CN114448118A - Heat dissipation mechanism of outer rotor roller motor stator - Google Patents
Heat dissipation mechanism of outer rotor roller motor stator Download PDFInfo
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- CN114448118A CN114448118A CN202210306947.XA CN202210306947A CN114448118A CN 114448118 A CN114448118 A CN 114448118A CN 202210306947 A CN202210306947 A CN 202210306947A CN 114448118 A CN114448118 A CN 114448118A
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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
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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
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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Abstract
The invention provides a heat dissipation mechanism of an outer rotor roller motor stator, which comprises a motor main shaft, a stator fixedly arranged on the motor main shaft and comprising a stator core, and a liquid cooling heat dissipation pipeline for heat dissipation, wherein the motor main shaft is provided with a liquid inlet channel and a liquid outlet channel, the stator core is provided with a plurality of axially through heat dissipation pipe mounting holes along the circumferential direction at the inner side of a winding mounting groove of the stator core, and the liquid cooling heat dissipation pipeline comprises a flow division pipe and a confluence pipe which are correspondingly connected with the liquid inlet/outlet channel of the motor main shaft in a liquid through manner, perforated straight pipes fixedly arranged in the heat dissipation pipe mounting holes, a liquid inlet/outlet connecting elbow for connecting the flow division pipe and the confluence pipe with the perforated straight pipes, and an inter-pipe connecting elbow for cascading between the perforated straight pipes. The invention has simple structure, convenient installation, lower cost and good heat dissipation effect, and compared with the similar motor with the same power, the motor adopting the invention has basically unchanged external dimension, and the heat dissipation mechanism of the invention has little influence on the efficiency of the motor adopting the invention when in work.
Description
Technical Field
The invention relates to the technical field of stators of outer rotor motors, in particular to a heat dissipation mechanism of an outer rotor roller motor stator.
Background
The external rotor drum motor generally includes a motor shaft, a stator, an external rotor including a drum, and other necessary components. The heat dissipation performance of the stator of the outer rotor roller motor is good and bad during working, and the normal working and the service life of the outer rotor roller motor are both important. At present, a heat dissipation mechanism of an outer rotor motor stator is mainly classified into an air cooling type and a liquid cooling type from a cold medium during working, wherein the liquid cooling type stator heat dissipation mechanism is better in heat dissipation performance compared with the air cooling type heat dissipation mechanism, so that the heat dissipation mechanism is increasingly emphasized in the industry. For example, chinese patent publication No. CN 107591909a discloses a permanent magnet external rotor motor in which a heat dissipation water path is built in a stator slot and a main water path are connected in series, and the related structure of the motor and the stator cooling is as follows: the motor rear cover is set as a cooler rear end cover, a plurality of stator inner ring waterway water channels are arranged in the cooler rear end cover, a plurality of water blocking pieces and stator inner ring waterway water passing channels are arranged in the cooler rear end cover, a circulating cooling water loop is formed, and a stator inner ring waterway water inlet and a stator inner ring waterway water outlet are arranged on the cooler rear end cover in a way that the cooling water loop is communicated; the motor is characterized in that a stator is arranged on a rear end cover of a cooler, a radiator copper pipe in a groove is arranged in a winding installation groove of the stator, a left cover ring and a right cover ring of a stator groove radiator are respectively arranged at two ends of the stator, a stator groove heat radiation water passing groove is respectively arranged on the left cover ring and the right cover ring of the stator groove radiator, a stator groove heat radiation water passing groove is formed by the left cover ring of the stator groove radiator, the stator groove heat radiation water passing groove, the radiator copper pipe in the groove and the right cover ring of the stator groove radiator to form a stator groove internal circulation cooling water path, a stator groove internal cooling water pipe inlet and a stator groove internal cooling water pipe outlet are arranged on the right cover ring of the stator groove radiator, and a stator inner ring water path water outlet is communicated with a stator groove internal cooling water pipe water inlet through an outer water pipe; thereby forming a series water path, cooling water enters from a water inlet of the water path of the stator inner ring and flows out from a water outlet of the cooling water pipe in the stator groove.
In short, the stator of the aforementioned motor adopts the heat dissipation mechanism that sets up the water route on the stator core body, set up the communicating radiator copper pipe in the winding mounting groove of stator core with aforementioned water route to dispel the heat to the stator during operation, obviously, the stator heat dissipation structure that this motor adopted is good at the during operation radiating effect, but also can obviously see out, the stator heat dissipation structure that this motor adopted also has following not enoughly: firstly, a water path is arranged on the stator core body to realize the heat dissipation of the stator core body, so that the structure of the stator core becomes complex, the processing difficulty is increased, and the manufacturing cost of the core is raised; secondly, the stator heat radiation structure is provided with a heat radiator copper pipe for cooling in a winding installation groove of a stator iron core, so that the installation space of a stator winding is occupied, the effective conductor occupation ratio is reduced, the power of the motor is reduced, and if the power is kept unchanged, the winding installation groove of the stator iron core needs to be increased, so that the outer diameter of the stator iron core is increased, and the integral size of the motor is correspondingly increased; thirdly, the radiator copper pipe in the stator heat radiation structure is attached to the coil, eddy current loss can be generated in the working process, and the motor efficiency is reduced. Therefore, the development of a heat dissipation mechanism of an outer rotor drum motor (outer rotor motor) stator, which has a simpler structure, more convenient processing and production, lower cost and better effect, is a technical problem to be solved urgently in the industry.
Disclosure of Invention
The purpose of the invention is: aiming at the problems in the prior art, the heat dissipation mechanism of the stator of the external rotor roller motor is simple in structure, convenient to install, low in cost, good in heat dissipation effect, capable of enabling the external size of the stator of the external rotor roller motor to be basically unchanged compared with the same motor with the same power and almost not influencing the motor efficiency.
The technical scheme of the invention is as follows: the invention relates to a heat radiation mechanism of an external rotor drum motor stator, which comprises a motor main shaft and a stator fixedly arranged on the motor main shaft and comprising a stator core, and is structurally characterized in that: still including being used for the radiating liquid cooling heat dissipation pipeline of stator, above-mentioned motor spindle is equipped with inlet channel and liquid outlet channel, above-mentioned stator core is equipped with the cooling tube mounting hole that a plurality of axial link up along circumference in the inboard of its winding mounting groove that has, the both ends of above-mentioned liquid cooling heat dissipation pipeline correspond with the inlet channel and the liquid outlet channel of above-mentioned motor spindle respectively and lead to the liquid and be connected, the mid portion of liquid cooling heat dissipation pipeline passes each cooling tube mounting hole of above-mentioned stator core in proper order and closely pastes and fixed connection with the inner wall of each cooling tube mounting hole.
The further scheme is as follows: the liquid inlet channel of the motor spindle comprises a liquid inlet, a liquid inlet pore channel and a liquid outlet connecting hole which are sequentially communicated with each other and integrally connected, the liquid inlet is arranged on one axial end face of the motor spindle, the liquid inlet pore channel is a counter bore channel which is arranged in the motor spindle in an axially inward extending mode from the liquid inlet, and the liquid outlet connecting hole is a through hole which is formed in the motor spindle and is connected with the inner end of the liquid inlet pore channel along the radial direction; the liquid outlet channel comprises a liquid outlet, a liquid outlet pore channel and a liquid inlet connecting hole which are sequentially communicated and integrally connected.
The further scheme is as follows: the liquid outlet connecting hole of the liquid inlet channel of the motor main shaft and the liquid inlet connecting hole of the liquid outlet channel are arranged close to each other in the circumferential direction of the motor main shaft; the liquid inlet channel and the liquid outlet channel of the motor spindle are arranged on the same axial side of the motor spindle or are respectively arranged on two axial sides of the motor spindle.
The further scheme is as follows: more than 3 groups of every 3 adjacent radiating pipe mounting holes of the stator core are arranged in one group; the liquid cooling heat dissipation pipeline comprises a shunt pipe connected with a liquid outlet connecting hole of a liquid inlet channel of the motor main shaft in a liquid flowing mode, a collecting pipe connected with a liquid inlet connecting hole of a liquid outlet channel of the motor main shaft in a liquid flowing mode, 1 perforated straight pipe which is one group and is adjacent to 3 is fixedly arranged in each radiating pipe mounting hole of the stator core respectively, 3 liquid inlet connecting elbows used for connecting the shunt pipe with 3 perforated straight pipes of the first group in a liquid flowing mode, 3 liquid outlet connecting elbows used for connecting the last group of 3 perforated straight pipes with the collecting pipe in a liquid flowing mode, and 3 radiating pipe mounting hole groups which are the same as the radiating pipe mounting hole group number of the stator core in number and are each group, and the group of the radiating pipe mounting elbows used for connecting the groups of the perforated straight pipes in series in a cascading mode between pipes.
The further scheme is as follows: the mode of realizing the serial cascade of each group of perforated straight pipes by the connecting elbows among the pipes is as follows: the 3 intertube connecting elbows in the same group are respectively called as a first intertube connecting elbow, and the first intertube connecting elbow connects the liquid outlet of the perforated straight pipe positioned at the inner side in the front group of perforated straight pipes with the liquid inlet of the perforated straight pipe positioned at the inner side in the rear group of perforated straight pipes; the second inter-pipe connecting elbow connects the liquid outlet of the middle perforated straight pipe in the front group of perforated straight pipes with the liquid inlet of the middle perforated straight pipe in the rear group of perforated straight pipes, and the third inter-pipe connecting elbow connects the liquid outlet of the outer perforated straight pipe in the front group of perforated straight pipes with the liquid inlet of the outer perforated straight pipe in the rear group of perforated straight pipes.
The further scheme is as follows: the length and the crookedness of the three intertube connecting elbows in the same group are different, the three intertube connecting elbows are arranged in a staggered mode, and the outer ends of the three intertube connecting elbows in the same group are basically positioned on the same plane.
The further scheme is as follows: the flow dividing pipe and the collecting pipe are pipe pieces with one ends open and the other ends closed, and 3 liquid through ports are respectively arranged on one sides of the flow dividing pipe and the collecting pipe close to the closed ends; the flow dividing pipe and the collecting pipe are respectively correspondingly connected with the 3 liquid inlet connecting elbows and the 3 liquid outlet connecting elbows through 3 liquid through openings; the opening ends of the shunt pipe and the collecting pipe are respectively in corresponding liquid connection with a liquid outlet connecting hole of a liquid inlet channel of the motor main shaft and a liquid inlet connecting hole of the liquid outlet channel.
The further scheme is as follows: the liquid cooling heat dissipation pipeline further comprises 2 steel main shaft interface short pipes, one ends of the 2 main shaft interface short pipes are respectively connected with the opening ends of the flow dividing pipes and the flow collecting pipe in a liquid flowing mode, and the other ends of the two main shaft interface short pipes are correspondingly connected with a liquid outlet connecting hole of a liquid inlet channel of the motor main shaft and a liquid inlet connecting hole of a liquid outlet channel in a liquid flowing mode.
The further scheme is as follows: the liquid cooling heat dissipation pipeline also comprises 2 sets of the same threaded connecting assemblies, and each threaded connecting assembly comprises a butt joint pipe, a 0-shaped sealing ring and a locking nut; the opening ends of the shunt tubes and the collecting tubes are respectively connected with a liquid outlet connecting hole of a liquid inlet channel of the motor main shaft and a liquid inlet connecting hole of a liquid outlet channel in a liquid flowing mode through 1 set of threaded connecting assembly.
The further scheme is as follows: the perforated straight pipe is fixedly installed in the radiating pipe installation hole of the stator core by adopting a pipe expanding process which can enable the outer wall of the perforated straight pipe to be precisely attached to the inner wall of the radiating pipe installation hole; the shunt tubes, the collecting tubes, the liquid inlet connecting elbow, the liquid outlet connecting elbow, the perforated straight tubes and the inter-tube connecting elbow are all made of red copper; the liquid-passing connection mode among the perforated straight pipe, the liquid inlet connecting elbow, the liquid outlet connecting elbow and the inter-pipe connecting elbow is flaring brazing.
The invention has the positive effects that:
(1) according to the invention, the liquid inlet channel and the liquid outlet channel are arranged in the motor main shaft, the circle of radiating pipe mounting holes are arranged on the stator iron core, the perforated straight pipes are fixedly arranged in the radiating pipe mounting holes, and the liquid cooling radiating pipeline of the stator is constructed by utilizing the connecting elbow, the flow dividing pipe and the collecting pipe, so that compared with the closest prior art, the integral structure is greatly simplified, the processing and the assembly are more convenient during the production of the motor, and the cost is lower.
(2) According to the invention, the perforated straight pipes are arranged in the radiating pipe mounting holes of the stator core by using the pipe expanding process, so that the outer walls of the perforated straight pipes and the inner walls of the radiating pipe mounting holes are precisely attached in the combined direction, the thermal resistance between the perforated straight pipes and the stator core is greatly reduced, and the radiating effect is optimal; compared with the mode that the radiating pipe is arranged in the winding installation groove of the stator in the closest prior art, the radiating effect is better, and the structure design that the outer end faces of the inter-pipe connecting elbows for realizing the serial connection and cascade connection of the perforated straight pipes are arranged in a staggered mode to enable the outer size of the motor adopting the radiating pipe to be basically unchanged compared with the same motor with the same power is adopted, so that the technical problem that the whole size of the motor is increased due to the stator radiating structure in the closest prior art is effectively solved.
(3) According to the invention, the through-hole straight pipes serving as the radiating main bodies are arranged in the radiating pipe mounting holes of the stator core, so that the through-hole straight pipes are not contacted with the stator winding, and the stator winding is basically not influenced during working, thereby effectively solving the technical problem that eddy current loss is generated in the working process to reduce the efficiency of the motor due to the fact that the radiator copper pipe is attached to the stator coil in the closest prior art.
Drawings
Fig. 1 is a schematic perspective view of a stator employing the heat dissipation structure of the present invention, and further shows a motor spindle fixedly connected to the stator;
FIG. 2 is a schematic perspective view of the liquid inlet channel of the motor spindle with a portion of the perforated pipe set and the shunt pipe removed in FIG. 1;
FIG. 3 is a schematic perspective view of the present invention with the stator of FIG. 1 removed;
FIG. 4 is a schematic perspective view of another embodiment of the fluid-passing connection of the shunt tubes and the manifold to the motor spindle according to the present invention;
fig. 5 is an enlarged view at D in fig. 4.
The reference numbers in the above figures are as follows:
the liquid inlet device comprises a motor main shaft 1, a liquid inlet channel 11, a liquid inlet 11-1, a liquid inlet pore channel 11-2, a liquid outlet connecting hole 11-3, a liquid outlet channel 12 and a liquid outlet 12-1;
the stator comprises a stator 2, a stator iron core 21, a winding installation groove 21-1 and a radiating pipe installation hole 21-2;
the liquid cooling heat dissipation pipeline comprises a liquid cooling heat dissipation pipeline 3, a shunt pipe 31, a liquid inlet connecting elbow 32, a perforated straight pipe 33, an inter-pipe connecting elbow 34, a first inter-pipe connecting elbow 34-1, a second inter-pipe connecting elbow 34-2, a third inter-pipe connecting elbow 34-3, a liquid outlet connecting elbow 35, a collecting pipe 36, a main shaft interface short pipe 37, a threaded connecting assembly 38, a butt joint pipe 38-1, a 0-type sealing ring 38-2 and a locking nut 38-3.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
Referring to fig. 1 to 3, the heat dissipation mechanism of the stator of the external rotor drum motor in this embodiment mainly includes a motor spindle 1, a stator 2, and a liquid cooling heat dissipation pipeline 3.
A liquid inlet channel 11 and a liquid outlet channel 12 are arranged in the motor main shaft 1. The liquid inlet channel 11 is formed by sequentially connecting a liquid inlet 11-1, a liquid inlet pore channel 11-2 and a liquid outlet connecting hole 11-3 in a liquid communication way, the liquid inlet 11-1 is arranged on the end surface of one axial side of the motor spindle 1, the liquid inlet pore channel 11-2 is a counter bore channel which extends axially in the motor spindle 1 from the liquid inlet 11-1, the liquid outlet connecting hole 11-3 is a hole which is radially opened on the motor spindle 1, and the inner end of the liquid outlet connecting hole 11-3 is communicated with the inner end of the liquid inlet pore channel 11-2. The liquid outlet channel 12 is composed of a liquid outlet 12-1, a liquid outlet channel and a liquid inlet connecting hole, and has the same structure as the liquid inlet channel 11. The liquid outlet connecting hole 11-3 of the liquid inlet channel 11 and the liquid inlet connecting hole of the liquid outlet channel 12 are arranged close to each other in the circumferential direction of the motor spindle 1, obviously, the liquid inlet channel 11 and the liquid outlet channel 12 of the motor spindle 1 can be arranged on the same axial side of the motor spindle 1, or can be arranged on two axial sides of the motor spindle 1, and preferably, the liquid inlet channel 11 and the liquid outlet channel 12 of the motor spindle 1 are arranged on the same axial side of the motor spindle 1.
The stator 2 is fixedly arranged on the motor spindle 1, the stator 2 comprises a stator core 21 and a winding installation groove 21-1 arranged on the periphery of the stator core 21, and the description of the section is the same as that of the prior art.
Different from the prior art: the stator core 21 of the present embodiment is provided with a plurality of axially penetrating heat pipe mounting holes 21-2 in the circumferential direction on the inner side of the winding mounting groove 21-1. Preferably, the radiating pipe mounting holes 21-2 of the stator core 21 are provided in a group of every adjacent three radiating pipe mounting holes 21-2.
Two ends of the liquid cooling heat dissipation pipeline 3 are respectively connected with the liquid inlet channel 11 and the liquid outlet channel 12 of the motor spindle 1 in a corresponding liquid communication mode, and the middle portion of the liquid cooling heat dissipation pipeline 3 sequentially penetrates through the heat dissipation pipe installation holes 21-2 of the stator iron core 21 and is tightly attached to and fixedly connected with the inner walls of the heat dissipation pipe installation holes 21-2.
As a specific implementation manner, the liquid cooling heat dissipation pipeline 3 mainly comprises a flow dividing pipe 31, three liquid inlet connecting elbows 32, perforated straight pipes 33 with the same number as the heat dissipation pipe mounting holes 21-2 of the stator core 21, a plurality of inter-pipe connecting elbows 34, three liquid outlet connecting elbows 35 and a collecting pipe 36. In cooperation with the preferred manner in which the heat pipe mounting holes 21-2 of the stator core 21 are formed in groups of every adjacent three heat pipe mounting holes 21-2, the perforated straight pipes 33 are also formed in groups of three, and correspondingly, the inter-pipe connecting bends 34 are also formed in groups of three, which are referred to as first inter-pipe connecting bends 34-1, second inter-pipe connecting bends 34-2, and third inter-pipe connecting bends 34-3, respectively (see fig. 3). The material of the shunt pipe 31, the liquid inlet connecting elbow 32, the perforated straight pipe 33, the inter-pipe connecting elbow 34, the liquid outlet connecting elbow 35 and the collecting pipe 36 is preferably red copper with the second heat conductivity to silver.
The perforated straight pipe 33 is fixedly provided with 1 pipe in each radiating pipe mounting hole 21-2 of the stator core 21, and the outer wall of the perforated straight pipe 33 is closely attached to the inner wall of the radiating pipe mounting hole 21-2 of the stator core 21, so as to enhance the heat transfer effect. In this embodiment, the fixed mounting manner of the perforated straight pipe 33 in the heat dissipation pipe mounting hole 21-2 is fixed and mounted by using an expanding pipe process, and the expanding pipe mounting manner can precisely attach the outer wall of the perforated straight pipe 33 to the inner wall of the heat dissipation pipe mounting hole 21-2, thereby greatly reducing the thermal resistance between the perforated straight pipe 33 and the stator core 21 and enabling the heat dissipation effect to be optimal.
The shunt pipe 31 and the collecting pipe 36 are pipe pieces with one ends open and the other ends closed, and 3 liquid through ports are respectively arranged on one sides of the shunt pipe 31 and the collecting pipe 36 close to the closed ends. As a basic implementation manner of liquid communication connection between the shunt pipe 31 and the collecting pipe 36 and the motor spindle 1, the open end of the shunt pipe 31 is matched with a liquid outlet connecting hole 11-3 of a liquid inlet channel 11 of the motor spindle for liquid communication and fixed connection, and the fixed connection manner is welding; the collecting pipe 36 is fixedly connected with a liquid inlet connecting hole of the liquid outlet channel 12 of the motor spindle in a liquid feeding and communicating mode by matching the opening end of the collecting pipe with the liquid inlet connecting hole, and the fixed connection mode is welding.
As a first preferred mode of liquid connection between the dividing pipe 31 and the collecting pipe 36 and the motor main shaft 1, the liquid cooling heat dissipation pipeline 3 further comprises two steel main shaft interface short pipes 37, one end of each of the two main shaft interface short pipes 37 is respectively connected with the opening ends of the dividing pipe 31 and the collecting pipe 36 in a welding and liquid-passing manner, the other end of each of the two main shaft interface short pipes 37 is correspondingly connected with the liquid outlet connecting hole 11-3 of the liquid inlet channel 11 of the motor main shaft 1 and the liquid inlet connecting hole of the liquid outlet channel 12 in a welding and liquid-passing manner, and the two steel main shaft interface short pipes 37 can utilize the characteristic that good mutual weldability exists between the steel main shaft interface short pipes 37 and the motor main shaft 1 so as to increase the connection strength.
Referring to fig. 4 and 5, as a second preferred mode of liquid-flowing connection between the diversion pipe 31 and the bus pipe 36 and the motor spindle 1, the liquid-cooling heat dissipation pipeline 3 further includes two sets of identical threaded connection assemblies 38, and the diversion pipe 31 and the bus pipe 36 are respectively in liquid-flowing connection with the liquid inlet channel 11 and the liquid outlet channel 12 of the motor spindle 1 through 1 set of threaded connection assemblies 38. As a specific implementation, threaded connection assembly 38 includes a butt pipe 38-1, a type 0 packing 38-2, and a lock nut 38-3. The upper and lower peripheries of the butt joint pipe 38-1 are provided with connecting threads, the middle periphery of the butt joint pipe 38-1 is provided with a hexagonal protrusion for connecting fastening operation, the material of the butt joint pipe 38-1 is preferably brass, and the material of the lock nut 38-3 is preferably stainless steel. In cooperation with this preferred mode, the liquid outlet connection hole 11-3 of the liquid inlet channel 11 of the motor spindle 1 and the liquid inlet connection hole of the liquid outlet channel 12 are respectively provided with an internal thread for connection, and the lower ports of the opening ends of the shunt tube 31 and the collecting tube 36 are provided with a folding portion. The lower parts of the two butt joint pipes 38-1 are respectively in sealed threaded connection and liquid-passing connection with the liquid outlet connection hole 11-3 of the liquid inlet channel 11 of the motor spindle 1 and the liquid inlet connection hole of the liquid outlet channel 12, the upper ends of the two butt joint pipes 38-1 are respectively in tight abutting connection with the folding parts of the opening ends of the flow dividing pipe 31 and the collecting pipe 36 after being additionally provided with a 0-shaped sealing ring 38-2 and are respectively connected and fastened by 1 locking nut 38-3, and therefore the flow dividing pipe 31 and the collecting pipe 36 are respectively in liquid-passing connection with the liquid inlet channel 11 and the liquid outlet channel 12 of the motor spindle 1 through two sets of threaded connection assemblies 38. Compared with the welding method, the motor spindle 1 of the preferred mode can be more effectively applied to the motor spindles 1 made of different materials, and the applicability is stronger.
Still referring to fig. 1 to 3, the shunt tube 31 is fixedly connected with the liquid inlet at each end of the three liquid inlet connecting elbows 32 through 3 liquid inlets thereof; the other ends of the three liquid inlet connecting elbows 32 are respectively and correspondingly fixedly connected with the perforated straight pipe group positioned at the liquid passing initial position, namely, the one end of each of the first group of three perforated straight pipes 33, the other ends of the first group of three perforated straight pipes 33 are respectively and correspondingly fixedly connected with the one end of each of the first group of three inter-pipe connecting elbows 34, the other ends of the first group of three inter-pipe connecting elbows 34 are respectively and correspondingly fixedly connected with the one end of each of the second group of three perforated straight pipes 33, thus, the three perforated straight pipes 33 of each group are cascaded through the inter-pipe connecting elbows 34 of each group, the end of the perforated straight pipe group at the end of liquid passing, that is, the end of the last group of three perforated straight pipes 33 which is not cascaded, is respectively and fixedly connected with one end of the three liquid outlet connecting elbows 35, and the other ends of the three liquid outlet connecting elbows 35 are respectively and fixedly connected with 3 liquid passing ports of the collecting pipe 36. Therefore, when the cooling device is used, cooling liquid (such as water) input from the liquid inlet channel 11 of the motor main shaft 1 is divided by the flow dividing pipe 31, flows from the three independently-communicated liquid through channels to the collecting pipe 36 and is collected, and then is discharged from the liquid outlet channel 12 of the motor main shaft 1, so that the stator liquid-cooling type heat dissipation and temperature reduction are realized during working.
The liquid-feeding fixed connection mode of the dividing pipe 31 and the three liquid-inlet connecting elbows 32 and the liquid-collecting pipe 36 and the three liquid-outlet connecting elbows 35 are preferably welded; the liquid-passing fixed connection mode between the perforated straight pipe 33 and each connecting elbow is preferably flaring brazing.
Referring to fig. 3, the specific way of cascading two adjacent sets of three perforated straight tubes 33 in series by one set of inter-tube connecting elbows 34 is: in the same group of three inter-pipe connecting elbows 34, the first inter-pipe connecting elbow 34-1 connects the liquid outlet of the perforated straight pipe 33 positioned at the inner side (i.e. the side close to the adjacent perforated pipe group) in the previous group of perforated straight pipes 33 with the liquid inlet of the perforated straight pipe 33 positioned at the inner side in the next group of perforated straight pipes 33; the second inter-pipe connecting elbow 34-2 connects the liquid outlet of the middle perforated straight pipe 33 in the first group of perforated straight pipes 33 with the liquid inlet of the middle perforated straight pipe 33 in the second group of perforated straight pipes 33, and the third inter-pipe connecting elbow 34-3 connects the liquid outlet of the outer perforated straight pipe 33 in the first group of perforated straight pipes 33 with the liquid inlet of the outer perforated straight pipe 33 in the second group of perforated straight pipes 33. Preferably, the three intertube in the same group connects elbow 34 length and crookedness different, three intertube in the same group connects elbow 34 to adopt the dislocation mode setting, make the outer end of connecting elbow 34 basically in the coplanar between the three intertube in the same group, so preferred mode of setting, both can prolong liquid cooling radiating pipeline 3's length in order to promote the radiating effect, can reduce the tip size of liquid cooling radiating pipeline 3 in stator core 22 both sides again, avoid stator axial dimension too big, thereby space utilization in the promotion motor, avoid increasing the whole volume of motor.
The above embodiments are illustrative of specific embodiments of the present invention, and are not meant to limit the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention to obtain corresponding equivalent technical solutions, therefore all equivalent technical solutions should fall into the scope of the present invention.
Claims (10)
1. The utility model provides a heat dissipation mechanism of external rotor drum motor stator, includes the motor spindle, fixes locating including stator core's stator, its characterized in that on the motor spindle: still including being used for the radiating liquid cooling heat dissipation pipeline of stator, motor spindle is equipped with inlet channel and liquid outlet channel, stator core is equipped with the cooling tube mounting hole that a plurality of axial link up along circumference in the inboard of its winding mounting groove that has, the both ends of liquid cooling heat dissipation pipeline respectively with motor spindle's inlet channel and liquid outlet channel correspond to lead to the liquid and connect, and the mid portion of liquid cooling heat dissipation pipeline passes in proper order each cooling tube mounting hole of stator core and with the inner wall close fitting and the fixed connection of each cooling tube mounting hole.
2. The heat dissipating mechanism of an external rotor drum motor stator according to claim 1, wherein: the liquid inlet channel of the motor spindle comprises a liquid inlet, a liquid inlet pore channel and a liquid outlet connecting hole which are sequentially communicated with liquid and integrally connected, the liquid inlet is arranged on one axial end face of the motor spindle, the liquid inlet pore channel is a counter bore channel which is formed by extending inwards in the motor spindle from the liquid inlet along the axial direction, and the liquid outlet connecting hole is a through hole which is formed in the motor spindle and is connected with the inner end of the liquid inlet pore channel along the radial direction; the liquid outlet channel comprises a liquid outlet, a liquid outlet pore channel and a liquid inlet connecting hole which are sequentially communicated with liquid and integrally connected.
3. The heat dissipation mechanism for an external rotor drum motor stator according to claim 2, wherein: the liquid outlet connecting hole of the liquid inlet channel of the motor main shaft and the liquid inlet connecting hole of the liquid outlet channel are arranged close to each other in the circumferential direction of the motor main shaft; the liquid inlet channel and the liquid outlet channel of the motor spindle are arranged on the same axial side of the motor spindle or are respectively arranged on two axial sides of the motor spindle.
4. The heat dissipation mechanism for an external rotor drum motor stator according to claim 2, wherein: more than 3 groups of every 3 adjacent radiating pipe mounting holes of the stator core are arranged in one group; the liquid cooling heat dissipation pipeline include with the shunt tubes that the feed liquor connecting hole of motor spindle's inlet channel leads to liquid and connects, with the collector tube that the feed liquor connecting hole of motor spindle's feed liquor channel leads to liquid and connects 1 and every adjacent 3 perforation straight tubes that are a set of are fixed respectively in stator core's each cooling tube mounting hole for with 3 feed liquor connection elbows that shunt tubes and the first 3 perforation straight tubes of a set of lead to liquid and are connected, be used for with last a set of 3 perforation straight tubes with 3 play liquid connection elbows that the collector tube leads to liquid and connects, and the group number with stator core's cooling tube mounting hole group number is the same and every group 3, be used for connecting the elbow between each group of perforation straight tubes concatenating.
5. The heat dissipation mechanism for an external rotor drum motor stator according to claim 4, wherein: the mode that the connecting elbows among the pipes realize the cascade connection of all groups of perforated straight pipes in series is as follows: the 3 intertube connecting elbows in the same group are respectively called as a first intertube connecting elbow, and the first intertube connecting elbow connects the liquid outlet of the perforated straight pipe positioned at the inner side in the front group of perforated straight pipes with the liquid inlet of the perforated straight pipe positioned at the inner side in the rear group of perforated straight pipes; the second inter-pipe connecting elbow connects the liquid outlet of the middle perforated straight pipe in the front group of perforated straight pipes with the liquid inlet of the middle perforated straight pipe in the rear group of perforated straight pipes, and the third inter-pipe connecting elbow connects the liquid outlet of the outer perforated straight pipe in the front group of perforated straight pipes with the liquid inlet of the outer perforated straight pipe in the rear group of perforated straight pipes.
6. The heat dissipation mechanism for an external rotor drum motor stator according to claim 5, wherein: the length and the curvature of the three inter-pipe connecting elbows in the same group are different, the three inter-pipe connecting elbows are arranged in a staggered mode, and the outer ends of the three inter-pipe connecting elbows in the same group are basically located on the same plane.
7. The heat dissipation mechanism for an external rotor drum motor stator according to claim 4, wherein: the flow dividing pipe and the collecting pipe are pipe pieces with one ends open and the other ends closed, and 3 liquid through ports are respectively arranged on one sides of the flow dividing pipe and the collecting pipe close to the closed ends; the flow dividing pipe and the collecting pipe are respectively correspondingly connected with the 3 liquid inlet connecting elbows and the 3 liquid outlet connecting elbows through 3 liquid passing ports; the opening ends of the shunt pipe and the collecting pipe are respectively in corresponding liquid connection with a liquid outlet connecting hole of a liquid inlet channel of the motor main shaft and a liquid inlet connecting hole of the liquid outlet channel.
8. The heat dissipation mechanism for an external rotor drum motor stator according to claim 7, wherein: the liquid cooling heat dissipation pipeline further comprises 2 steel main shaft interface short pipes, one ends of the 2 main shaft interface short pipes are respectively connected with the opening ends of the flow dividing pipes and the flow collecting pipe in a liquid flowing mode, and the other ends of the two main shaft interface short pipes are correspondingly connected with a liquid outlet connecting hole of a liquid inlet channel of the motor main shaft and a liquid inlet connecting hole of a liquid outlet channel in a liquid flowing mode.
9. The heat dissipation mechanism for an external rotor drum motor stator according to claim 7, wherein: the liquid cooling heat dissipation pipeline also comprises 2 sets of same threaded connecting assemblies, and each threaded connecting assembly comprises a butt joint pipe, a 0-shaped sealing ring and a locking nut; the opening ends of the shunt tubes and the collecting tubes are respectively connected with a liquid outlet connecting hole of a liquid inlet channel of the motor main shaft and a liquid inlet connecting hole of a liquid outlet channel in a liquid flowing mode through 1 set of threaded connecting assembly.
10. The heat dissipation mechanism for the stator of the external rotor roller motor according to any one of claims 4 to 9, comprising: the perforated straight pipe is fixedly installed in the radiating pipe installation hole of the stator core by adopting a pipe expanding process which can enable the outer wall of the perforated straight pipe to be precisely attached to the inner wall of the radiating pipe installation hole; the flow dividing pipe, the collecting pipe, the liquid inlet connecting elbow, the liquid outlet connecting elbow, the perforated straight pipe and the inter-pipe connecting elbow are all made of red copper; the liquid passing connection mode among the perforated straight pipe, the liquid inlet connection elbow, the liquid outlet connection elbow and the inter-pipe connection elbow is flaring brazing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210306947.XA CN114448118A (en) | 2022-03-25 | 2022-03-25 | Heat dissipation mechanism of outer rotor roller motor stator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210306947.XA CN114448118A (en) | 2022-03-25 | 2022-03-25 | Heat dissipation mechanism of outer rotor roller motor stator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831043A (en) * | 2019-04-03 | 2019-05-31 | 安徽特芯电子科技有限公司 | A kind of switched reluctance machines of built-in liquid cooling pipeline |
| CN111463933A (en) * | 2020-05-20 | 2020-07-28 | 盾石磁能科技有限责任公司 | Motor cooling structure and motor |
| CN213754128U (en) * | 2020-12-04 | 2021-07-20 | 珠海格力电器股份有限公司 | Motor heat radiation structure and air suspension air compressor using same |
| CN214228072U (en) * | 2020-12-21 | 2021-09-17 | 长城汽车股份有限公司 | Cooling structure of driving system assembly and vehicle |
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2022
- 2022-03-25 CN CN202210306947.XA patent/CN114448118A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831043A (en) * | 2019-04-03 | 2019-05-31 | 安徽特芯电子科技有限公司 | A kind of switched reluctance machines of built-in liquid cooling pipeline |
| CN111463933A (en) * | 2020-05-20 | 2020-07-28 | 盾石磁能科技有限责任公司 | Motor cooling structure and motor |
| CN213754128U (en) * | 2020-12-04 | 2021-07-20 | 珠海格力电器股份有限公司 | Motor heat radiation structure and air suspension air compressor using same |
| CN214228072U (en) * | 2020-12-21 | 2021-09-17 | 长城汽车股份有限公司 | Cooling structure of driving system assembly and vehicle |
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