CN217102620U - Self-air-cooling permanent magnet synchronous traction machine - Google Patents
Self-air-cooling permanent magnet synchronous traction machine Download PDFInfo
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- CN217102620U CN217102620U CN202220487205.7U CN202220487205U CN217102620U CN 217102620 U CN217102620 U CN 217102620U CN 202220487205 U CN202220487205 U CN 202220487205U CN 217102620 U CN217102620 U CN 217102620U
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Abstract
The utility model provides a from synchronous hauler of forced air cooling permanent magnetism, it includes tank tower, stator, rotor shaft and traction sheave, wherein, stator and rotor setting are in the tank tower, and the rotor is rotatory around the stator, and the traction sheave is installed on the rotor shaft, the rotor includes wind wheel and permanent magnet, be equipped with a plurality of fan blades and a plurality of wind-guiding hole on the wind wheel, the tank tower is equipped with the business turn over wind gap. The utility model discloses can effectively reduce the temperature rise of the synchronous hauler of permanent magnetism, when realizing energy-efficient, can also make the material of permanent magnet, stator core, stator coil obtain effectual utilization.
Description
Technical Field
The utility model belongs to the technical field of the elevator technique and specifically relates to synchronous hauler technical field of permanent magnetism.
Background
The traditional permanent magnet synchronous traction machine for the elevator is generally of a closed or semi-closed structure, a stator, a rotor and a permanent magnet are arranged in a relatively closed space, the heat dissipation of the stator, the rotor and the permanent magnet only depends on the outer vertical surface of a box frame or the rotor, the heat dissipation is relatively poor, and the energy consumption is high.
Therefore, a unique structural design is urgently needed in the field, a self-air-cooling circulation system is formed while the permanent magnet synchronous traction machine is in operation, and the effect of reducing the internal temperature rise of the permanent magnet synchronous traction machine is achieved. The materials of the permanent magnet, the stator core and the stator coil are effectively utilized while high efficiency and energy conservation are realized.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem that the synchronous hauler of current permanent magnetism exists, the utility model provides a from synchronous hauler of forced air cooling permanent magnetism, it can effectively reduce the inside temperature rise of synchronous hauler of permanent magnetism.
In order to achieve the above object, the utility model provides a from synchronous hauler of forced air cooling permanent magnetism, it includes tank tower, stator, rotor shaft and driving sheave, wherein, stator and rotor setting are in the tank tower, and the rotor is rotatory around the stator, and the driving sheave is installed on the rotor shaft, the rotor includes wind wheel and permanent magnet, be equipped with a plurality of fan blades and a plurality of guiding hole on the wind wheel, the tank tower is equipped with the business turn over wind gap.
Preferably, the box frame comprises a front box frame and a rear end cover, and the stator is arranged on the front box frame or the rear end cover.
Preferably, at least one of the box frame and the rear end cover is provided with an air inlet and an air outlet.
Preferably, a step is arranged on the inner side of the front box frame, and the stator is arranged on the outer peripheral surface of the step; or, a step is arranged on the inner side of the rear end cover, and the stator is arranged on the outer peripheral surface of the step.
Preferably, the wind wheel includes a circular plate and an outer circumferential plate extending perpendicularly from an outer circumferential edge of the circular plate with respect to the circular plate, and the permanent magnet is disposed inside the outer circumferential plate.
Preferably, the wind wheel further comprises a hub disposed at the center of the circular plate, and the rotor shaft passes through a hole in the hub and is fixedly connected to the hub.
Preferably, the fan blades extend radially outward from the outer peripheral surface of the hub.
Preferably, the height of the fan blades is gradually smaller as they extend radially outward; the fan blades extend radially outward along a straight line or the fan blades extend radially outward along an arc.
Preferably, the rotor shaft is supported by main and secondary bearings of the front housing and the rear end cap, respectively.
Preferably, the wind wheel is arranged on the rotor shaft and rotates synchronously with the rotor shaft and the traction wheel; the wind guide holes of the wind wheel are in the shape of a circle, a triangle, a trapezoid, a polygon or a plurality of arc gaps formed around the center of a circular plate.
The utility model has the advantages that:
according to the utility model discloses a synchronous hauler of permanent magnetism has introduced automatic forced air cooling circulation system, adopt the wind wheel as air cooling system's drive element, rely on the water conservancy diversion effect of wind wheel, make the air with certain speed, certain mode is through each spare part that generates heat, utilize the heat exchange between air and each spare part that generates heat, take away the stator, the rotor, and pile up heat on spare parts such as permanent magnet, realize the radiating mode of forced convection, thereby reduce the temperature rise of the synchronous hauler of permanent magnetism, when making its high efficiency energy-conservation, still realized the permanent magnet, stator core, the high-efficient utilization of stator coil material.
The utility model discloses an unique structural design has formed from air-cooled circulation system, reaches the effect that reduces the inside temperature rise of synchronous hauler of permanent magnetism. And, adopt the utility model discloses a structural design forms from air-cooled circulation system has realized energy-efficient, makes permanent magnet, stator core, stator coil's material obtain effectual utilization.
The utility model discloses can effectively reduce the temperature rise, make the hauler more energy-conserving high-efficient, under the requirement of equal temperature rise, the cost is lower.
The device of the present invention has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following embodiments incorporated herein, which together serve to explain certain principles of the invention.
Drawings
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. For purposes of clarity, the same reference numbers will be used in different drawings to identify the same elements. Furthermore, those skilled in the art will appreciate that the particular embodiments illustrated in the drawings are illustrative only and are not intended to limit the scope of the invention, and that the drawings of the invention are not necessarily drawn to scale. Wherein, the first and the second end of the pipe are connected with each other,
fig. 1 is a schematic cross-sectional view showing a self-air-cooling permanent magnet synchronous traction machine according to a first embodiment of the present invention.
Fig. 2A shows a front view of the wind rotor 7.
Fig. 2B shows a rear perspective view of the wind wheel 7.
Fig. 2C shows a front perspective view of the wind wheel 7.
Fig. 3 is a schematic cross-sectional view showing a self-air-cooling permanent magnet synchronous traction machine according to a second embodiment of the present invention.
Reference numerals:
1 rotor shaft 2 traction sheave
3 front box frame 3a opening
4 stator 5 permanent magnet
6 rear end cover 7 wind wheel
7A circular plate 7B outer peripheral plate
7D fan blade of 7C axle hub
7E air guide hole 8 main bearing
9 auxiliary bearing
10 encoder.
It is to be understood that the appended drawings are not necessarily to scale, presenting a simplified representation of various features illustrative of the basic principles of the invention. The specific design features disclosed herein, including, for example, specific dimensions, orientations, locations, and shapes, will be determined in part by the particular environment in which they are used and/or used.
In the drawings, like numerals refer to like or equivalent parts throughout the several views of the drawings.
Detailed Description
Reference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. While the present invention will be described in conjunction with the exemplary embodiments, it will be understood that this description is not intended to limit the invention to these exemplary embodiments. On the contrary, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit of the invention and the scope of the invention as defined by the appended claims.
The utility model discloses a from synchronous hauler of forced air cooling permanent magnetism, including tank tower, stator 4, rotor, driving sheave 2, wherein, stator 4 and rotor setting are in the tank tower, and the rotor is rotatory around stator 4, and driving sheave 2 installs on the rotor shaft. The box frame comprises a front box frame 3 and a rear end cover 6; the rotor comprises a wind wheel 7, a permanent magnet 5 and a rotor shaft 1, a plurality of fan blades 7D are arranged on the wind wheel 7, and the rotor rotates around the stator along the shaft 1; a plurality of air guide holes 7E are formed in a wind wheel 7 of the rotor, and an air inlet and an air outlet are formed in the box frame. When the permanent magnet synchronous motor is electrified and rotated, due to the action of the wind wheel 7, air passes through holes and gaps among the stator, the rotor and the box frame at a certain speed and in a certain mode, and heat accumulated on the air is taken out of the box frame by utilizing heat exchange among the air, the stator, the rotor and the permanent magnet, so that a forced convection heat dissipation mode is realized, an air cooling circulation system is formed, the effect of reducing the internal temperature rise of the permanent magnet synchronous traction machine is achieved, and all materials are utilized more efficiently.
First embodiment of the present invention
Fig. 1 is a schematic sectional view showing a self-air-cooling permanent magnet synchronous traction machine according to a first embodiment of the present invention, in which a stator 4 is mounted on a front frame.
The box frame comprises a front box frame 3 and a rear end cover 6. The front case frame 3 and the rear cover 6 are coupled to each other to form an inner space in which the stator 4 and the rotor are installed. The front cabinet frame 3 is formed with an opening 3a as an air inlet and outlet, and air can flow in and out through the opening 3 a.
The stator 4 is mounted on the front case frame 3, wherein a step is formed on the inner side of the front case frame 3, and the stator 4 is mounted on the radially outer side surface of the step. The stator 4 is a concentrated winding.
As shown in fig. 2A to 2C, the rotor has a flat cylindrical shape and includes a circular plate 7A and an outer peripheral plate 7B located on the outer periphery of the circular plate, and the outer peripheral plate 7B extends perpendicularly to the circular plate 7A from the outer peripheral edge of the circular plate 7A. The permanent magnet 5 is located inside the outer peripheral plate 7B so as to be opposed to the stator 4 located on the front case frame 3. A hub 7C is formed at the center of the circular plate 7A, and the rotor shaft 1 passes through the hub 7C and is fixedly connected with the hub 7C. The rotor is set in a rotational movement around the stator 4 along the rotor shaft 1, which brings about a rotation of the rotor shaft 1 when the rotor is rotating.
The rotor comprises a wind wheel 7, and the wind wheel 7 comprises a plurality of fan blades 7D and a plurality of wind guide holes 7E.
The fan blades 7D are formed of a plate extending radially outward from the hub 7C. In this embodiment 8 sectors 7D are provided, but the number of sectors 7D is chosen between 2 and 20 according to the actual situation. Also, in this embodiment, the fan pieces 7D extend radially outward from the outer peripheral surface of the hub 7C, and the height of the fan pieces 7D gradually becomes smaller as they extend radially outward. The fan blade 7D is in the shape of a triangular flat plate, and the fan blade 7D extends radially outward along a straight line. Alternatively, the sector 7D may also be formed in an arc, i.e. extending radially outwards along an arc.
The air guide holes 7E are a plurality of openings formed in the circular plate 7A of the rotor, and are used for the fluid of air. In this embodiment 8 openings are provided, but the number of openings is chosen between 2 and 20 depending on the actual situation. In this embodiment the shape of the opening is trapezoidal, but the shape of the opening can also be chosen as desired, for example taking different shapes such as triangular, circular, trapezoidal, etc. Alternatively, the opening may be replaced by a slit (for example, a slit in the shape of a plurality of concentric circular arc segments centered on the center of the circular plate), and the same may also function to circulate air.
As shown in fig. 1, the front box frame 3 is formed with a recess to accommodate the hub 7C and the fan blades 7D of the rotor, which contributes to a reduction in size and an improvement in space utilization.
A traction sheave 2 is fixed at one end of the rotor shaft 1, and the rotation of the rotor shaft 1 drives the traction sheave 2 to rotate; the other end of the rotor shaft 1 is mounted with an encoder 10. The rotor shaft 1 is rotatably connected to the front housing 3 and the rear end cover by a main bearing 8 and a secondary bearing 9, respectively.
Alternatively, a plurality of openings may be formed in the rear cover 6 to provide a passage for air to flow between the front housing 3, the rotor and the rear cover to facilitate the flow of air.
Through the air inlet and the air outlet arranged on the box frame, when the permanent magnet synchronous motor is electrified and rotated, due to the action of the wind wheel 7, low-temperature air reaches the interior of the box frame from the air inlet of the box frame, the air passes through the stator, the rotor and holes and gaps between the box frame in a certain speed and a certain mode, heat accumulated on the air is taken out of the box frame by utilizing heat exchange between the air and the stator, the rotor and the permanent magnet, high-temperature air near the stator and the rotor of the permanent magnet synchronous tractor is taken away, and then the high-temperature air flows out through the air outlet on the box frame, so that a heat dissipation mode of forced convection is realized, an air cooling circulation system is formed, the effect of reducing the temperature rise in the permanent magnet synchronous tractor is achieved, and all materials are utilized more effectively.
Second embodiment of the present invention
Fig. 3 shows a schematic cross-sectional structure diagram of a self-air-cooling permanent magnet synchronous traction machine according to a second embodiment of the present invention, wherein the stator 4 is mounted on the rear end cover 6.
The second embodiment is the same as the first embodiment except that the position of the stator 4 is different from the position of the stator 4 of the first embodiment. Here, the same parts of the second embodiment as those of the first embodiment will not be described again.
As shown in fig. 3, the self-air-cooling permanent magnet synchronous traction machine according to the second embodiment of the present invention includes a box frame, a stator 4, a rotor, and a traction sheave 2.
The box frame comprises a front box frame 3 and a rear end cover 6. The front case frame 3 and the rear cover 6 are coupled to each other to form an inner space in which the stator and the rotor are installed. The rear cover 6 is formed with an opening (not shown) through which air can flow in or out.
The stator 4 is mounted on the rear end cover 6, wherein a step is formed on the rear end cover 6 so that the stator 4 is mounted on an outer side surface of the step.
The rotor in the second embodiment is identical in structure to the rotor of the first embodiment, but has an opening oriented opposite to that of the first embodiment, i.e., in the second embodiment, the rotor opening is oriented toward the rear end cover (i.e., toward the left), while in the first embodiment, the rotor opening is oriented toward the front housing (i.e., toward the right).
According to the utility model discloses a from synchronous hauler of forced air cooling permanent magnetism, it is rotatory to get up when the PMSM circular telegram, because the effect of wind wheel 7, make the air pass through the stator with certain speed, certain mobile mode, hole and clearance between rotor and the tank tower, utilize air and stator, heat exchange between rotor and the permanent magnet, take out the tank tower with accumulational heat on it, thereby realize the radiating mode of forced convection, the air-cooled circulation system has been formed from this, reach the effect that reduces the inside temperature rise of the synchronous hauler of permanent magnetism. The materials of the permanent magnet, the stator core and the stator coil are effectively utilized while high efficiency and energy conservation are realized.
The air passes through holes and gaps among the stator, the rotor and the box frame in a certain flowing mode, the heat on the stator, the rotor and the permanent magnet is taken away, and the effect of reducing the temperature rise in the permanent magnet synchronous traction machine is achieved. The above-mentioned certain flow pattern means that two or more of conduction, convection and radiation are present at the same time.
Therefore, the low-temperature air reaches the inside of the box frame from the air inlet of the box frame, and takes away heat on the stator and the rotor of the permanent magnet synchronous tractor at a certain speed and in a certain mode, so that the low-temperature air becomes high-temperature air and flows out from the air outlet of the box frame, and the temperature of the stator and the rotor of the tractor is effectively reduced.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to thereby enable others skilled in the art to make and utilize the invention in various exemplary embodiments and with various alternatives and modifications. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (11)
1. The utility model provides a from synchronous hauler of forced air cooling permanent magnetism, its includes tank tower, stator, rotor shaft and traction sheave, wherein, stator and rotor set up in the tank tower, and the rotor is rotatory around the stator, and the traction sheave is installed on the rotor shaft its characterized in that:
the rotor comprises a wind wheel and a permanent magnet, the wind wheel is provided with a plurality of fan blades and a plurality of air guide holes, and the box frame is provided with an air inlet and an air outlet.
2. The self-air-cooling permanent magnet synchronous traction machine as recited in claim 1, wherein the box frame comprises a front box frame and a rear end cover, and the stator is disposed on the front box frame or the rear end cover.
3. The self-air-cooling permanent magnet synchronous traction machine as recited in claim 2, wherein at least one of the box frame and the rear end cover is provided with an air inlet and an air outlet.
4. The self-air-cooling permanent magnet synchronous traction machine as recited in claim 2, wherein a step is provided inside the front box frame, and the stator is provided on an outer circumferential surface of the step; or, a step is arranged on the inner side of the rear end cover, and the stator is arranged on the outer peripheral surface of the step.
5. The self-air-cooling permanent magnet synchronous traction machine as recited in claim 1, wherein the wind wheel includes a circular plate and an outer circumferential plate extending perpendicularly to the circular plate from an outer circumferential edge of the circular plate, the permanent magnet being disposed inside the outer circumferential plate.
6. A self-air-cooling permanent magnet synchronous traction machine as recited in claim 5, wherein the wind wheel further comprises a hub provided at the center of the circular plate, and the rotor shaft passes through a hole in the hub and is fixedly connected to the hub.
7. The self-air-cooling permanent magnet synchronous traction machine as recited in claim 6, wherein the fan blades extend radially outward from an outer circumferential surface of the hub.
8. The self-cooling permanent magnet synchronous traction machine as recited in claim 7, wherein the height of the fan blades is gradually smaller as they extend radially outward; the fan blades extend radially outward along a straight line or the fan blades extend radially outward along an arc.
9. A self-air-cooling permanent magnet synchronous traction machine as recited in claim 2, wherein the rotor shaft is supported by main and sub bearings of the front housing and the rear cover, respectively.
10. The self-air-cooling permanent magnet synchronous traction machine as recited in claim 1, wherein the wind wheel is installed on the rotor shaft and rotates synchronously with the rotor shaft and the traction sheave; the wind guide hole of the wind wheel is in a circular shape, a polygonal shape or a plurality of arc gaps formed around the center of the circular plate.
11. The self-cooling permanent magnet synchronous traction machine according to claim 10, wherein the polygon is a triangle or a trapezoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220487205.7U CN217102620U (en) | 2022-03-08 | 2022-03-08 | Self-air-cooling permanent magnet synchronous traction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220487205.7U CN217102620U (en) | 2022-03-08 | 2022-03-08 | Self-air-cooling permanent magnet synchronous traction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217102620U true CN217102620U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220487205.7U Active CN217102620U (en) | 2022-03-08 | 2022-03-08 | Self-air-cooling permanent magnet synchronous traction machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217102620U (en) |
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- 2022-03-08 CN CN202220487205.7U patent/CN217102620U/en active Active
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