WO2021046993A1

WO2021046993A1 - Silent carbon-brush-free water stirring motor for water stirring device

Info

Publication number: WO2021046993A1
Application number: PCT/CN2019/115466
Authority: WO
Inventors: 刘和生
Original assignee: 刘和生
Priority date: 2019-09-10
Filing date: 2019-11-05
Publication date: 2021-03-18
Also published as: CN110535318A

Abstract

Disclosed is a silent carbon-brush-free water stirring motor for a water stirring device, the water stirring motor comprising a water stirring motor bottom shell (1), wherein an inner cavity of the water stirring motor bottom shell (1) is provided with a water stirring motor chip (2), a water stirring motor coil (3), and a water stirring motor magnet ring (4); the water stirring motor chip (2) is arranged on the bottom face of the water stirring motor bottom shell (1); the water stirring motor coil (3) is arranged on the upper surface of the water stirring motor chip (2); the water stirring motor magnet ring (4) is sheathed on the outer circumference of the water stirring motor coil (3); the top of the water stirring motor bottom shell (1) is provided with a water stirring motor top cover (5); the water stirring motor coil (3) is provided with a water stirring motor rotor (3-1) and a water stirring motor stator (3-2); the water stirring motor rotor (3-1) is arranged on the periphery of the water stirring motor stator (3-2); and the top of the water stirring motor top cover (5) is provided with a Hall switch (5-1). In the silent carbon-brush-free water stirring motor for a water stirring device, the Hall switch starts operation in a driving electric current conversion manner, magnetic conversion work is carried out according to the basic principle whereby like poles repel each other and opposite poles attract each other. The service life is long, noise is avoided, the voltage control range is wide, and the water stirring motor is particularly suitable for the craftwork industry.

Description

Silent water-stirring motor without carbon brush for water-stirring device

Technical field

The invention relates to the technical field of water stirring motors, in particular to a silent water stirring motor without carbon brushes for water stirring devices.

Background technique

The brushless DC motor is composed of a motor body and a driver, and is a typical mechatronic product. The motor stator windings of the motor are mostly made into a three-phase symmetrical star connection, which is very similar to a three-phase asynchronous motor. Magnetized permanent magnets are glued to the motor rotor of the motor. In order to detect the polarity of the motor rotor, a position sensor is installed in the motor. The driver is composed of power electronic devices and integrated circuits. Its function is to receive the start, stop, and brake signals of the motor to control the start, stop and brake of the motor; receive the position sensor signal and the forward and reverse signals to control the reverse The on and off of each power tube of the variable bridge produces continuous torque; accepts speed commands and speed feedback signals to control and adjust the speed; provide protection and display, etc.

DC motors have fast response, large starting torque, and can provide rated torque performance from zero speed to rated speed, but the advantages of DC motors are also its shortcomings, because DC motors have to generate constant rotation under rated load. For torque performance, the armature magnetic field and the motor rotor magnetic field must be maintained at 90° constantly, which requires the use of carbon brushes and commutators. Carbon brushes and commutators will generate sparks and carbon powder when the motor rotates. Therefore, in addition to damage to the components, the use occasions are also restricted. It is precisely because the noise of traditional motors is relatively loud and the carbon brushes are easily broken, there is an urgent need for those skilled in the art to develop a motor with superior performance.

Summary of the invention

technical problem

The solution to the problem

Technical solutions

The technical problem to be solved by the present invention is: in order to solve the above-mentioned problems in the background art, a silent and brushless water stirring motor for a water stirring device is provided, which has a long service life, no noise, and a wide voltage control range.

The technical solution adopted by the present invention to solve the technical problem is: a silent water stirring motor without carbon brush for a water stirring device, comprising a water stirring motor bottom shell, and the inner cavity of the water stirring motor bottom shell has a water stirring motor The chip, the water stirring motor coil and the water stirring motor magnet coil, the stirring motor chip is arranged on the bottom surface of the bottom shell of the stirring motor, and the stirring motor coil is arranged on the upper surface of the stirring motor chip. The water-stirring motor magnet ring is sleeved on the outer circumference of the water-stirring motor coil, the top of the water-stirring motor bottom shell is installed with a water-stirring motor top cover, and the water-stirring motor coil is provided with a water-stirring motor rotor and a water-stirring motor stator. The rotor of the stirring motor is located at the periphery of the stator of the stirring motor, and a Hall switch is arranged on the top of the top cover of the stirring motor.

More specifically, in the above technical solution, there is a gap between the rotor of the stirring motor and the stator of the stirring motor.

More specifically, in the above technical solution, the water stirring motor rotor is composed of four relatively independent quarter-circular cylindrical structures, and the four relatively independent quarter-circular cylindrical structures The cylindrical structure can form a hollow cylinder.

More specifically, in the above technical solution, the four relatively independent quarter circular column structures include two N poles and two S poles, and the N poles and S poles are alternately distributed.

More specifically, in the above technical solution, the water stirring motor stator includes a water stirring motor stator core, four yokes and four teeth, and the four yokes and four teeth are along the water stirring The stator cores of the motor are radially connected, and the yoke is located outside the teeth.

More specifically, in the above technical solution, the outer arc surface of the yoke portion is formed by continuously splicing a plurality of arc surfaces.

More specifically, in the above technical solution, during the rotation of the water stirring motor rotor, the gap between the water stirring motor rotor and the yoke will change.

More specifically, in the above technical solution, during the clockwise rotation of the water stirring motor rotor, at the same position, the gap between the water stirring motor rotor and the yoke gradually becomes smaller.

More specifically, in the above technical solution, during the counterclockwise rotation of the water stirring motor rotor, at the same position, the gap between the water stirring motor rotor and the yoke gradually increases.

More specifically, in the above technical solution, the water stirring motor chip is connected to an external DC power supply through a water stirring motor wire.

The beneficial effects of the invention

Beneficial effect

The beneficial effects of the present invention are: the silent and brushless water stirring motor for the water stirring device provided by the present invention has no carbon brushes in the water stirring motor, the rotor of the water stirring motor is located on the periphery of the water stirring motor stator, and the Hall switch drives the conversion current mode Starting work, using the basic principles of mutual repulsion of the same poles and mutual attraction of different poles to perform magnetic conversion work, with long service life, no noise, wide voltage control range, and wide range of use, especially suitable for the crafts industry.

Brief description of the drawings

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

Fig. 2 is a schematic diagram of an exploded structure of Fig. 1;

Figure 3 is a schematic diagram of the structure of the water stirring motor rotor and the water stirring motor stator;

Figure 4 is a schematic diagram of the structure of the rotor of the stirring water motor;

Fig. 5 is a schematic diagram of the structure of the stator of the stirring water motor;

Figure 6 is a schematic structural diagram of Embodiment 2 of the present invention;

FIG. 7 is a schematic diagram 1 of the exploded structure of FIG. 6;

Fig. 8 is a second schematic diagram of the exploded structure of Fig. 6.

Numbers in the drawings: 1. Stirring motor bottom shell; 2. Stirring motor chip; 3. Stirring motor coil; 3-1, Stirring motor rotor; 3-2, Stirring motor stator; 3-2-1 , Stirring motor stator core; 3-2-2, yoke part; 3-2-3, tooth part; 4. Stirring motor magnet ring; 5. Stirring motor top cover; 5-1, Hall switch; 6 , Stirring motor wire; 7, Fengshui sheet; 7-1, top plate; 7-2, support foot; 7-3, installation sleeve; 8, fan; 8-1, installation post; 9, rubber sleeve; 10. Underframe; 10-1, chassis; 10-1-1, ring groove; 10-2, claws.

The best embodiment for implementing the invention

The best mode of the present invention

In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

In the description of the present invention, it should be understood that the terms "one side", "the other side", "both sides", "between", "middle", "upper end", "lower end", etc. indicate the orientation or The positional relationship is based on the position or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it cannot be understood as a limitation to the present invention.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood under specific circumstances.

Example 1

See Figure 1, Figure 2, Figure 3, Figure 4 and Figure 5. A silent and brushless water stirring motor for a water stirring device of the present invention includes a water stirring motor bottom shell 1 and an inner cavity of the water stirring motor bottom shell 1 There are a stirring motor chip 2, a stirring motor coil 3, and a stirring motor magnet ring 4. The stirring motor chip 2 is arranged on the bottom surface of the stirring motor bottom shell 1, and the stirring motor coil 3 is arranged on the bottom of the stirring motor chip 2. On the upper surface, the water stirring motor magnet ring 4 is sleeved on the outer circumference of the water stirring motor coil 3, the water stirring motor top cover 5 is installed on the top of the water stirring motor bottom shell 1, and the water stirring motor coil 3 has a water stirring motor rotor 3-1 and the stirring motor stator 3-2, the stirring motor rotor 3-1 is located at the periphery of the stirring motor stator 3-2. The water stirring motor rotor 3-1 is a rotating body supported by bearings. The main function of the water stirring motor rotor 3-1 is to be cut by magnetic lines in the rotating magnetic field to generate an output current. The stirring motor stator 3-2 is a stationary part, and the main function of the stirring motor stator 3-2 is to generate a rotating magnetic field.

The top cover 5 of the stirring motor is provided with a Hall switch 5-1. Hall switch 5-1 has the characteristics of non-contact, low power consumption, long service life, high response frequency, etc. The internal use of epoxy resin sealing and potting is integrated, so it can work reliably in various harsh environments.

The water stirring motor chip 2 integrates a CMOS control circuit and a DMOS power device, which can be used to form a complete motion control system with the main processor, motor and incremental encoder. The cross section of the water stirring motor chip 2 is a regular octagonal structure, and the water stirring motor chip 2 is connected to an external DC power supply through the water stirring motor wire 6. There is a gap between the stirring motor rotor 3-1 and the stirring motor stator 3-2.

The water stirring motor rotor 3-1 is composed of four relatively independent quarter-circular cylindrical structures, and four relatively independent quarter-circular cylindrical structures can form a hollow cylinder. Four relatively independent quarter circular cylindrical structures include two N poles and two S poles, and the N poles and S poles are alternately distributed.

The water stirring motor stator 3-2 includes the water stirring motor stator core 3-2-1, four yoke parts 3-2-2 and four tooth parts 3-2-3, four yoke parts 3-2-2 and four The two tooth parts 3-2-3 are connected along the radial direction of the water stirring motor stator core 3-2-1, and the yoke part 3-2-2 is located outside the tooth part 3-2-3, of which four tooth parts 3 -2-3 is uniformly arranged in the radial direction of the stator core 3-2-1 of the stirring motor, and each tooth 3-2-3 has a yoke 3-2-2 outside.

The outer circular arc surface of the yoke 3-2-2 is formed by continuous splicing of multiple circular arc surfaces. During the rotation of the stirring motor rotor 3-1, the gap between the stirring motor rotor 3-1 and the yoke 3-2-2 changes. During the clockwise rotation of the water stirring motor rotor 3-1, at the same position, the gap between the water stirring motor rotor 3-1 and the yoke 3-2-2 gradually becomes smaller. During the counterclockwise rotation of the water stirring motor rotor 3-1, at the same position, the gap between the water stirring motor rotor 3-1 and the yoke 3-2-2 gradually increases.

There is no carbon brush in the water stirring motor. The rotor 3-1 of the water stirring motor is located on the periphery of the stator 3-2 of the water stirring motor. The principle of mutual attraction, magnetic conversion work, long service life, no noise, wide voltage control range, wide range of use, especially suitable for the crafts industry.

Example 2

As shown in Figure 6, Figure 7 and Figure 8, compared with Example 1, the difference lies in the following: the silent and carbon-brushless water stirring motor for a water stirring device of the present invention also includes a feng shui blade 7, a fan 8, and a rubber sleeve 9. And the bottom frame 10, the bottom frame 10 includes a chassis 10-1 and a claw 10-2, the claws 10-2 are integrally arranged in a pair on the lower surface of the chassis 10-1, and the claws 10-2 are used to clamp the water mixing motor The bottom shell 1, the outer contour of the chassis 10-1 is circular, the rubber sleeve 9 is buried in the ring groove 10-1-1 on the upper part of the chassis 10-1, and the fan 8 is installed in the middle position of the chassis 10-1. The piece 7 includes a top plate 7-1, a supporting leg 7-2 and a mounting sleeve 7-3. The top plate 7-1 is square, and the supporting leg 7-2 has a structure with a thick top diameter and a thin bottom diameter. Four supporting legs 7- 2 Integratedly arranged at the four corners of the lower surface of the top plate 7-1, the mounting sleeve 7-3 is integrally arranged at the center position of the lower surface of the top plate 7-1, and the four supporting feet 7-2 are installed on the chassis 10-1 , The mounting post 8-1 at the top of the fan 8 is clamped in the inner hole of the mounting sleeve 7-3.

The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Anyone familiar with the technical field within the technical scope disclosed by the present invention, according to the technology of the present invention Equivalent replacements or changes to the scheme and its inventive concept should all fall within the protection scope of the present invention.

Claims

A silent water stirring motor without carbon brush for a water stirring device, which is characterized in that it comprises a water stirring motor bottom shell (1), and the inner cavity of the water stirring motor bottom shell (1) has a water stirring motor chip (2). ), a stirring motor coil (3) and a stirring motor magnet ring (4), the stirring motor chip (2) is arranged on the bottom surface of the stirring motor bottom shell (1), and the stirring motor coil ( 3) Set on the upper surface of the stirring motor chip (2), the stirring motor magnet ring (4) is sleeved on the outer circumference of the stirring motor coil (3), and the bottom shell (1) of the stirring motor The top cover (5) of the stirring motor is installed on the top, and the stirring motor coil (3) is provided with a stirring motor rotor (3-1) and a stirring motor stator (3-2). The stirring motor rotor (3) -1) Located at the periphery of the stirring motor stator (3-2), a Hall switch (5-1) is arranged on the top of the stirring motor top cover (5).
A silent, brushless, brushless water stirring motor for water stirring devices according to claim 1, characterized in that: the water stirring motor rotor (3-1) and the water stirring motor stator (3-2) There is a gap between.
The silent and brushless water stirring motor for water stirring device according to claim 1, characterized in that: the water stirring motor rotor (3-1) consists of four relatively independent quarter-rings It is composed of a cylindrical structure, and the four relatively independent quarter-circular cylindrical structures can form a hollow cylinder.
According to claim 3, a silent and brushless water stirring motor for water stirring device, characterized in that: the four relatively independent quarter circular cylindrical structures include two N poles and Two S poles, and N poles and S poles are alternately distributed.
The silent and brushless water stirring motor for water stirring device according to claim 1, characterized in that: the water stirring motor stator (3-2) comprises a water stirring motor stator core (3-2-1) , Four yokes (3-2-2) and four teeth (3-2-3), the four yokes (3-2-2) and four teeth (3-2-3) ) Are connected along the radial direction of the stator core (3-2-1) of the stirring motor, and the yoke part (3-2-2) is located outside the tooth part (3-2-3).
The silent and brushless water stirring motor for water stirring device according to claim 5, characterized in that: the outer arc surface of the yoke (3-2-2) is continuously spliced by a plurality of arc surfaces Become.
The silent and brushless water stirring motor for water stirring device according to claim 6, wherein the water stirring motor rotor (3-1) is rotating during the rotation of the water stirring motor rotor (3-1). ) And the gap between the yoke (3-2-2) will change
The silent and brushless water stirring motor for water stirring device according to claim 7, characterized in that: the rotor (3-1) of the water stirring motor rotates clockwise, at the same position, stirring water The gap between the motor rotor (3-1) and the yoke (3-2-2) gradually becomes smaller.
The silent and brushless water stirring motor for water stirring device according to claim 7, characterized in that: the rotor (3-1) of the water stirring motor rotates counterclockwise at the same position when the water is stirred The gap between the motor rotor (3-1) and the yoke (3-2-2) gradually increases.
The mute brushless water stirring motor for water stirring device according to claim 1, characterized in that: the water stirring motor chip (2) is connected to an external DC power supply through a water stirring motor wire (6).