CN213461359U

CN213461359U - Outer rotor structure of large fan of outer rotor permanent magnet motor

Info

Publication number: CN213461359U
Application number: CN202022756357.6U
Authority: CN
Inventors: 刘峰; 刘延军
Original assignee: Amberma Suzhou Environmental Technology Co ltd
Current assignee: Amberma Suzhou Environmental Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-15
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses an outer rotor structure of a large fan of an outer rotor permanent magnet motor, which comprises an outer shell, wherein a fixed column is fixedly arranged on the left surface of the outer shell, a radiating fin is fixedly arranged on the upper surface of the outer shell, a threaded hole is formed in the front surface of the outer shell, a fixing nut is fixedly arranged in the threaded hole, a fixed block is fixedly arranged outside the right end of the outer shell, a connecting hole is formed in the left surface of the fixed block, a rotating shaft is fixedly arranged at the right end of the outer shell, and a connecting block is fixedly arranged at the right end; the utility model can rotate and contact with the outside air through the arranged radiating fins, so as to cool the motor shell, and the aluminum shell and the end cover are adopted, so that the quality of the motor is effectively reduced; a fixing structure of a bolt and a limiting block is additionally arranged, so that a magnetic block inside the motor is reinforced; and the same mutual exclusion magnetic blocks are arranged, so that the air reaction force borne by the fan can be counteracted.

Description

Outer rotor structure of large fan of outer rotor permanent magnet motor

Technical Field

The utility model relates to the technical field of electric machines, specifically be an outer rotor structure of large-scale fan of outer rotor permanent-magnet machine.

Background

The outer rotor fan is a fan with a stator in the middle of the motor and a rotor outside. The outer rotor fan adopts an advanced structure and a reasonable pneumatic design of directly driving the impeller by the outer rotor motor, and has the characteristics of high efficiency, low noise, light weight, compact structure, convenient installation and maintenance and the like.

However, the outer rotor motor of the existing large fan has a heavy shell and a relatively small torque, and the magnetic blocks in the outer rotor motor are easy to loosen after long-time rotation, so that the motor is damaged; in addition, when the existing large-scale fan outer rotor motor works continuously, more heat is easily generated inside, and certain damage is easily generated to internal parts when the motor works under a high-temperature condition for a long time, so that the service life of the motor is influenced; and the outer rotor structure of the large-scale fan of the outer rotor permanent magnet motor is provided for solving the problem that the service life of the motor is influenced because the friction between an inner rotating shaft and an outer shell is large due to the reaction force of air on the fan when the outer rotor motor of the existing large-scale fan works.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides an outer rotor structure of a large-scale fan of an outer rotor permanent magnet motor, which aims to solve the problems that the outer shell of the outer rotor motor of the prior large-scale fan proposed in the background art has larger weight and smaller torque, and the inner magnetic block is easy to loose under long-time rotation, thereby damaging the motor; in addition, when the existing large-scale fan outer rotor motor works, the inside of the motor is easy to generate larger heat, and certain damage is easily generated to internal parts when the motor works under a high-temperature condition for a long time, so that the service life of the motor is influenced; and the outer rotor motor of the existing large-scale fan is in operation, because the fan receives the reaction force of air, the friction between the inner rotating shaft and the outer shell is large, and the service life of the motor is influenced.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides an outer rotor structure of large-scale fan of outer rotor permanent-magnet machine, includes the shell body, shell body left side fixed surface installs the fixed column, the last fixed surface of shell body installs the fin, the screw hole has been seted up to the front surface of shell body, the inside fixed mounting of screw hole has fixation nut, the right-hand member outside fixed mounting of shell body has the fixed block, the connecting hole has been seted up on the left surface of fixed block, the right-hand member fixed mounting of shell body has the pivot, the right-hand member fixed mounting of pivot has the connecting block.

Further preferably, a first limiting groove is formed in the left end of the inner portion of the outer shell, a through hole is formed in the right end of the inner portion of the outer shell, a second limiting groove is formed in the middle of the through hole, and a second magnetic block is fixedly mounted at the right end of the second limiting groove.

Preferably, a second clamping block is fixedly mounted at the left end of the outer wall of the rotating shaft, a first clamping block is fixedly mounted at the right end of the outer wall of the rotating shaft, a third magnetic block is fixedly mounted at the right end of the first clamping block, the third magnetic block and the second magnetic block are homopolar, the second clamping block is movably mounted inside the first limiting groove, and the first clamping block is movably mounted inside the second limiting groove.

Further preferably, the radiating fins are arranged in a plurality of groups, and the plurality of groups of radiating fins are uniformly distributed on the outer surface of the outer shell.

Further preferably, a first magnetic block is fixedly mounted in the middle of the inside of the outer shell, a limiting block is fixedly mounted at the right end of the first magnetic block, a fixing bolt is fixedly mounted in the middle of the first magnetic block, and a first sealing gasket is fixedly mounted at the rear end of the fixing bolt.

Further preferably, a second sealing gasket is fixedly mounted at the top of the fixing nut, and the first magnetic block of the outer shell is fixedly connected with the first magnetic block of the outer shell through the mutual matching of the fixing nut and the fixing bolt.

Preferably, the connecting holes are provided with four groups, the outer shell is connected with an external movable connector through four groups of connecting holes, and the rotating shaft is fixed with the external connector through a connecting block.

(III) advantageous effects

The utility model provides an outer rotor structure of large-scale fan of outer rotor permanent-magnet machine possesses following beneficial effect:

(1) this kind of outer rotor structure of large-scale fan of outer rotor permanent-magnet machine, through the fin that sets up, can contact the outside air in the pivoted, and then for motor housing cooling, increase the life of inside rotor and each spare part, avoid current large-scale fan outer rotor machine when continuous operation, inside produces more heat, work produces certain damage to inside spare part easily under the long-time high temperature condition, and then influences the life's of motor problem.

(2) This kind of outer rotor structure of large-scale fan of outer rotor permanent-magnet machine, the motor end cover that constitutes through the aluminium system shell and the aluminium material that set up compares traditional cast iron and has effectively reduced permanent-magnet machine's overall quality, can provide great moment of torsion to be provided with the fixed knot who bolts and stopper and construct, consolidated the inside magnetic path of motor, guarantee that the inside magnetic path of inside motor can not become flexible under the long-time operating condition and drop.

(3) This kind of outer rotor structure of large-scale fan of outer rotor permanent-magnet machine through the same mutual exclusion magnetic path that sets up, can offset the air reaction force that the fan received, and the reaction force that has avoided the fan to receive the air conveys the pivot, and then leads to the frictional force increase between inside pivot and the shell body, also can produce more heat when causing wearing and tearing, influences the life's of motor problem.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of the outer casing of the present invention;

fig. 3 is a schematic structural view of the rotating shaft of the present invention;

fig. 4 is a schematic structural diagram of the first magnetic block of the present invention;

fig. 5 is a schematic structural diagram of the fixing nut and the fixing bolt of the present invention.

In the figure: 1. an outer housing; 2. fixing a column; 3. a heat sink; 4. connecting holes; 5. a rotating shaft; 6. connecting blocks; 7. a fixed block; 8. fixing a nut; 9. a threaded hole; 10. a first limit groove; 11. a first magnetic block; 12. a limiting block; 13. a second limit groove; 14. a second magnetic block; 15. a through hole; 16. a third magnetic block; 17. a first clamping block; 18. a second fixture block; 19. fixing the bolt; 20. a first gasket; 21. a second gasket.

Detailed Description

The technical solution 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 some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, the present invention provides an outer rotor structure of a large fan of an outer rotor permanent magnet motor, which comprises: including

shell body

1, 1 left fixed surface of shell body installs fixed column 2, the last fixed surface of shell body 1 installs fin 3, be convenient for reduce the inside heat of motor, avoid the motor to work under long-time high temperature condition, screw hole 9 has been seted up to the front surface of shell body 1, the inside fixed mounting of screw hole 9 has fixation nut 8, be convenient for further fix inside first magnetic path 11, the right-hand member outside fixed mounting of shell body 1 has fixed block 7, connecting hole 4 has been seted up to the left surface of fixed block 7, the right-hand member fixed mounting of shell body 1 has pivot 5, the right-hand member fixed mounting of pivot 5 has connecting block 6, be convenient for be connected with the external connection.

In this embodiment, specifically, first spacing groove 10 has been seted up to the inside left end of shell body 1, through-hole 15 has been seted up to the inside right-hand member of shell body 1, second spacing groove 13 has been seted up at the middle part of through-hole 15, and the right-hand member fixed mounting of second spacing groove 13 has second magnetic block 14, and through-hole 15 is convenient for the rotation of pivot 5 to second magnetic block 14 can provide reverse repulsion, reduces the heat that the inside friction of motor produced.

Specifically, the left end of the outer wall of the rotating shaft 5 is fixedly provided with a second clamping block 18, the right end of the outer wall of the rotating shaft 5 is fixedly provided with a first clamping block 17, the right end of the first clamping block 17 is fixedly provided with a third magnetic block 16, the third magnetic block 16 and the second magnetic block 14 are homopolar, the second clamping block 18 is movably arranged inside the first limiting groove 10, the first clamping block 17 is movably arranged inside the second limiting groove 13, the third magnetic block 16 and the second magnetic block 14 are homopolar, so that a relative repulsive force is generated, an air reaction force received when the fan rotates is counteracted, friction between the second clamping block 18 and the first clamping block 17 and the outer shell 1 is reduced, and abrasion inside the motor is reduced.

Specifically, fin 3 is provided with a plurality of groups altogether, and the even distribution of a plurality of groups fin 3 is on the surface of shells 1, and a plurality of groups fin 3 can contact with the air of more areas under the rotation state, and then for the cooling of motor shell body 1, avoid the motor to work under long-time high temperature state, influence motor life.

Specifically, fixed mounting has first magnetic path 11 in the middle of the inside of shell body 1, and the right-hand member fixed mounting of first magnetic path 11 has stopper 12, and the middle part fixed mounting of first magnetic path 11 has fixing bolt 19, and fixing bolt 19's rear end fixed mounting has first sealed pad 20, and stopper 12 fixes first magnetic path 11 on the inner wall of shell body 1, and fixation nut 8 further fixes first magnetic path 11 with fixing bolt 19, guarantees the stability of first magnetic path 11 under long-time rotation attitude.

Specifically, the top fixed mounting of fixation nut 8 has the sealed pad 21 of second, and the first magnetic path 11 of shell body 1 and between mutually supports fixed connection through fixation nut 8 and fixing bolt 19, two sets of sealed pad structures can increase the frictional force between fixation nut 8 and the fixing bolt 19 when the inside dust that can not get into of protection motor for the fixed of first magnetic path 11 is more stable.

Specifically, four groups of connecting holes 4 are arranged, the outer shell 1 is connected with an external movable connector through the four groups of connecting holes 4, the rotating shaft 5 is fixed with the external connector through a connecting block 6, the fan is fixedly installed on a fixing block 7 through the four groups of connecting holes 4, and the motor and the fan are fixed at the installation position through the connecting block 6.

The working principle is as follows: after the utility model is installed, firstly checking the installation fixation and safety protection of the utility model, then switching on the external power supply, the large fan external rotor motor starts to rotate, the aluminum outer shell 1 and the motor end cover made of aluminum material effectively reduce the whole quality of the permanent magnet motor, and can provide larger torque, the internal stopper 12, the fixing bolt 19 and the fixing nut 8 fix the first magnetic block 11, so as to ensure the stability of the first magnetic block 11 under the long-time rotation state, the air reaction force received when the fan rotates is transmitted to the rotating shaft 5, and is offset by the repulsion force generated by the second magnetic block 14 and the third magnetic block 16, thereby reducing the friction between the first fixture block 17 and the second fixture block 18 and the outer shell 1, when the outer shell 1 rotates along with the fan, the radiating fins 3 on the outer shell 1 contact with the air with larger area, thereby reducing the temperature inside the outer shell 1 and the motor, make the motor work for a long time, just so accomplished right the utility model discloses a use, the utility model discloses simple structure, convenience safe in utilization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an outer rotor structure of large-scale fan of outer rotor permanent-magnet machine, includes shell body (1), its characterized in that: fixed column (2) are installed to shell body (1) left side fixed surface, the last fixed surface of shell body (1) installs fin (3), screw hole (9) have been seted up to the front surface of shell body (1), the inside fixed mounting of screw hole (9) has fixation nut (8), the right-hand member outside fixed mounting of shell body (1) has fixed block (7), connecting hole (4) have been seted up to the left surface of fixed block (7), the right-hand member fixed mounting of shell body (1) has pivot (5), the right-hand member fixed mounting of pivot (5) has connecting block (6).

2. The outer rotor structure of the large fan with the outer rotor permanent magnet motor according to claim 1, wherein: first spacing groove (10) have been seted up to the inside left end of shell body (1), through-hole (15) have been seted up to the inside right-hand member of shell body (1), second spacing groove (13) have been seted up at the middle part of through-hole (15), the right-hand member fixed mounting of second spacing groove (13) has second magnetic path (14).

3. The outer rotor structure of the large fan with the outer rotor permanent magnet motor according to claim 1, wherein: the outer wall left end fixed mounting of pivot (5) has second fixture block (18), the outer wall right-hand member fixed mounting of pivot (5) has first fixture block (17), the right-hand member fixed mounting of first fixture block (17) has third magnetic block (16), third magnetic block (16) and second magnetic block (14) are homopolar each other, second fixture block (18) movable mounting is in the inside of first spacing groove (10), first fixture block (17) movable mounting is in the inside of second spacing groove (13).

4. The outer rotor structure of the large fan with the outer rotor permanent magnet motor according to claim 1, wherein: the radiating fins (3) are arranged in a plurality of groups, and the radiating fins (3) in the plurality of groups are uniformly distributed on the outer surface of the outer shell (1).

5. The outer rotor structure of the large fan with the outer rotor permanent magnet motor according to claim 1, wherein: fixed mounting has first magnetic path (11) in the middle of the inside of shell body (1), the right-hand member fixed mounting of first magnetic path (11) has stopper (12), the middle part fixed mounting of first magnetic path (11) has fixing bolt (19), the rear end fixed mounting of fixing bolt (19) has first sealed pad (20).

6. The outer rotor structure of the large fan with the outer rotor permanent magnet motor according to claim 1, wherein: the top fixed mounting of fixation nut (8) has the sealed pad of second (21), the first magnetic path (11) of shell body (1) with between through the mutually supporting fixed connection of fixation nut (8) and fixing bolt (19).

7. The outer rotor structure of the large fan with the outer rotor permanent magnet motor according to claim 1, wherein: the connecting holes (4) are provided with four groups, the outer shell (1) is connected with an external movable connector through the four groups of connecting holes (4), and the rotating shaft (5) is fixed with the external connector through a connecting block (6).