CN217388497U

CN217388497U - Miniature disk type motor and water pump thereof

Info

Publication number: CN217388497U
Application number: CN202220448801.4U
Authority: CN
Inventors: 刘俊梅
Original assignee: Dongguan Dingrui Technology Co ltd
Current assignee: Dongguan Hongying Electronic Technology Co ltd
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-09-06
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a miniature disc motor and water pump thereof, miniature disc motor, including the motor body, the motor body includes the base, the base top has still been installed the rotor subassembly, the rotor subassembly includes rotatory turbine, the base facial make-up is equipped with the PCB board that is used for controlling the rotor subassembly to rotate, the PCB board facial make-up is equipped with a plurality of stator coil, rotatory turbine facial make-up is equipped with a plurality of permanent magnet, the base middle part is equipped with well pipe, well intraductal portion has installed the bearing, rotatory turbine middle part has installed the axle core, the axle core inserts inside the bearing; the utility model provides a micro disc type motor and a water pump thereof; the axial height of the motor and the water pump is reduced, the miniaturization and the ultra-thinness of the motor and the water pump are realized, the operation is more stable, the noise is lower, and the efficiency is higher.

Description

Miniature disk type motor and water pump thereof

Technical Field

The utility model relates to a permanent-magnet machine technical field, in particular to miniature disc motor and water pump thereof.

Background

In recent years, with the rise of high-tech products such as numerical control machines, industrial robots, manipulators, electric power-assisted vehicles, computers and peripheral equipment thereof and the requirement of special applications such as tracking systems of radars, satellite antennas and the like, higher performance indexes and thin installation structures are required for servo drive motors. Meanwhile, with the continuous improvement of living standard of people, especially the increasing demand for miniaturization, thinning and low noise of household appliances, new requirements on the structure and the volume of the motor are also provided.

At present, axial fans and centrifugal fans are generally used in the market, and conventional stator slotted radial flux motors are used, wherein a stator core is generally formed by stacking silicon steel sheets and has higher axial height so as to achieve the performance; the motor with the requirement on the axial height space is not suitable for miniature and thin application occasions; further, the conventional stator slotted radial flux motor, which also has an iron core and a cogging, increases iron loss and running cogging torque, thereby resulting in an increase in power consumption, vibration, and noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a miniature disc type motor and a water pump thereof; the axial height of the motor and the water pump is reduced, the miniaturization and the ultra-thinness of the motor and the water pump are realized, the operation is more stable, the noise is lower, and the efficiency is higher.

In order to achieve the purpose, the utility model provides a miniature disc motor, which comprises a motor body, motor body includes the base, the rotor subassembly has still been installed to the base top, the rotor subassembly is including rotatory turbine, the base facial make-up is equipped with and is used for controlling the rotatory PCB board of rotor subassembly, PCB board facial make-up is equipped with a plurality of stator coil, rotatory turbine facial make-up is equipped with a plurality of permanent magnet, the base middle part is equipped with well pipe, well inside the pipe bearing of having installed, the axle core has been installed at rotatory turbine middle part, the axle core inserts inside the bearing.

Preferably, the rotating turbine is provided with a plurality of first grooves, the permanent magnets are fixedly arranged in the first grooves, and the permanent magnets can be fixedly arranged in the first grooves in a bonding mode; the motor body is easier to assemble and simple to assemble.

Preferably, the permanent magnet is a neodymium iron boron material component; the strong magnetism of the neodymium iron boron is utilized; to boost the magnetic flux inside the motor body.

Preferably, the rotating turbine is a metal magnetic conductive material component; the metal magnetic conduction material component can further strengthen the magnetic flux inside the motor body, and the magnetic loss is reduced.

Preferably, the rotating turbine is provided with a plurality of blades, the motor body is applied to a fan, and the rotating turbine is provided with a plurality of blades.

Preferably, the stator coil is a hollow ring winding, and the stator coil is flat and fixedly mounted on the PCB.

Preferably, the permanent magnets and the stator coils are fan-shaped.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the PCB board of the utility model is provided with a plurality of stator coils, a plurality of permanent magnets are arranged above the stator coils, the stator coils and the permanent magnets are arranged correspondingly, and the stator coils drive a rotary turbine fixedly arranged on the permanent magnets to rotate; the design cancels a slotted stator winding of a conventional radial flux motor, adopts a flat coil as a stator coil of the motor and a thin permanent magnet sheet as a permanent magnet, reduces the axial height of the motor to the maximum extent, and realizes flattening, ultra-thinning and miniaturization.

2. The stator coil and the permanent magnet are arranged correspondingly to generate an axial magnetic flux, and the axial magnetic flux is circularly controlled through the PCB, so that the rotating turbine is driven to rotate; the radial acting magnetic field of a conventional motor is replaced, an iron core excitation structure is cancelled, torque pulsation caused by tooth grooves does not exist, and torque output is stable; hysteresis and eddy current loss do not exist, and the motor efficiency is improved; meanwhile, the motor body is large in torque, high in efficiency, large in power density, small in torque fluctuation, stable in operation, lower and smaller in vibration, lower in noise and higher in efficiency.

3. According to the operation principle of the motor body, firstly, the PCB energizes the stator coil, and the energized stator coil generates a vertical magnetic field; secondly, the permanent magnet arranged above the stator coil is provided with a vertical magnetic field; thirdly, the permanent magnet is acted by the force of the stator coil, and the stator coil is fixed on the PCB, and the force is acted mutually, so that the permanent magnet is driven to rotate; finally, the PCB supplies the stator coil current in sequence, so that the motor body rotates regularly.

The utility model also provides a water pump, including above-mentioned a miniature disc motor, the base top still is installed the center, install the sealing washer between base and the center, it has one deck sealant layer to coat on PCB board and the stator coil, be equipped with a plurality of blades on the rotating turbine; the upper cover is also arranged on the middle frame, and a water inlet for water inflow and a water outlet for water outflow are arranged between the middle frame and the upper cover.

Preferably, the water inlet is a cavity between the upper part of the middle frame and the upper cover; the water inlet is located the rotatory turbine top, can increase the area of water inlet, increases into water flow.

1. the utility model adopts the above a miniature disc motor, set up a plurality of impeller, water inlet and delivery port with motor body, repack motor body into the water pump for the draw ratio of water pump is little, and the space is compact, and is small, can satisfy under the special application scene miniaturization, the slim installation requirement to the water pump.

2. The water pump of the utility model has short axial dimension and is suitable for ultra-thin application scenes; the axial suction is large, and the impeller can be well adsorbed.

3. The sealing ring is arranged between the base and the middle frame of the utility model, which can ensure the sealing performance of the water pump and is easy to assemble and produce; the PCB is arranged in the water pump, so that the heat on the PCB can be taken away by circulating water, the temperature on the PCB can be reduced, and the service life of the PCB can be prolonged; the PCB board and the stator coil are coated with the one deck sealing adhesive layer, and the PCB board and the stator coil are favorably insulated, so that the circulating water is prevented from eroding the PCB board and the stator coil, the potential safety hazard is reduced, the size of the water pump can be further reduced by adopting the sealing mode, and the mounting requirements of miniaturization and thinning of the water pump are met.

To sum up, the utility model has the advantages of simple structure, design benefit and motor power density and torque density.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a micro disc water pump provided by the present invention;

fig. 2 is a schematic cross-sectional view of a micro disc water pump provided by the present invention;

fig. 3 is a front exploded schematic view of a miniature disc water pump provided by the present invention;

fig. 4 is a bottom exploded schematic view of a micro disc water pump provided by the present invention;

fig. 5 is a partially exploded schematic view of a micro disc water pump provided by the present invention;

fig. 6 is a schematic structural diagram of the miniature disc water pump with the upper cover removed.

The figure includes:

1. a base; 2. a motor body; 3. a PCB board; 4. a stator coil; 6. a rotating turbine; 61. a permanent magnet; 11. a middle tube; 5. a bearing; 62. a shaft core; 63. a first groove; 41. a second groove; 7. A middle frame; 8. a seal ring; 91. sealing the adhesive layer; 9. an upper cover; 92. a water inlet; 93. and (4) a water outlet.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present embodiment, and it is obvious that the described embodiment is an embodiment of the present invention, not all embodiments. Based on this embodiment in the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work all belong to the protection scope of the present invention.

Example one

Referring to fig. 1 to 4, a first embodiment of the present invention provides a micro disc motor.

As shown in fig. 2, the micro disc motor includes a motor body 2, the motor body 2 includes a base 1, the base 1 is provided with a plurality of connecting through holes for fixedly connecting the motor body 2 with other components, the base 1 is further provided with a plurality of fixing through holes or sealing through holes for fixedly connecting with a housing, and the housing may be a middle frame 7 of the second embodiment; if the motor is used for the fan field, just be equipped with fixing hole on the base 1, if the motor is used for the water pump field, just be equipped with sealed through-hole on the base 1.

As shown in fig. 3, a rotor assembly is further mounted above the base 1, the rotor assembly includes a rotating turbine 6, the base 1 is provided with a PCB 3 for controlling the rotation of the rotor assembly, the PCB 3 is provided with a plurality of stator coils 4, the PCB 3 is used for supplying power to the stator coils 4 and providing a circulating current for the stator coils 4 to control the rotation direction of the rotor assembly and the magnitude of the output rotation torque, the rotating turbine 6 is provided with a plurality of permanent magnets 61, and the permanent magnets 61 and the stator coils 4 are correspondingly arranged; the rotating turbine 6 is rotated by the permanent magnet 61.

Furthermore, the design cancels a slotted stator winding of a conventional radial flux motor, adopts a flat coil as the stator coil 4 of the motor body 2, and adopts a thin permanent magnet sheet as the permanent magnet 61, so that the axial height of the motor body 2 is reduced to the greatest extent, and flattening, ultra-thinning and miniaturization are realized.

Furthermore, the stator coil 4 is arranged corresponding to the permanent magnet 61, generates an axial magnetic flux, and circularly controls the axial magnetic flux through the PCB 3, thereby driving the rotary turbine 6 to rotate; the radial acting magnetic field of a conventional motor is replaced, an iron core excitation structure is cancelled, torque pulsation caused by tooth grooves does not exist, and torque output is stable; hysteresis and eddy current loss do not exist, and the motor efficiency is improved; meanwhile, the motor body 2 is large in torque, high in efficiency, large in power density, small in torque fluctuation, stable in operation, lower and smaller in vibration, lower in noise and higher in efficiency.

As shown in fig. 3 and 4, the motor body 2 further includes a middle tube 11 disposed in the middle of the base 1, a bearing 5 is disposed inside the middle tube 11, a shaft core 62 is disposed in the middle of the rotating turbine 6, and the shaft core 62 is inserted into the bearing 5; the bearing 5 is arranged, so that the friction force of the rotation of the rotating turbine 6 can be reduced, the rotation concentricity of the rotating turbine 6 is ensured, and further, the bearing 5 can adopt a common deep groove ball bearing; furthermore, a thrust ball bearing is arranged at the tail end of the shaft core 62 in the middle pipe 11, so that the friction force between the shaft core 62 and the middle pipe 11 is reduced, the service life is prolonged, and a certain amount of lubricating oil and an oil storage pipeline are stored in the middle pipe 11, so that the effects of lubricating, reducing the friction force and prolonging the service life are achieved.

As shown in fig. 4, a plurality of first grooves 63 are formed in the rotating turbine 6, and the permanent magnet 61 is fixedly installed in the first grooves 63; specifically, the permanent magnet 61 may be fixedly mounted inside the first groove 63 by bonding; the motor body 2 is easier to assemble and simple to assemble.

Further, in the present embodiment, the permanent magnet 61 is a neodymium iron boron material member; the neodymium iron boron has stronger magnetism; furthermore, the rotating turbine 6 is a metal magnetic conductive material component; the metal magnetic conductive material component can further strengthen the magnetic flux inside the motor body 2, and reduce the magnetic loss.

As shown in fig. 2, in the present embodiment, the motor body 2 is applied to a water pump, and the rotating turbine 6 is provided with a plurality of impellers; in other embodiments, the motor body 2 is applied to a fan, and the rotating turbine 6 is provided with a plurality of blades.

As shown in fig. 3 and 4, the stator coil 4 is a hollow ring-shaped winding and has a closed ring-shaped structure, the stator coil 4 is internally provided with a second groove 41, and the stator coil 4 is fixedly mounted on the PCB 3; further, the permanent magnet 61 and the stator coil 4 are fan-shaped.

According to the operation principle of the motor body 2, firstly, the PCB 3 energizes the stator coil 4, and the energized stator coil 4 generates a vertical magnetic field; secondly, the permanent magnet 61 arranged above the stator coil 4 is provided with a vertical magnetic field; thirdly, the permanent magnet 61 is acted by the force of the stator coil 4, and the stator coil 4 is fixed on the PCB 3, and the force is acted mutually, so that the permanent magnet 61 is driven to rotate; finally, the PCB 3 sequentially supplies the stator coils 4 with electric current to achieve regular rotation of the motor body 2.

Example two

Referring to fig. 1 to 6, a second embodiment of the present invention provides a water pump.

As shown in fig. 1 and 2; the miniature disc type motor provided by the first embodiment is applied to a water pump, and the water pump comprises the miniature disc type motor provided by the first embodiment.

As shown in fig. 3 and 4, a middle frame 7 is further installed above the base 1, a sealing ring 8 is installed between the base 1 and the middle frame 7, a layer of sealing adhesive layer 91 is coated on the PCB 3 and the stator coil 4, and a plurality of blades are arranged on the rotary turbine 6; the middle frame 7 is also provided with an upper cover 9, and a water inlet 92 for water inlet and a water outlet 93 for water outlet are arranged between the middle frame 7 and the upper cover 9.

Furthermore, a sealing ring 8 is arranged between the base 1 and the middle frame 7, and the sealing ring 8 can ensure the sealing performance of the water pump, so that the assembly and the production are easy; the PCB 3 is arranged in the water pump, so that the heat on the PCB 3 can be taken away by circulating water, the temperature on the PCB 3 can be reduced, and the service life of the PCB 3 can be prolonged; the coating has one deck sealant layer 91 on PCB board 3 and the stator coil 4, second recess 41 also has the coating one deck sealant layer 91, is favorable to insulating PCB board 3 and stator coil 4, guarantees that the circulating water can not erode PCB board 3 and stator coil 4, reduces the potential safety hazard, adopts above-mentioned sealed mode can further reduce the volume of water pump, satisfies the installation requirement of water pump miniaturization, slimming.

As shown in fig. 5 and 6, the water inlet 92 is a cavity between the upper part of the middle frame 7 and the upper cover 9; the water inlet 92 is positioned above the rotating turbine 6, so that the area of the water inlet 92 can be increased, and the inflow rate of water is increased.

The water pump comprises the miniature disc type motor in the first embodiment, the motor body 2 is provided with the impellers, the water inlet 92 and the water outlet 93, and the motor body 2 is modified into the water pump, so that the length-diameter ratio of the water pump is small, the space is compact, the volume is small, the installation requirements on miniaturization and thinning of the water pump under a special application scene can be met, and further, the water pump is short in axial dimension and suitable for an ultrathin application scene; the axial suction is large, and the impeller can be well adsorbed.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all should be included in the protection scope of the present invention.

Claims

1. A miniature disk motor which characterized in that: including motor body (2), motor body (2) include base (1), the rotor subassembly has still been installed to base (1) top, the rotor subassembly includes rotating turbine (6), base (1) facial make-up is equipped with and is used for controlling rotatory PCB board (3) of rotor subassembly, PCB board (3) facial make-up is equipped with a plurality of stator coil (4), rotating turbine (6) facial make-up is equipped with a plurality of permanent magnet (61), base (1) middle part is equipped with well pipe (11), well pipe (11) inside has installed bearing (5), axle core (62) have been installed at rotating turbine (6) middle part, axle core (62) insert inside bearing (5).

2. A miniature disk motor as set forth in claim 1, wherein: be equipped with a plurality of first recess (63) on rotatory turbine (6), permanent magnet (61) fixed mounting is inside first recess (63).

3. A miniature disk motor as set forth in claim 1, wherein: the permanent magnet (61) is a neodymium iron boron material component.

4. A miniature disk motor as set forth in claim 1, wherein: the rotating turbine (6) is a metal magnetic conductive material component.

5. A miniature disk motor as set forth in claim 1, wherein: the rotating turbine (6) is provided with a plurality of blades.

6. A miniature disk motor as set forth in claim 1, wherein: the stator coil (4) is a hollow annular winding, and the stator coil (4) is fixedly arranged on the PCB (3) in a flat mode.

7. A miniature disk motor as set forth in claim 1, wherein: the permanent magnet (61) and the stator coil (4) are both in a sector shape.

8. A water pump comprising a miniature disc motor according to any one of claims 1 to 7, characterized in that: a middle frame (7) is further arranged above the base (1), a sealing ring (8) is arranged between the base (1) and the middle frame (7), a sealing adhesive layer (91) is coated on the PCB (3) and the stator coil (4), and a plurality of blades are arranged on the rotating turbine (6); the improved water-saving toilet bowl is characterized in that an upper cover (9) is further arranged on the middle frame (7), and a water inlet (92) for water inflow and a water outlet (93) for water outflow are arranged between the middle frame (7) and the upper cover (9).

9. A water pump as claimed in claim 8, wherein: the water inlet (92) is a cavity between the upper part of the middle frame (7) and the upper cover (9).