CN115441639A - Air-cooled permanent magnet motor based on heat dissipation copper pipe - Google Patents
Air-cooled permanent magnet motor based on heat dissipation copper pipe Download PDFInfo
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- CN115441639A CN115441639A CN202211041959.0A CN202211041959A CN115441639A CN 115441639 A CN115441639 A CN 115441639A CN 202211041959 A CN202211041959 A CN 202211041959A CN 115441639 A CN115441639 A CN 115441639A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
- H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/225—Heat pipes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses an air-cooled permanent magnet motor based on a heat dissipation copper pipe, and aims to provide an air-cooled permanent magnet motor based on a heat dissipation copper pipe, which can effectively improve the heat dissipation efficiency of a permanent magnet motor and effectively prevent the problems of demagnetization of a permanent magnet, reduction of the motor efficiency, shortened service life and serious influence on the use performance of the motor due to epoxy expansion cracking caused by overhigh temperature rise of the motor. The motor comprises a motor shell, a fan, a stator, a heat dissipation air channel and a heat dissipation copper pipe assembly, wherein the stator, the heat dissipation air channel and the heat dissipation copper pipe assembly are positioned in the motor shell, an air outlet is formed in the rear end of the motor shell, the heat dissipation air channel comprises a plurality of annular air channels arranged on the outer peripheral surface of the stator and stator diversion air channels arranged on the outer peripheral surface of the stator, the fan blows towards the outer peripheral surface of the stator, and air blown into the motor shell by the fan is discharged through the air outlet; the radiating copper pipe assembly comprises a radiating copper pipe network and a plurality of radiating copper pipes connected with the radiating copper pipe network, the radiating copper pipes are inserted into the yoke part of the stator, and the radiating copper pipe network is close to the air outlet.
Description
Technical Field
The invention relates to the technical field of heat dissipation of permanent magnet motors, in particular to an air-cooled permanent magnet motor based on a heat dissipation copper pipe.
Background
With the continuous improvement of the performance of the permanent magnet motor and the continuous increase of the power density, the permanent magnet motor has the problems that the loss of a winding is large when the permanent magnet motor is operated, the heating amount of the motor is obviously increased, the temperature rise of the motor is obvious, and the service performance of the motor is seriously influenced by demagnetization of a permanent magnet, reduction of the efficiency of the motor, shortening of the service life, epoxy expansion cracking and the like. The heat dissipation of the existing permanent magnet motor generally adopts an air cooling mode for heat dissipation, but the heat dissipation efficiency of the traditional air cooling heat dissipation is poor, and the existing permanent magnet motor rate dissipation requirement is difficult to adapt. In view of the above, how to develop a permanent magnet motor with a high-efficiency heat dissipation structure becomes a problem to be solved.
Disclosure of Invention
The invention aims to provide an air-cooled permanent magnet motor based on a heat dissipation copper pipe, which can effectively improve the heat dissipation efficiency of the permanent magnet motor and effectively prevent the problems of demagnetization of a permanent magnet, reduction of the motor efficiency, shortened service life and severe influence of epoxy expansion cracking on the use performance of the motor caused by overhigh temperature rise of the motor.
The technical scheme of the invention is as follows:
an air-cooled permanent magnet motor based on a heat dissipation copper pipe comprises a motor shell, a fan, a stator, a heat dissipation air channel and a heat dissipation copper pipe assembly, wherein the stator, the heat dissipation air channel and the heat dissipation copper pipe assembly are positioned in the motor shell, an air outlet is formed in the rear end of the motor shell, the heat dissipation air channel comprises a plurality of annular air channels arranged on the outer peripheral surface of the stator and stator guide air channels arranged on the outer peripheral surface of the stator, the stator guide air channels extend and are distributed along the front and rear directions of the motor shell, the stator guide air channels are communicated with the annular air channels, the stator guide air channels are communicated with the air outlet, the fan blows towards the outer peripheral surface of the stator, and air blown into the motor shell by the fan is discharged through the air outlet; the heat dissipation copper pipe assembly comprises a heat dissipation copper pipe network and a plurality of heat dissipation copper pipes connected with the heat dissipation copper pipe network, the heat dissipation copper pipes are inserted into the yoke portion of the stator and used for absorbing heat generated by the stator, and the heat dissipation copper pipe network is close to the air outlet.
The air-cooled permanent magnet motor based on the heat dissipation copper pipe fully utilizes the characteristic of high heat conductivity coefficient of the heat dissipation copper pipe, and efficiently transmits heat generated by a stator to a heat dissipation copper pipe network outside the stator through the heat dissipation copper pipe inserted into a yoke part of the stator (the heat dissipation copper pipe is close to a winding); meanwhile, because the heat dissipation copper pipe network is close to the air outlet, the forced convection heat dissipation is carried out on the heat dissipation copper pipe network absorbing a large amount of heat in the process that the air blown into the motor shell by the fan is exhausted through the air outlet, and therefore the heat dissipation efficiency of the permanent magnet motor is effectively improved. More importantly, the fan blows towards the outer peripheral surface of the stator, the outer peripheral surface of the stator is provided with a stator guide air channel and a plurality of annular air channels, the stator guide air channels extend and are distributed along the front and back directions of the motor shell, the stator guide air channels are communicated with the annular air channels, and the stator guide air channels are communicated with the air outlet; therefore, the air flow generated by blowing the fan towards the peripheral surface of the stator flows along the annular air duct to perform efficient air cooling on the peripheral surface of the stator; then, the airflow is guided to the rear end of the motor shell through the stator guide air duct and is discharged through the air outlet after flowing through the heat dissipation copper pipe network, so that the heat dissipation copper pipe network is cooled by air again; that is to say, this scheme is successively carried out the forced air cooling to the stator outer peripheral face through the air current that same fan produced, then is carrying out the forced air cooling to heat dissipation copper pipe network, has realized the secondary high-efficient forced air cooling to stator inside and outside part to effectively improve the high forced air cooling radiating efficiency of fan, further improvement effectively improves permanent-magnet machine's radiating efficiency, effectively prevents the problem that permanent magnet demagnetization, motor efficiency decline, life-span shorten, epoxy expansion fracture seriously influence motor service performance because of motor temperature rise is too high to appear. On the other hand, because the heat dissipation copper pipe network is a otter board, can be convenient arrange between stator and rear end cover, the space that occupies is very little, can hardly increase permanent-magnet machine's volume.
Preferably, the stator core of the stator comprises a plurality of first stator laminations and second stator laminations which are sequentially and alternately arranged, and the outer diameter of each first stator lamination is larger than that of each second stator lamination, so that an annular groove with an opening facing the outer side of the stator core is formed between any two first stator laminations which are adjacently distributed, and the annular groove forms the annular air duct. So, can be after stator core shaping, directly form a plurality of annular wind channels on the outer peripheral face of stator, and will form an annular wind channel between arbitrary two first stator laminations that adjacent distribute, so, not only saved the machining procedure in annular wind channel, can form intensive, evenly distributed's annular wind channel in addition on the outer peripheral face of stator, further increased heat radiating area, when the fan blows towards the stator periphery, make the air current directly dispel the heat to the stator, further improvement heat exchange efficiency.
Preferably, the front end and the rear end of the stator are both encapsulated by epoxy, encapsulating epoxy parts are formed at the front end and the rear end of the stator, an epoxy part guide air duct is arranged on the encapsulating epoxy part at the rear end of the stator, and the stator guide air duct is communicated with the air outlet through the epoxy part guide air duct. So, the embedment epoxy portion at stator both ends comes the separation air around through, and simultaneously, the fan is bloied towards the stator outer peripheral face and is produced the air current will be through stator water conservancy diversion wind channel and epoxy portion water conservancy diversion wind channel drainage to motor housing rear end, and the heat dissipation copper pipe network of flowing through is followed the air outlet and is discharged, does not influence the air current circulation.
Preferably, the epoxy part guide air duct extends along the axial direction of the stator and penetrates through the potting epoxy part at the rear end of the stator. So be favorable to the air current to pass through epoxy portion water conservancy diversion wind channel drainage to motor housing rear end.
Preferably, a front end cover is arranged at the front end of the motor shell, a rear end cover is arranged at the rear end of the motor shell, stator pipe holes in one-to-one correspondence with the heat dissipation copper pipes are formed in the stator yoke portion, end cover pipe holes in one-to-one correspondence with the stator pipe holes are formed in the front end cover, the heat dissipation copper pipes penetrate through encapsulation epoxy portions at the front end and the rear end of the stator, and the heat dissipation copper pipes are embedded in the corresponding stator pipe holes and the corresponding end cover pipe holes. So, heat dissipation copper pipe can absorb the heat in front end housing, stator and the embedment epoxy portion simultaneously and transmit the heat dissipation copper pipe network, then through carrying out forced convection to the heat dissipation copper pipe network, comes effectual front end housing, stator and embedment epoxy portion to dispel the heat.
Preferably, the outer circumferential surface of the stator is further provided with a notch, an air guide cavity is formed between the notch and the inner wall of the motor shell, the fan blows air towards the outer circumferential surface of the stator through the air guide cavity, and the annular air duct is communicated with the air guide cavity. So, be favorable to the fan to blow in motor housing with external air current through the wind-guiding chamber in to improve the air current flow efficiency in the motor housing.
Preferably, an epoxy exhaust duct is arranged on the potting epoxy part at the rear end of the stator and communicated with the air guide cavity and the air outlet. So, be favorable to the air current between the embedment epoxy portion at stator front and back both ends to discharge the rear portion to motor housing through epoxy portion exhaust duct to discharge by the air outlet.
Preferably, the rear end of the motor housing is provided with a rear end cover, the air outlet is formed in the rear end cover, an air exhaust cavity is formed between the stator and the rear end cover, the heat dissipation copper pipe network is located in the air exhaust cavity, and the fan blows towards the peripheral surface of the stator and is exhausted through the air exhaust cavity and the air outlet. Therefore, the cooling copper pipe is protected, and forced convection cooling of the cooling copper pipe network is not affected. Meanwhile, the heat dissipation copper pipe network is a screen plate, can be conveniently arranged in the air exhaust cavity, occupies small space and hardly increases the volume of the permanent magnet motor.
Preferably, the heat dissipation copper pipe network is close to the rear end cover, and the heat dissipation copper pipe network is fixed on the rear end cover through the locking piece. Therefore, forced convection heat dissipation of the heat dissipation copper pipe network is facilitated through airflow discharged from the air outlet.
Preferably, the front end of the motor shell is provided with a front end cover, the rear end of the motor shell is provided with a rear end cover, the stator yoke is provided with stator tube holes corresponding to the heat dissipation copper tubes one to one, the front end cover is provided with end cover tube holes corresponding to the stator tube holes one to one, and the heat dissipation copper tubes are embedded in the corresponding stator tube holes and the corresponding end cover tube holes. So, the heat dissipation copper pipe can absorb front end housing and stator heat simultaneously and transmit to the heat dissipation copper pipe net, then through carrying out forced convection to the heat dissipation copper pipe net, comes effectual front end housing and stator to dispel the heat.
The invention has the beneficial effects that:
firstly, the characteristic of high heat conductivity of a heat dissipation copper pipe is fully utilized, and the heat generated by the stator is efficiently transferred to a heat dissipation copper pipe network outside the stator through the heat dissipation copper pipe inserted into a yoke part of the stator (the heat dissipation copper pipe is close to a winding); meanwhile, because the heat dissipation copper pipe network is close to the air outlet, the forced convection heat dissipation is carried out on the heat dissipation copper pipe network absorbing a large amount of heat in the process that the air blown into the motor shell by the fan is discharged through the air outlet, and therefore the heat dissipation efficiency of the permanent magnet motor is effectively improved.
Secondly, air flow generated by blowing air towards the outer peripheral surface of the stator by the fan flows along the annular air duct, and efficient air cooling is carried out on the outer peripheral surface of the stator; then, the airflow is guided to the rear end of the motor shell through the stator guide air duct and is discharged through the air outlet after flowing through the heat dissipation copper pipe network, so that the heat dissipation copper pipe network is cooled by air again; according to the scheme, air flow generated by the same fan is used for air cooling the outer peripheral surface of the stator successively, then air cooling is performed on the heat dissipation copper pipe network, secondary high-efficiency air cooling of the inner part and the outer part of the stator is achieved, accordingly, high air cooling heat dissipation efficiency of the fan is effectively improved, heat dissipation efficiency of the permanent magnet motor is further improved effectively, and the problems that permanent magnets are demagnetized due to overhigh temperature rise of the motor, the motor efficiency is reduced, the service life is shortened, and the service performance of the motor is seriously affected by epoxy expansion cracking are effectively prevented.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of an air-cooled permanent magnet motor based on a heat dissipation copper pipe.
Fig. 2 is a schematic diagram of a three-dimensional structure of the air-cooled permanent magnet motor based on the heat dissipation copper pipe after the motor casing is removed.
Fig. 3 is a schematic three-dimensional structure diagram of the stator of the air-cooled permanent magnet motor based on the heat dissipation copper pipe.
Fig. 4 is a schematic three-dimensional structure diagram of a heat dissipation copper pipe assembly of the air-cooled permanent magnet motor based on the heat dissipation copper pipe.
In the figure:
the motor comprises a motor shell 1, a front end cover 1.1 and a rear end cover 1.2;
a fan 2;
an air outlet 3;
the stator 4, the first stator lamination 4.0 and the stator pipe hole 4.1;
a heat dissipation copper pipe component 5, a heat dissipation copper pipe network 5.1 and a heat dissipation copper pipe 5.2;
a potting epoxy part 6;
a heat dissipation air channel 7, an annular air channel 7.1 and a stator diversion air channel 7.2;
an epoxy part guide air duct 8;
a notch 9;
epoxy exhaust duct 10.
Detailed Description
The invention is described in further detail below with reference to the following figures and embodiments:
the first embodiment is as follows: as shown in fig. 1, 2, 3, and 4, an air-cooled permanent magnet motor based on a heat dissipation copper pipe includes a motor housing 1, a fan 2, a stator 4 located in the motor housing, a heat dissipation air duct 7, and a heat dissipation copper pipe assembly 5. The front end of the motor shell is provided with a front end cover 1.1, and the rear end of the motor shell is provided with a rear end cover 1.2. The rear end of the motor housing is provided with an air outlet 3, which is arranged on the rear end cover in this embodiment.
The heat dissipation air duct 7 comprises a plurality of annular air ducts 7.1 arranged on the peripheral surface of the stator core and stator guide air ducts 7.2 arranged on the peripheral surface of the stator. The annular air ducts are distributed along the axial direction of the stator in sequence. The number of the stator guide air channels is one or more, in the embodiment, the number of the stator guide air channels is multiple, and the stator guide air channels are distributed in sequence along the circumferential direction of the stator. The stator guide air channel extends and distributes along the front and back direction of the motor shell, and in the embodiment, the stator guide air channel extends along the axial direction of the stator and penetrates through the front end and the back end of the stator. The stator diversion air duct is communicated with the annular air ducts, and the stator diversion air duct is communicated with the air outlet. The fan blows towards the outer peripheral surface of the stator, specifically, the fan is fixed on the outer side wall of the motor shell, an air inlet is formed in the side wall of the motor shell, and the fan blows towards the outer peripheral surface of the stator through the air inlet. The air blown into the motor shell by the fan is discharged through the air outlet. The number of the fans is one or two, in the embodiment, the number of the fans is two, the two fans are distributed on two opposite sides of the motor shell, the number of the air inlets on the side wall of the motor shell is two, and the fans correspond to the air inlets one by one.
The heat dissipation copper pipe assembly 5 comprises a heat dissipation copper pipe network 5.1 and a plurality of heat dissipation copper pipes 5.2 connected with the heat dissipation copper pipe network. The heat dissipation copper pipe is inserted into a yoke part of the stator (namely the yoke part of the stator core) and is used for absorbing heat generated by the stator. The heat dissipation copper pipe network is close to the air outlet. The heat dissipation copper pipe network is located inside the motor housing or outside the motor housing.
The air-cooled permanent magnet motor based on the heat dissipation copper pipe fully utilizes the characteristic of high heat conductivity coefficient of the heat dissipation copper pipe, and efficiently transfers heat generated by the stator to the heat dissipation copper pipe network outside the stator through the heat dissipation copper pipe (the heat dissipation copper pipe is close to the winding) inserted into the yoke part of the stator; meanwhile, because the heat dissipation copper pipe network is close to the air outlet, the forced convection heat dissipation is carried out on the heat dissipation copper pipe network absorbing a large amount of heat in the process that the air blown into the motor shell by the fan is exhausted through the air outlet, and therefore the heat dissipation efficiency of the permanent magnet motor is effectively improved. More importantly, the fan blows towards the peripheral surface of the stator, the peripheral surface of the stator is provided with a stator guide air channel and a plurality of annular air channels, the stator guide air channels extend and are distributed along the front and back directions of the motor shell, the stator guide air channels are communicated with the annular air channels, and the stator guide air channels are communicated with the air outlet; therefore, the air flow generated by blowing the fan towards the peripheral surface of the stator flows along the annular air duct to perform efficient air cooling on the peripheral surface of the stator; then, the airflow is guided to the rear end of the motor shell through the stator guide air duct and is discharged through the air outlet after flowing through the heat dissipation copper pipe network, so that the heat dissipation copper pipe network is subjected to air cooling heat dissipation again; that is to say, this scheme is successively carried out the forced air cooling to the stator outer peripheral face through the air current that same fan produced, then is carrying out the forced air cooling to the copper pipe network that dispels the heat, has realized the high-efficient forced air cooling to the stator inside and outside part to effectively improve the high forced air cooling radiating efficiency of fan, further improvement effectively improves permanent magnet machine's radiating efficiency, effectively prevents the permanent magnet demagnetization that appears because of motor temperature rise is too high, motor efficiency descends, the life-span shortens, the epoxy expansion fracture seriously influences the problem of motor service performance. On the other hand, because the heat dissipation copper pipe network is a otter board, can be convenient arrange between stator and rear end cover, the space that occupies is very little, can hardly increase permanent-magnet machine's volume.
Specifically, as shown in fig. 1 and 2, epoxy potting is used for both the front and rear ends of the stator, and potting epoxy portions 6 are formed at both the front and rear ends of the stator. An exhaust cavity is formed between the stator and the rear end cover, and particularly, the exhaust cavity is formed between a potting epoxy part at the rear end of the stator and the rear end cover. The fan blows towards the peripheral surface of the stator and is discharged from the air outlet through the air discharging cavity.
The heat dissipation copper pipe network 5.1 is positioned in the air exhaust cavity. The heat dissipation copper pipe network is a layer or a plurality of layers of heat dissipation copper pipe networks, and the plurality of layers of heat dissipation copper pipe networks are distributed in sequence along the axial direction of the stator. In this embodiment, the heat dissipation copper pipe network is a layer, and the heat dissipation copper pipe network is axially perpendicular to the stator. The heat dissipation copper pipe network is arranged in the air exhaust cavity, so that the heat dissipation copper pipe is protected, and forced convection heat dissipation of the heat dissipation copper pipe network is not influenced. Meanwhile, the heat dissipation copper pipe network is a screen plate, can be conveniently arranged in the air exhaust cavity, occupies small space and hardly increases the volume of the permanent magnet motor.
The heat dissipation copper pipe network is close to the rear end cover and is fixed on the rear end cover through the locking piece. Therefore, forced convection heat dissipation is performed on the heat dissipation copper pipe network by airflow discharged from the air outlet.
As shown in fig. 1 and 2, an epoxy part air guide duct 8 is provided on the potting epoxy part at the rear end of the stator. The epoxy part guide air channels are one or more, in the embodiment, the epoxy part guide air channels are multiple, and the epoxy part guide air channels correspond to the stator guide air channels one to one. The epoxy part diversion air duct extends along the axial direction of the stator and penetrates through the encapsulation epoxy part at the rear end of the stator. The front end of the epoxy part guide air channel is communicated with the rear end of the corresponding stator guide air channel, and the rear end of the epoxy part guide air channel is communicated with the exhaust cavity, so that the stator guide air channel is communicated with the air outlet through the corresponding epoxy part guide air channel. The fan blows air formed by air in the motor shell towards the outer peripheral surface of the stator, the air flows along the annular air duct, then flows into the air exhaust cavity through the stator guide air duct and the epoxy part guide air duct, and is exhausted through the air outlet.
As shown in fig. 1, 2 and 3, the outer peripheral surface of the stator is further provided with a notch 9, and an air guiding cavity is formed between the notch and the inner wall of the motor shell. The side wall where the cutout is located extends in the axial direction of the stator. The fan blows towards the peripheral surface of the stator through the air guide cavity. The annular air duct is communicated with the air guide cavity. So, be favorable to the fan to blow in motor housing with external air current through the wind-guiding chamber in to improve the air current flow efficiency in the motor housing. In this embodiment, the number of the notches is two, the two notches are distributed on two opposite sides of the stator, and the number of the air guide cavities formed between the notches and the inner wall of the motor shell is also two correspondingly. The air guide cavities correspond to the fans one by one.
An epoxy exhaust duct 10 is arranged on the encapsulation epoxy part at the rear end of the stator and communicated with the air guide cavity and the air outlet. So, be favorable to the air current between the embedment epoxy portion at stator front and back both ends to discharge the chamber of airing exhaust through epoxy portion exhaust duct to discharge through the air outlet.
As shown in fig. 1, 2 and 3, the stator yoke is provided with stator tube holes 4.1 corresponding to the heat dissipation copper tubes one to one. The front end cover is provided with end cover pipe holes which are in one-to-one correspondence with the stator pipe holes. In this embodiment, the heat dissipation copper pipe extends along the stator axial direction, and correspondingly, the stator pipe hole and the end cover pipe hole both extend along the stator axial direction. All the heat dissipation copper pipes are evenly distributed along the circumferential direction of the stator. The heat dissipation copper pipe passes through the encapsulating epoxy parts at the front end and the rear end of the stator, and is embedded in the corresponding stator pipe hole and the end cover pipe hole. The front end and the rear end of the stator are both encapsulated by epoxy, one of the heat dissipation copper pipes is encapsulated in the encapsulating epoxy parts at the front end and the rear end of the stator, and heat dissipation is enhanced by isolating air. So, the heat dissipation copper pipe can absorb the heat in front end housing, stator and the embedment epoxy portion simultaneously and transmit the heat dissipation copper pipe net, then through carrying out forced convection to the heat dissipation copper pipe net, comes effectual front end housing, stator and embedment epoxy portion to dispel the heat.
The heat dissipation copper pipe is in interference fit with the pipe hole of the stator, and the heat dissipation copper pipe is in interference fit with the pipe hole of the end cover; for example, if the diameters of the stator pipe hole and the end cover pipe hole are both 4.8mm, the diameter of the heat dissipation copper pipe is 5mm, and thus the heat dissipation copper pipe is in full contact with the stator pipe hole and the end cover pipe hole to transfer heat better. Certainly, in consideration of the influence of the actual processing technology, in order to further ensure that the heat dissipation copper pipe is tightly attached to the inner walls of the stator pipe hole and the end cover pipe hole, before the heat dissipation copper pipe is inserted into the stator pipe hole and the end cover pipe hole, heat conduction glue with high heat conductivity coefficient is coated on the outer wall of the heat dissipation copper pipe, so that heat can be better transferred between the heat dissipation copper pipe and the stator pipe hole as well as between the heat dissipation copper pipe and the end cover pipe hole.
As shown in fig. 2 and 3, the stator core of the stator 4 includes a plurality of first stator laminations 4.0 and second stator laminations which are alternately arranged in sequence. The outer diameter of the first stator lamination is larger than that of the second stator lamination, so that an annular groove with an opening facing the outer side of the stator core is formed between any two adjacent first stator laminations, and the annular groove forms the annular air duct. So, can be after stator core shaping, directly form a plurality of annular wind channels on the outer peripheral face of stator, and will form an annular wind channel between arbitrary two first stator laminations that adjacent distribute, so, not only saved the machining procedure in annular wind channel, can form intensive, evenly distributed's annular wind channel in addition on the outer peripheral face of stator, further increased heat radiating area, when the fan blows towards the stator periphery, make the air current directly dispel the heat to the stator, further improvement heat exchange efficiency.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides an air-cooled permanent magnet motor based on heat dissipation copper pipe, includes motor housing, fan and is located the stator of motor housing, motor housing's rear end is equipped with the air outlet, and characterized by still includes:
the heat dissipation air channel comprises a plurality of annular air channels arranged on the outer peripheral surface of the stator and stator guide air channels arranged on the outer peripheral surface of the stator, the stator guide air channels extend and are distributed along the front and back directions of the motor shell, the stator guide air channels are communicated with the annular air channels, the stator guide air channels are communicated with the air outlet, the fan blows towards the outer peripheral surface of the stator, and the air blown into the motor shell by the fan is discharged through the air outlet;
the heat dissipation copper pipe assembly comprises a heat dissipation copper pipe network and a plurality of heat dissipation copper pipes connected with the heat dissipation copper pipe network, wherein the heat dissipation copper pipes are inserted into the yoke portion of the stator and used for absorbing heat generated by the stator, and the heat dissipation copper pipe network is close to the air outlet.
2. The copper tube-based air-cooled permanent magnet motor according to claim 1, wherein the stator core of the stator comprises a plurality of first stator laminations and second stator laminations which are alternately arranged in sequence, and the outer diameter of each first stator lamination is larger than that of each second stator lamination, so that an annular groove with an opening facing the outer side of the stator core is formed between any two first stator laminations which are adjacently distributed, and the annular groove forms the annular air duct.
3. The air-cooled permanent magnet motor based on the heat dissipation copper pipe as recited in claim 1, wherein the front and rear ends of the stator are encapsulated by epoxy, and encapsulating epoxy portions are formed at the front and rear ends of the stator, and an epoxy portion diversion air duct is provided on the encapsulating epoxy portion at the rear end of the stator, and the stator diversion air duct is communicated with the air outlet through the epoxy portion diversion air duct.
4. The copper tube based air-cooled permanent magnet motor according to claim 3, wherein the epoxy portion guiding air duct extends along the axial direction of the stator and penetrates through the potting epoxy portion at the rear end of the stator.
5. The air-cooled permanent magnet motor based on heat dissipation copper pipes as claimed in claim 1, 2, 3 or 4, wherein a front end cover is arranged at the front end of the motor housing, a rear end cover is arranged at the rear end of the motor housing, the stator yoke portion is provided with stator pipe holes corresponding to the heat dissipation copper pipes one by one, end cover pipe holes corresponding to the stator pipe holes one by one are arranged on the front end cover, the heat dissipation copper pipes penetrate through the encapsulation epoxy portions at the front end and the rear end of the stator, and the heat dissipation copper pipes are embedded in the corresponding stator pipe holes and the corresponding end cover pipe holes.
6. The air-cooled permanent magnet motor based on the heat dissipation copper pipe as claimed in claim 1, 2, 3 or 4, wherein a notch is further formed in the outer peripheral surface of the stator, an air guide cavity is formed between the notch and the inner wall of the motor shell, the fan blows air towards the outer peripheral surface of the stator through the air guide cavity, and the annular air duct is communicated with the air guide cavity.
7. The air-cooled permanent magnet motor based on a heat dissipation copper pipe as recited in claim 6, wherein an epoxy exhaust duct is disposed on the potting epoxy at the rear end of the stator, and the epoxy exhaust duct communicates the air guiding cavity with the air outlet.
8. The air-cooled permanent magnet motor based on the heat dissipation copper pipe as claimed in claim 1, 2, 3 or 4, wherein the rear end of the motor housing is provided with a rear end cover, the air outlet is arranged on the rear end cover, an air exhaust cavity is formed between the stator and the rear end cover, the heat dissipation copper pipe network is located in the air exhaust cavity, and the fan blows towards the outer peripheral surface of the stator and is exhausted through the air exhaust cavity and the air outlet.
9. The air-cooled permanent magnet motor based on the heat dissipation copper pipe as recited in claim 8, wherein the heat dissipation copper pipe network is close to the rear end cover, and the heat dissipation copper pipe network is fixed on the rear end cover through a locking piece.
10. The air-cooled permanent magnet motor based on the heat dissipation copper pipes as claimed in claim 1, 2, 3 or 4, wherein a front end cover is arranged at the front end of the motor housing, a rear end cover is arranged at the rear end of the motor housing, the stator yoke portion is provided with stator pipe holes corresponding to the heat dissipation copper pipes one to one, end cover pipe holes corresponding to the stator pipe holes one to one are arranged on the front end cover, and the heat dissipation copper pipes are embedded in the corresponding stator pipe holes and the end cover pipe holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211041959.0A CN115441639A (en) | 2022-08-29 | 2022-08-29 | Air-cooled permanent magnet motor based on heat dissipation copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211041959.0A CN115441639A (en) | 2022-08-29 | 2022-08-29 | Air-cooled permanent magnet motor based on heat dissipation copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115441639A true CN115441639A (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211041959.0A Pending CN115441639A (en) | 2022-08-29 | 2022-08-29 | Air-cooled permanent magnet motor based on heat dissipation copper pipe |
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| CN (1) | CN115441639A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116169831A (en) * | 2023-04-26 | 2023-05-26 | 山东高原油气装备有限公司 | Industrial permanent magnet motor |
| CN116470690A (en) * | 2023-04-17 | 2023-07-21 | 徐州美邦电动车科技有限公司 | Two-stage internal air-cooled motor structure |
-
2022
- 2022-08-29 CN CN202211041959.0A patent/CN115441639A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116470690A (en) * | 2023-04-17 | 2023-07-21 | 徐州美邦电动车科技有限公司 | Two-stage internal air-cooled motor structure |
| CN116470690B (en) * | 2023-04-17 | 2023-10-27 | 徐州美邦电动车科技有限公司 | Two-stage internal air-cooled motor structure |
| CN116169831A (en) * | 2023-04-26 | 2023-05-26 | 山东高原油气装备有限公司 | Industrial permanent magnet motor |
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