CN116979742A - Ventilating and heat-dissipating structure of motor and heat-dissipating adjusting method thereof - Google Patents
Ventilating and heat-dissipating structure of motor and heat-dissipating adjusting method thereof Download PDFInfo
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- CN116979742A CN116979742A CN202310949639.3A CN202310949639A CN116979742A CN 116979742 A CN116979742 A CN 116979742A CN 202310949639 A CN202310949639 A CN 202310949639A CN 116979742 A CN116979742 A CN 116979742A
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- motor
- heat dissipation
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000017525 heat dissipation Effects 0.000 claims abstract description 42
- 238000009423 ventilation Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000009529 body temperature measurement Methods 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
Abstract
The invention discloses a ventilation and heat dissipation structure of a motor and a heat dissipation adjusting method thereof, wherein the ventilation and heat dissipation structure comprises a machine base, a rotor, a stator and an external air duct, the rotor and the stator divide the interior of the machine base into a front cavity and a rear cavity, the front cavity is provided with an air outlet, and the rear cavity is communicated with the external air duct; the external air duct is internally provided with a fan, and when the fan works, air inlet of the external air duct enters the front cavity through a gap between the rotor and the stator and is discharged from the air outlet under the positive pressure effect; the rotor is arranged on the motor shaft; a wind passing hole channel is formed in the motor shaft; the air inlet of the air passage is correspondingly positioned in the rear cavity, and the air outlet of the air passage is communicated to the outside of the machine base; an air inlet of the air passage is provided with an adjusting valve, a first temperature measuring element is arranged at an air outlet of the air passage, a second temperature measuring element is arranged at an air outlet of the front cavity, and the opening size of the adjusting valve is related to the temperature measuring difference value of the first temperature measuring element and the second temperature measuring element. The motor has an independent heat dissipation structure which is easy to adjust.
Description
Technical Field
The invention relates to the field of motors, in particular to a ventilation and heat dissipation structure of a motor and a heat dissipation adjusting method thereof.
Background
The heat dissipation blades of the motor are generally coaxially arranged on the motor shaft, and when the motor shaft rotates, the heat dissipation blades also rotate to generate axial air flow, so that heat dissipation is carried out on the motor body. However, the disadvantage of this heat dissipation method is that the rotation speed of the heat dissipation blade depends on the rotation speed of the motor shaft, and in some cases, the motor is in a state of low rotation speed and high load, and in this case, the heat dissipation requirement of the motor cannot be met due to the low rotation speed of the heat dissipation blade.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a ventilation and heat dissipation structure of a motor and a heat dissipation adjusting method thereof, so that the motor has an independent heat dissipation structure which is easy to adjust.
The technical scheme is as follows: in order to achieve the above purpose, the ventilation and heat dissipation structure of the motor comprises a machine base, a rotor, a stator and an external air duct, wherein the rotor and the stator divide the interior of the machine base into a front cavity and a rear cavity, the front cavity is provided with an air outlet, and the rear cavity is communicated with the external air duct; the external air duct is internally provided with a fan, and when the fan works, the air inlet of the external air duct enters the front cavity through the gap between the rotor and the stator and is discharged from the air outlet under the positive pressure effect.
Further, the rotor is mounted on a motor shaft; the motor shaft is a hollow shaft body, and a wind passing hole channel is formed in the motor shaft; the air inlet of the air passage is correspondingly positioned in the rear cavity, so that the air inlet of the external air passage can be split into the air passage.
Further, the air outlet end of the air passage extends to penetrate out of the machine base towards the direction of the front cavity, so that the air outlet of the air passage is communicated to the outside of the machine base.
Further, front and rear ends of the stand are respectively provided with a front end cover and a rear end cover, the front cavity is arranged between the front end cover and the rotor and the stator, and the rear cavity is arranged between the rear end cover and the rotor and the stator; the wind-passing hole passes through the machine base from the front end cover along with the motor shaft.
Further, the external air duct is arranged at the top of the rear cavity; the air outlet holes are multiple, and the air outlet holes are respectively positioned at two sides of the front cavity.
Further, ventilation screen plates are respectively arranged on two sides of the front cavity, a plurality of lower inclined plates are arranged on the ventilation screen plates at intervals, and air outlet holes for downwards and obliquely discharging air are formed between the adjacent lower inclined plates.
Further, the external air duct extends vertically, an air inlet of the external air duct is a transverse opening, and a rotating shaft of the fan is parallel to the motor shaft.
Further, an adjusting valve is arranged on the air inlet of the air passage, and the opening size of the air inlet of the air passage is correspondingly adjusted by the adjusting valve.
Further, a first temperature measuring element is arranged at the air outlet of the air passage, and a second temperature measuring element is arranged at the air outlet of the front cavity.
Further, a heat dissipation adjusting method of a ventilation heat dissipation structure of a motor comprises the following steps: the opening size of the regulating valve is related to the temperature measurement difference value of the first temperature measurement element and the second temperature measurement element; when the temperature measurement value of the first temperature measurement element is larger than that of the second temperature measurement element, the air inlet of the air passage is controlled by the regulating valve to be enlarged; when the temperature measurement value of the first temperature measurement element is smaller than that of the second temperature measurement element, the air inlet of the air passage is controlled by the adjusting valve to be smaller.
The beneficial effects are that: the ventilation and heat dissipation structure of the motor and the heat dissipation adjusting method thereof have the beneficial effects that:
1) The motor is provided with the external air duct, the fan in the external air duct can rotate independently of the motor shaft, and when the motor rotates at a low speed, the independently operated fan can better meet the heat dissipation requirement of the motor;
2) The air inlet of the external air duct axially penetrates through the gap between the rotor and the stator to dissipate heat at the outer side of the rotor; the motor shaft is internally provided with a wind-passing hole channel, and the wind inlet of the external wind channel passes through the wind-passing hole channel to dissipate heat of the inner side of the rotor; the heat dissipation is carried out from the inner side and the outer side of the rotor, so that the heat dissipation effect of the rotor is better;
3) An air inlet of the air passage is provided with an adjusting valve, an air outlet of the air passage is provided with a first temperature measuring element, and an air outlet of the front cavity is provided with a second temperature measuring element; the opening size of the regulating valve is related to the temperature measurement difference value of the first temperature measurement element and the second temperature measurement element; through changing the size of the adjusting valve, the amount in the air passage can be changed, so that the heat dissipation effect of the inner side and the outer side of the rotor is closer, and the overall heat dissipation effect of the rotor is better.
Drawings
FIG. 1 is a schematic view of the internal structure of the motor of the present invention;
fig. 2 is a front view of the motor of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The ventilating and heat-dissipating structure of a motor as shown in fig. 1 to 2 comprises a machine base 1, a rotor 2, a stator 3 and an external air duct 4. The rotor 2 is matched with the stator 3, the rotor 2 and the stator 3 are matched with each other, the interior of the machine base 1 is divided into a front cavity 5 and a rear cavity 6 by a matched structure, an air outlet 7 is arranged on the front cavity 5, and the rear cavity 6 is communicated with the external air duct 4. The external air duct 4 is internally provided with a fan 8, when the fan 8 works, air inlet of the external air duct 4 correspondingly enters the rear cavity 6, then enters the front cavity 5 through a gap between the rotor 2 and the stator 3, and is discharged out of the machine base 1 from the air outlet 7 under the positive pressure effect, so that heat dissipation of the motor is realized. Because the motor is cooled through the external air duct 4 and the independent fan 8, the independent fan 8 can keep high rotation speed when the motor is in low rotation speed and high load, so as to meet the cooling requirement of the motor.
The rotor 2 is mounted on a motor shaft 9, and the rotor 2 rotates together with the motor shaft 9. The motor shaft 9 is a hollow shaft body, a wind passing hole channel 10 is formed in the motor shaft 9, and the wind passing hole channel 10 extends along the axial direction of the motor shaft 9. The air inlet of the air passage 10 is correspondingly positioned in the rear cavity 6, so that the air inlet of the external air passage 4 can be split into the air passage 10. When the air inlet of the external air duct 4 passes through the gap between the rotor 2 and the stator 3, the outside of the rotor 2 can be radiated, and when the air inlet of the external air duct 4 passes through the air passage 10, the inside of the rotor 2 can be radiated. The invention can radiate the heat of the inner side and the outer side of the rotor 2 at the same time, so the comprehensive heat radiation effect of the rotor 2 is better.
The air outlet end of the air passage 10 extends to penetrate out of the machine base 1 towards the front cavity 5, so that the air outlet of the air passage 10 is communicated to the outside of the machine base 1. If the air outlet of the air passage 10 is located in the rear cavity 6, the air flow is inhibited from being discharged from the air outlet of the air passage 10 due to the positive pressure of the rear cavity 6, and the heat dissipation effect of the air passage 10 is reduced. Therefore, the air outlet of the air passage 10 is directly communicated to the outside, so as to increase the flow velocity in the air passage 10 and further improve the heat dissipation effect of the air passage 10.
The front end and the rear end of the machine base 1 are respectively provided with a front end cover 11 and a rear end cover 12, the front cavity 5 is arranged between the front end cover 11 and the rotor 2 and the stator 3, and the rear cavity 6 is arranged between the rear end cover 12 and the rotor 2 and the stator 3. One end of the motor shaft 9 penetrates out of the front end cover 11, and the wind through hole channel 10 penetrates out of the machine base 1 along with the motor shaft 9 from the front end cover 11; the encoder 16 is arranged outside the rear end cover 12, and the encoder 16 is used for controlling the rotating speed of the motor shaft 9 and positioning control with high precision.
The external air duct 4 is arranged at the top of the rear cavity 6. The air outlet holes 7 are multiple, and the air outlet holes 7 are respectively positioned at two sides of the front cavity 5, so that the air flow is more uniform when the external air duct 4 axially passes through the inside of the machine base 1.
The two sides of the front cavity 5 are respectively provided with a ventilation screen 13, the ventilation screen 13 is provided with a plurality of lower inclined plates which are spaced apart, the air outlet holes 7 for downwards air outlet in an inclined way are formed between the adjacent lower inclined plates, and when the motor does not work, the downwards inclined air outlet holes 7 are not easy to enter dust.
The external air duct 4 vertically extends, the air inlet 15 of the external air duct 4 is arranged at the upper end of the external air duct 4, the air inlet 15 of the external air duct is a transverse opening, a filter screen is arranged in the air inlet 15, and when the fan 8 works, the filter screen can filter dust. The rotation axis of the fan 8 is parallel to the motor shaft 9.
An air inlet of the air passage 10 is provided with an adjusting valve 14, and the adjusting valve 14 correspondingly adjusts the opening size of the air inlet of the air passage 10, so as to adjust the air flow entering the air passage 10.
The air outlet of the air passage 10 is provided with a first temperature measuring element, and the first temperature measuring element can measure the temperature of the air flow discharged from the air outlet of the air passage 10, so as to reflect the heat dissipation condition of the outer side of the rotor 2. The air outlet 7 of the front cavity 5 is provided with a second temperature measuring element, and the second temperature measuring element can measure the temperature of the air flow discharged from the air outlet 7, so as to reflect the heat dissipation condition of the inner side of the rotor 2.
A heat dissipation adjusting method of a ventilation heat dissipation structure of a motor comprises the following steps: the opening size of the regulating valve 14 is related to the temperature measurement difference between the first temperature measurement element and the second temperature measurement element. When the temperature measurement value of the first temperature measurement element is greater than that of the second temperature measurement element, it indicates that the heat dissipation effect inside the rotor 2 is poor, and at this time, the air inlet of the air passage 10 is controlled by the adjusting valve 14 to be enlarged, so that the air flow entering the air passage 10 is increased, and the temperature inside the rotor 2 is reduced. When the temperature measurement value of the first temperature measurement element is smaller than that of the second temperature measurement element, it indicates that the heat dissipation effect on the outer side of the rotor 2 is poor, and at this time, the air inlet of the air passage 10 is controlled by the adjusting valve 14 to be smaller, so that the air flow entering the air passage 10 is reduced, and accordingly, the air flow passing through the gap between the rotor 2 and the stator 3 is increased, so that the heat dissipation effect on the outer side of the rotor 2 is improved. Through the heat dissipation adjusting mode, the temperature of the inner side and the outer side of the rotor 2 can be kept similar, and the overall heat dissipation effect of the rotor 2 is better.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (10)
1. A ventilation and heat dissipation structure of a motor is characterized in that: the air conditioner comprises a machine base (1), a rotor (2), a stator (3) and an external air duct (4), wherein the rotor (2) and the stator (3) divide the interior of the machine base (1) into a front cavity (5) and a rear cavity (6), an air outlet hole (7) is formed in the front cavity (5), and the rear cavity (6) is communicated with the external air duct (4); a fan (8) is arranged in the external air duct (4), and when the fan (8) works, air inlet of the external air duct (4) enters the front cavity (5) through a gap between the rotor (2) and the stator (3) and is discharged from the air outlet (7) under the positive pressure effect.
2. The ventilation and heat dissipation structure of a motor according to claim 1, wherein: the rotor (2) is arranged on a motor shaft (9); the motor shaft (9) is a hollow shaft body, and a wind passing hole channel (10) is formed in the motor shaft; the air inlet of the air passage (10) is correspondingly positioned in the rear cavity (6), so that the air inlet of the external air passage (4) can be split into the air passage (10).
3. A ventilating and heat dissipating structure of an electric motor as set forth in claim 2, wherein: the air outlet end of the air passage (10) extends to penetrate out of the machine base (1) towards the front cavity (5), so that the air outlet of the air passage (10) is communicated to the outside of the machine base (1).
4. A ventilating and heat dissipating structure of an electric motor according to claim 3, wherein: the front end and the rear end of the machine base (1) are respectively provided with a front end cover (11) and a rear end cover (12), the front cavity (5) is arranged between the front end cover (11) and the rotor (2) and the stator (3), and the rear cavity (6) is arranged between the rear end cover (12) and the rotor (2) and the stator (3); the wind passage (10) passes through the machine base (1) along with the motor shaft (9) from the front end cover (11).
5. A ventilating and heat dissipating structure of an electric motor according to claim 3, wherein: the external air duct (4) is arranged at the top of the rear cavity (6); the air outlet holes (7) are multiple, and the air outlet holes (7) are respectively positioned at two sides of the front cavity (5).
6. The ventilation and heat dissipation structure of a motor according to claim 5, wherein: the two sides of the front cavity (5) are respectively provided with a ventilation screen (13), the ventilation screen (13) is provided with a plurality of lower inclined plates which are separated at intervals, and air outlet holes (7) for downwards and obliquely discharging air are formed between the adjacent lower inclined plates.
7. The ventilation and heat dissipation structure of a motor according to claim 5, wherein: the external air duct (4) extends vertically, an air inlet (15) of the external air duct (4) is a transverse opening, and a rotating shaft of the fan (8) is parallel to the motor shaft (9).
8. A ventilating and heat dissipating structure of an electric machine according to any of claims 3 to 7, wherein: an adjusting valve (14) is arranged on the air inlet of the air passage (10), and the adjusting valve (14) correspondingly adjusts the opening size of the air inlet of the air passage (10).
9. The ventilating and heat dissipating structure of the motor as set forth in claim 8, wherein: the air outlet of the air passage (10) is provided with a first temperature measuring element, and the air outlet (7) of the front cavity (5) is provided with a second temperature measuring element.
10. The heat radiation adjustment method of a ventilation heat radiation structure of a motor according to claim 9, characterized in that: the opening size of the regulating valve (14) is related to the temperature measurement difference value of the first temperature measurement element and the second temperature measurement element; when the temperature measurement value of the first temperature measurement element is larger than that of the second temperature measurement element, the air inlet of the air passing hole channel (10) is controlled to be enlarged by the adjusting valve (14); when the temperature measurement value of the first temperature measurement element is smaller than that of the second temperature measurement element, the air inlet of the air passing hole channel (10) is controlled to be smaller by the adjusting valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310949639.3A CN116979742A (en) | 2023-07-31 | 2023-07-31 | Ventilating and heat-dissipating structure of motor and heat-dissipating adjusting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310949639.3A CN116979742A (en) | 2023-07-31 | 2023-07-31 | Ventilating and heat-dissipating structure of motor and heat-dissipating adjusting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116979742A true CN116979742A (en) | 2023-10-31 |
Family
ID=88481047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310949639.3A Pending CN116979742A (en) | 2023-07-31 | 2023-07-31 | Ventilating and heat-dissipating structure of motor and heat-dissipating adjusting method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116979742A (en) |
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2023
- 2023-07-31 CN CN202310949639.3A patent/CN116979742A/en active Pending
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