CN215733890U

CN215733890U - Permanent magnet brushless direct current motor with good heat dissipation effect

Info

Publication number: CN215733890U
Application number: CN202121270968.8U
Authority: CN
Inventors: 吴建国
Original assignee: Yueqing Wulin Electric Industrial Co ltd
Current assignee: Yueqing Wulin Electric Industrial Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-02-01
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a permanent magnet brushless direct current motor with good heat dissipation effect, which comprises an outer shell, wherein an inner shell is arranged in the outer shell, an output shaft is rotatably arranged in the inner shell, two ends of the output shaft both extend out of the inner shell, one end of the output shaft extends out of the outer shell, one end of the output shaft, which is positioned in the outer shell, is fixedly provided with an air suction fan blade, an air inlet hole is formed in the inner wall of one side of the outer shell, which is close to the air suction fan blade, a dustproof filter screen is fixedly arranged in the air inlet hole, an air outlet hole is formed in the inner wall of one side of the outer shell, which is far away from the dustproof filter screen, and a spiral infusion tube is fixedly arranged on the outer wall of the inner shell. The motor cooling device is reasonable in design, good in practicability, capable of performing air cooling heat dissipation, water cooling heat dissipation and heat transfer heat dissipation on the interior of the motor at the same time, good in cooling effect on the motor, high in cooling efficiency, capable of preventing parts in the motor from being damaged due to high temperature, capable of guaranteeing stable work of the motor and prolonging the service life of the motor.

Description

Permanent magnet brushless direct current motor with good heat dissipation effect

Technical Field

The utility model relates to the technical field of permanent magnet brushless direct current motors, in particular to a permanent magnet brushless direct current motor with a good heat dissipation effect.

Background

The permanent magnet brushless direct current motor is a direct current motor with a magnetic field established by one or more permanent magnets, the performance of the permanent magnet brushless direct current motor is similar to that of a separately excited direct current motor with constant exciting current, the speed can be conveniently adjusted by changing armature voltage, the permanent magnet brushless direct current motor has the advantages of small volume, high efficiency, simple structure, less copper consumption and the like, and is the main type of a low-power direct current motor.

However, in the prior art, a conventional permanent magnet brushless dc motor does not have a good heat dissipation effect, and has a low heat dissipation efficiency, and since the permanent magnet brushless dc motor can generate a large amount of heat inside in the working process, the generated heat is not easy to dissipate inside the motor, and parts inside the motor are easily damaged due to high temperature, the service life of the permanent magnet brushless dc motor is shortened, and therefore, a permanent magnet brushless dc motor with a good heat dissipation effect is provided for solving the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the permanent magnet brushless direct current motor with good heat dissipation effect, and solves the problems.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: a permanent magnet brushless direct current motor with good heat dissipation effect comprises an outer shell, wherein an inner shell is arranged in the outer shell, an output shaft is rotatably arranged in the inner shell, two ends of the output shaft both extend out of the inner shell, one end of the output shaft extends out of the outer shell, a suction fan blade is fixedly arranged at one end of the output shaft positioned in the outer shell, an air inlet hole is formed in the inner wall of one side of the outer shell close to the suction fan blade, a dustproof filter screen is fixedly arranged in the air inlet hole, an air outlet hole is formed in the inner wall of one side of the outer shell far away from the dustproof filter screen, a spiral liquid conveying pipe is fixedly arranged on the outer wall of the inner shell, three heat dissipation ribs are fixedly arranged on the outer wall of the outer shell in an equidistant annular arrangement mode, a fixing seat is fixedly arranged on the inner wall of the bottom of the outer shell, a liquid storage cavity and a liquid suction cavity are formed in the fixing seat, one side of the liquid suction cavity is provided with an opening, and two ends of the spiral liquid conveying pipe are fixedly connected with the top of the fixing seat, the one end of spiral transfer line extends to the stock solution intracavity, the other end of spiral transfer line communicates with imbibition intracavity portion, same imbibition hole has been seted up on the one side inner wall that stock solution chamber and imbibition chamber are close to each other, the imbibition intracavity is provided with the piston board, the inner wall sliding seal contact of piston board and imbibition chamber, one side fixed mounting of piston board has the horizontal pole, the one end of horizontal pole extends to and inhales the outer and fixed mounting of imbibition chamber and has the push pedal, one side fixed mounting of push pedal establishes the spring on the horizontal pole, the one end of push pedal and one side fixed connection of fixing base are kept away from to the spring, be provided with drive assembly in the shell body, three heat dissipation muscle, spiral transfer line and fixing base are all made by the aluminum product that the heat conductivity is good.

Preferably, the transmission assembly comprises a driving bevel gear, a positioning seat, a driven bevel gear, a transmission shaft and a cam, the driving bevel gear is fixedly sleeved on the output shaft, the positioning seat is fixedly installed on one side, close to the suction fan blade, of the inner shell, the transmission shaft is rotatably installed on the positioning seat, the driven bevel gear is fixedly installed at the top end of the transmission shaft, the cam is fixedly installed at the bottom end of the transmission shaft, and the cam is in contact with one side, far away from the cross rod, of the push plate.

Preferably, equidistant fixed mounting has a plurality of heat conduction poles on the bottom inner wall in stock solution chamber, and the bottom of a plurality of heat conduction poles all extends to outside the shell, and the bottom of a plurality of heat conduction poles all with a heat dissipation muscle fixed connection in the three heat dissipation muscle, a plurality of heat conduction poles all are made by the aluminum product that the heat conductivity is good.

Preferably, the top and the bottom of the inner shell are both fixedly provided with two fixing columns, and one ends of the four fixing columns, far away from the inner shell, are both fixedly connected with the inner wall of the outer shell.

Preferably, a first one-way valve is fixedly arranged in the liquid suction hole, and a second one-way valve is fixedly arranged in the spiral infusion tube.

Preferably, the number of ventholes is a plurality of, and a plurality of ventholes use the output shaft to be equidistant annular arrangement as the center.

(III) advantageous effects

The utility model provides a permanent magnet brushless direct current motor with a good heat dissipation effect. The method has the following beneficial effects:

(1) this permanent magnet brushless DC motor that radiating effect is good, it is rotatory through utilizing the output shaft to drive the suction fan leaf, can be in external air suction shell, can avoid in dust impurity gets into the shell through setting up dustproof filter screen, the inside hot-air that produces of shell can be discharged from a plurality of ventholes for the inside circulation of air of shell, can realize carrying out effectual forced air cooling heat dissipation to the motor.

(2) The permanent magnet brushless direct current motor with good heat dissipation effect utilizes the meshing transmission of the driving bevel gear and the driven bevel gear, the cam can be controlled to rotate, by utilizing the rotation of the cam and matching with the elastic force action generated by the spring, the piston plate can be controlled to horizontally reciprocate in the liquid suction cavity, so that the cooling liquid in the liquid storage cavity is sucked into the liquid suction cavity and then flows back into the liquid storage cavity through the spiral liquid conveying pipe, and in the process of circulating flow of the cooling liquid in the spiral liquid conveying pipe, a part of the heat inside the outer shell and a part of the heat generated on the inner shell can be absorbed, and by using a plurality of heat conduction rods, make the heat in the coolant liquid carry out the radiating effect of heat transfer to the coolant liquid in a plurality of heat conduction poles and heat dissipation muscle transmission to the outside air to can realize carrying out effectual water-cooling heat dissipation cooling's effect to the motor.

(3) This permanent magnet brushless DC motor that radiating effect is good through utilizing three heat dissipation muscle for some heat in the shell body can realize carrying out the radiating effect of heat transfer to the motor in through shell body and heat dissipation muscle transmission to the outside air, thereby through carrying out the forced air cooling heat dissipation, water-cooling heat dissipation and heat transfer heat dissipation to motor inside simultaneously, can carry out quick effectual heat dissipation cooling to motor inside, improved the radiating efficiency to the motor.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic sectional view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a front view structure diagram of the spiral infusion tube.

In the figure: 1. an outer housing; 2. a heat conducting rod; 3. an inner housing; 4. an output shaft; 5. fixing a column; 6. an intake fan blade; 7. a dustproof filter screen; 8. an air outlet; 9. a spiral infusion tube; 10. heat dissipation ribs; 11. a fixed seat; 12. a liquid storage cavity; 13. a liquid suction chamber; 14. a liquid suction hole; 15. a piston plate; 16. a cross bar; 17. pushing the plate; 18. a spring; 19. a driving bevel gear; 20. positioning seats; 21. a driven bevel gear; 22. a drive shaft; 23. a cam.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the present invention provides a technical solution: a permanent magnet brushless direct current motor with good heat dissipation effect comprises an outer shell 1, an inner shell 3 is arranged in the outer shell 1, an output shaft 4 is rotatably arranged in the inner shell 3, a stator core, a stator winding, a rotor core, a stator winding, a permanent magnet and other parts are also arranged in the inner shell 3, two ends of the output shaft 4 extend out of the inner shell 3, one end of the output shaft 4 extends out of the outer shell 1, one end of the output shaft 4, which is positioned in the outer shell 1, is fixedly provided with an air suction fan blade 6, an air inlet hole is arranged on the inner wall of one side of the outer shell 1, which is close to the air suction fan blade 6, a dustproof filter screen 7 is fixedly arranged in the air inlet hole, the air in the outside can be sucked into the outer shell 1 from the air inlet hole by driving the air suction fan blade 6 to rotate by utilizing the output shaft 4, dust and impurities in the air can be intercepted and filtered by arranging the dustproof filter screen 7, and the dust and impurities are prevented from entering the outer shell 1, an air outlet 8 is formed in the inner wall of one side of the outer shell 1, which is far away from the dustproof filter screen 7, a spiral infusion tube 9 is fixedly installed on the outer wall of the inner shell 3, three heat dissipation ribs 10 are fixedly installed on the outer wall of the outer shell 1, the three heat dissipation ribs 10 are arranged in an equidistant annular shape, and by arranging the three heat dissipation ribs 10, heat generated in the outer shell 1 can be transferred to the outside air through the outer shell 1 and the three heat dissipation ribs 10, so that the heat transfer and heat dissipation effects are good, a fixing seat 11 is fixedly installed on the inner wall of the bottom of the outer shell 1, a liquid storage cavity 12 and a liquid suction cavity 13 are formed in the fixing seat 11, cooling liquid is injected into the liquid storage cavity 12, one side of the liquid suction cavity 13 is provided with an opening, two ends of the spiral infusion tube 9 are fixedly connected with the top of the fixing seat 11, one end of the spiral infusion tube 9 extends into the liquid storage cavity 12, and the other end of the spiral infusion tube 9 is communicated with the inside of the liquid suction cavity 13, the same imbibition hole 14 has been seted up on the one side inner wall that stock solution chamber 12 and imbibition chamber 13 are close to each other, be provided with piston plate 15 in the imbibition chamber 13, piston plate 15 and the inner wall sliding seal contact in imbibition chamber 13, one side fixed mounting of piston plate 15 has horizontal pole 16, the one end of horizontal pole 16 extends to imbibition chamber 13 outer and fixed mounting has push pedal 17, one side fixed mounting of push pedal 17 establishes spring 18 on horizontal pole 16, one end that push pedal 17 and fixing base 11's one side fixed connection are kept away from to spring 18, be provided with the drive assembly in the shell body 1, through setting up the drive assembly, make 4 rotatory in-process of output shaft can control piston plate 15 and carry out horizontal reciprocating motion in imbibition chamber 13, thereby can carry the coolant liquid in the stock solution chamber 12 to flow in the spiral transfer line 9.

In this embodiment, the transmission assembly includes a driving bevel gear 19, a positioning seat 20, a driven bevel gear 21, a transmission shaft 22 and a cam 23, the driving bevel gear 19 is fixedly sleeved on the output shaft 4, the positioning seat 20 is fixedly installed on one side of the inner shell 3 close to the suction fan blade 6, the transmission shaft 22 is rotatably installed on the positioning seat 20, the driven bevel gear 21 is fixedly installed at the top end of the transmission shaft 22, the cam 23 is fixedly installed at the bottom end of the transmission shaft 22, the cam 23 is in contact with one side of the push plate 17 far away from the cross bar 16, the output shaft 4 and the transmission shaft 22 can be controlled to synchronously rotate by utilizing the meshing transmission of the driving bevel gear 19 and the driven bevel gear 21, and the piston plate 15 can be controlled to horizontally reciprocate in the suction cavity 13 by utilizing the rotation of the cam 23 and the elastic action generated by the spring 18.

In this embodiment, equidistant fixed mounting has a plurality of heat conduction poles 2 on the bottom inner wall of stock solution chamber 12, outside a plurality of heat conduction poles 2's bottom all extended to shell body 1, and a plurality of heat conduction poles 2's bottom all with a heat dissipation muscle 10 fixed connection in the three heat dissipation muscle 10, through setting up a plurality of heat conduction poles 2, can be to heat transfer in the coolant liquid to heat dissipation muscle 10 on, thereby can carry out the heat transfer outside shell body 1 to the heat, play and carry out the radiating effect of heat transfer to the coolant liquid.

In this embodiment, the top and the equal fixed mounting in bottom of interior casing 3 have two fixed columns 5, and four fixed columns 5 keep away from the one end of interior casing 3 all with shell body 1's inner wall fixed connection, through setting up four fixed columns 5, play the mounted position of interior casing 3 and support and fixed effect for interior casing 3 can stabilize the installation and fix in shell body 1.

In this embodiment, a first check valve is fixedly installed in the liquid suction hole 14, a second check valve is fixedly installed in the spiral infusion tube 9, the first check valve is arranged to enable the cooling liquid to flow in one direction only in the liquid suction hole 14, and the second check valve is arranged to enable the cooling liquid to flow in one direction only in the spiral infusion tube 9.

In this embodiment, the quantity of venthole 8 is a plurality of, and a plurality of ventholes 8 use output shaft 4 to be equidistant annular and arrange as the center, through setting up a plurality of ventholes 8 for 1 inside hot-air of shell body can be followed a plurality of ventholes 8 and discharged, and the cooperation is inhaled fan blade 6's rotation and is inhaled the outside air in the shell body 1, thereby has realized carrying out effectual forced air cooling radiating effect in the shell body 1.

When the permanent magnet brushless direct current motor is used, the outer shell 1, the inner shell 3, the output shaft 4 and parts installed in the inner shell 3 are combined to form the permanent magnet brushless direct current motor, when the permanent magnet brushless direct current motor is electrified to work, the output shaft 4 rotates, the output shaft 4 drives the suction fan blades 6 and the driving bevel gear 19 to rotate, external air is sucked into the outer shell 1 from the air inlet hole by utilizing the rotation of the suction fan blades 6, dust impurities in the air can be intercepted and filtered by utilizing the dustproof filter screen 7, the dust impurities are prevented from entering the outer shell 1, hot air generated inside the outer shell 1 is discharged through the plurality of air outlet holes 8, so that the air circulation inside the outer shell 1 can be accelerated, the effective air cooling and heat dissipation effects on the motor can be realized, and the output shaft 4 and the transmission shaft 22 can be controlled to synchronously rotate by utilizing the meshing transmission of the driving bevel gear 19 and the driven bevel gear 21, the transmission shaft 22 drives the cam 23 to rotate, the piston plate 15 can be controlled to horizontally reciprocate in the liquid suction cavity 13 by utilizing the rotation of the cam 23 and matching with the elastic force generated by the spring 18, in the process of reciprocating motion of the piston plate 15, the cooling liquid in the liquid storage cavity 12 is sucked into the liquid suction cavity 13 through the liquid suction hole 14, the cooling liquid entering the liquid suction cavity 13 flows back into the liquid storage cavity 12 through the spiral liquid conveying pipe 9, in the process of circulating flow of the cooling liquid in the spiral liquid conveying pipe 9, a part of heat in the outer shell 1 and a part of heat generated on the inner shell 3 are transferred into the cooling liquid, the cooling liquid absorbing heat flows back into the liquid storage cavity 12, the heat in the cooling liquid can be transferred to the heat dissipation ribs 10 by utilizing the plurality of heat conduction rods 2, the heat is transferred to the external air through the heat dissipation ribs 10, and the heat in the cooling liquid can be transferred out of the outer shell 1, have the radiating effect of carrying out the heat transfer to the coolant liquid, thereby can realize carrying out the effect of effectual water-cooling heat dissipation cooling to the motor, through utilizing three heat dissipation muscle 10, make some heat in the shell body 1 transmit to the outside air in through shell body 1 and heat dissipation muscle 10, can realize carrying out the radiating effect of heat transfer to the motor, thereby through carrying out the forced air cooling heat dissipation to the motor inside simultaneously, water-cooling heat dissipation and heat transfer heat dissipation, can carry out quick effectual heat dissipation cooling to the motor inside, the radiating efficiency to the motor has been improved, avoid the inside spare part of motor to receive high temperature and damage, guarantee the stable work of motor, the life of motor has been prolonged, simultaneously the content that does not make detailed description in this specification all belongs to the prior art that technical personnel in the field know.

To sum up, the permanent magnet brushless direct current motor with the good heat dissipation effect can perform air cooling heat dissipation, water cooling heat dissipation and heat transfer heat dissipation on the interior of the motor at the same time, is good in heat dissipation and cooling effect on the motor, is high in heat dissipation efficiency, avoids parts in the interior of the motor from being damaged due to high temperature, guarantees stable work of the motor, and prolongs the service life of the motor.

Claims

1. The utility model provides a brushless DC motor of permanent magnetism that radiating effect is good, includes shell body (1), its characterized in that: the improved air conditioner is characterized in that an inner shell (3) is arranged in the outer shell (1), an output shaft (4) is installed in the inner shell (3) in a rotating mode, two ends of the output shaft (4) extend out of the inner shell (3), one end of the output shaft (4) extends out of the outer shell (1), one end, located in the outer shell (1), of the output shaft (4) is fixedly provided with an air suction fan blade (6), an air inlet hole is formed in the inner wall, close to the air suction fan blade (6), of one side of the outer shell (1), a dustproof filter screen (7) is fixedly installed in the air inlet hole, an air outlet hole (8) is formed in the inner wall, far away from the dustproof filter screen (7), of one side of the outer shell (1), a spiral infusion tube (9) is fixedly installed on the outer wall of the inner shell (3), and three heat dissipation ribs (10) are fixedly installed on the outer wall of the outer shell (1), the three heat dissipation ribs (10) are arranged in an equidistant annular manner, a fixing seat (11) is fixedly installed on the inner wall of the bottom of the outer shell (1), a liquid storage cavity (12) and a liquid suction cavity (13) are formed in the fixing seat (11), one side of the liquid suction cavity (13) is provided with an opening, two ends of the spiral liquid conveying pipe (9) are fixedly connected with the top of the fixing seat (11), one end of the spiral liquid conveying pipe (9) extends into the liquid storage cavity (12), the other end of the spiral liquid conveying pipe (9) is communicated with the inside of the liquid suction cavity (13), the same liquid suction hole (14) is formed in the inner wall of one side, close to the liquid storage cavity (12) and the liquid suction cavity (13), a piston plate (15) is arranged in the liquid suction cavity (13), and the piston plate (15) is in sliding sealing contact with the inner wall of the liquid suction cavity (13), one side fixed mounting of piston plate (15) has horizontal pole (16), the one end of horizontal pole (16) extends to outer and fixed mounting of imbibition chamber (13) has push pedal (17), one side fixed mounting of push pedal (17) is established spring (18) on horizontal pole (16), spring (18) keep away from the one end of push pedal (17) with one side fixed connection of fixing base (11), be provided with the transmission assembly in shell body (1).

2. The permanent magnet brushless direct current motor with good heat dissipation effect according to claim 1, characterized in that: the transmission assembly comprises a driving bevel gear (19), a positioning seat (20), a driven bevel gear (21), a transmission shaft (22) and a cam (23), wherein the driving bevel gear (19) is fixedly sleeved on the output shaft (4), the positioning seat (20) is fixedly installed on one side, close to the suction fan blade (6), of the inner shell (3), the transmission shaft (22) is rotatably installed on the positioning seat (20), the driven bevel gear (21) is fixedly installed at the top end of the transmission shaft (22), the cam (23) is fixedly installed at the bottom end of the transmission shaft (22), and the cam (23) is in contact with one side, far away from the transverse rod (16), of the push plate (17).

3. The permanent magnet brushless direct current motor with good heat dissipation effect according to claim 1, characterized in that: equidistant fixed mounting has a plurality of heat conduction pole (2) on the bottom inner wall of stock solution chamber (12), and is a plurality of the bottom of heat conduction pole (2) all extends to outside shell body (1), and is a plurality of the bottom of heat conduction pole (2) all with three heat dissipation muscle (10) fixed connection in heat dissipation muscle (10).

4. The permanent magnet brushless direct current motor with good heat dissipation effect according to claim 1, characterized in that: the top and the bottom of the inner shell (3) are fixedly provided with two fixing columns (5), and the end, far away from the inner shell (3), of each fixing column (5) is fixedly connected with the inner wall of the outer shell (1).

5. The permanent magnet brushless direct current motor with good heat dissipation effect according to claim 1, characterized in that: a first one-way valve is fixedly arranged in the liquid suction hole (14), and a second one-way valve is fixedly arranged in the spiral transfusion tube (9).

6. The permanent magnet brushless direct current motor with good heat dissipation effect according to claim 1, characterized in that: the number of the air outlet holes (8) is multiple, and the air outlet holes (8) are annularly arranged at equal intervals by taking the output shaft (4) as the center.