CN207819718U - Single phase ac moulds magnetic micromotor - Google Patents

Abstract

The utility model is related to a kind of single phase acs to mould magnetic micromotor, the stator winding assembly includes winding coil and stator core, the shape of stator core is U-shaped, including yoke portion and two arms being oppositely arranged, it is fitting to connection integrally by dovetail groove and dovetails between yoke portion and arm, the arm includes linking arm and is set to the pole pawl of the end of linking arm, opposite to each other to form the space for accommodating rotor, the winding coil is wound on the linking arm of stator core pole pawl on two arms；The driver PCB components are to be integrated in the friendship constituted on control panel by lightning protection circuit, transforming circuit, rectification circuit, H-bridge inverter circuit, control circuit and position sensor directly to hand over driving control system；The rotor is plastic magnetic rotor.Moisture resistance, low noise, controllable, efficient, the single phase ac modeling magnetic micromotor suitable for refrigerator convection flow fan.

Description

Single phase ac moulds magnetic micromotor

Technical field

The utility model is related to autocontrol AC permanent magnet synchronous motor technical field, specific and a kind of single-phase AC permanent-magnet electricity Motivation；More particularly to it is used for energy-saving refrigerator convection flow fan, a kind of similar plastic package structure of motor with cup rotor shape to be single-phase with exchanging AC permanent magnet motor.

Background technology

Currently, the convection flow fan of most refrigerators is divided into salient pole still using exchange shaded-pole motor by stator contour structures Formula shaded-pole motor and hidden pole type shaded-pole motor.Refrigerator convection flow fan used is salient pole type c-type shaded-pole motor, and rotor is adopted With cage modle skewed slot cast aluminum construction；Stator core is using rectangular（Or rectangle）C-type magnetic circuit, have a pair of of convex pole thereon, each There is the short-circuit copper ring i.e. split-pole winding that one or more help out on magnetic pole；C-type magnetic circuit be made of magnetic bridge iron core it is closed circuit, Unicoil concentratred winding, that is, main winding is housed on magnetic bridge iron core.The magnetic potential generated after main winding energization excitation is generated with split-pole winding Magnetic potential interaction, elliptic rotating field is formed in air gap, this elliptic rotating field cutting rotor squirrel-cage bar generate induction Potential and induced current, which generates electromagnetic torque with elliptic rotating field interaction, to drag rotor by not The main pole for being short-circuited ring house portions is rotated to the direction for the split-pole for being short-circuited ring house portions.

The advantages of c-type exchange motor with cup rotor is simple in structure, does not have to another plus pays winding and a capacitor.But the disadvantage is that in original In reason and structure, split-pole short-circuited conducting sleeve consumption power is big, rotating speed and direction are uncontrollable, rotor and stationary part iron core are exposed, therefore The defects of there are efficiency low, moisture resistivity and poor controllability.

Modern refrigerator with convection flow fan is made under the adverse circumstances that cold and hot temperature alternating, humidity and high frequent start With, it is desirable that there is high efficiency, low noise, long-life and controllability.Obviously, the shortcomings that c-type shaded-pole motor, makes it be difficult to meet The technology requirement of modern refrigerator.

China was put forward for the first time the planning of " energy-saving and emission-reduction " in Eleventh Five-Year Plan outline, in " 12th Five-Year Plan " in 2012 In planning, then more refinement and the data target for energy-saving and emission-reduction of every profession and trade, wherein in " terminal with can energy efficiency of equipment ", especially The energy efficiency index of refrigerator in white domestic appliances is referred to, 3%-9% is reduced.Obviously, the above-mentioned disadvantage of c-type shaded-pole motor makes It is extremely difficult to moisture resistance, low noise and efficient requirement.

In addition, the output rotating speed of conventional motors changes with the variation of input voltage, with motor export it is different Countries and regions need to be transformed motor, to adapt to local AC-input voltage, it is corresponding need to increase or decrease it is defeated Go out rotating speed.All it is inefficient to the versatility of product, production and inventory.

Invention content

The purpose of this utility model is to provide a kind of moisture resistance, low noise, controllable, efficient, is suitable for refrigerator convection flow fan Single phase ac mould magnetic micromotor.

In order to achieve the above objectives, the technical solution adopted is that：

A kind of single phase ac modeling magnetic micromotor, it includes fuselage, rotor, wound stator component, driver PCB groups Part, drive end bearing bracket and rear end cap, the fuselage are tightly connected with drive end bearing bracket, rear end cap respectively, the both ends point of the rotor Drive end bearing bracket is not fastened on, among rear end cap by bearing, is located in fuselage, and before extending outside rotor intermediate rotary shaft one end End cap, the wound stator are arranged with rotor engagement in fuselage, and driver is provided on the outside of the wound stator component Component, and actuator assembly is located in fuselage；The stator winding assembly includes winding coil and stator core, stator iron The shape of core is U-shaped, including yoke portion and two arms being oppositely arranged, passes through dovetail groove and dovetails between yoke portion and arm It is fitting to connection integrally, the arm includes linking arm and is set to the pole pawl of the end of linking arm, on two arms Opposite to each other to form the space for accommodating rotor, the winding coil is wound on the linking arm of stator core pole pawl； The driver PCB components be by lightning protection circuit, transforming circuit, rectification circuit, H-bridge inverter circuit, control circuit with And position sensor is integrated in the cross-straight-intersection driving control system constituted on control panel；The rotor is plastic magnetic rotor.

Above-mentioned technical proposal is improved further and is refined, the position sensor is distributed in driver PCB groups On part, wire location 36 ° of mechanical angles of center line or so between the pole pawl of stator core.

Above-mentioned technical proposal is improved further and is refined, the position sensor is EW300E hall positions Sensor.

Above-mentioned technical proposal is improved further and is refined, the fuselage is by stator winding assembly and driver It is constituted with BMC unsaturated polyester resin plastic packagings after the assembling of PCB components.

Above-mentioned technical proposal is improved further and is refined, the bearing is the copper-based of leaching permawick lubricant Oiliness bearing.

Above-mentioned technical proposal is improved further and is refined, the both sides end cap is all made of PBT engineering plastics note It is moulded into type.

Above-mentioned technical proposal is improved further and is refined, the magnet steel of the rotor is that magnetic is moulded in two poles.

The utility model has the beneficial effects that：

The space of the end of coil windings is utilized, under conditions of within the scope of the development length that yoke portion is located at linking arm, Realize that the connection between yoke portion and linking arm, this set will not increase the length of motor, keep the structure of motor compacter.

Stator winding assembly is combined the all-wave, it can be achieved that H bridge type power supply using twin coil winding with driver PCB components Working method, to improve the winding utilization and operational efficiency of this motor.

The position of position sensor, center of the wire location between the hidden tooth of stator core are distributed on driver pcb board 36 ° of mechanical angles of line or so, if motor rotates clockwise, sensor does not dislike position 36 ° of mechanical angles on the right of center line i.e. inverse Hour hands turn 36 °；It is on the contrary if motor rotates counterclockwise.The position of position sensor and orientation wiring are combined with other components Enable to be in advanced commutation state when motor self-starting, self orientation and orientation operation, so as to improve the torque ripple of motor；It carries High operational efficiency.

The transforming circuit that is designed on driver pcb board, rectification circuit, H-bridge inverter circuit, control circuit form pressure regulation together The alternating current of the wide-voltage range of input is converted to the direct current of fixed amplitude by circuit, to ensure stable output.

Before and after the plastic packaging body parts of BMC unsaturated polyester resins, modeling magnetic p-m rotor component, PBT engineering plastics Cover members and its structure with oiliness bearing are consolidated with fastener through general assembly and are sealed, and motor is made to have moisture resistance, sound-absorbing, vibration damping Performance.

Description of the drawings

Fig. 1 is single phase ac modeling magnetic micromotor structural front view.

Fig. 2 is single phase ac modeling magnetic micromotor the structure left view.

Fig. 3 is single phase ac modeling magnetic micromotor structure right view.

Fig. 4 is stator winding assembly structural schematic diagram.

Fig. 5 is driver PCB component structure diagrams.

01 rotor of figure middle fuselage, 02 wound stator component, 03 04 drive end bearing bracket of driver PCB components, 05 rear end cap 06 07 yoke portion of winding coil, 09 arm, 08 dovetail groove, 11 dovetails, 12 pole pawl 10 accommodates the space 13 of rotor.

Specific implementation mode

Such as Fig. 1-5, a kind of single phase ac modeling magnetic micromotor, it includes fuselage 01, rotor 02, wound stator component 03, driver PCB components 04, drive end bearing bracket 05 and rear end cap 06, the fuselage 01 are close with drive end bearing bracket 05, rear end cap 06 respectively Envelope connection, the both ends of the rotor 02 are fastened on drive end bearing bracket 05, among rear end cap 06 by bearing respectively, are located at fuselage In 01, and extend drive end bearing bracket 05 outside 02 intermediate rotary shaft one end of rotor, the wound stator 03 is equipped with rotor 02 In fuselage 01,03 outside of wound stator component is provided with actuator assembly 04, and actuator assembly 04 is located at fuselage 01 It is interior；The stator winding assembly 03 includes winding coil 07 and stator core, and the shape of stator core is U-shaped, including yoke Portion 09 and two arms 08 being oppositely arranged are fitting to connection between yoke portion 09 and arm 08 by dovetail groove 11 and dovetails 12 Integrally, the arm 08 includes linking arm and the pole pawl 10 for the end for being set to linking arm, the pole pawl on two arms 10 opposite to each other to form the space 13 for accommodating rotor, and the winding coil 07 is wound in the linking arm of stator core On；The driver PCB components 04 are by lightning protection circuit, transforming circuit, rectification circuit, H-bridge inverter circuit, control electricity Road and position sensor are integrated in the cross-straight-intersection driving control system constituted on control panel；The rotor 02 is that modeling magnetic turns Son；The position sensor is distributed on driver PCB components 04, and wire location center line between the pole pawl of stator core is left Right 36 ° of mechanical angles.；The position sensor is EW300E hall position sensors；The fuselage 01 is by stator winding Component 03 is constituted after being assembled with driver PCB components 04 with BMC unsaturated polyester resin plastic packagings；The bearing is leaching Pu Mawei The copper-based oiliness bearing of gram lubricant；The drive end bearing bracket 05, rear end cap 06 are all made of PBT engineering plastics injection moldings；It is described Rotor 02 magnet steel be two poles mould magnetic.

Due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for the common of the art For technical staff, without departing from the principle of this utility model, several improvement, retouching or variation can also be made, Above-mentioned technical characteristic can be combined in the right way；These improve retouching, variation or combination, or it is not improved will be real Other occasions are directly applied to novel design and technical solution, are regarded as the scope of protection of the utility model.

Claims (7)

1. a kind of single phase ac moulds magnetic micromotor, it include fuselage, rotor, wound stator component, driver PCB components, Drive end bearing bracket and rear end cap, the fuselage are tightly connected with drive end bearing bracket, rear end cap respectively, and the both ends of the rotor lead to respectively It crosses bearing and is fastened on drive end bearing bracket, among rear end cap, be located in fuselage, and extend front end outside rotor intermediate rotary shaft one end Lid, the wound stator are arranged with rotor engagement in fuselage, and driver group is provided on the outside of the wound stator component Part, and actuator assembly is located in fuselage；It is characterized in that：The stator winding assembly includes winding coil and stator iron Core, the shape of stator core are U-shaped, including yoke portion and two arms being oppositely arranged, pass through dovetail between yoke portion and arm Slot is fitting to connection integrally with dovetails, and the arm includes linking arm and is set to the pole pawl of the end of linking arm, and two For pole pawl on a arm opposite to each other to form the space for accommodating rotor, the winding coil is wound in stator core On linking arm；The driver PCB components are by lightning protection circuit, transforming circuit, rectification circuit, H-bridge inverter circuit, control Circuit and position sensor processed are integrated in the cross-straight-intersection driving control system constituted on control panel；The rotor is that modeling magnetic turns Son.

2. a kind of single phase ac according to claim 1 moulds magnetic micromotor, it is characterised in that：The position sensing Device is distributed on driver PCB components, wire location 36 ° of mechanical angles of center line or so between the pole pawl of stator core.

3. a kind of single phase ac according to claim 2 moulds magnetic micromotor, it is characterised in that：The position sensing Device is EW300E hall position sensors.

4. a kind of single phase ac according to claim 1 moulds magnetic micromotor, it is characterised in that：The fuselage is by fixed Sub- winding assembly is constituted with after the assembling of driver PCB components with BMC unsaturated polyester resin plastic packagings.

5. a kind of single phase ac according to claim 1 moulds magnetic micromotor, it is characterised in that：The bearing is leaching The copper-based oiliness bearing of permawick lubricant.

6. a kind of single phase ac according to claim 1 moulds magnetic micromotor, it is characterised in that：The both sides end cap It is all made of PBT engineering plastics injection moldings.

7. a kind of single phase ac according to claim 1 moulds magnetic micromotor, it is characterised in that：The magnetic of the rotor Steel is that magnetic is moulded in two poles.