CN216873107U - Frequency-changing speed-regulating ac asynchronous motor - Google Patents
Frequency-changing speed-regulating ac asynchronous motor Download PDFInfo
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- CN216873107U CN216873107U CN202220301185.XU CN202220301185U CN216873107U CN 216873107 U CN216873107 U CN 216873107U CN 202220301185 U CN202220301185 U CN 202220301185U CN 216873107 U CN216873107 U CN 216873107U
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- fan
- driven shaft
- asynchronous motor
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Abstract
The utility model relates to a variable-frequency speed-regulating alternating-current asynchronous motor which comprises a shell, wherein a rotating shaft is arranged in the shell and used for fixing a rotor; the driven shaft is arranged on the right side of the rotating shaft and is coaxial with the rotating shaft, and a fan is fixedly arranged on the driven shaft; an electromagnetic clutch is arranged between the rotating shaft and the driven shaft; the electromagnetic clutch comprises a transmission disc fixedly arranged on the rotating shaft, an iron core rotatably arranged on the rotating shaft and a connecting disc fixedly arranged at one end of the driven shaft; an attraction disc is fixed on the connecting disc through an elastic sheet, a gap is formed between the end face of the transmission disc, facing the attraction disc, and the attraction disc, an accommodating cavity for accommodating an iron core is formed in the end face of the transmission disc, facing away from the attraction disc, part or all of the iron core is positioned in the accommodating cavity, a coil accommodating groove is formed in the end face of the iron core, a coil is arranged in the coil accommodating groove, and the position of the coil accommodating groove corresponds to the position of the attraction disc; so that the rotation speed of the fan can be controlled.
Description
Technical Field
The utility model belongs to the technical field of motors, and particularly relates to a variable-frequency speed-regulating alternating-current asynchronous motor.
Background
The variable frequency speed regulating motor is called as variable frequency motor for short, is a general name of a motor driven by a frequency converter, and has the advantage of having a starting function; the resistance values of the stator and the rotor are reduced by adopting an electromagnetic design; the method is suitable for frequent speed change under different working conditions; energy is saved to a certain extent.
The prior patent of the utility model with the publication number of CN106685147B discloses a variable frequency speed-regulating three-phase asynchronous motor, which comprises a base, a fixed ring for fixing a stator core is arranged at the inner side of the rear end of the base, a temperature sensor is arranged on the fixed ring, a front end cover and a rear end cover are arranged at the front side and the rear side of the base, a rotor is fixed in the base, bearings are arranged at the two ends of a rotor shaft, bearing supports are arranged on the front end cover and the rear end cover, vent holes are arranged on the front end cover and the rear end cover, a fan and a fan cover are arranged at the rear side of the rear end cover, and a junction box is arranged on the base.
Most of the existing speed regulating motors are not provided with cooling fans, and in a few motors provided with the cooling fans, the fans are directly driven by a motor rotating shaft, the rotating speed of the fans is equal to that of the rotating shaft, and the rotating shaft rotating fans must rotate and cannot control the rotating speed of the fans.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a variable frequency speed-regulating ac asynchronous motor, so as to solve the technical problem that the rotation speed of a fan is equal to the rotation speed of a rotating shaft and the rotation speed of the fan cannot be controlled in the prior art.
In order to achieve the purpose, the technical scheme of the variable-frequency speed-regulating alternating-current asynchronous motor adopted by the utility model is as follows:
variable Frequency Speed Governing (VFSG) AC asynchronous machine includes:
a housing;
rotating shaft: the rotating shaft is arranged in the shell and used for fixing the rotor;
driven shaft: the fan is arranged on the right side of the rotating shaft and is coaxial with the rotating shaft, and the driven shaft is fixedly provided with the fan;
an electromagnetic clutch is arranged between the rotating shaft and the driven shaft;
the electromagnetic clutch comprises a transmission disc fixedly arranged on the rotating shaft, an iron core rotatably arranged on the rotating shaft and a connecting disc fixedly arranged at one end of the driven shaft;
the connecting disc is fixedly provided with an attraction disc through an elastic sheet, a gap is formed between the end face of the transmission disc facing the attraction disc and the attraction disc, the end face of the transmission disc departing from the attraction disc is provided with a containing cavity for containing the iron core, part or all of the iron core is positioned in the containing cavity, the end face of the iron core is provided with a coil containing groove, a coil is arranged in the coil containing groove, and the position of the coil containing groove corresponds to the position of the attraction disc.
Has the advantages that: according to the variable-frequency speed-regulating alternating-current asynchronous motor, when a fan needs to be started, the coil in the coil accommodating groove is electrified, the electrified coil generates a magnetic field, so that an attraction disc fixedly installed on a connecting disc through an elastic sheet can be attracted, a transmission disc drives the connecting disc to rotate through the attraction disc, and the connecting disc drives a driven shaft to rotate, so that the fan on the driven shaft rotates; when the fan is required to stop, the coil in the coil accommodating groove is stopped to be electrified, and the coil does not generate a magnetic field at the moment, so that the attraction disc cannot be adsorbed on the transmission disc, namely, a gap exists between the attraction disc and the transmission disc, therefore, when the transmission disc rotates along with the rotating shaft, the attraction disc cannot rotate along with the rotating shaft, the connecting disc and the driven shaft are kept static at the moment, and the fan is also kept static; therefore, the variable-frequency speed-regulating alternating-current asynchronous motor can control the rotating speed of the fan; it should be explained that the fan of the present invention remains stationary until the rotation speed of the fan is zero, the rotation speed of the fan is not greater than the rotation speed of the rotating shaft when the fan is turned on, and the start-stop control of the fan also belongs to the control of the rotation speed of the fan.
Furthermore, a heat dissipation disc is fixed on the outer peripheral surface of the transmission disc, an iron sheet is arranged in the heat dissipation disc, and a magnet is fixed on the end face, adjacent to the heat dissipation disc, of the connection disc and corresponds to the iron sheet in position.
Has the advantages that: the transmission disc rotates along with the rotating shaft, the transmission disc adsorbs the connecting disc on the end face of the transmission disc through the adsorption effect between the magnet and the iron sheet, and the connecting disc is driven to rotate at a rotating speed lower than that of the transmission disc, so that the low-speed rotation of the fan is realized.
The shell comprises a shell for fixing the stator and a fan cover fixed at the end part of the shell, and a gap for air circulation is reserved between the fan cover and the shell; and one end of the driven shaft, which is far away from the connecting disc, is rotatably arranged in the fan cover.
Has the advantages that: the clearance is arranged so that air generated by the fan in the fan housing can flow to the outer surface of the shell through the clearance, and therefore the variable-frequency speed-regulating alternating-current asynchronous motor is cooled.
Furthermore, a plurality of radiating ribs are uniformly distributed on the outer wall of the shell along the circumferential direction, and gaps are formed between the adjacent radiating ribs.
Has the advantages that: a diversion trench for air flowing is formed between adjacent heat dissipation ribs, so that flowing air can flow through the whole shell conveniently, and the shell is cooled better.
A support frame is arranged in the fan housing, the outer edge of the support frame is fixedly connected with the fan housing, and the driven shaft penetrates through the middle of the support frame and is arranged in a rotating mode relative to the support frame.
Has the advantages that: the structural strength of the fan cover can be increased by arranging the support frame.
Further, the support frame is disposed between the connection disc and the fan in the left-right direction.
Has the advantages that: the position that sets up of support frame can be better for fan place department supports.
The iron core is fixedly connected with the shell, and the rotating shaft penetrates through the iron core and is arranged in a rotating mode relative to the iron core.
Has the advantages that: the structural arrangement of iron core is more stable.
And a flange plate is fixed at the end part of the driven shaft facing the rotating shaft, and the connecting disc is fixed on the flange plate through bolts.
Has the advantages that: the connection stability between connection pad and the driven shaft has been increased in the setting of ring flange.
Drawings
FIG. 1 is a schematic structural diagram of a variable frequency speed-regulating AC asynchronous motor of the utility model;
fig. 2 is a partially enlarged view of a variable speed ac asynchronous motor in fig. 1 at a.
Reference numerals: 1-a shell; 2-wind cover; 3-heat dissipation ribs; 4-a rotating shaft; 5-driven shaft; 6-a transmission disc; 7-an iron core; 8-a coil; 9-a connecting disc; 10-a flange plate; 11-a support frame; 12-a fan; 13-attracting disc; 14-a heat dissipation disc; 15-iron sheet; 16-magnet.
Detailed Description
The technical scheme of the variable-frequency speed-regulating alternating-current asynchronous motor is further described in detail with reference to the attached drawings and the detailed implementation mode:
as shown in fig. 1 and 2, the variable frequency speed regulation ac asynchronous motor of the present invention includes a casing, the casing includes a casing 1 for fixing a stator and a fan housing 2 fixed at an end of the casing 1, a rotating shaft is arranged in the casing 1, a rotor is fixed on the rotating shaft, and the rotor is adapted to the stator on the casing 1 in a rotating manner. The fan housing 2 is a cavity with an opening at one side, and the opening end of the fan housing 2 is fixedly connected with the shell 1 through a screw. A driven shaft 5 is arranged in the fan cover 2, the driven shaft 5 is arranged on the right side of the rotating shaft and is coaxial with the rotating shaft, and a fan is fixedly arranged on the driven shaft 5. An electromagnetic clutch is arranged between the rotating shaft and the driven shaft 5, and when the electromagnetic clutch is in a closed state, the rotating shaft drives the driven shaft 5 to rotate through the electromagnetic clutch so as to drive the fan 12 to rotate; when the electromagnetic clutch is in the off state, the transmission connection between the rotating shaft and the driven shaft 5 is disconnected, so that the rotation of the rotating shaft will not drive the driven shaft 5 to rotate, and the fan 12 is stopped at this time. Therefore, the variable-frequency speed-regulating alternating-current asynchronous motor can realize the start-stop control of the fan 12.
Specifically, the electromagnetic clutch includes a transmission disc 6 fixedly mounted on the rotating shaft, an iron core 7 rotatably mounted on the rotating shaft, and a connection disc 9 fixedly mounted on one end of the driven shaft 5. Specifically, a key groove is formed in the rotating shaft, and the transmission disc 6 is installed on the rotating shaft through the matching of the key and the key groove. In order to facilitate the fixed connection between the connecting disc 9 and the driven shaft 5, in the embodiment, a flange 10 is fixedly arranged at one end of the driven shaft 5 facing the rotating shaft, and the connecting disc 9 is fixedly connected with the flange 10 by bolts, so that the fixed connection between the connecting disc 9 and the driven shaft 5 is realized.
The connection disc 9 includes a circular connection portion perpendicular to the driven shaft 5 and a connection ring disposed radially outside the circular connection portion, the connection ring being disposed on the left side of the circular connection portion and integrally disposed with the circular connection portion. A round suction disc 13 is fixed at one end of the connecting ring facing the transmission disc 6 through an elastic sheet, and a gap is arranged between the end surface of the transmission disc 6 facing the suction disc 13 and the suction disc 13.
The one end of casing 1 towards fan housing 2 is provided with the turn-ups, and iron core 7 passes through screw and turn-ups fixed connection in order to realize iron core 7 for the fixed connection of casing 1, and the perforation that supplies the pivot to pass is seted up at iron core 7 center, and the pivot passes and rotates the setting for iron core 7 in following the perforation of iron core 7.
The terminal surface that deviates from actuation dish 13 of driving plate 6 offers the chamber that holds iron core 7, and in this embodiment, iron core 7 part is located and holds the intracavity, and in other embodiments, iron core 7 all is located and holds the intracavity. The right end face of the iron core 7 is provided with a coil 8 accommodating groove, a coil 8 is arranged in the coil accommodating groove, and the position of the coil 8 accommodating groove corresponds to the position of the attraction disc 13. When the fan 12 needs to be started, the coil 8 in the coil accommodating groove is electrified, the electrified coil 8 generates a magnetic field, so that an attraction disc 13 fixedly arranged on the connecting disc 9 through an elastic sheet can be attracted, the attraction disc 13 is tightly attracted on the transmission disc 6, the transmission disc 6 drives the connecting disc 9 to rotate through the attraction disc 13, and the connecting disc 9 drives the driven shaft 5 to rotate, so that the fan 12 on the driven shaft 5 rotates; when the fan 12 is required to stop, the coil 8 in the coil accommodating groove is stopped to be electrified, at the moment, the coil 8 cannot generate a magnetic field, so that the attraction disc 13 cannot be attracted on the transmission disc, namely, a gap exists between the attraction disc 13 and the transmission disc 6, therefore, when the transmission disc 6 rotates along with the rotating shaft, the attraction disc 13 cannot rotate along with the rotating shaft, the connecting disc 9 and the driven shaft 5 are kept static at the moment, and the fan 12 is also kept static.
A heat dissipation disc 14 is fixed on the outer peripheral surface of the transmission disc 6, an iron sheet 15 is arranged in the heat dissipation disc 14, a magnet 16 is fixed on the end surface of the connecting disc 9 adjacent to the heat dissipation disc 14, and the magnet 16 corresponds to the iron sheet 15. The pivot rotates, and driving plate 6 rotates along with the pivot, and driving plate 6 passes through the adsorption between 16 and the iron sheet 15 of magnet and adsorbs connection pad 9 on driving plate 6 terminal surface to drive connection pad 9 and rotate with the rotational speed that is less than driving plate 6, thereby realize fan 12's low-speed rotation. In order to increase the adsorption between the transmission disc 6 and the connecting disc 9, the number of the magnets 16 is multiple, and the magnets 16 are installed on the connecting disc 9 through a fixing structure, wherein the fixing structure is the prior art and is not described again; the iron piece 15 is ring-shaped.
In this embodiment, a gap for air circulation is reserved between the fan housing 2 and the housing 1, one end of the driven shaft 5, which is far away from the connecting disc 9, is rotatably disposed in the fan housing 2, a plurality of heat dissipation ribs 3 are uniformly distributed on the outer wall of the housing 1 along the circumferential direction, and the gap between the fan housing 2 and the housing 1 is formed between adjacent heat dissipation ribs 3.
A supporting frame 11 is arranged in the fan housing 2, the outer edge of the supporting frame 11 is fixedly connected with the fan housing 2, and the driven shaft 5 penetrates through the middle of the supporting frame 11 and is arranged in a rotating mode relative to the supporting frame 11. In the present embodiment, the support bracket 11 is provided between the connection plate 9 and the fan 12 in the left-right direction.
When the variable-frequency speed-regulating alternating-current asynchronous motor is used, when the fan 12 needs to rotate at a high speed, the coil 8 in the coil accommodating groove is electrified, the electrified coil 8 generates a magnetic field, so that the attraction disc 13 fixedly arranged on the connecting disc 9 through the elastic sheet can be attracted, the attraction disc 13 is tightly attracted on the transmission disc 6, meanwhile, the iron sheet 15 on the heat dissipation disc 14 of the transmission disc 6 and the magnet 16 on the connecting disc 9 are mutually attracted, the attraction force between the connecting disc 9 and the attraction disc 13 on the connecting disc 9 and the transmission disc 6 is also increased, the transmission disc 6 drives the connecting disc 9 to rotate through the attraction disc 13, the connecting disc 9 drives the driven shaft 5 to rotate, and the fan 12 on the driven shaft 5 rotates at a high rotating speed; when fan 12 low-speed rotation is required, coil 8 outage in the coil storage tank, only through iron sheet 15 on the heat dissipation dish 14 of driving disk 6 and magnet 16 on the connection pad 9 inter attraction this moment, at this moment, the pivot rotates, driving disk 6 rotates along with the pivot, driving disk 6 passes through the adsorption between magnet 16 and the iron sheet 15 and adsorbs connection pad 9 on driving disk 6 terminal surface to drive connection pad 9 and rotate with the rotational speed that is less than driving disk 6, thereby realize fan 12's low-speed rotation. Therefore, the variable-frequency speed-regulating alternating-current asynchronous motor can realize the control of the rotating speed of the fan 12.
In the above embodiment, the heat dissipation disc is fixed on the outer peripheral surface of the transmission disc, an iron sheet is arranged in the heat dissipation disc, and a magnet is fixed on the end surface of the connection disc adjacent to the heat dissipation disc and corresponds to the iron sheet in position; in other embodiments, the heat dissipation plate may not be provided, and in this case, the iron piece and the magnet may not be provided.
In the above embodiment, a plurality of heat dissipation ribs are uniformly distributed on the outer wall of the housing along the circumferential direction, and the gap is formed between adjacent heat dissipation ribs; in other embodiments, the heat dissipation ribs on the outer wall of the housing may not be provided, at this time, the outer diameter of the fan housing is larger than the outer diameter of the housing, and a through hole communicating the inside of the fan housing and the outer peripheral surface of the housing is formed in the end surface where the fan housing is connected to the housing.
In the above embodiment, the support frame is disposed between the connection disc and the fan in the left-right direction; in other embodiments, the support frame may also be disposed on the right side of the fan.
In the above embodiment, a flange is fixed at the end of the driven shaft facing the rotating shaft, and the connecting disc is fixed on the flange through bolts; in other embodiments, the flange plate may not be provided, and the connecting plate is directly and fixedly connected with the driven shaft.
Claims (8)
1. Variable Frequency Speed Governing (VFSG) AC asynchronous machine, characterized by includes:
a housing;
rotating shaft: the rotating shaft is arranged in the shell and used for fixing the rotor;
driven shaft: the fan is arranged on the right side of the rotating shaft and is coaxial with the rotating shaft, and the driven shaft is fixedly provided with the fan;
an electromagnetic clutch is arranged between the rotating shaft and the driven shaft;
the electromagnetic clutch comprises a transmission disc fixedly arranged on the rotating shaft, an iron core rotatably arranged on the rotating shaft and a connecting disc fixedly arranged at one end of the driven shaft;
the connecting disc is fixedly provided with an attraction disc through an elastic sheet, a gap is formed between the end face of the transmission disc facing the attraction disc and the attraction disc, the end face of the transmission disc departing from the attraction disc is provided with a containing cavity for containing the iron core, part or all of the iron core is positioned in the containing cavity, the end face of the iron core is provided with a coil containing groove, a coil is arranged in the coil containing groove, and the position of the coil containing groove corresponds to the position of the attraction disc.
2. The variable-frequency speed-regulating alternating-current asynchronous motor as claimed in claim 1, wherein a heat dissipation disc is fixed on the outer peripheral surface of the transmission disc, an iron sheet is arranged in the heat dissipation disc, and a magnet is fixed on the end surface of the connecting disc adjacent to the heat dissipation disc and corresponds to the iron sheet in position.
3. The variable-frequency speed-regulating alternating-current asynchronous motor according to claim 1 or 2, wherein the shell comprises a shell for fixing the stator and a fan cover fixed at the end part of the shell, and a gap for air circulation is reserved between the fan cover and the shell; and one end of the driven shaft, which is far away from the connecting disc, is rotatably arranged in the fan cover.
4. The variable frequency speed regulation alternating current asynchronous motor according to claim 3, wherein a plurality of heat dissipation ribs are uniformly distributed on the outer wall of the shell along the circumferential direction, and the gaps are formed between adjacent heat dissipation ribs.
5. The variable frequency speed regulation alternating current asynchronous motor according to claim 3, wherein a support frame is arranged in the fan housing, the outer edge of the support frame is fixedly connected with the fan housing, and the driven shaft passes through the middle of the support frame and is rotatably arranged relative to the support frame.
6. The variable frequency speed variable ac asynchronous motor according to claim 5, wherein the support frame is provided between the connection disc and the fan in the left-right direction.
7. The variable frequency speed regulated ac asynchronous motor according to claim 3, wherein said core is fixedly connected with respect to the housing, and said shaft passes through the core and is rotatably disposed with respect to the core.
8. The variable-frequency speed-regulating alternating-current asynchronous motor according to claim 1 or 2, wherein a flange is fixed to the end part of the driven shaft facing the rotating shaft, and the connecting disc is fixed to the flange through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220301185.XU CN216873107U (en) | 2022-02-15 | 2022-02-15 | Frequency-changing speed-regulating ac asynchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220301185.XU CN216873107U (en) | 2022-02-15 | 2022-02-15 | Frequency-changing speed-regulating ac asynchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216873107U true CN216873107U (en) | 2022-07-01 |
Family
ID=82154732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220301185.XU Active CN216873107U (en) | 2022-02-15 | 2022-02-15 | Frequency-changing speed-regulating ac asynchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216873107U (en) |
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2022
- 2022-02-15 CN CN202220301185.XU patent/CN216873107U/en active Active
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