Permanent magnet motor with novel heat dissipation structure

Abstract

The utility model is suitable for the technical field of permanent magnet motors, and provides a permanent magnet motor with a novel heat dissipation structure, which comprises a permanent magnet motor body, one end of the permanent magnet motor body is provided with a front end cover, the other end of the permanent magnet motor body is provided with a rear end cover, and the bottom of the permanent magnet motor body is fixedly connected with a fixed seat. And heat dissipation fins are arranged on the surface of the permanent magnet motor body. According to the permanent magnet motor with the novel heat dissipation structure, after the fan works, external airflow can be extracted, the airflow is injected into the inner cavity of the U-shaped flow dividing plate and then is divided, and after the airflow is sprayed out through the multiple nozzles, the flowing rate of the airflow on the surfaces of the heat dissipation fins can be increased, and then the heat dissipation effect on the heat dissipation fins is improved; the surface temperature of the heat dissipation fins is low, and the temperature of the inner cavity of the permanent magnet motor body can be reduced through heat exchange, thereby improving the heat dissipation effect of the permanent magnet motor body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to permanent magnet motor technical field especially relates to a permanent magnet motor with novel heat dissipation structure. BACKGROUND

[0002] Permanent magnet motor and brushless DC permanent magnet motor are more and more used in AC speed regulation system composed of variable frequency power supply and AC motor to replace DC motor speed regulation system, and are widely used in the field of aviation, aerospace, numerical control machine tool, machining center, robot etc.

[0003] Permanent magnet motor is a kind of device that permanent magnet generates motor magnetic field, and it does not need excitation coil and excitation current. In the prior art, since permanent magnet motor is usually in long-time working state, most permanent magnet motors only perform natural heat dissipation through heat dissipation fins arranged on the shell, and the heat dissipation effect is poor, the heat dissipation efficiency is low, and the aging rate of permanent magnet motor is fast, which shortens the service life of permanent magnet motor. UTILITY MODEL CONTENTS

[0004] The utility model provides a permanent magnet motor with novel heat dissipation structure, and aims at solving the problem that in the prior art, when permanent magnet motor works for a long time, the permanent magnet motor mostly only performs natural heat dissipation through heat dissipation fins arranged on the shell, and the heat dissipation effect is poor.

[0005] The utility model is realized in this way, a permanent magnet motor with novel heat dissipation structure, including permanent magnet motor body, the one end of permanent magnet motor body is provided with front end cover, the other end of permanent magnet motor body is provided with rear end cover, the bottom of permanent magnet motor body is fixedly connected with fixed seat, the surface of permanent magnet motor body is provided with heat dissipation fin, the upper surface of fixed seat is detachably provided with the U-shaped shunt board that covers in the outside of heat dissipation fin;

[0006] The inner wall surface of U-shaped shunt board is communicated with a plurality of spouts, the top of spout is communicated and is provided with containing box, the inner chamber of containing box is fixedly connected with fan through support, the top of support is communicated with first filter screen, the rear end cover is provided with heat dissipation mechanism, the surface of front end cover is provided with air inlet window.

[0007] Preferably, the heat dissipation mechanism includes a cylinder, a connecting rod fixedly connected to the center shaft of the motor rotor, and a fan blade, the cylinder is communicated with the other end surface of the rear end cover, the other end of the connecting rod extends into the interior of the cylinder, and the fan blade is fixedly connected to the other end of the connecting rod.

[0008] Preferably, the other end of the inner cavity of the cylinder is fixedly connected with a second filter screen.

[0009] Preferably, the bottom of the U-shaped shunt plate is fixedly connected with a connecting plate, and the connecting plate is detachably connected with the upper surface of the fixed seat through bolts.

[0010] Preferably, the side wall of the accommodating box is provided with an inspection cover plate through a plurality of screws.

[0011] Preferably, a plurality of the heat dissipation fins are arranged in a ring shape and uniformly spaced along the surface of the permanent magnet motor body, and a plurality of the nozzles are arranged in a ring shape and uniformly spaced along the inner wall surface of the U-shaped shunt plate.

[0012] Beneficial effects

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] After the fan works, external air flow can be extracted, the air flow is injected into the inner cavity of the U-shaped shunt plate, is shunted, and after being sprayed out through a plurality of nozzles, the flow rate of the air flow on the surface of the heat dissipation fin can be accelerated, thereby improving the heat dissipation effect of the heat dissipation fin, the surface temperature of the heat dissipation fin is low, the temperature in the inner cavity of the permanent magnet motor body can be reduced through heat exchange, thereby improving the heat dissipation effect of the permanent magnet motor body, and when the permanent magnet motor body works, the connecting rod drives the fan blade to rotate, thereby discharging the air flow carrying heat in the inner cavity of the permanent magnet motor body, the external air flow enters the inner cavity of the permanent magnet motor body through the air inlet window, the flow rate of the air flow in the inner cavity of the permanent magnet motor body is improved, thereby reducing the aging rate of the permanent magnet motor body and prolonging the service life of the permanent magnet motor body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a side surface structure schematic view of the utility model;

[0016] Fig. 2 It is a structure schematic view of the U-shaped shunt plate and the accommodating box in the utility model;

[0017] Fig. 3 It is a structure schematic view of the cylinder and the fan blade in the utility model.

[0018] In the drawing: 1, permanent magnet motor body; 2, front end cover; 3, rear end cover; 4, fixed seat; 5, connecting plate; 6, bolt; 7, U-shaped shunt plate; 8, nozzle; 9, accommodating box; 10, support; 11, fan; 12, first filter screen; 13, screw; 14, inspection cover plate; 15, heat dissipation fin; 16, air inlet window; 17, cylinder; 18, connecting rod; 19, second filter screen; 20, fan blade. DETAILED DESCRIPTION

[0019] In order to make the utility model purposes, technical schemes and advantages more clearly, the following will be further described in detail with the drawings and examples.

[0020] Please refer to Figs. 1-3 The utility model provides a technical scheme: a permanent magnet motor with novel heat dissipation structure, including permanent magnet motor body 1, the one end of permanent magnet motor body 1 is provided with front end cover 2, the other end of permanent magnet motor body 1 is provided with rear end cover 3, and the bottom of permanent magnet motor body 1 is fixedly connected with fixed seat 4.

[0021] The surface of permanent magnet motor body 1 is provided with heat dissipation fin 15, and the upper surface of fixed seat 4 is detachably provided with U-shaped flow divider 7 covered outside heat dissipation fin 15.

[0022] The inner wall surface of U-shaped flow divider 7 is communicated with a plurality of nozzles 8, the top of nozzle 8 is communicated with containing box 9, and the inner cavity of containing box 9 is fixedly connected with fan 11 through support 10.

[0023] The top of support 10 is communicated with first filter screen 12, the rear end cover 3 is provided with heat dissipation mechanism, and the surface of front end cover 2 is provided with air inlet window 16.

[0024] After fan 11 works, external airflow can be extracted, the airflow is injected into the inner cavity of U-shaped flow divider 7 and is divided, and after the airflow is sprayed out through a plurality of nozzles 8, the flow rate of the airflow on the surface of heat dissipation fin 15 can be accelerated, and the heat dissipation effect of heat dissipation fin 15 is improved, the surface temperature of heat dissipation fin 15 is low, the temperature in the inner cavity of permanent magnet motor body 1 can be reduced through heat exchange, and the heat dissipation effect of permanent magnet motor body 1 is improved.

[0025] Further, the heat dissipation mechanism includes cylinder 17, connecting rod 18 fixedly connected with the center shaft of the motor rotor and fan blade 20, the other end surface of cylinder 17 is communicated with rear end cover 3, the other end of connecting rod 18 extends to the inside of cylinder 17, and fan blade 20 is fixedly connected to the other end of connecting rod 18.

[0026] In the embodiment, when permanent magnet motor body 1 works, fan blade 20 is driven to rotate through connecting rod 18, and the airflow carrying heat in the inner cavity of permanent magnet motor body 1 is discharged, external airflow enters the inner cavity of permanent magnet motor body 1 through air inlet window 16, the flow rate of the airflow in the inner cavity of permanent magnet motor body 1 is improved, and the aging rate of permanent magnet motor body 1 is reduced, thereby prolonging the service life of permanent magnet motor body 1.

[0027] Further, the other end of the inner cavity of the cylinder 17 is fixedly connected with a second filter screen 19, and the second filter screen 19 avoids air backflow and makes dust enter the inner cavity of the permanent magnet motor body 1.

[0028] Further, the bottom of the U-shaped shunt plate 7 is fixedly connected with a connecting plate 5, and the connecting plate 5 is detachably connected with the upper surface of the fixing seat 4 through a bolt 6.

[0029] In the embodiment, after the bolt 6 is detached, the U-shaped shunt plate 7 can be removed, so that the later maintenance operation is facilitated.

[0030] Further, the side wall of the containing box 9 is detachably provided with a maintenance cover plate 14 through a plurality of screws 13, and after the screws 13 are detached, the maintenance cover plate 14 can be removed, so that the inner cavity of the containing box 9 is maintained and repaired.

[0031] Further, a plurality of heat dissipation fins 15 are uniformly and spacedly arranged along the surface of the permanent magnet motor body 1, and a plurality of nozzles 8 are uniformly and spacedly arranged along the inner wall surface of the U-shaped shunt plate 7.

[0032] The working principle and use process of the utility model are as follows: after the utility model is installed and the fan 11 works, external air flow can be extracted, the air flow is shunted after being injected into the inner cavity of the U-shaped shunt plate 7, and the air flow can be accelerated on the surface of the heat dissipation fin 15 after being sprayed through the plurality of nozzles 8, so that the heat dissipation effect of the heat dissipation fin 15 is improved, the surface temperature of the heat dissipation fin 15 is low, the temperature of the inner cavity of the permanent magnet motor body 1 can be reduced through heat exchange, the heat dissipation effect of the permanent magnet motor body 1 is improved, and when the permanent magnet motor body 1 works, the fan blade 20 is driven to rotate through the connecting rod 18, so that the air flow carrying heat in the inner cavity of the permanent magnet motor body 1 is discharged, the external air flow enters the inner cavity of the permanent magnet motor body 1 through the air inlet window 16, the flow rate of the air flow in the inner cavity of the permanent magnet motor body 1 is improved, and the aging rate of the permanent magnet motor body 1 is reduced.

[0033] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A permanent magnet motor with a novel heat dissipation structure, characterized in that: Includes a permanent magnet motor body (1), one end of which is provided with a front end cover (2), the other end of which is provided with a rear end cover (3), a fixed base (4) is fixedly connected to the bottom of the permanent magnet motor body (1), heat dissipation fins (15) are provided on the surface of the permanent magnet motor body (1), and a U-shaped diverter plate (7) is detachably provided on the upper surface of the fixed base (4) and covered outside the heat dissipation fins (15). The inner wall of the U-shaped diverter plate (7) is connected to several nozzles (8), and the top of the nozzles (8) is connected to a receiving box (9). The inner cavity of the receiving box (9) is fixedly connected to a fan (11) by a bracket (10). The top of the bracket (10) is connected to a first filter screen (12). A heat dissipation mechanism is provided on the rear cover (3), and an air inlet window (16) is provided on the surface of the front cover (2).

2. A permanent magnet motor with a novel heat dissipation structure as described in claim 1, characterized in that: The heat dissipation mechanism includes a cylinder (17), a connecting rod (18) fixedly connected to the central shaft of the motor rotor, and a fan blade (20). The cylinder (17) is connected to the other end face of the rear end cover (3). The other end of the connecting rod (18) extends into the interior of the cylinder (17), and the fan blade (20) is fixedly connected to the other end of the connecting rod (18).

3. A permanent magnet motor with a novel heat dissipation structure as described in claim 2, characterized in that: A second filter screen (19) is fixedly connected to the other end of the inner cavity of the cylinder (17).

4. A permanent magnet motor with a novel heat dissipation structure as described in claim 1, characterized in that: The bottom of the U-shaped diverter plate (7) is fixedly connected to a connecting plate (5), and the connecting plate (5) is detachably connected to the upper surface of the fixed seat (4) by bolts (6).

5. A permanent magnet motor with a novel heat dissipation structure as described in claim 1, characterized in that: The side wall of the container (9) is fitted with an inspection cover (14) by means of several screws (13).

6. A permanent magnet motor with a novel heat dissipation structure as described in claim 1, characterized in that: Multiple heat dissipation fins (15) are evenly spaced and arranged in a ring along the surface of the permanent magnet motor body (1), and multiple nozzles (8) are evenly spaced and arranged along the inner wall of the U-shaped diverter plate (7).

Images