CN202889152U - Single-phase alternating-current permanent magnet motor - Google Patents
Single-phase alternating-current permanent magnet motor Download PDFInfo
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- CN202889152U CN202889152U CN 201220542134 CN201220542134U CN202889152U CN 202889152 U CN202889152 U CN 202889152U CN 201220542134 CN201220542134 CN 201220542134 CN 201220542134 U CN201220542134 U CN 201220542134U CN 202889152 U CN202889152 U CN 202889152U
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Abstract
The utility model belongs to the technical field of the automatic control alternating-current permanent magnet synchronous motor and relates to a single-phase alternating-current permanent magnet motor for an energy-saving refrigerator convection fan. The technical problem to be solved is to overcome the defects of low motor efficiency and poor moisture resistivity and controllability. The single-phase alternating-current permanent magnet motor is characterized in that the single-coil concentrated winding of a stator winding assembly is sleeved to a magnetic bridge iron core to form a winding-containing magnetic bridge iron core assembly, a stator core employs a non-magnetic U-shaped structure with bipolar non-salient poles and a gradual-change uneven air gap, and is integrally connected with the winding-containing magnetic bridge iron core assembly through press fitting to form a closed magnetic circuit, a hall position sensor is arranged on a driver PCB (Printed Circuit Board), the positioning of wiring is at an angle of about 36 degrees away from the center line between the two non-salient poles of the stator core, and the permanent magnet is a deformed injection-molded magnetic steel. The single-phase alternating-current permanent magnet motor is simple in circuit components and low in cost, and capable of self-starting and self-orienting, and has excellent properties such as low temperature rise, moisture resistance, sound and vibration absorption, impedance protection, steady operation, good safety and reliability, long service life and the like.
Description
Technical field
The utility model belongs to autocontrol AC permanent magnet synchronous motor technical field, relates to a kind of single-phase AC permanent-magnet motor; Be particularly related to for the energy-saving refrigerator convection flow fan, with a kind of plastic package structure single-phase AC permanent-magnet motor that exchanges the motor with cup rotor appearance similar.
Background technology
At present, the convection flow fan of most refrigerators is still used salient pole type C type shaded pole motor, and its rotor adopts cage modle skewed slot cast aluminium structure; The C type magnetic circuit of square (or rectangle) is adopted in stator core, and a pair of convex pole is arranged on it, and at each magnetic pole one or more short circuit copper rings that help out being arranged is the split-pole winding; C type magnetic circuit is made of closed circuit the magnetic bridge iron core, at the magnetic bridge iron core the concentrated winding of unicoil being housed is main winding.The magnetic potential that the magnetic potential that produces behind the main winding energization excitation and split-pole winding produce interacts, in air gap, form elliptic rotating field, this elliptic rotating field cutting rotor squirrel-cage bar produces induced potential and induced current, this induced current and elliptic rotating field interact and produce electromagnetic torque, thereby drag rotor by not covered the main pole of part to the direction rotation of the split-pole that is covered part by short-circuited conducting sleeve by short-circuited conducting sleeve.
The advantage that the C type exchanges motor with cup rotor is simple in structure, need not add in addition auxiliary winding and capacitor.But its shortcoming is on principle and structure, and split-pole short-circuited conducting sleeve consumed power is large, rotating speed is with direction is uncontrollable, rotor and stationary part iron core expose, thus have that efficient is low, the defectives such as moisture resistivity and poor controllability.Yet, modern refrigerator convection flow fan is to use under the adverse circumstances that cold and hot temperature alternating, humidity and high frequent start, require the convection flow fan of refrigerator to have high efficiency, low noise, long-life and controllability, its working life will reach more than 100,000 hours.Obviously, the above-mentioned shortcoming of C type shaded pole motor makes it be difficult to satisfy the requirement of modern refrigerator.
Summary of the invention
The purpose of this utility model provides a kind of self-starting, from directed, efficient, moisture resistance, low noise, impedance protection, be applicable to a kind of single-phase AC permanent-magnet motor of modern refrigerator convection flow fan.
For achieving the above object, the technical scheme that adopts is: a kind of single-phase AC permanent-magnet motor, comprise front plastic end cover, rear plastic end cover, and the plastic packaging fuselage and the p-m rotor that are equipped with between described front plastic end cover and the rear plastic end cover, it is characterized in that the built-in stator winding assembly of described plastic packaging fuselage, magnetic bridge iron core, stator core and driver PCB assembly; Be wound with unicoil on the plastic frame of described stator winding assembly and concentrate winding, and it is sleeved on the magnetic bridge iron core, consist of band winding magnetic bridge assembly unshakable in one's determination; Described stator core adopt two utmost point non-salient poles, gradual change non-uniform gap with every the U-shaped structure of magnetic, and the formation closed magnetic circuit that is connected with band winding magnetic bridge assembly press fit unshakable in one's determination; Be equipped with hall position sensor on the pcb board of described driver PCB (Printed Circuit Board) assembly, the cloth line position is at 36 ° of mechanical angles about center line between two non-salient poles of stator core; Described p-m rotor is two extremely different in nature injecting magnetic magnet steel, and front plastic end cover is stretched out in its rotating shaft forward extension.
Described hall position sensor is the EW300E hall position sensor, sets required cloth line position according to contrary the turning to clockwise of motor, at 36 ° of mechanical angle places about center line between two non-salient poles of stator core, and is in leading commutation state when making operation.If motor need clockwise rotate, then orienting station namely turns 36 ° of mechanical angles counterclockwise in the 36 ° of advance angles in center line the right; Otherwise if motor rotates counterclockwise.The orienting station of driver pcb board upper position sensor combines with p-m rotor, stator core element, makes motor energy self-starting, certainly directed.
The lid shell inboard of described front plastic end cover and rear plastic end cover is equipped with respectively oiliness bearing and Fuel Tanking Unit; Described oiliness bearing is for soaking the copper base oil containing bearing of general horse Brunswick (PERMAWICK) lubricant.
The driver PCB assembly of described plastic packaging fuselage is by lightning protection, transformation, rectification, the inversion of H bridge, control and the integrated AC-DC-AC driving control system of each functional unit of position sensing, and wherein voltage transformation unit adopts capacity voltage dropping circuit.The alternating current 220V input voltage, at first through the capacitance decompression of voltage transformation unit, be converted to direct voltage through rectification unit, power supply is to inversion unit; Inversion unit is given the power supply of stator winding alternation under control and the effect of position sensing unit, make the machine operation operation.
Described plastic packaging fuselage is by BMC(Bulk molding compound) thermosetting unsaturated polyester resin mold pressing plastic packaging.
The lid shell material of described front and back plastic end cover is PBT(Poly Butylene Terephthalate) engineering plastics.
Described two extremely different in nature injecting magnetic magnet steel are by the directed magnetization of DMS21 opposite sex injecting magnetic magnetic injection mo(u)lding, and magnetize into two utmost points again.
Described front plastic end cover, plastic packaging fuselage, p-m rotor and rear plastic end cover cooperate successively assembling, adopt the fixed sealing of securing member is general assembly cost New-type electric machine.
The beneficial effects of the utility model are:
(1) gradual change non-uniform gap and magnetic shielding structure are adopted in the stator core of plastic packaging fuselage, and itself and p-m rotor parts are combined, make when being in free state before the electrical power, and the axis of magnet of stator and rotor departs from mutually, avoids " dead point " position.Adopt the gradual change non-uniform gap, to obtain inhomogeneous reluctance torque, generation directional starting torque and direction rotation are in accordance with regulations synthesized in it and p-m rotor torque.
(2) stator winding assembly of plastic packaging fuselage adopts unicoil to concentrate winding to combine with driver PCB assembly, p-m rotor, realizes the all-wave working method of H bridge type inverse power supply.This motor only needs a rotor-position sensor, and its detection rotor magnet steel polarity output signal removes to control drive circuit, and position transducer is divided into two equal states with a commutating period (360 ° of electrical degrees).Under this powered operation mode, be the first half time forward conduction for operating state in commutating period of single-phase stator winding, the conducting of later half time reversal.The magnetic flux interaction that the magnetomotive force that the stator winding electric current produces and p-m rotor produce produces electromagnetic torque, makes the motor rotation.Thereby winding utilization and the operational efficiency of motor have been improved.
(3) be distributed with position transducer on the driver pcb board of plastic packaging fuselage, this motor utilizes a Hall element to realize the electronics commutation, and mobile Hall element can be realized leading commutation or hysteresis commutation.The fixing routing position is at 36 ° of mechanical angle places about center line between two non-salient poles of stator core, and is in leading commutation state when making operation, make motor can self-starting, from directed; Thereby improved the torque ripple of motor; Operational efficiency and stationarity have been improved.
(4) the driver PCB assembly of plastic packaging fuselage is that wherein voltage transformation unit has adopted simple capacity voltage dropping circuit by the integrated AC-DC-AC driving control system of each functional unit of lightning protection, transformation, rectification, inversion, control and position sensing.Electric current is high during motor rotation blockage; capacitance decompression is large; so direct current forces down after the rectification; the inversion unit power loss is little, and again because the ideal capacitance step-down does not consume active power, so the consumed power of the consumed power during this motor rotation blockage during than rated load operation is low; impedance protection effect when so just having played motor rotation blockage; temperature rise is lower than 20 ℃, and the integrated line component of this system is simple, cost is low, and motor safety is reliable, long working life.
(5) the utility model adopts the structure of the p-m rotor parts of the plastic packaging body parts of BMC thermosetting unsaturated polyester resin, different in nature injecting magnetic, the front and rear cover parts of PBT engineering plastics (and band oiliness bearing and Fuel Tanking Unit), with securing member fixed seal assembly, make motor have the performance of moisture resistance, sound-absorbing, vibration damping through assembling.
Description of drawings
Fig. 1 is the utility model contour structures schematic diagram;
Fig. 2 is the utility model decomposition texture schematic diagram;
Fig. 3 is plastic packaging body parts decomposition texture schematic diagram among Fig. 2;
Fig. 4 is front plastic end cover decomposition texture schematic diagram among Fig. 2;
Fig. 5 is driver PCB assembly circuit connection side block diagram;
Fig. 6 is position transducer orienting station schematic diagram.
Among the figure: 10-AC permanent-magnet motor; 21-rear plastic end cover; 22-plastic packaging fuselage; 23-p-m rotor; 24-front plastic end cover; 31-driver PCB assembly; 32-every the U-shaped structure of magnetic; 33-gradual change non-uniform gap; 34-stator core; 35-stator winding assembly; 36-magnetic bridge is unshakable in one's determination; 41-front vinyl cover shell; 42-oil storage felt; 43-oiliness bearing; 44-making leaf spring; 45-plastic cover plate; 61-advance angle; 62-position transducer; 63-angle of retard.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 is the utility model contour structures schematic diagram; Fig. 2 is the decomposition texture schematic diagram of the utility model assembly; Fig. 3 and Fig. 4 are respectively plastic packaging body parts and front plastic end cover decomposition texture schematic diagrames among Fig. 2; Fig. 5 is driver PCB assembly circuit syndeton block diagram; Fig. 6 is position transducer orienting station schematic diagram.
See also Fig. 1,2,3,4,5 and 6.A kind of single-phase AC permanent-magnet motor, four parts that comprise front plastic end cover 24, plastic packaging fuselage 22, p-m rotor 23 and rear plastic end cover 21 is characterized in that described plastic packaging fuselage 22 built-in stator winding assemblies 35, magnetic bridge iron core 36, stator core 34 and driver PCB assembly 31; Be wound with unicoil on the plastic frame of described stator winding assembly 35 and concentrate winding, and be sleeved on the magnetic bridge iron core 36; Two utmost point non-salient poles, gradual change non-uniform gap 33 and combining structure every the U-shaped structure 32 of magnetic are adopted in described stator core 34, with magnetic bridge unshakable in one's determination 36 in conjunction with consisting of closed magnetic circuits; Described p-m rotor 23 is different in nature injecting magnetic magnet steel, its rotating shaft forward extension, stretch out front plastic end cover.
The lid shell inboard of described front plastic end cover 24 and rear plastic end cover 21 is equipped with respectively oiliness bearing 43 and oil storage felt 42; Described oiliness bearing 43 is for soaking the copper base oil containing bearing of general horse Brunswick lubricant.
Be equipped with hall position sensor EW300E on the pcb board of described driver PCB assembly 31, setting motor is 36 ° of mechanical angle places about center line between the stator core non-salient pole along rotating counterclockwise required orienting station.
The lid shell of described front and back plastic end cover 24/21 is made by the injection moulding of PBT engineering plastics.
Described p-m rotor 23 is to utilize the injection moulding of mould magnetization orientation to make by different in nature injection moulding magnetic and rotating shaft.Fill into two utmost points with magnetizing clamp again after making.
Described plastic packaging body parts 22 be by built-in stator core 34, driver PCB assembly 31, magnetic bridge unshakable in one's determination 36 and stator winding assembly 35 by its assembling standard packing after, adopt BMC(Bulk Molding Compound) thermosetting unsaturated polyester resin mold pressing plastic packaging makes.
The driver PCB modular construction block diagram of described plastic packaging fuselage as shown in Figure 5, it is by the integrated AC-DC-AC driving control system of lightning protection, transformation, rectification, H bridge type inverse, control and each functional unit of position sensing.Figure 6 shows that to be distributed with motor on the pcb board along counterclockwise running desired position transducer 62 orienting station schematic diagrames that this orienting station is 36 ° advance angle 61 and angle of retard 63 about center line between the stator core non-salient pole.If motor need clockwise rotate, then position transducer 62 orienting stations are advance angle 61, namely turn counterclockwise 36 °; Need rotate counterclockwise such as motor, otherwise then, position transducer 62 orienting stations are angle of retard 63, namely turn clockwise 36 °.
The utility model AC permanent-magnet motor has self-starting, from directed function; With exchange shaded pole motor compare have moisture resistance, heatproof, sound-absorbing, vibration damping, noise reduction and efficient characteristics.
By JYF AC permanent-magnet motor and ZYF shaded pole asynchronous motor that above-mentioned embodiment is made, under basic identical condition, its Performance Ratio is more as shown in the table:
As seen from the above table, has great energy-saving effect if use the shaded pole asynchronous motor of refrigerator use instead the AC permanent-magnet motor.Under the basic identical condition of load fan blade, voltage/frequency and rotating speed, when 220V/50HZ, Φ 100 fan blade, relative shaded pole asynchronous motor energy-saving effect 67.9%; When 115V/60HZ, Φ 100 fan blade, relative shaded pole asynchronous motor energy-saving effect 58.6%.
Although the utility model discloses as above with preferred embodiment; so it is not to limit the utility model; any those skilled in the art; within not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection range of the present utility model is worked as with being as the criterion that claims were defined.
Claims (7)
1. single-phase AC permanent-magnet motor, comprise front plastic end cover, rear plastic end cover, and the plastic packaging fuselage and the p-m rotor that are equipped with between described front plastic end cover and the rear plastic end cover, it is characterized in that the built-in stator winding assembly of described plastic packaging fuselage, magnetic bridge iron core, stator core and driver PCB assembly; Be wound with unicoil on the plastic frame of described stator winding assembly and concentrate winding, and it is sleeved on the magnetic bridge iron core, consist of band winding magnetic bridge assembly unshakable in one's determination; Described stator core adopt two utmost point non-salient poles, gradual change non-uniform gap with every the U-shaped structure of magnetic, and the formation closed magnetic circuit that is connected with band winding magnetic bridge assembly press fit unshakable in one's determination; Be equipped with hall position sensor on the pcb board of described driver PCB assembly, the cloth line position is at 36 ° of mechanical angles about center line between two non-salient poles of stator core; Described p-m rotor is two extremely different in nature injecting magnetic magnet steel, and front plastic end cover is stretched out in its rotating shaft forward extension.
2. described a kind of single-phase AC permanent-magnet motor according to claim 1, it is characterized in that: the lid shell inboard of described front plastic end cover and rear plastic end cover is equipped with respectively oiliness bearing and Fuel Tanking Unit.
3. described a kind of single-phase AC permanent-magnet motor according to claim 1, it is characterized in that: described hall position sensor is the EW300E hall position sensor.
4. described a kind of single-phase AC permanent-magnet motor according to claim 1; it is characterized in that: the driver PCB assembly of described plastic packaging fuselage is by lightning protection, transformation, rectification, the inversion of H bridge, control and the integrated AC-DC-AC driving control system of each functional unit of position sensing, and wherein voltage transformation unit adopts capacity voltage dropping circuit.
5. described a kind of single-phase AC permanent-magnet motor according to claim 1, it is characterized in that: described plastic packaging fuselage is by BMC thermosetting unsaturated polyester resin mold pressing plastic packaging.
6. described a kind of single-phase AC permanent-magnet motor according to claim 1, it is characterized in that: the lid shell material of described front and back plastic end cover is the PBT engineering plastics.
7. described a kind of single-phase AC permanent-magnet motor according to claim 1 is characterized in that: described two extremely different in nature injecting magnetic magnet steel are for by the directed magnetization of DMS21 opposite sex injecting magnetic magnetic injection mo(u)lding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542134 CN202889152U (en) | 2012-10-23 | 2012-10-23 | Single-phase alternating-current permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220542134 CN202889152U (en) | 2012-10-23 | 2012-10-23 | Single-phase alternating-current permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN202889152U true CN202889152U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220542134 Expired - Lifetime CN202889152U (en) | 2012-10-23 | 2012-10-23 | Single-phase alternating-current permanent magnet motor |
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| Country | Link |
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| CN (1) | CN202889152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618427A (en) * | 2013-10-20 | 2014-03-05 | 叶露微 | Low-cost miniature single-phase permanent magnet brushless direct current motor |
| CN110768412A (en) * | 2019-11-13 | 2020-02-07 | 珠海凯邦电机制造有限公司 | Assembly structure for connecting motor stator and end cover and motor |
-
2012
- 2012-10-23 CN CN 201220542134 patent/CN202889152U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103618427A (en) * | 2013-10-20 | 2014-03-05 | 叶露微 | Low-cost miniature single-phase permanent magnet brushless direct current motor |
| CN103618427B (en) * | 2013-10-20 | 2016-02-10 | 江门市金羚排气扇制造有限公司 | A kind of miniature single-phase permanent brushless DC motor |
| CN110768412A (en) * | 2019-11-13 | 2020-02-07 | 珠海凯邦电机制造有限公司 | Assembly structure for connecting motor stator and end cover and motor |
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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: 20130417 |