CN213585470U - Compact type wide-frequency running high-speed large-capacity asynchronous motor - Google Patents
Compact type wide-frequency running high-speed large-capacity asynchronous motor Download PDFInfo
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- CN213585470U CN213585470U CN202022773728.1U CN202022773728U CN213585470U CN 213585470 U CN213585470 U CN 213585470U CN 202022773728 U CN202022773728 U CN 202022773728U CN 213585470 U CN213585470 U CN 213585470U
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Abstract
The utility model discloses a compact broadband operation high-speed large-capacity asynchronous motor, which comprises a base, a stator arranged in the base and a rotor matched with the stator, wherein an air-air cooler is arranged on the base, the air-air cooler comprises a box body, an air inlet channel and an air outlet channel are respectively arranged on two sides of the box body, the air inlet channel and the air outlet channel are communicated through a plurality of groups of cooling pipes which axially penetrate through the box body along the motor, and an external forced fan is arranged at the air inlet channel; a plurality of partition plates are arranged in the box body, the partition plates separate the inner space of the box body to form a middle air duct and two side air ducts, the middle air duct is communicated with the upper ends of the two side air ducts, an internal forced fan is arranged at the communication position of the middle air duct and the two side air ducts at the upper end of the box body, and a middle channel communicated with the middle air duct and two side channels communicated with the two side air ducts are respectively arranged on the machine base; the utility model discloses an air-air cooler adopts the inside and outside wind path that sets up, can independently cool off the inside and outside wind path of motor.
Description
Technical Field
The utility model relates to an electrical equipment technical field, in particular to high-speed large capacity asynchronous machine of compact wide band operation.
Background
The method is characterized in that the high-speed high-capacity motor is subjected to frequency conversion speed regulation in places needing variable-speed operation working conditions, and is one of important measures for realizing energy conservation and emission reduction, the high-speed high-capacity motor is long in shafting, large in vibration and low in power density, which are problems faced by motor manufacturers at present, the frequency conversion speed regulation motor which runs in a wide frequency mode on site is particularly required to be met, strict requirements are imposed on the shafting and the operation working condition of the motor, the motor is designed in a compact high-power density mode, and meanwhile, the requirement that the running at different rotating speeds becomes a restriction point for designing and manufacturing the high-.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical scheme who takes for solving above-mentioned purpose is:
a compact type high-speed large-capacity asynchronous motor capable of running in a wide frequency mode comprises a base, a stator and a rotor, wherein the stator is installed in the base, the rotor is matched with the stator, a front end cover and a rear end cover are arranged at the front end and the rear end of the base respectively, the rotor comprises a rotating shaft and a rotor core, bearings are arranged among the front end cover, the rear end cover and the rotating shaft respectively, an air cooler is installed on the upper side of the base and comprises a box body, an air inlet channel and an air outlet channel are arranged on two sides of the box body respectively, the air inlet channel and the air outlet channel are communicated through a plurality of groups of cooling pipes which penetrate through the box body along the axial direction;
a plurality of partition plates are arranged in the box body, the partition plates separate the inner space of the box body to form a middle air duct and two side air ducts, the middle air duct is communicated with the upper ends of the two side air ducts, an internal forced fan is arranged at the communication position of the middle air duct and the two side air ducts at the upper end of the box body, and a middle channel communicated with the middle air duct and two side channels communicated with the two side air ducts are respectively arranged on the machine base;
the motor base is provided with a wind shield for isolating the middle channel and the two side channels, and the lower end of the wind shield is arranged at the end part of the winding of the stator.
Further, the air inlet channel is arranged at the downward opening, and the air outlet channel is arranged at the upward opening.
Furthermore, the inner forcing fans are arranged in multiple numbers along the axial direction of the vertical motor, and the outer forcing fans are arranged in multiple numbers along the axial direction of the vertical motor.
Furthermore, all install amortization subassembly in inlet air channel and the air-out passageway.
Further, the amortization subassembly is including installing the sound absorbing material at inlet air channel inner wall and air-out passageway inner wall respectively, and sound absorbing material passes through the perforated plate fastening and installs at inlet air channel inner wall and air-out passageway inner wall.
Further, the sound-absorbing material has a thickness of 30 mm.
Further, the iron core ventilation channel on the stator and the iron core ventilation channel on the rotor are arranged in a staggered mode.
The utility model discloses the beneficial effect who has does:
1. the utility model relates to a high-speed large capacity asynchronous machine of compact broad-band operation adopts the inside and outside wind path that sets up through empty air cooler, and the cooling tube of outer wind path realizes exchanging with the heat on interior wind path, realizes cooling the motor, and in addition, the forced fan of inside and outside wind path is independent setting, and this empty air cooler can independently cool off inside and outside wind path the motor, and not influenced by main motor rotational speed, can satisfy the variable frequency speed governing operating mode under the motor wide band condition.
2. The utility model discloses in through installing the deep bead at the winding head of stator, cancelled the interior fan on the rotor of motor simultaneously, current design relatively, the rotor of current motor has interior fan structure, because of the interior fan occupies shafting length space and causes the shafting to be long partially, this embodiment can effectively shorten motor frame length like this through the improvement, the rotor adopts and does not take interior fan structure to shorten shafting length, is favorable to the rotor intensity of motor and the improvement of critical speed.
3. The utility model discloses in the stator ventilation flue that passes through the motor and the design of staggering of rotor ventilation flue to pass in and out the access way at empty cooler and increase the amortization subassembly, reach the effect that reduces high-speed rotating electrical machines noise.
Drawings
FIG. 1 is a schematic view of an existing windshield installation;
FIG. 2 is a schematic view of a conventional rotor of an electric motor with an internal fan structure;
FIG. 3 is a schematic structural view of the present invention;
fig. 4 is a schematic view of the installation of the rotor and the stator of the motor of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 3-4, a compact type wide-frequency high-speed large-capacity asynchronous motor adopts a box structure, and comprises a base 3, a stator 14 installed in the base 3, and a rotor 1 matched with the stator 14, wherein a front end cover 4 and a rear end cover 4 are respectively arranged at the front end and the rear end of the base 3, the rotor 1 comprises a rotating shaft 2 and a rotor core, bearings 5 are respectively arranged between the front end cover 4, the rear end cover 4 and the rotating shaft 2, an air cooler is installed on the upper side of the base 3, the air cooler comprises a box body 6, an air inlet channel 7 and an air outlet channel 8 are respectively arranged at two sides of the box body 6, the air inlet channel 7 and the air outlet channel 8 are communicated through a plurality of groups of cooling pipes which axially penetrate through the box body 6 along the motor, and a plurality of external forced fans 9 are installed at the air inlet channel 7, in the embodiment, two external forced fans 9 are arranged at the air inlet channel 7, and are used for passing cold air from the air inlet channel The cooling pipe blows towards the air outlet channel 8, so that the air inlet channel 7, the air outlet channel 8 and the cooling pipe form an outer air path, and the outer air path achieves a cooling effect.
As shown in fig. 3-4, in this embodiment, a plurality of partition boards 11 are arranged inside the box 6, the partition boards 11 separate the space inside the box 6 to form a middle air duct 12 and two side air ducts 13, the middle air duct 12 communicates with the upper ends of the two side air ducts 13, and a plurality of internal forced fans 10 are arranged at the upper end of the box 6 at the communication position of the middle air duct 12 and the two side air ducts 13, in this embodiment, two internal forced fans 10 are arranged, a middle channel 15 communicating with the middle air duct 12 and two side channels 16 communicating with the two side air ducts 13 are respectively arranged on the machine base 3, the stator 14 and the rotor 1 of the motor generate heat when working, air with heat enters the middle air duct 12 through the middle channel 15, the air with heat is blown to the two side air ducts 13 by the plurality of internal forced fans 10 arranged at the upper end of the box 6, and then enters the working space of, thus, the middle duct 12, the two side ducts 13, the middle duct 15, and the two side ducts 16 form a circulating inner air passage.
As shown in fig. 3-4, in this embodiment, the wind shield 17 for isolating the middle channel 15 and the two side channels 16 is installed on the base 3, the lower end of the wind shield 17 is installed at the winding end of the stator 14, and the inner fan 20 on the rotor 1 of the motor is eliminated at the same time, compared with the existing design, as shown in fig. 1-2, the rotor 1 of the existing motor has the structure of the inner fan 20, and the shaft system is longer due to the fact that the inner fan 20 occupies the length space of the shaft system, which can effectively shorten the length of the motor base 3 in this embodiment, and the rotor 1 adopts the structure without the inner fan 20 to shorten the length of the shaft system, which is beneficial to the improvement of the strength.
In this embodiment, when the air conditioner is in operation, the air conditioner is provided with the inner and outer air paths, and the outer air path blows cold air from the air inlet channel 7 to the air outlet channel 8 through the cooling pipes in the air-air cooler under the action of the plurality of outer forced fans 9 installed at the air inlet channel 7; the inner wind path blows the cooling air to the inside of the motor through the two side air channels 13 and the two side channels 16 after the heat exchange of the hot air generated by the heat exchange of the motor stator and rotor 1 is carried out by the inner forced fan 10, so as to form the internal circulation of the motor exchanged with the cooling pipe.
As shown in fig. 3-4, in this embodiment, the air inlet channel 7 is opened downward, and the air outlet channel 8 is opened upward; in order to realize the function of noise reduction, a noise reduction assembly is arranged in each of the air inlet channel 7 and the air outlet channel 8; in this embodiment, preferably, the noise reduction assembly includes sound absorption materials 18 respectively installed on the inner walls of the air inlet channel 7 and the air outlet channel 8, and the sound absorption materials 18 are tightly installed on the inner walls of the air inlet channel 7 and the air outlet channel 8 through perforated plates 19; preferably, in this embodiment, the sound absorbing material 18 has a thickness of 30mm, and the perforated plate 19 has a thickness of 1.2 mm.
As shown in fig. 3 to 4, in order to better achieve the noise reduction effect, in this embodiment, the core ventilation channels on the stator 14 and the core ventilation channels on the rotor 1 are both arranged in a staggered manner, so as to prolong the running channel of sound in the motor, so that the noise reduction effect is better.
The utility model discloses a working process does:
when the air-air cooler works, the inner forced fans 10 and the outer forced fans 9 are started, and the outer air path blows cold air from the air inlet channel 7 to the air outlet channel 8 through cooling pipes in the air-air cooler under the action of the plurality of outer forced fans 9 arranged at the air inlet channel 7; the stator 14 and the rotor 1 of the motor generate heat when working, hot air with heat enters the middle air duct 12 through the middle channel 15, under the action of the inner forced fan 10, the hot air generated by the stator and the rotor 1 of the motor exchanges heat through the cooling pipe of the air-air cooler, and blows cooling air to the interior of the motor through the two side air ducts 13 and the two side channels 16, so as to form the internal circulation of the motor exchanging heat with the cooling pipe, the internal air path and the external air path of the motor exchange heat through the cooling pipe, and take away the heat generated in the motor.
1. The utility model relates to a high-speed large capacity asynchronous machine of compact broad-band operation adopts the inside and outside wind path that sets up through empty air cooler, and the cooling tube of outer wind path realizes exchanging with the heat on interior wind path, realizes cooling the motor, and in addition, the forced fan of inside and outside wind path is independent setting, and this empty air cooler can independently cool off inside and outside wind path the motor, and not influenced by main motor rotational speed, can satisfy the variable frequency speed governing operating mode under the motor wide band condition.
2. The utility model discloses in through installing deep bead 17 at the winding head of stator 14, interior fan 20 on the rotor 1 of motor has been cancelled simultaneously, current design relatively, the rotor 1 of current motor has interior fan 20 structure, because of interior fan 20 occupies shafting length space and causes the shafting to be long partially, this embodiment can effectively shorten motor frame 3 length like this through improving, rotor 1 adopts and does not take interior fan 20 structure to shorten shafting length, be favorable to the improvement of the rotor 1 intensity and the critical speed of motor.
3. The utility model discloses in 14 iron core ventiduct of stator through the motor and the design of staggering of 1 iron core ventiduct of rotor to the access way at empty air cooler increases amortization subassembly, reaches the effect that reduces high-speed rotating electrical machines noise.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A compact type high-speed large-capacity asynchronous motor running in a wide frequency mode comprises a base, a stator and a rotor, wherein the stator is installed in the base, the rotor is matched with the stator, a front end cover and a rear end cover are arranged at the front end and the rear end of the base respectively, the rotor comprises a rotating shaft and a rotor core, bearings are arranged among the front end cover, the rear end cover and the rotating shaft, and an air cooler is installed on the upper side of the base;
a plurality of partition plates are arranged in the box body, the partition plates separate the inner space of the box body to form a middle air duct and two side air ducts, the middle air duct is communicated with the upper ends of the two side air ducts, an internal forced fan is arranged at the communication position of the middle air duct and the two side air ducts at the upper end of the box body, and a middle channel communicated with the middle air duct and two side channels communicated with the two side air ducts are respectively arranged on the machine base;
the motor base is provided with a wind shield for isolating the middle channel and the two side channels, and the lower end of the wind shield is arranged at the end part of the winding of the stator.
2. The compact type asynchronous motor with wide frequency, high speed and large capacity as claimed in claim 1, wherein said air inlet channel is open downward and said air outlet channel is open upward.
3. The compact type high-speed high-capacity asynchronous motor operating in wide frequency range according to claim 2, wherein the number of the inner forced air fans is plural along the vertical motor axial direction, and the number of the outer forced air fans is plural along the vertical motor axial direction.
4. The compact type asynchronous motor with wide frequency, high speed and large capacity as claimed in claim 3, wherein the air inlet channel and the air outlet channel are both provided with a noise reduction component.
5. The compact type high-speed high-capacity asynchronous motor capable of operating in a wide frequency range according to claim 4, wherein the noise reduction assembly comprises sound absorbing materials respectively installed on the inner wall of the air inlet channel and the inner wall of the air outlet channel, and the sound absorbing materials are tightly installed on the inner wall of the air inlet channel and the inner wall of the air outlet channel through perforated plates.
6. A compact, wide-band, high-speed, high-capacity asynchronous machine according to claim 5, characterized in that said sound-absorbing material has a thickness of 30 mm.
7. The compact type asynchronous motor with wide frequency, high speed and large capacity as claimed in claim 6, wherein the core ventilation channels on the stator and the core ventilation channels on the rotor are arranged in a staggered way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022773728.1U CN213585470U (en) | 2020-11-26 | 2020-11-26 | Compact type wide-frequency running high-speed large-capacity asynchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022773728.1U CN213585470U (en) | 2020-11-26 | 2020-11-26 | Compact type wide-frequency running high-speed large-capacity asynchronous motor |
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| CN213585470U true CN213585470U (en) | 2021-06-29 |
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| CN202022773728.1U Active CN213585470U (en) | 2020-11-26 | 2020-11-26 | Compact type wide-frequency running high-speed large-capacity asynchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675994A (en) * | 2021-07-28 | 2021-11-19 | 大连钰霖电机有限公司 | Box-type motor air direct cooling structure |
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2020
- 2020-11-26 CN CN202022773728.1U patent/CN213585470U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675994A (en) * | 2021-07-28 | 2021-11-19 | 大连钰霖电机有限公司 | Box-type motor air direct cooling structure |
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