CN119945042A - A semi-direct drive permanent magnet synchronous frequency conversion integrated machine - Google Patents
A semi-direct drive permanent magnet synchronous frequency conversion integrated machine Download PDFInfo
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- CN119945042A CN119945042A CN202510035218.9A CN202510035218A CN119945042A CN 119945042 A CN119945042 A CN 119945042A CN 202510035218 A CN202510035218 A CN 202510035218A CN 119945042 A CN119945042 A CN 119945042A
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Abstract
本发明涉及电机领域，尤其涉及一种半直驱永磁同步变频一体机。所述半直驱永磁同步变频一体机包括电机主体模块、变频器模块和行星减速器模块；所述行星减速器模块安装于所述电机主体模块的前端盖上；在所述电机主体模块上安装有风冷散热单元，所述风冷散热单元中用于进气的开口位于后端盖处，而用于出气的开口位于前端盖处；所述行星减速器模块上还安装有水冷散热单元。本发明提供的半直驱永磁同步变频一体机中，行星减速器模块自身依旧采用水冷系统进行散热，同时，叶轮在转动过程中所产生的气流也能够直接作用在行星减速器模块上，因此还能够对行星减速器模块进行风冷散热，提升对行星减速器模块的散热效果。
The present invention relates to the field of motors, and in particular to a semi-direct-drive permanent magnet synchronous frequency conversion integrated machine. The semi-direct-drive permanent magnet synchronous frequency conversion integrated machine includes a motor main body module, a frequency converter module and a planetary reducer module; the planetary reducer module is installed on the front end cover of the motor main body module; an air-cooling heat dissipation unit is installed on the motor main body module, and the opening for air intake in the air-cooling heat dissipation unit is located at the rear end cover, and the opening for air outlet is located at the front end cover; a water-cooling heat dissipation unit is also installed on the planetary reducer module. In the semi-direct-drive permanent magnet synchronous frequency conversion integrated machine provided by the present invention, the planetary reducer module itself still adopts a water cooling system for heat dissipation. At the same time, the airflow generated by the impeller during rotation can also directly act on the planetary reducer module, so the planetary reducer module can also be air-cooled and heat dissipated, thereby improving the heat dissipation effect of the planetary reducer module.
Description
Technical Field
The invention relates to the field of motors, in particular to a semi-direct-drive permanent magnet synchronous variable frequency all-in-one machine.
Background
The motor is commonly called a motor, and refers to an electromagnetic device for converting or transmitting electric energy according to an electromagnetic induction law. Motors are divided into two main categories, motors and generators.
CN 118694086B discloses a 'speed-reducing permanent magnet synchronous variable frequency integrated machine structure', which is formed by combining a permanent magnet synchronous motor, a gear reduction box and a frequency converter, and has the advantages of high integration, small occupied space, convenient installation and maintenance and high system efficiency, while the gear reduction box is installed at the driving end of the permanent magnet synchronous motor module through modularized design, the power input side of the gear reduction box is in spline fit with the driving end of the permanent magnet synchronous motor module, and in order to further shorten the whole axial space, the gear reduction box module and the permanent magnet synchronous motor module adopt a scheme of 'sharing end covers and bearings', and the output end of the permanent magnet synchronous motor module can be synchronously cooled by utilizing the characteristic of sharing the end covers while the gear reduction box module itself adopts water cooling measures for cooling, so that the reliability of the integrated machine in use is further improved.
However, the following drawbacks and disadvantages exist in the implementation process:
the gear box adopts a common end cover and a pumped design, so that the permanent magnet synchronous motor module can be cooled through the common end cover when the gear box module performs water cooling operation, but the friction force between gears is relatively large in the operation process of the gear box, so that the generated heat is relatively large and is larger than the heat generated by the motor, and if the same end cover and a bearing are shared, the heat generated by the gear box module is conducted into the permanent magnet synchronous motor module, the motor cannot be cooled, the temperature of the motor is easily raised, and the normal operation of the motor is influenced.
Therefore, it is necessary to provide a new semi-direct-drive permanent magnet synchronous frequency conversion integrated machine to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a semi-direct-drive permanent magnet synchronous frequency conversion integrated machine.
The invention provides a semi-direct-drive permanent magnet synchronous frequency conversion all-in-one machine, which comprises a motor main body module, a frequency converter module and a planetary reducer module;
The planetary reducer module is arranged on the front end cover of the motor main body module, an output shaft of the motor main body module is connected with a shaft of the planetary reducer module through a spline, and a certain interval is reserved between the planetary reducer module and the motor main body module;
An air cooling radiating unit is arranged on the motor main body module, an opening for air inlet in the air cooling radiating unit is positioned at the rear end cover, an opening for air outlet is positioned at the front end cover and faces to the position of the planetary speed reducer module, and the guided air also passes through the planetary speed reducer module to realize air cooling of the planetary speed reducer module;
And the planetary reducer module is also provided with a water cooling unit which is matched with the planetary reducer module for cooling.
Preferably, the motor body module includes a housing portion and a core portion mounted inside the housing portion with a space therebetween.
Preferably, the air-cooled heat dissipation unit comprises an air duct, the air duct is composed of a shell part, a core body part and a plurality of partition boards fixed between the shell part and the core body part, the air duct is arranged along the length direction of the shell part, so that air flow enters from the rear end of the motor main body module and is led out from the front end, and a filter end cover covering an air inlet opening is fixed at the tail end of the shell part;
And an impeller is also fixed on the output shaft of the motor main body module, and the impeller corresponds to the front end air outlet opening of the motor main body module.
Preferably, a plurality of fins are also installed inside the air duct.
Preferably, the front end cover of the motor main body module is also fixed with a plurality of annularly distributed positioning rods, the other ends of the positioning rods are fixed with concentric threaded rods, and the diameter of the threaded rods is smaller than that of the positioning rods.
Preferably, the planetary reducer module is composed of a mounting plate and a main body part fixed on the mounting plate, the mounting plate is provided with a plurality of holes, a threaded rod penetrates through the mounting plate through the holes and is fixed through nuts, and a positioning rod abuts against the mounting plate;
the impeller in the air cooling radiating unit is positioned between the front end cover of the motor main body module and the mounting plate.
Preferably, the water cooling unit comprises an inner ring plate, the inner ring plate is concentrically arranged outside the main body part, a baffle ring is integrally connected to the circumferential outer wall of the inner ring plate at the position of the joint edge, a first baffle plate is also fixed, two ends of the first baffle plate are fixed with the baffle ring, a plurality of second baffle plates which are axially distributed and concentrically arranged with the inner ring plate are also fixed to the circumferential outer wall of the inner ring plate, the second baffle plates are unsealed circular rings, only one end of each second baffle plate is fixed with the first baffle plate, and a water channel for water supply flow circulation is formed among the inner ring plate, the baffle ring, the first baffle plate and the second baffle plates;
The outer ring plate is tightly propped against the baffle ring, the first baffle plate and the second baffle plate, and is sealed through a rubber strip, and a liquid inlet nozzle and a liquid outlet nozzle which are communicated with a water channel are arranged on the outer ring plate.
Preferably, a fixing ring is further fixed outside the main body part, a plurality of annularly distributed connecting pieces are fixed outside the circumference of the fixing ring, the other ends of the connecting pieces are fixed with the inner ring plate, and a channel for air supply flow is formed between the fixing ring and the inner ring plate and corresponds to the impeller.
Preferably, the fixing ring, the connecting sheet and the inner ring plate are made of aluminum or copper.
Compared with the related art, the semi-direct-drive permanent magnet synchronous frequency conversion integrated machine provided by the invention has the following beneficial effects:
1. The planetary reducer module is arranged at the front end cover of the motor main body module, and a certain interval exists between the planetary reducer module and the motor main body module, so that heat conduction can be restrained, and heat generated by the planetary reducer module is prevented from being conducted into the motor main body module;
2. Because a certain interval is arranged between the motor main body module and the planetary reducer module, part of the output shaft of the motor is positioned in the interval, and the impeller is arranged on the output shaft of the motor, so that in the running process of the motor, the power transmission can be realized, the planetary reducer is driven to run, the impeller can be driven to rotate at a high speed, the flow rate of air flow in an air passage is further accelerated by the impeller, and the self air cooling operation of the motor is realized;
3. The planetary reducer module still adopts the water cooling system to dispel the heat by itself, and simultaneously, the impeller also can directly be used in the planetary reducer module at the air current that rotates in-process produced, consequently can also carry out the forced air cooling to planetary reducer module and dispel the heat, promotes the radiating effect to planetary reducer module.
Drawings
FIG. 1 is a schematic structural diagram of a half-direct-drive permanent magnet synchronous variable frequency all-in-one machine according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the other side of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of a motor body module according to the present invention;
fig. 4 is a schematic structural diagram of an air-cooled heat dissipation unit according to the present invention;
FIG. 5 is a schematic view of a planetary reduction module according to the present invention;
FIG. 6 is a schematic diagram of a water-cooled heat dissipating unit according to the present invention;
fig. 7 is a schematic structural view of the fixing ring according to the present invention.
In the figure, the reference numerals comprise 1, a motor main body module, 11, a shell part, 12, a core part, 2, a frequency converter module, 3, a planetary speed reducer module, 31, a main body part, 32, a mounting plate, 4, an air cooling radiating unit, 41, an air duct, 42, a filter end cover, 43, an impeller, 44, fins, 5, a positioning rod, 6, a threaded rod, 7, a water cooling radiating unit, 71, an inner ring plate, 72, a baffle ring, 73 a first baffle plate, 74, a second baffle plate, 75, an outer ring plate, 76, a liquid inlet nozzle, 77, a liquid outlet nozzle, 78, a fixed ring and 79, and a connecting sheet.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Specific implementations of the invention are described in detail below in connection with specific embodiments.
Referring to fig. 1 to 7, the embodiment of the invention provides a half-direct-drive permanent magnet synchronous frequency conversion integrated machine, which comprises a motor main body module 1, a frequency converter module 2 and a planetary reducer module 3, wherein an air cooling heat dissipation unit 4 is arranged on the motor main body module 1, and a water cooling heat dissipation unit 7 is arranged on the planetary reducer module 3;
The motor main body module 1 comprises a shell part 11 and a core body part 12 arranged in the shell part 11, a space is reserved between the shell part 11 and the core body part 12, a plurality of annularly distributed positioning rods 5 are also fixed on the front end cover of the motor main body module 1, a concentric threaded rod 6 is fixed at the other end of the positioning rod 5, and the diameter of the threaded rod 6 is smaller than that of the positioning rod 5;
The planetary reducer module 3 is composed of a mounting plate 32 and a main body 31 fixed to the mounting plate 32, the mounting plate 32 has a plurality of holes, the threaded rod 6 passes through the mounting plate 32 through the holes and is fixed by nuts, and the positioning rod 5 abuts against the mounting plate 32.
In the device, an output shaft of a motor main body module 1 is connected with a shaft in a planetary reducer module 3 through a spline so as to realize the requirement of outputting low rotation speed, then a frequency converter module 2 is arranged at the top or side surface of the motor main body module 1 so as to realize the requirement of vector accurate control, and finally a semi-direct-drive permanent magnet synchronous frequency conversion integrated machine is formed and drives load equipment through realizing low-speed high torque and vector frequency conversion control. The semi-direct-drive permanent magnet synchronous frequency conversion integrated machine has the characteristics of compact overall structure, small occupied area, convenient use, attractive appearance, strong mobility, high power density, high control precision, good equipment stability and the like;
For the installation between the motor main body module 1 and the planetary reducer module 3, a plurality of positioning rods 5 are fixed at the front end cover of the motor, a threaded rod 6 is fixed at the other end of each positioning rod 5, and a hole corresponding to the threaded rod 6 is formed in the mounting plate 32, so that the threaded rod 6 can directly penetrate through the hole and then is reinforced through a nut to realize the installation of the planetary reducer module 3;
an air cooling radiating unit 4 is also arranged on the motor main body module 1, and the air cooling radiating unit 4 takes the motor main body module 1 as a driving source, so that the air cooling radiating unit 4 can be started when the motor runs, and redundant energy consumption is not needed;
The planetary reducer module 3 still adopts the water cooling unit 7 to dissipate heat for cooling use, and the air cooling generated during the operation of the air cooling unit 4 can also act on the planetary reducer module 3, and the cooling effect on the planetary reducer module 3 can be further improved when the water cooling unit 7 on the planetary reducer module 3 is matched for use together.
In the embodiment of the present invention, referring to fig. 3 and 4, the air-cooled heat dissipation unit 4 includes an air duct 41, the air duct 41 is composed of a housing portion 11, a core portion 12 and a plurality of partitions fixed therebetween, the air duct 41 is disposed along the length direction of the housing portion 11, an air inlet opening is formed in a rear end shell of the housing portion 11, an air outlet opening is formed in a front end shell, so that air flow enters from the rear end of the motor main body module 1 and is led out from the front end, and a filter end cover 42 covering the air inlet opening is fixed at the tail end of the housing portion 11;
an impeller 43 is also fixed on the output shaft of the motor main body module 1, the impeller 43 is opposite to the front end air outlet opening of the motor main body module 1, and the impeller 43 is positioned between the front end cover of the motor main body module 1 and the mounting plate 32;
meanwhile, a plurality of fins 44 are also installed inside the air duct 41.
It should be noted that, for the air-cooled heat dissipation unit 4, the impeller 43 is mounted on the output shaft in the motor main body module 1, so that when the motor runs, the impeller 43 can be directly driven to rotate at high speed, so that air flow enters the air duct 41 from the opening on the rear end cover, and the heat generated by the motor during running can be taken away through the air duct 41, thereby realizing the heat dissipation operation of the motor;
Because the planetary reducer module 3 is not directly mounted on the motor main body module 1, and the output shaft of the motor needs to pass through the space and be mounted with the planetary reducer module 3, that is, the outside of the output shaft in the space has no limitation, the impeller 43 is mounted at the position, so that the whole device is more compact, the space is utilized more thoroughly, the rotating speed of the output shaft of the motor is not reduced, still has higher rotating speed, the rotating speed of the impeller 43 is faster, and the air cooling effect is better.
In the embodiment of the present invention, referring to fig. 5 to 7, the water cooling unit 7 includes an inner ring plate 71, the inner ring plate 71 is concentrically disposed outside the main body 31, a baffle ring 72 is integrally connected to the circumferential outer wall of the inner ring plate 71 at a position of a bonding edge, a first baffle plate 73 is also fixed, two ends of the first baffle plate 73 are fixed to the baffle ring 72, a plurality of second baffle plates 74 distributed along the axial direction and concentrically disposed with the inner ring plate 71 are also fixed to the circumferential outer wall of the inner ring plate 71, the second baffle plates 74 are non-closed circular rings, and only one end is fixed to the first baffle plate 73, and a water channel through which water flows is formed among the inner ring plate 71, the baffle ring 72, the first baffle plate 73 and the second baffle plates 74;
The outside of the inner ring plate 71 is also provided with a concentric outer ring plate 75, the outer ring plate 75 is tightly abutted against the baffle ring 72, the first baffle plate 73 and the second baffle plate 74 and is sealed by rubber strips, and a liquid inlet nozzle 76 and a liquid outlet nozzle 77 which are communicated with a water channel are arranged on the outer ring plate 75;
Meanwhile, a fixed ring 78 is fixed outside the main body 31, a plurality of annularly distributed connecting pieces 79 are fixed outside the circumference of the fixed ring 78, the other ends of the connecting pieces 79 are fixed with the inner ring plate 71, and a channel for air supply flow is formed between the fixed ring 78 and the inner ring plate 71 and corresponds to the impeller 43;
the fixing ring 78, the connecting piece 79 and the inner ring plate 71 are made of aluminum or copper.
When the planetary reducer module 3 is subjected to water cooling operation, a medium is led into the water channel from the liquid inlet nozzle 76, then flows in a ring shape along water flow, completely covers the main body part 31, and finally is led out from the liquid outlet nozzle 77, so that the water cooling operation of the planetary reducer module 3 is realized;
The fixing ring 78 is fixed outside the main body 31, and the outer part of the fixing ring is connected with the inner ring plate 71 through the connecting sheet 79, so that the inner ring plate 71 can be supported, meanwhile, a channel is formed between the fixing ring 78 and the inner ring plate 71, and the channel corresponds to the position of the impeller 43, so that air flow can be led into the channel in the running process of the impeller 43, and the fixing ring 78, the connecting sheet 79 and the inner ring plate 71 are made of copper or aluminum, have good heat conducting performance, and have obvious heat dissipation effect in cooperation with air cooling;
The air flow introduced into the planetary reducer module 3 through the impeller 43 is led out from the motor main body module 1, and therefore has a certain amount of heat, while the channel is located between the main body 31 and the water cooling unit 7, so that the heat conducted from the main body 31 to the inside of the area is higher than the heat contained in the air flow, and therefore the air flow can cool the main body 31 when passing through the channel.
The foregoing is only illustrative of the present invention and is not to be construed as limiting the scope of the invention, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present invention and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the invention.
Claims (9)
1. The utility model provides a half direct drive permanent magnet synchronous frequency conversion all-in-one, includes motor main part module (1), converter module (2) and planetary reducer module (3), its characterized in that:
The planetary reducer module (3) is arranged on the front end cover of the motor main body module (1), an output shaft of the motor main body module (1) is connected with a shaft of the planetary reducer module (3) through a spline, and a certain interval is reserved between the planetary reducer module (3) and the motor main body module (1);
An air cooling radiating unit (4) is arranged on the motor main body module (1), an opening for air inlet in the air cooling radiating unit (4) is positioned at a rear end cover, an opening for air outlet is positioned at a front end cover and faces to the position of the planetary reducer module (3), and the guided air also passes through the planetary reducer module (3) to realize air cooling of the planetary reducer module (3);
the planetary reducer module (3) is also provided with a water cooling unit (7) which is matched with the air cooling unit (4) to cool the planetary reducer module (3).
2. The semi-direct drive permanent magnet synchronous variable frequency all-in-one machine according to claim 1, wherein the motor main body module (1) comprises a housing part (11) and a core part (12) mounted inside the housing part (11), and a space is arranged between the housing part (11) and the core part (12).
3. The semi-direct-drive permanent magnet synchronous variable frequency integrated machine according to claim 1, wherein the air cooling unit (4) comprises an air duct (41), the air duct (41) is composed of a shell part (11), a core part (12) and a plurality of partition boards fixed between the shell part and the core part, the air duct (41) is arranged along the length direction of the shell part (11) so that air flow enters from the rear end of the motor main body module (1) and is led out from the front end, and a filter end cover (42) covering an air inlet opening is fixed at the tail end of the shell part (11);
An impeller (43) is further fixed on the output shaft of the motor main body module (1), and the impeller (43) corresponds to the front end air outlet opening of the motor main body module (1).
4. A semi-direct drive permanent magnet synchronous variable frequency all-in-one machine according to claim 3, characterized in that a plurality of fins (44) are also installed inside the air duct (41).
5. The semi-direct-drive permanent magnet synchronous variable frequency all-in-one machine according to claim 1, wherein a plurality of annularly distributed positioning rods (5) are further fixed on a front end cover of the motor main body module (1), concentric threaded rods (6) are fixed at the other ends of the positioning rods (5), and the diameter of the threaded rods (6) is smaller than that of the positioning rods (5).
6. The semi-direct drive permanent magnet synchronous variable frequency integrated machine according to claim 1, wherein the planetary reducer module (3) is composed of a mounting plate (32) and a main body part (31) fixed on the mounting plate (32), the mounting plate (32) is provided with a plurality of holes, a threaded rod (6) penetrates through the mounting plate (32) through the holes and is fixed through nuts, and a positioning rod (5) abuts against the mounting plate (32);
An impeller (43) in the air cooling radiating unit (4) is positioned between the front end cover of the motor main body module (1) and the mounting plate (32).
7. The semi-direct-drive permanent magnet synchronous variable frequency integrated machine according to claim 1, wherein the water cooling unit (7) comprises an inner ring plate (71), the inner ring plate (71) is concentrically arranged outside the main body part (31), a baffle ring (72) is integrally connected to the circumferential outer wall of the inner ring plate (71) and the position of the joint edge, a first baffle plate (73) is also fixed, two ends of the first baffle plate (73) are fixed with the baffle ring (72), a plurality of second baffle plates (74) which are distributed along the axial direction and are concentrically arranged with the inner ring plate (71) are also fixed to the circumferential outer wall of the inner ring plate (71), only one end of each second baffle plate (74) is fixed with the first baffle plate (73), and a water channel for water supply circulation is formed among the inner ring plate (71), the baffle ring (72), the first baffle plate (73) and the second baffle plates (74);
The outer ring plate (75) is tightly abutted against the baffle ring (72), the first baffle plate (73) and the second baffle plate (74) and sealed through rubber strips, and a liquid inlet nozzle (76) and a liquid outlet nozzle (77) which are communicated with a water channel are arranged on the outer ring plate (75).
8. The semi-direct-drive permanent magnet synchronous variable frequency all-in-one machine according to claim 7, wherein a fixed ring (78) is further fixed outside the main body part (31), a plurality of annularly distributed connecting pieces (79) are fixed outside the circumference of the fixed ring (78), the other ends of the connecting pieces (79) are fixed with the inner ring plate (71), and a channel for air supply flow is formed between the fixed ring (78) and the inner ring plate (71), and corresponds to the impeller (43).
9. The semi-direct drive permanent magnet synchronous variable frequency all-in-one machine according to claim 7, wherein the fixing ring (78), the connecting sheet (79) and the inner ring plate (71) are made of aluminum or copper.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202510035218.9A CN119945042A (en) | 2025-01-09 | 2025-01-09 | A semi-direct drive permanent magnet synchronous frequency conversion integrated machine |
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| CN202510035218.9A CN119945042A (en) | 2025-01-09 | 2025-01-09 | A semi-direct drive permanent magnet synchronous frequency conversion integrated machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120110076A (en) * | 2025-05-09 | 2025-06-06 | 胜利油田顺天节能技术有限公司 | Internal air-cooled plunger pump direct-drive permanent magnet motor with vibration reduction and stabilization structure |
-
2025
- 2025-01-09 CN CN202510035218.9A patent/CN119945042A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120110076A (en) * | 2025-05-09 | 2025-06-06 | 胜利油田顺天节能技术有限公司 | Internal air-cooled plunger pump direct-drive permanent magnet motor with vibration reduction and stabilization structure |
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