Permanent magnet synchronous motor with good cooling performance

Abstract

The utility model discloses a permanent magnet synchronous motor with good cooling performance. The permanent magnet synchronous motor comprises a motor main body and a heat dissipation box, a heat conducting piece is fixedly arranged on the outer curved surface of the middle of the motor body, cooling pipes are fixedly installed on the two side walls of the heat conducting piece in an attached mode, circulating pipes fixedly communicate with the top ends of the two sides of the cooling pipes, a first water inlet and a first water outlet are formed in the top ends of the circulating pipes correspondingly, and a water adding pipe fixedly communicates with the side edge of the upper end of the heat dissipation box. A refrigerator is fixedly installed at the rear end of the heat dissipation box, a second water outlet is fixedly communicated with the front side end of the heat dissipation box, a pump body is fixedly communicated with the outer end of the second water outlet, a second water inlet is fixedly communicated with the side end, away from the water adding pipe, of the heat dissipation box, and a gear motor is fixedly installed on the side wall of the middle of the heat dissipation box. According to the utility model, the cooling liquid can be stirred and mixed to accelerate the refrigeration and cooling of the cooling liquid while the circulating cooling of the motor main body is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet motors, in particular to a permanent magnet synchronous motor with good temperature reduction performance. Background Art

[0002] A permanent magnet synchronous motor is a motor that works on the principle of electromagnetic induction. The permanent magnet synchronous motor consists of a stator, a rotor, and an end cap. It uses permanent magnets to provide excitation, making the motor structure simpler, eliminating the collector rings and brushes that are prone to problems, and improving the reliability of the motor's operation. Because there is no need for excitation current and no excitation loss, the efficiency and power density of the motor are improved. It has the advantages of small size, simple structure, and high power density, and is widely used in position tracking control systems.

[0003] However, in actual use of the existing technology, as energy and environmental issues become increasingly prominent, permanent magnet synchronous motors have been widely used in the fields of industry, transportation, energy, etc. due to their advantages of high efficiency, energy saving, and environmental protection. However, during the efficient operation of the permanent magnet synchronous motor, a large amount of electrical energy is converted into thermal energy, which increases the internal temperature of the motor, affecting the performance and service life of the motor. The existing structure of the permanent magnet synchronous motor uses an external heat conducting sheet to conduct the heat inside the motor to the outside for heat dissipation. However, when the heat inside the motor is conducted to the outside for heat dissipation through the external heat conducting sheet, the heat dissipation efficiency is low, resulting in a mediocre cooling effect of the motor. Utility Model Content

[0004] The purpose of the utility model is to provide a permanent magnet synchronous motor with good cooling performance, so as to solve the problem that the permanent magnet synchronous motors with existing structures proposed in the above background technology all dissipate heat by conducting the heat inside the motor to the outside through external heat conductive plates, but when the heat inside the motor is dissipated to the outside through the external heat conductive plates, the heat dissipation efficiency is low, resulting in a mediocre cooling effect of the motor.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: comprising a motor body and a heat sink;

[0006] A heat conducting sheet is fixedly provided on the outer curved surface in the middle of the motor body, cooling pipes are fixedly installed on the two side walls of the heat conducting sheet, circulating pipes are fixedly connected to the top ends of the two sides of the cooling pipes, and a first water inlet and a first water outlet are respectively provided on the top ends of the circulating pipes, a water supply pipe is fixedly provided on the side of the upper end of the heat dissipation box, a refrigerator is fixedly installed on the rear end of the heat dissipation box, a second water outlet is fixedly provided on the front side of the heat dissipation box, a pump body is fixedly connected to the outer end of the second water outlet, and a second water inlet is fixedly provided on the side of the heat dissipation box away from the water supply pipe;

[0007] A reduction motor is fixedly installed on the middle side wall of the heat dissipation box, a first gear is fixedly installed on the inner transmission shaft part of the reduction motor, a second gear is meshingly connected to the side end of the first gear, a stirring shaft is fixedly installed in the middle of the second gear, and a stirring paddle for stirring the coolant inside the heat dissipation box is fixedly installed on the outer curved surface of the stirring shaft.

[0008] Preferably, the motor body support is fixedly installed on the upper end of the heat sink, so that the motor body is fixedly supported by the heat sink, and mounting holes are opened through the four corners of the lower bottom of the heat sink, and there are four mounting holes, which are symmetrically distributed at the four corners of the lower bottom of the heat sink, so that the heat sink can be fixedly installed through the mounting holes and fixing bolts.

[0009] Preferably, there are several heat conducting plates, which are symmetrically distributed on the outer curved surface in the middle of the motor body, and the circulation pipes are symmetrically distributed on the top ends of both sides of the cooling pipes.

[0010] Preferably, an observation groove is fixedly provided on the rear end side wall of the heat sink, and a transparent plate is bonded to the side opening of the observation groove, so that the liquid level of the coolant inside the heat sink can be observed through the observation groove, and a thermometer is fixedly installed through the upper end of the observation groove, so that the temperature of the coolant inside the heat sink can be monitored and displayed by the thermometer.

[0011] Preferably, the refrigeration copper tube portion at the front end of the refrigerator penetrates to the bottom of the heat sink, so that the coolant inside the heat sink is cooled and cooled by the refrigerator.

[0012] Preferably, the outlet at the outer end of the pump body is connected to the first water inlet through a hose, so that the coolant inside the radiator is pumped into the circulation pipe through the hose and the first water inlet through the second water outlet and the pump body, and the second water inlet is connected to the first water outlet through the hose.

[0013] Preferably, both side ends of the stirring shaft are rotatably connected to the inner wall of the rear end of the heat dissipation box through a rotating shaft.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model uses the second water outlet and the pump body to draw the coolant inside the heat sink into the circulation pipe through the hose and the first water inlet. When the coolant is drawn into the circulation pipe, the coolant absorbs heat and cools the heat conducting plate and the motor body through the cooling pipe. The heat sink is fixedly connected with a second water inlet at one end away from the water supply pipe, and the second water inlet is connected with the first water outlet through the hose, so that after the coolant cools the heat conducting plate and the motor body through the cooling pipe, it will enter the heat sink through the first water outlet, the hose and the second water inlet in turn, and cool the coolant after heat dissipation through the refrigerator, thereby realizing the effect of circulating and cooling the motor body;

[0016] 2. When the reduction motor is controlled to be turned on, the reduction motor will drive the first gear to rotate. When the first gear rotates, it will mesh and drive the second gear to rotate. When the second gear rotates, it will drive the stirring shaft to rotate. When the stirring shaft rotates, it can drive the stirring paddle to stir and mix the coolant inside the heat sink, thereby achieving the effect of circulating and cooling the motor body while stirring and mixing the coolant to accelerate the cooling of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of a permanent magnet synchronous motor with good cooling performance is shown in the following figure. Figure 1 ;

[0018] Figure 2 The overall structure of a permanent magnet synchronous motor with good cooling performance is shown in the following figure. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the overall cross-sectional structure of a permanent magnet synchronous motor with good temperature reduction performance according to the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the local structure of a permanent magnet synchronous motor with good temperature reduction performance.

[0021] In the figure: 1. Motor body; 2. Heat sink; 3. Mounting hole; 4. Heat conducting plate; 5. Cooling pipe; 6. Circulation pipe; 7. First water inlet; 8. First water outlet; 9. Water supply pipe; 10. Observation tank; 11. Thermometer; 12. Refrigerator; 13. Second water outlet; 14. Pump body; 15. Second water inlet; 16. Speed ​​reducer motor; 17. First gear; 18. Second gear; 19. Stirring shaft; 20. Stirring paddle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: including a motor body 1 and a heat sink 2, the motor body 1 is supported and fixedly installed on the upper end of the heat sink 2, so that the motor body 1 is fixedly supported by the heat sink 2, and the four corners of the lower bottom of the heat sink 2 are penetrated with mounting holes 3, and the number of mounting holes 3 is four, which are symmetrically distributed at the four corners of the lower bottom of the heat sink 2, so that the heat sink 2 is fixedly installed through the mounting holes 3 and the fixing bolts;

[0024] A heat conducting sheet 4 is fixedly provided on the outer curved surface in the middle of the motor body 1, and there are several heat conducting sheets 4, which are symmetrically distributed with respect to the outer curved surface in the middle of the motor body 1. Cooling pipes 5 are fixedly installed on the two side walls of the heat conducting sheet 4. Circulation pipes 6 are fixedly connected to the top ends of the two sides of the cooling pipes 5, and the circulation pipes 6 are symmetrically distributed with the top ends of the two sides of the cooling pipes 5. The top ends of the circulation pipes 6 are respectively provided with a first water inlet 7 and a first water outlet 8. A water adding pipe 9 is fixedly connected to the side of the upper end of the heat sink 2, so that cold zone liquid is added to the heat sink 2 through the water adding pipe 9. An observation groove 10 is fixedly provided on the side wall at the rear end of the heat sink 2, and a transparent plate is bonded to the side opening of the observation groove 10, so that the liquid level of the coolant in the heat sink 2 can be observed through the observation groove 10. A thermometer 11 is fixedly installed on the upper end of the observation groove 10, so that the temperature of the coolant in the heat sink 2 can be monitored and displayed through the thermometer 11. A refrigerator 12 is fixedly installed on the rear end of the heat sink 2, and the cooling copper pipe part at the front end of the refrigerator 12 penetrates to the bottom of the heat sink 2, so that the cooling liquid can be measured through the observation groove 10. The refrigerator 12 cools and cools the coolant inside the heat sink 2. The front side end of the heat sink 2 is fixedly connected with a second water outlet 13. The outer end of the second water outlet 13 is fixedly connected with a pump body 14, and the outer end outlet of the pump body 14 is connected with the first water inlet 7 through a hose, so that the coolant inside the heat sink 2 is pumped into the circulation pipe 6 through the second water outlet 13 and the pump body 14 through the hose and the first water inlet 7. When the coolant is pumped into the circulation pipe 6, the coolant will pass through the cooling pipe 5 to the heat conducting sheet 4. The heat absorbing and cooling of the motor body 1 is performed, and the heat dissipation box 2 is fixedly connected with a second water inlet 15 at one end away from the water supply pipe 9, and the second water inlet 15 is connected with the first water outlet 8 through a hose, so that after the coolant cools the heat conducting sheet 4 and the motor body 1 through the cooling pipe 5, it will enter the heat dissipation box 2 through the first water outlet 8, the hose and the second water inlet 15 in sequence, and the coolant after the heat dissipation is cooled and cooled by the refrigerator 12, thereby realizing the effect of circulating and cooling the motor body 1;

[0025] A reduction motor 16 is fixedly installed on the side wall of the middle part of the heat sink 2, and a first gear 17 is fixedly installed on the transmission shaft part inside the reduction motor 16. The side end of the first gear 17 is meshed and connected with the second gear 18. A stirring shaft 19 is fixedly installed in the middle of the second gear 18, and the two side ends of the stirring shaft 19 are rotatably connected to the inner wall of the rear end of the heat sink 2 through a rotating shaft. A stirring paddle 20 for stirring the coolant inside the heat sink 2 is fixedly installed on the outer curved surface of the stirring shaft 19, so that when the reduction motor 16 is controlled to be turned on, the reduction motor 16 will drive the first gear 17 to rotate. When the first gear 17 rotates, it will mesh and drive the second gear 18 to rotate. When the second gear 18 rotates, it will drive the stirring shaft 19 to rotate. When the stirring shaft 19 rotates, it can drive the stirring paddle 20 to stir and mix the coolant inside the heat sink 2, thereby realizing the circulation and cooling of the motor body 1 while stirring and mixing the coolant to accelerate the cooling and cooling of the coolant.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet synchronous motor with good cooling performance, characterized in that: It comprises a motor body (1) and a heat sink (2); A heat conducting sheet (4) is fixedly provided on the outer curved surface in the middle of the motor body (1), cooling pipes (5) are fixedly installed on the two side walls of the heat conducting sheet (4), the top ends of the two sides of the cooling pipe (5) are fixedly connected with circulation pipes (6), the top ends of the circulation pipes (6) are respectively provided with a first water inlet (7) and a first water outlet (8), the upper side edge of the heat dissipation box (2) is fixedly connected with a water supply pipe (9), the rear end of the heat dissipation box (2) is fixedly installed with a refrigerator (12), the front end of the heat dissipation box (2) is fixedly connected with a second water outlet (13), the outer end of the second water outlet (13) is fixedly connected with a pump body (14), and the side end of the heat dissipation box (2) away from the water supply pipe (9) is fixedly connected with a second water inlet (15); A reduction motor (16) is fixedly mounted on the middle side wall of the heat dissipation box (2); a first gear (17) is fixedly mounted on the inner transmission shaft portion of the reduction motor (16); a second gear (18) is meshingly connected to the side end of the first gear (17); a stirring shaft (19) is fixedly mounted on the middle of the second gear (18); a stirring paddle (20) for stirring the coolant inside the heat dissipation box (2) is fixedly mounted on the outer curved surface of the stirring shaft (19).

2. A permanent magnet synchronous motor with good temperature reduction performance according to claim 1, characterized in that: The motor body (1) is supported and fixedly installed on the upper end of the heat sink (2), so that the motor body (1) is fixedly supported by the heat sink (2), and mounting holes (3) are provided through the four corners of the lower bottom of the heat sink (2), and there are four mounting holes (3), which are symmetrically distributed at the four corners of the lower bottom of the heat sink (2), so that the heat sink (2) is fixedly installed through the mounting holes (3) in cooperation with fixing bolts.

3. A permanent magnet synchronous motor with good temperature reduction performance according to claim 2, characterized in that: There are a plurality of heat conducting plates (4), which are symmetrically distributed on the outer curved surface in the middle of the motor body (1); and the circulation pipes (6) are symmetrically distributed on the top ends of both sides of the cooling pipe (5).

4. A permanent magnet synchronous motor with good temperature reduction performance according to claim 3, characterized in that: An observation slot (10) is fixedly connected to the rear end side wall of the heat sink (2), and a transparent plate is bonded to the side opening of the observation slot (10), so that the liquid level of the coolant inside the heat sink (2) can be observed through the observation slot (10), and a thermometer (11) is fixedly installed through the upper end of the observation slot (10), so that the temperature of the coolant inside the heat sink (2) can be monitored and displayed through the thermometer (11).

5. A permanent magnet synchronous motor with good temperature reduction performance according to claim 4, characterized in that: The cooling copper tube portion at the front end of the refrigerator (12) penetrates the bottom of the heat sink (2), so that the cooling liquid inside the heat sink (2) is cooled and cooled by the refrigerator (12).

6. A permanent magnet synchronous motor with good temperature reduction performance according to claim 5, characterized in that: The outlet at the outer end of the pump body (14) is connected to the first water inlet (7) via a hose, so that the coolant inside the heat sink (2) is pumped into the circulation pipe (6) through the second water outlet (13) and the pump body (14) through the hose and the first water inlet (7), and the second water inlet (15) is connected to the first water outlet (8) via a hose.

7. A permanent magnet synchronous motor with good temperature reduction performance according to claim 6, characterized in that: The two side ends of the stirring shaft (19) are rotatably connected to the inner wall of the rear end of the heat dissipation box (2) via a rotating shaft.

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