CN201985730U

CN201985730U - Brushless direct-current motor

Info

Publication number: CN201985730U
Application number: CN2011200312698U
Authority: CN
Inventors: 马余洋; 池文茂; 卓春光
Original assignee: Jangmen Idear Hanyu Electrical Joint Stock Co ltd
Current assignee: Hanyu Group JSCL
Priority date: 2011-01-28
Filing date: 2011-01-28
Publication date: 2011-09-21
Anticipated expiration: 2021-01-28

Abstract

The utility model relates to a brushless direct-current motor applicable to a draining pump, which comprises a permanent magnet rotor used for driving rotations of a vane wheel and a stator provided with a stator coil winding. The stator coil winding is an aluminum enameled wire winding which is wound in a coil frame of a stator core, and the aluminum enameled wire winding and the coil frame wound by the aluminum enameled wire winding are sealed in a closed housing case. The housing case can be formed through injection molding, pressure casting and pouring. The brushless direct-current motor solves a welding problem between the aluminum enameled wire winding and an outgoing line, the problem of anticorrosion of the aluminum enameled wire winding is solved, and the application of the aluminum enameled wire winding in the brushless direct-current motor is achieved.

Description

Brshless DC motor

Technical field

The utility model relates to brshless DC motor, and particularly stator coil adopts the brshless DC motor of aluminium enamel-covered wire.

Background technology

Brshless DC motor is mainly by forming with the rotor of permanent magnetic material manufacturing, the stator that has coil windings and circuit board.Because brshless DC motor generally has many group enamelled wire windings, there is Y shape to connect between the enamelled wire winding lead-out wire or △ shape connects, also have between lead-out wire and the automatically controlled plate to be connected, so the welding position is many.The insulation protection of welding position and anti-corrosion protection also require very reliable.

Aluminium enamel-covered wire is applied on the motor, in China research is arranged early.But because aluminium enamel-covered wire is corroded by the Acidity of Aikalinity fog of humidity easily, the anticorrosion that solves the aluminium enamel-covered wire coil is the technical barrier that aluminium enamel-covered wire is used on motor always.Based on above various reasons, brshless DC motor does not also have the practical application of aluminium enamel-covered wire.

Summary of the invention

The purpose of this utility model is to remedy the deficiencies in the prior art, and a kind of brshless DC motor of using the aluminium enamel-covered wire winding is provided, and can solve the anticorrosion problem of aluminium enamel-covered wire coil.

Above-mentioned purpose of the present utility model is to realize like this, a kind of brshless DC motor, comprise permanent magnet rotor that is used for the drives impeller rotation and the stator that the stator coil winding is installed, the winding of described stator coil is the aluminium enamel-covered wire winding, be wound on the bobbin of stator core, and the bobbin of described aluminium enamel-covered wire winding and winding thereof is sealed in the closed shell.

Because the aluminium enamel-covered wire winding is sealed in the closed shell, aluminium enamel-covered wire and wet environment are isolated, not corroded by moist Acidity of Aikalinity fog.

Further, the lead-out wire welding position of described aluminium enamel-covered wire winding is sealed in the described closed shell, can avoid the oxidized and corrosion in welding position.Aluminium enamel-covered wire winding lead-out wire welding position is meant that appearance is zinc-plated, and aluminum steel is welded to the position on the solder joint.

As a kind of execution mode wherein, above-mentioned closed shell is the plastic casing that seals moulding one-tenth according to the profile of the bobbin that is wound with the aluminium enamel-covered wire winding.

Wherein, the leg of described bobbin stretches out in outside the described plastic casing.

The plastic casing that described envelope is being moulded the bobbin that is wound with the aluminium enamel-covered wire winding has three, independently is installed on stator core respectively.

As another kind of execution mode, above-mentioned closed shell is the outer airtight box body of stator that is wrapped in described permanent magnet rotor and the stator coil winding is installed.

Further, the outer surface of described aluminium enamel-covered wire winding and lead-out wire welding position is coated with insulating material.This insulating material is insulation gummed paper or adhesive tape.

Wherein, outside the stator that the stator coil winding is installed of described brshless DC motor was installed in, permanent magnet rotor was interior.

Wherein, the number of poles of motor is not limit, and can be multipole.

The utlity model has following technique effect:

1, described stator coil winding with plastics or resin-sealed after, plastics or resin-case are hedged off from the outer world stator coil winding and lead-out wires of coil welding position, have prevented that effectively the stator coil winding is by salt air corrosion.

2, described stator coil winding and lead-out wire welding position adopt insulating material to coat, insulating material can be isolated Acidity of Aikalinity fog in the wet environment and stator coil, the humid air that also external world can be entered absorbs, and prevents that effectively the stator coil winding is corroded.

3, cost is low, and reliable in quality is made simple possible, can produce in batches.

Brshless DC motor of the present utility model has solved the Welding Problems between aluminium enamel-covered wire and the lead-out wire, has solved the etch-proof problem of aluminium enamel-covered wire winding, has realized the application of aluminium enamel-covered wire at brshless DC motor.After brshless DC motor is used aluminium enamel-covered wire; because the aluminium enamel-covered wire material is lighter than copper enamelled wire; price is more cheap than copper enamelled wire; therefore the cost of material is low; pass through design on the performance; can reach copper enamelled wire peer-level, the aluminium enamel-covered wire winding is by behind the seal protection, and reliability also is not less than the copper enamelled wire.The brshless DC motor of having used aluminium enamel-covered wire of the present utility model can be widely used in the draining pump motor of washing machine, dishwasher draining.

Below in conjunction with accompanying drawing the utility model is elaborated.

Description of drawings

Fig. 1 is the brshless DC motor overall structure figure of the present utility model that is installed on the draining pump;

Fig. 2 is a schematic diagram of not using the preceding stator coil of plastic seal;

Fig. 3 is the schematic diagram with the stator coil after the plastic seal.

Fig. 4 is with the stator coil schematic diagram before the resin embedding;

Fig. 5 is with the stator coil schematic diagram after the resin embedding;

Description of reference numerals: 1, impeller; 2, permanent magnet rotor; 3, the pump housing; 4, stator coil; 5, stator core; 6, bobbin; 7, aluminium enamel-covered wire; 8, bobbin leg; 9, aluminium enamel-covered wire winding lead-out wire welding position; 10, housing; 11, circuit board; 12, loam cake; 13, housing

Embodiment:

Embodiment 1

Fig. 1 has shown the overall structure that is installed on the brshless DC motor of the present utility model on the draining pump.As shown in Figure 1, brshless DC motor of the present utility model comprises permanent magnet rotor 2 that is used for drives impeller 1 rotation and the stator that the stator coil winding is installed.The winding of stator coil is the aluminium enamel-covered wire winding, and the aluminium enamel-covered wire winding is wound on the bobbin 6 of stator core 5, and the bobbin 5 of aluminium enamel-covered wire winding and winding thereof is sealed in the closed shell 10.

Fig. 1 also shown and used draining pump of the present utility model, and this draining pump relies on impeller 1 to rotate draining, and impeller 1 drives by the permanent magnet rotor 2 of brshless DC motor of the present utility model, and permanent magnet rotor 2 relies on the pump housings 3 supports.Stator coil is contained on the stator core 5, and stator core 5 is contained on the pump housing 3, and stator coil and circuit board 11 are by being electrically connected.During work, circuit board feeds electric current in the specific moment by the past stator coil of certain sequential, and stator coil produces rotating magnetic field, drives permanent magnet rotor 2 and rotates, and impeller 1 is along with rotor rotation, thus the realization draining.Wherein, motor circuit plate 11 can be a band control circuit or not with the circuit board of control circuit.

Fig. 2 has shown stator coil 4 sealed situations before.As shown in Figure 2, the aluminium enamel-covered wire winding is wrapped on the bobbin 6 by aluminium enamel-covered wire 7 and forms.Aluminium enamel-covered wire winding lead-out wire welding position 9 is around in bobbin leg 8.Aluminium enamel-covered wire winding lead-out wire welding position 9 is that the zinc-plated aluminum steel of appearance is welded to the position on the solder joint.Before sealed stator coil 4, can coat one or more layers insulation gummed paper at the outer surface of aluminium enamel-covered wire winding and the outer surface of aluminium enamel-covered wire winding lead-out wire welding position 9.

Fig. 3 has shown stator coil 4 situation after sealed.The aluminium enamel-covered wire 7 that is wrapped on the bobbin 6 is sealed by housing 10 behind the coated insulation gummed paper.In example shown in Figure 3, housing 10 is the plastic casings that seal moulding one-tenth according to the profile that is wound with the bobbin 6 of aluminium enamel-covered wire winding, that is to say that plastic packaging plastics outside the bobbin 6 that twines the aluminium enamel-covered wire winding form the plastic packaging plastic casing.Stator coil 4, bobbin 6 and aluminium enamel-covered wire winding lead-out wire welding portion 9 all are sealed in this housing 10.After moulding, bobbin leg 8 envelopes expose to outside the housing 10.

Brshless DC motor in this example, outside its stator was installed in, permanent magnet rotor was interior.Respectively each stator coil and bobbin are carried out plastic packaging, form and be distributed in 3 outer closed shells 10 of rotor.

Embodiment 2

Fig. 4,5 has shown the execution mode that forms the sealing box body with resin embedding stator coil.

Similar to Example 1, the brshless DC motor among Fig. 4 is installed on the draining pump, and the stator coil 4 that is wound with aluminium enamel-covered wire 7 is installed on the stator core 5, and stator core 5 is contained on the pump housing 3.As shown in Figure 4, in the housing that the epoxy resin that the above pump housing 3 that has assembled stator coil 4 and stator core 5 is placed on an opening is made, and then pouring epoxy resin loam cake 12, with airtight box body 13 as shown in Figure 5 of the fixed formation of shedding shell.Be enclosed within the box body 13 except the bobbin 6 and stator core 5 of assembling stator coil 4, also comprise motor circuit plate 11, motor circuit 11 can be a band control circuit or not with the circuit board of control circuit.

In the utility model, the diameter of aluminium enamel-covered wire 7 is equal to or less than 1.0mm.Stator core 5 thickness ranges can be between 10mm-50mm.

In the utility model, be applied on the draining pump as the example explanation, in practicing with brshless DC motor of the present utility model, be not limited to this, except draining pump, also can be applicable in the pump motor of other machines, water utilities circulation, the application scenario is extensive, and applicability is wide.

Claims

1. brshless DC motor, comprise permanent magnet rotor that is used for the drives impeller rotation and the stator that the stator coil winding is installed, it is characterized in that: the winding of described stator coil is the aluminium enamel-covered wire winding, be wound on the bobbin of stator core, and the bobbin of described aluminium enamel-covered wire winding and winding thereof is sealed in the closed shell.

2. brshless DC motor according to claim 1, it is characterized in that: the lead-out wire welding position of described aluminium enamel-covered wire winding is sealed in the described closed shell, the welding position of aluminium enamel-covered wire winding lead-out wire is meant that appearance is zinc-plated, and aluminum steel is welded to the position on the solder joint.

3. brshless DC motor according to claim 1 is characterized in that: described closed shell is the plastic casing that seals moulding one-tenth according to the profile of the bobbin that is wound with the aluminium enamel-covered wire winding.

4. brshless DC motor according to claim 3 is characterized in that: the leg of described bobbin stretches out in outside the described plastic casing.

5. according to claim 3 or 4 described brshless DC motors, it is characterized in that: the plastic casing that described envelope is being moulded the bobbin that is wound with the aluminium enamel-covered wire winding has three, independently is installed on stator core respectively.

6. brshless DC motor according to claim 1 is characterized in that: described closed shell is an outer airtight box body of stator that is wrapped in described permanent magnet rotor and the stator coil winding is installed.

7. brshless DC motor according to claim 2 is characterized in that: the outer surface of described aluminium enamel-covered wire winding and lead-out wire welding position is coated with insulating material.

8. brshless DC motor according to claim 1 is characterized in that: outside the described stator that the stator coil winding is installed was installed in, permanent magnet rotor was interior.