing is simple, cost is low, volume is little, lightweight, reliable operation and the good double insulation three-phase mid-frequency induction machine of fail safe.
For achieving the above object, the utility model provides following technical scheme: a kind of double insulation three-phase mid-frequency induction machine, comprise insulation case, stator, stator core, winding, armature and end cap, described stator is contained in the insulation case, armature is fixed by end cap and insulation case, be provided with armature core and armature shaft in the armature, be provided with the first insulating barrier between described armature core and the armature shaft, be provided with the second insulating barrier between described winding and the stator core.
By adopting technique scheme, the first insulating barrier and the second insulating barrier are set, motor has had the double insulation function, and reasonable in design, processing is simple, cost is low, safe and reliable.
The utility model further is set to: described the first insulating barrier is the BMC thermoset molding bed of material or the thermoplastic moulded bed of material of PPS or the silica gel sheath tubing bed of material.By this setting, the utility model good insulation preformance, volume is little, lightweight, fail safe is good.
The utility model also further is set to: described the second insulating barrier is fish paper.By this setting, processing is simple, and cost is low.
The utility model also further is set to: described armature is squirrel-cage armature, and armature core forms with 0.35mm or the stack of 0.5mm silicon steel sheet.By this setting, armature structure is reasonable in design, makes more stable work, reliable.
The utility model also further is set to: insulation case one end is provided with air-ducting ring, and described air-ducting ring outer end is provided with fan blade, and described fan blade is connected with armature shaft and consists of interlock.By this setting, the utility model work is more reliable.
The utility model also further is set to: described insulation case adopts the manufacturing of enhancing nylon material to form.By this setting, the good insulation preformance of insulation case.
The utility model has the advantages that: by between armature core and armature shaft, being provided with the first insulating barrier, be provided with the second insulating barrier between winding and the stator core, double insulation makes longer, high efficiency and the utility model reasonable in design of induction machine life-span, processing technology is simple, motor volume is little, lightweight, fail safe is good.
The utility model is described in further detail below in conjunction with specification drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the enlarged drawing of I section among Fig. 1;
Fig. 3 is the enlarged drawing of II section among Fig. 1.
Embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, the disclosed a kind of double insulation three-phase mid-frequency induction machine of the utility model, comprise insulation case 1, stator 2, stator core 3, winding 4, armature 5 and end cap 6, described stator 2 is contained in the insulation case 1, armature 5 is fixing with insulation case 1 by end cap 6, be provided with armature core 7 and armature shaft 8 in the armature 5, be provided with the first insulating barrier 9 between described armature core 7 and the armature shaft 8, be provided with the second insulating barrier 10 between described winding 4 and the stator core 3.
Present embodiment Medium frequency induction apparatus for cast-aluminium rotor of electric machine is by one-shot forming or post forming manufacturing process mode, so that armature core 7 increases supplemental dielectric layer between armature shaft 8, i.e. the first insulating barrier 9, the material of described the first insulating barrier 9 is BMC duroplastic moulding materials or PPS thermoplastic molding material or silica gel sleeve pipe etc., can bear sine voltage 2750V/5Ma/1min and not puncture not flashover, meet II class instrument safety requirements.Described the second insulating barrier 10 is fish paper.
Described armature 5 is squirrel-cage armature, and armature core 7 usefulness 0.35mm or the stack of 0.5mm silicon steel sheet form.Stator core 3 adopts 0.35mm or the stack of 0.5mm silicon steel sheet to form, and by the fish paper basic insulation, can bear sine voltage 1250V/5mA/1min and not puncture not flashover between winding 4 and the stator core 3, meets II class instrument safety requirements.
Described insulation case 1 adopts the manufacturing of enhancing nylon material to form.
Operation principle: behind the frequency power supply of stator 2 input three-phase appointments, the stator 2 inner magnetic fields that produce a rotation, magnetic field rotating speed is according to adjusting supply frequency, because the cast aluminium sliver of squirrel-cage armature 5 is case type, so when outside when the magnetic field of rotation is arranged, the cast aluminium sliver will cutting magnetic line and induce electromotive force, closed sliver just has electric current to produce, armature supply and stator rotating magnetic field interact and produce electromagnetic force, and the electromagnetic torque that is produced by electromagnetic force drags armature 5 rotations.Insulation case 1 is packed into behind the stator 2, the fan blade 12 that is contained in armature 5 front ends drives Air Flow under the rotation of armature 5, under the guiding of air-ducting ring 11, the air inlet of air on insulation casing 1 enters, discharge through the air outlet from the end cap 6 between air channel that stator 2 and insulation case 1 forms and the motor gas-gap, the heat that motor produces is discharged, reach cooling effect.
Adopt fish paper to do basic insulation between stator core 3 and the winding 4; add and adopt BMC duroplastic moulding materials or the insulating material such as PPS thermoplastic molding material or silica gel sleeve pipe to do supplementary insulation between armature core 7 and the armature shaft 8; under this double insulated protection; protect user's life safety, exempted the requirement of three phase electric machine metal shell ground connection.
Above-described embodiment is to specific descriptions of the present utility model; only be used for the utility model is further specified; can not be interpreted as the restriction to the utility model protection range, the technician of this area makes some nonessential improvement and adjusts the utility model according to the content of above-mentioned utility model and all falls within the protection range of the present utility model.
Claims (6)
1. double insulation three-phase mid-frequency induction machine, comprise insulation case (1), stator (2), stator core (3), winding (4), armature (5) and end cap (6), described stator (2) is contained in the insulation case (1), armature (5) is fixing by end cap (6) and insulation case (1), be provided with armature core (7) and armature shaft (8) in the armature (5), it is characterized in that: be provided with the first insulating barrier (9) between described armature core (7) and the armature shaft (8), be provided with the second insulating barrier (10) between described winding (4) and the stator core (3).
2. a kind of double insulation three-phase mid-frequency induction machine according to claim 1, it is characterized in that: described the first insulating barrier (9) is the BMC thermoset molding bed of material or the thermoplastic moulded bed of material of PPS or the silica gel sheath tubing bed of material.
3. a kind of double insulation three-phase mid-frequency induction machine according to claim 1, it is characterized in that: described the second insulating barrier (10) is fish paper.
4. according to claim 1 and 2 or 3 described a kind of double insulation three-phase mid-frequency induction machines, it is characterized in that: described armature (5) is squirrel-cage armature, and armature core (7) forms with 0.35mm or the stack of 0.5mm silicon steel sheet.
5. a kind of double insulation three-phase mid-frequency induction machine according to claim 4, it is characterized in that: insulation case (1) one end is provided with air-ducting ring (11), described air-ducting ring (11) outer end is provided with fan blade (12), and described fan blade (12) is connected with armature shaft (8) and consists of interlock.
6. a kind of double insulation three-phase mid-frequency induction machine according to claim 5 is characterized in that: described insulation case (1) adopts and strengthens the nylon material manufacturing and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355549 CN202818043U (en) | 2012-07-20 | 2012-07-20 | Dual-insulating three-phase intermediate frequency induction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220355549 CN202818043U (en) | 2012-07-20 | 2012-07-20 | Dual-insulating three-phase intermediate frequency induction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818043U true CN202818043U (en) | 2013-03-20 |
Family
ID=47876851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220355549 Expired - Lifetime CN202818043U (en) | 2012-07-20 | 2012-07-20 | Dual-insulating three-phase intermediate frequency induction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818043U (en) |
-
2012
- 2012-07-20 CN CN 201220355549 patent/CN202818043U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |