CN114928197B - Brushless motor - Google Patents
Brushless motor Download PDFInfo
- Publication number
- CN114928197B CN114928197B CN202210775430.5A CN202210775430A CN114928197B CN 114928197 B CN114928197 B CN 114928197B CN 202210775430 A CN202210775430 A CN 202210775430A CN 114928197 B CN114928197 B CN 114928197B
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- main shaft
- heat absorption
- radiating
- impeller
- flow channels
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- 238000010521 absorption reaction Methods 0.000 claims abstract description 97
- 238000001816 cooling Methods 0.000 claims abstract description 43
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims abstract description 7
- 230000017525 heat dissipation Effects 0.000 claims description 23
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 14
- 239000000110 cooling liquid Substances 0.000 description 41
- 239000000428 dust Substances 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000010405 clearance mechanism Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- 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
- H02K1/14—Stator cores with salient poles
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
-
- 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
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to the technical field of motors, and particularly discloses a brushless motor, which comprises a motor casing, wherein an end cover is arranged at one end of the motor casing, a main shaft bearing is arranged at one end of the motor casing and the inside of the end cover in a penetrating manner, a main shaft is rotatably connected to the inner side of the main shaft bearing, a permanent magnet rotor is arranged at the outer side of the main shaft, the brushless motor comprises a plurality of stator iron cores, stator windings are sleeved and arranged on the outer side of each stator iron core, a water cooling assembly and an air cooling assembly are arranged in the motor casing, a driving mechanism is arranged between the water cooling assembly and the air cooling assembly, the water cooling assembly comprises a waterway unit, a radiating unit and a propelling unit, the waterway unit comprises a radiating block and a radiating pipe, heat absorption straight flow channels are respectively arranged at one side of the inside of the radiating blocks, heat absorption auxiliary flow channels are respectively arranged inside the heat absorption straight flow channels, and two ends of the heat absorption auxiliary flow channels are respectively communicated with the inner sides of the heat absorption straight flow channels. The invention has the characteristics of good cooling effect, good running stability and longer service life.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a brushless motor.
Background
The brushless DC motor is composed of a motor main body and a driver, and is a typical electromechanical integrated product. Because the brushless DC motor operates in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under heavy load under variable frequency speed regulation, and oscillation and step-out can not be generated when the load is suddenly changed.
The patent publication No. CN105356644B discloses a brushless motor, which comprises a stator and a rotor, wherein the stator comprises two end covers and a bearing fixed on the outer side of each end cover, the rotor comprises a rotating shaft, the rotating shaft penetrates through the bearing, the bearing rotatably supports the rotating shaft, the brushless motor is small in size and easy to assemble, and when the motor is connected to a gear box, a connecting shell of the gear box can be positioned through the axial end of the bearing, so that the same positioning reference of the gear box and the motor is maintained. Based on the above search, in combination with the prior art, the existing brushless motor is usually air-cooled to dissipate heat, so that the heat dissipation effect is poor, the heat productivity of the winding coil and the stator core of the motor is large after the motor runs for a long time under a heavy load, the running stability of the motor is reduced after the motor runs for a long time at a high temperature, and the service life of the motor is shortened.
Disclosure of Invention
The invention aims to solve the technical problems of the existing brushless motor and provides the brushless motor with good cooling effect, good running stability and longer service life.
The brushless motor comprises a motor shell, wherein an end cover is arranged at one end of the motor shell, main shaft bearings are arranged at one end of the motor shell and inside the end cover in a penetrating mode, main shafts are connected to the inner sides of the two main shaft bearings in a penetrating and rotating mode, permanent magnet rotors are arranged on the outer sides of the main shafts and located at the inner sides of the motor shell, a plurality of stator iron cores are arranged on the outer sides of the stator iron cores in a sleeved mode, stator windings are arranged on the outer sides of the stator iron cores in a sleeved mode, a water cooling assembly and an air cooling assembly are arranged inside the motor shell, a driving mechanism is arranged between the water cooling assembly and the air cooling assembly, the water cooling assembly comprises a waterway unit, a radiating unit and a propelling unit, the waterway unit comprises radiating blocks with the same number as that of the stator iron cores and radiating pipes with the same number as that of the stator iron cores, a plurality of radiating blocks are fixedly connected with the stator iron cores, straight heat absorption channels are arranged on one side of the inner sides of the radiating blocks, heat absorption auxiliary channels are arranged on the other side of the inner sides of the radiating blocks, two ends of the radiating pipes are respectively communicated with the inner sides of the straight heat absorption channels, and two ends of the auxiliary heat absorption channels are respectively communicated with the straight heat absorption channels. The invention drives the driving mechanism to move through the main shaft, the driving mechanism drives the water cooling assembly to work, thereby respectively driving the cooling liquid on the inner sides of the heat absorption straight flow channels, the heat absorption auxiliary flow channels and the heat absorption auxiliary flow channels to circularly flow, the cooling liquid can absorb heat in the heat dissipation blocks and the stator iron core when flowing on the inner sides of the heat absorption auxiliary flow channels, and the cooling liquid can release heat when flowing on the inner sides of the heat dissipation channels.
Preferably, the heat dissipation unit comprises heat dissipation fins fixed on the outer sides of the heat dissipation pipes, ventilation grooves are formed in the heat dissipation fins, pistons are connected to the inner sides of the heat absorption straight flow channels in a sliding mode, the pushing unit comprises piston push rods fixed on the other ends of the pistons, and rollers are connected to one ends of the piston push rods in a rotating mode. The ventilation grooves can increase the contact area between the radiating fins and the air, thereby being beneficial to rapidly radiating heat; when the convex side of the cam disc in the driving mechanism is contacted with one roller, the roller pushes the piston push rod to move to the rightmost end of the heat absorption straight flow channel, so that the piston is driven to move to the rightmost end of the heat absorption straight flow channel, the piston is compressed by the piston return spring, the cooling liquid at the right end of the heat absorption straight flow channel is pressed into the inner side of the radiating pipe, at the moment, the left end space of the heat absorption straight flow channel is increased, the original cooling liquid at the inner side of the radiating pipe flows into the left end space of the heat absorption straight flow channel, after the convex side of the cam disc in the driving mechanism is separated from the roller, the piston return spring releases elastic force to push the piston and the piston push rod to reversely move, the piston moves to the left end of the heat absorption straight flow channel, the cooling liquid at the left end of the heat absorption straight flow channel is pressed into the left end space of the heat absorption auxiliary flow channel, the cooling liquid flows into the right end space of the heat absorption auxiliary flow channel, and then flows into the right end space of the heat absorption straight flow channel, and when the piston moves to the right next time, the next circulation can be performed, and a good cooling effect is achieved.
Preferably, the air cooling assembly comprises a first limiting ring fixed at one end of the outer side of the main shaft, an impeller sleeved on the outer side of the main shaft and positioned at one end of the first limiting ring, and a second limiting ring fixed at one end of the main shaft and positioned at one end of the impeller, one end of the second limiting ring is connected with an impeller return spring sleeved on the outer side of the main shaft, and one end of the impeller return spring is propped against one end of the impeller. The first spacing ring and the second spacing ring can carry out good spacing to the impeller for the impeller is only in main epaxial round trip slip, and impeller return spring is used for realizing the good reset of impeller, and when cam disc and counter weight cam disc moved when promoting the impeller left shift in actuating mechanism, the impeller compressed impeller return spring, can paste the brush of its one side clearance mechanism in one side of filter screen, and the impeller rotates at this moment and drives the brush and rotate, and the brush is scraped the dust on filter screen surface, has played the effect of automatic deashing, need not to dismantle the protection casing and deashing, has improved convenient to use.
Preferably, the cleaning mechanism comprises a plurality of circumferentially arranged brush rods fixed at one end of the impeller and positioned at the edge, and one sides of the brush rods are respectively provided with a brush. The impeller drives the brush rod to rotate, so that the brush is attached to one side of the filter screen, and dust on one side of the filter screen can be scraped off.
Preferably, the driving mechanism comprises a cam disc and a counterweight cam disc, the cam disc is sleeved on one end of the outer side of the main shaft in a sliding mode, the counterweight cam disc is sleeved on one end of the cam disc, and clamping units with the same structure are arranged between the cam disc and the counterweight cam disc and between the counterweight cam disc and the main shaft respectively. The driving mechanism is used for driving the roller to reciprocate so as to drive the piston to reciprocate, so that the cooling liquid circularly flows in the waterway unit, particularly when the convex side of the cam plate is contacted with one roller, the roller pushes the piston push rod to move to the rightmost end of the heat absorption straight flow channel, thereby driving the piston to move to the rightmost end of the heat absorption straight flow channel, and simultaneously compressing the piston return spring, thereby realizing the circulation flow of the cooling liquid among the heat absorption straight flow channel, the heat absorption auxiliary flow channel and the radiating pipe and achieving the cooling effect.
Preferably, the clamping unit comprises a spring cavity arranged on one side of the main shaft and a positioning groove arranged at the position, corresponding to the spring cavity, of the inner side of the cam disc, a sliding plate is connected to the inner side of the spring cavity in a sliding mode, one end of the sliding plate is connected with a jacking spring, one end of the jacking spring is connected with one end of the inner portion of the spring cavity, and a positioning protruding block extending to the outer portion of the main shaft is fixed to the other end of the sliding plate. The spring cavity provides good movable space for the sliding plate and the jacking spring, ensures stability of movement, and realizes positioning between the positioning convex block and the positioning groove by the elastic acting force of the jacking spring, so that the cam disc and the counterweight cam disc are well positioned in the axial direction.
Preferably, one end of the positioning lug and the inner side of the positioning groove are in spherical structures, and one end of the positioning lug is matched with the inner side of the positioning groove. The spherical structure can enable the positioning protruding block to move downwards when being subjected to transverse pressure, so that the cam disc and the counterweight cam disc move outside the main shaft, the impeller can be pushed to move leftwards, the impeller compresses the impeller return spring, a hairbrush on one side of the impeller is attached to one side of the filter screen, at the moment, the impeller rotates to drive the hairbrush to rotate, and the hairbrush scrapes dust on the surface of the filter screen, so that the effect of automatic ash removal is achieved.
Preferably, the inner sides of the radiating pipes are respectively provided with a second one-way valve at the middle section position. The second one-way valve can flexibly control the flow of the cooling liquid in the radiating pipe according to the requirement.
Preferably, the inner sides of the heat absorption auxiliary flow channels are respectively provided with a first one-way valve at the middle section position. The first one-way valve can well control the flow of the cooling liquid in the heat absorption auxiliary flow channel.
Preferably, the inner sides of the radiating pipes and the heat absorption auxiliary flow channels are respectively provided with an electric control stop valve at one end position. The electric control stop valve can stop the flow of the cooling liquid in the radiating pipe, the heat absorption straight flow channel and the heat absorption auxiliary flow channel according to the requirement.
Preferably, one ends of the pistons are connected with piston return springs, and one ends of the piston return springs are connected with one ends of the heat absorption straight channels respectively. The piston return spring can well realize the return of the piston, so that the piston can press the cooling liquid into the radiating pipe from the heat absorption straight flow passage.
Preferably, the outside of motor casing is located one end position department and is fixed with the protection casing, the one end of protection casing is located border position department and has seted up the air intake, the inboard of protection casing corresponds the position department of air intake and all has pasted the filter screen, the protection casing other end corresponds the position department of cooling tube and all inserts and is equipped with out the tuber pipe, the one end that goes out the tuber pipe all is fixed with the shrink piece. The protection cover and the filter screen can effectively prevent dust from entering the motor casing, the air outlet pipe is used for exhausting air, the contraction piece accelerates the flow speed of the exhausted air, and therefore the air flow efficiency is improved, and the heat dissipation efficiency is improved.
Preferably, blades arranged circumferentially are fixed to the outer side of the impeller. The blades which are circumferentially arranged can better blow air to one side of the radiating pipe, so that air nearby the radiating pipe is quickened to flow, and radiating efficiency is better improved.
Preferably, the air outlet pipe is in a cross structure. The air outlet pipe of the cross-shaped structure enables the discharged air to be just blown to the radiating fins, so that the blown air can be fully utilized, and the targeted cooling is realized.
Preferably, the cam plate and the counterweight cam plate are symmetrically arranged. The inertia generated by rotation can be counteracted, the motor is prevented from swinging, and the running stability of the motor is improved.
The invention has the following beneficial effects:
(1) The main shaft drives the driving mechanism to move, and the driving mechanism drives the water cooling assembly to work, so that cooling liquid on the inner sides of the heat absorption straight flow channels, the heat absorption auxiliary flow channels and the heat dissipation tubes is respectively driven to circularly flow, when the cooling liquid flows on the inner sides of the heat absorption straight flow channels and the heat absorption auxiliary flow channels, the cooling liquid can absorb heat in the heat dissipation blocks and the stator iron cores, and when the cooling liquid flows on the inner sides of the heat dissipation tubes, the cooling liquid can release heat;
(2) The air cooling component is used for blowing air to one side of the radiating pipe, accelerating the air flow nearby the radiating pipe, assisting the water cooling component to work, and better improving the radiating efficiency;
(3) The driving mechanism is used for driving the propulsion unit to reciprocate, so that the cooling liquid circularly flows in the waterway unit, the cooling liquid circularly flows among the heat absorption straight flow channel, the heat absorption auxiliary flow channel and the radiating pipe, and the cooling effect is achieved.
Drawings
FIG. 1 is a schematic view of a first view structure according to the present invention;
FIG. 2 is a schematic view of a second view angle structure according to the present invention;
FIG. 3 is a schematic view of a first view structure in cross section according to the present invention;
FIG. 4 is a schematic diagram of a cross-sectional second view angle structure of the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 3A according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of FIG. 4B in accordance with the present invention;
FIG. 7 is a schematic structural view of an axial clamping mechanism according to the present invention;
FIG. 8 is a schematic cross-sectional view of a heat sink according to the present invention;
Fig. 9 is an enlarged sectional structural view of the present invention at C in fig. 1.
The marks in the drawings are:
1-motor shell, 2-end cover, 3-main shaft bearing, 4-main shaft, 5-permanent magnet rotor, 6-heat dissipation block, 7-stator core, 8-stator winding, 9-cam disk, 10-counterweight cam disk, 11-heat absorption straight flow channel, 12-heat dissipation tube, 13-heat absorption auxiliary flow channel, 14-piston, 15-piston push rod, 16-piston return spring, 17-first check valve, 18-second check valve, 19-electric control stop valve, 20-roller, 21-impeller, 22-blade, 23-first limit ring, 24-impeller return spring, 25-second limit ring, 26-protective cover, 27-air inlet, 29-filter screen, 30-brush rod, 31-brush, 32-spring cavity, 33-slide plate, 34-lifting spring, 35-positioning lug, 36-positioning groove, 37-air outlet tube, 38-shrinkage sheet, 39-ventilation groove and 42-heat dissipation sheet.
Detailed Description
The invention is further illustrated by the following examples and figures, which are not intended to be limiting.
The brushless motor as shown in fig. 1 and 2 comprises a motor casing 1, an end cover 2 is installed at one end of the motor casing 1, spindle bearings 3 are installed in a penetrating mode at one end of the motor casing 1 and the inside of the end cover 2, spindles 4 are connected to the inner sides of the two spindle bearings 3 in penetrating and rotating mode, a permanent magnet rotor 5 is installed at the inner side position of the motor casing 1 on the outer side of the spindle 4, a plurality of stator iron cores 7 are further included, stator windings 8 are installed on the outer side of each stator iron core 7 in a sleeved mode, a water cooling component and an air cooling component are arranged in the motor casing 1, a driving mechanism is arranged between the water cooling component and the air cooling component, the water cooling component comprises a waterway unit, a radiating unit and a propelling unit, and the waterway unit comprises radiating blocks 6 with the same quantity as the stator iron cores 7, The same number of radiating pipes 12 as the stator core 7, a plurality of radiating blocks 6 are fixedly connected with the stator core 7, heat absorption straight flow passages 11 are respectively arranged on one side of the inner parts of the radiating blocks 6, heat absorption auxiliary flow passages 13 are respectively arranged on the other side of the inner parts of the radiating blocks 6, second one-way valves 18 are respectively arranged on the inner sides of the radiating pipes 12 at the middle section positions, two ends of the radiating pipes 12 are respectively communicated with the inner sides of the heat absorption straight flow passages 11, first one-way valves 17 are respectively arranged on the inner sides of the heat absorption auxiliary flow passages 13 at the middle section positions, two ends of the heat absorption auxiliary flow passages 13 are respectively communicated with the inner sides of the heat absorption straight flow passages 11, pistons 14 are respectively and slidably connected with the inner sides of the heat absorption straight flow passages 11, electric control stop valves 19 are respectively arranged on the inner sides of the radiating pipes 12 and the heat absorption auxiliary flow passages 13 at one end positions, the pushing unit is fixed on the piston push rods 15 at the other ends of the pistons 14, one ends of the piston push rods 15 are respectively and rotatably connected with rollers 20, one ends of the pistons 14 are respectively and rotatably connected with piston return springs 16 shown in fig. 5, one ends of the piston return springs 16 are respectively connected with one ends of the heat absorption straight channels 11, when the convex side of the cam disk 9 is contacted with one roller 20, the rollers 20 push the piston push rods 15 to move to the rightmost end of the heat absorption straight channels 11, thereby driving the pistons 14 to move to the rightmost end of the heat absorption straight channels 11 and simultaneously compressing the piston return springs 16, the pistons 14 press the cooling liquid at the right end of the heat absorption straight channels 11 into the inner side of the radiating pipes 12, at the moment, the space at the left end of the heat absorption straight channels 11 is increased, the original cooling liquid at the inner side of the radiating pipes 12 flows into the space at the left end of the heat absorption straight channels 11, and when the convex side of the cam disk 9 is separated from the roller 20, the piston return spring 16 releases elasticity to push the piston 14 and the piston push rod 15 to move reversely, the piston 14 moves towards the left end of the heat absorption straight flow channel 11, the cooling liquid at the left end of the heat absorption straight flow channel 11 is pressed into the left end space of the heat absorption auxiliary flow channel 13, the cooling liquid flows into the right end space of the heat absorption auxiliary flow channel 13 through the first one-way valve 17 and then flows into the right end space of the heat absorption straight flow channel 11, when the piston 14 moves right next time, the cooling liquid can absorb the heat of the stator iron core 7 when flowing inside the heat absorption straight flow channel 11 and the heat absorption auxiliary flow channel 13, the cooling liquid is circulated to the inner side of the radiating pipe 12 after absorbing the heat, and the heat is radiated to the radiating pipe 12 and the radiating fin 42, so that a good cooling effect is achieved, the heating value of the motor under the long-time heavy-load use condition is reduced, the running stability of the motor is improved, and the service life of the motor is prolonged.
The air cooling assembly comprises a first limiting ring 23 fixed at one end of the outer side of the main shaft 4, an impeller 21 sleeved on the outer side of the main shaft 4 and positioned at one end of the first limiting ring 23, and a second limiting ring 25 fixed at one end of the main shaft 4 and positioned at one end of the impeller 21, wherein one end of the second limiting ring 25 is connected with an impeller return spring 24 sleeved on the outer side of the main shaft 4 and shown in fig. 6, one end of the impeller return spring 24 abuts against one end of the impeller 21, blades 22 in circumferential arrangement are fixed on the outer side of the impeller 21, a cleaning mechanism is arranged at one end of the impeller 21, and the air cooling assembly is used for blowing air to one side of the radiating pipe 12, so that air flow nearby the air cooling assembly is quickened, and radiating efficiency is improved.
The radiating unit comprises radiating fins 42 fixed on the outer sides of the radiating pipes 12, and ventilation grooves 39 shown in fig. 8 are formed in the radiating fins 42, and the ventilation grooves 39 can increase the contact area between the radiating fins 42 and air, so that the radiating of heat is facilitated.
The driving mechanism comprises a cam disc 9 which is arranged at one end of the outer side of the main shaft 4 in a sliding mode, a counterweight cam disc 10 which is arranged at one end of the cam disc 9 and is arranged at the outer side of the main shaft 4 in a sliding mode and is shown in fig. 3, clamping units with the same structure are arranged between the cam disc 9 and the counterweight cam disc 10 and the main shaft 4 respectively, the driving mechanism is used for driving rollers 20 to reciprocate, further driving pistons 14 to reciprocate, enabling cooling liquid to circularly flow in a waterway unit, particularly when the convex side of the cam disc 9 is contacted with one of the rollers 20, the rollers 20 push a piston push rod 15 to move to the rightmost end of a heat absorption straight flow channel 11, driving pistons 14 to move to the rightmost end of the heat absorption straight flow channel 11 and compressing a piston return spring 16, and achieving the effect of cooling liquid to circularly flow among the heat absorption straight flow channel 11, a heat absorption auxiliary flow channel 13 and a cooling pipe 12.
The cleaning mechanism comprises a plurality of circumferentially arranged brush rods 30 fixed at one end of an impeller 21 and positioned at the edge, one sides of the plurality of brush rods 30 are respectively provided with a brush 31, the impeller 21 drives the brush rods 30 to rotate, twelve electric control stop valves 19 are controlled to be closed, at the moment, cooling liquid in the plurality of radiating pipes 12, the heat absorption straight flow channels 11 and the heat absorption auxiliary flow channels 13 cannot flow, at the moment, the positions of pistons 14 and piston push rods 15 cannot be fixed to move left and right, a main shaft 4 continues to drive a cam disk 9 and a counterweight cam disk 10 to rotate, the counterweight cam disk 10 is subjected to leftward thrust of a plurality of rollers 20 when rotating, the cam disk 9 and the counterweight cam disk 10 move left to press a positioning lug 35 into the inner side of a spring cavity 32 and compress a jacking spring 34, at the moment, the cam disk 9 and the counterweight cam disk 10 can move left to push the impeller 21 to move left, the impeller 21 compresses an impeller return spring 24, and the brush 31 at one side of the impeller is stuck to one side of a filter screen 29, so that dust at one side of the filter screen 29 can be scraped.
The motor casing 1 is fixed with the protection casing 26 as shown in fig. 4 in the outside position of one end, the air intake 27 has been seted up to the one end position that is located the border position of protection casing 26, filter screen 29 has all been pasted to the inboard position that corresponds air intake 27 of protection casing 26, the other end position that corresponds cooling tube 12 of protection casing 26 all inserts and is equipped with tuber pipe 37, the one end of tuber pipe 37 all is fixed with the shrink piece 38 as shown in fig. 9, tuber pipe 37 is used for the exhaust air, shrink piece 38 makes the exhaust air velocity of flow accelerate, and then improve air flow efficiency, the radiating efficiency has been improved, simultaneously the air that partly flows fast can get into ventilation groove 39 inboard, improve the heat transfer degree of air and fin 42, increase the cooling effect.
The clamping unit comprises a spring cavity 32 arranged on one side of the main shaft 4 and a positioning groove 36 arranged on the inner side of the cam disc 9 and corresponding to the position of the spring cavity 32, a sliding plate 33 is slidably connected on the inner side of the spring cavity 32, one end of the sliding plate 33 is connected with a jacking spring 34 shown in fig. 7, one end of the jacking spring 34 is connected with one end of the inner side of the spring cavity 32, the other end of the sliding plate 33 is fixedly provided with a positioning lug 35 extending to the outer side of the main shaft 4, and the clamping unit is used for axially positioning the cam disc 9 and the counterweight cam disc 10.
One end of the positioning lug 35 and the inner side of the positioning groove 36 are in spherical structures, one end of the positioning lug 35 is matched with the inner side of the positioning groove 36, and when the spherical structures are subjected to transverse pressure, the positioning lug 35 can move downwards, so that the cam disk 9 and the counterweight cam disk 10 move outside the main shaft 4, the impeller 21 can be moved leftwards to push the impeller 21 to move leftwards, the impeller 21 compresses the impeller return spring 24, the hairbrush 31 on one side of the impeller is attached to one side of the filter screen 29, at the moment, the impeller 21 rotates to drive the hairbrush 31 to rotate, and the hairbrush 31 scrapes dust on the surface of the filter screen 29, so that an automatic ash cleaning effect is achieved.
The air outlet pipe 37 is in a cross-shaped structure, so that the discharged air just blows to the radiating fins 42, and the blown air can be fully utilized, so that the targeted cooling is realized.
The cam disk 9 and the counterweight cam disk 10 are symmetrically arranged, so that inertia generated by rotation can be counteracted, the motor is prevented from swinging, and the running stability of the motor is improved.
The working principle of the invention is as follows:
When the motor runs, the main shaft 4 rotates, the main shaft 4 drives the cam disk 9 and the counterweight cam disk 10 at one end of the main shaft to rotate, the cam disk 9 drives the piston push rods 15 to reciprocate respectively through rolling connection with the rollers 20 when rotating, the conduction direction of the first one-way valve 17 is rightward, the conduction direction of the second one-way valve 18 is leftward, when the convex side of the cam disk 9 contacts with one roller 20, the roller 20 pushes the piston push rod 15 to move to the rightmost end of the heat absorption straight channel 11, thereby driving the piston 14 to move to the rightmost end of the heat absorption straight channel 11 and compressing the piston return spring 16, the piston 14 presses the cooling liquid at the right end of the heat absorption straight channel 11 into the inner side of the heat dissipation tube 12, at the moment, the left end space of the heat absorption straight channel 11 is enlarged, the original cooling liquid at the inner side of the heat dissipation tube 12 flows to the left end space of the heat absorption straight channel 11, and after the convex side of the cam disk 9 is separated from the roller 20, the piston return spring 16 releases elastic force to push the piston 14 and the piston push rod 15 to move reversely, the piston 14 moves towards the left end of the heat absorption straight flow channel 11, the cooling liquid at the left end of the heat absorption straight flow channel 11 is pressed into the left end space of the heat absorption auxiliary flow channel 13, the cooling liquid flows into the right end space of the heat absorption auxiliary flow channel 13 through the first one-way valve 17 and then flows into the right end space of the heat absorption straight flow channel 11, when the piston 14 moves right next time, the cooling liquid can absorb the heat of the stator iron core 7 when flowing inside the heat absorption straight flow channel 11 and the heat absorption auxiliary flow channel 13, the cooling liquid is circulated to the inside of the heat dissipation pipe 12 after absorbing the heat, the heat is dissipated to the heat dissipation pipe 12 and the heat dissipation fin 42, thereby playing a good cooling role, reducing the heat productivity of the motor under the long-time large-load use working condition, improving the running stability of the motor, the service life of the motor is prolonged, the main shaft 4 rotates and drives the impeller 21 at one end to rotate, the impeller 21 drives the blades 22 at the outer side to rotate, the blades 22 rotate to suck external cold air into the inner side of the protective cover 26 through the air inlet 27, the air flows out through the air outlet pipe 37 and flows through the radiating pipe 12 and the radiating fins 42 after flowing out through the air outlet pipe 37, hot air outside the radiating pipe 12 and the radiating fins 42 can be blown away, the cooling effect is improved, two filter screens 29 at two ends of the inner side of the protective cover 26 can filter dust in the air, after one side of the filter screen 29 is fully stained with dust, the dust on the surface of the filter screen 29 needs to be cleaned, twelve electric control stop valves 19 are controlled to be closed, and at the moment, the radiating pipes 12, A heat absorbing straight flow channel 11, The cooling liquid in the heat absorbing auxiliary flow channel 13 can not flow, at this moment, the positions of the piston 14 and the piston push rod 15 can not be fixed and moved left and right, and the main shaft 4 continues to drive the cam disk 9 and the counterweight cam disk 10 to rotate, the counterweight cam disk 10 receives the left thrust of the plurality of rollers 20 when rotating, the cam disk 9 and the counterweight cam disk 10 move left to press the positioning lug 35 into the inner side of the spring cavity 32 and compress the jacking spring 34, at this moment, the cam disk 9 and the counterweight cam disk 10 can move left to push the impeller 21, the impeller 21 compresses the impeller return spring 24, and the brush 31 on one side is attached to one side of the filter screen 29, at this moment, the impeller 21 rotates to drive the brush 31 to rotate, the brush 31 scrapes dust on the surface of the filter screen 29, the effect of automatic ash removal is achieved, the shield 26 is not required to be disassembled for ash removal, the convenience in use is improved, twelve electrically controlled stop valves 19 are opened after cleaning is completed, at this moment, the radiating pipe 12 is moved left to push the impeller 21 to move the impeller return spring 24 is compressed, and one side is attached to one side of the filter screen 29 is attached to one side, at this moment, the radiating pipe 12 is cleaned, and after the cleaning is finished The cooling liquid inside the heat absorption straight flow channel 11 and the heat absorption auxiliary flow channel 13 can flow, the impeller return spring 24 releases elasticity to push the impeller 21, the cam disc 9 and the counterweight cam disc 10 to move rightwards, so that the positioning grooves 36 inside the cam disc 9 and the counterweight cam disc 10 are aligned with the positioning convex blocks 35, the jacking spring 34 releases elasticity to push the positioning convex blocks 35 to move upwards to be clamped with the positioning grooves 36, and the cam disc 9 and the counterweight cam disc 10 can be axially fixed on the outer side of the main shaft 4, and at the moment, the plurality of rollers 20 can be attached to one side of the cam disc 9.
The invention has the following advantages:
The main shaft 4 drives the cam disc 9 to rotate, the cam disc rotates to drive the piston push rods 15 to reciprocate, so that the pistons 14 are driven to reciprocate, the pistons can respectively drive the cooling liquid on the inner sides of the heat absorption straight flow channels 11, the heat absorption auxiliary flow channels 13 and the heat dissipation tubes 12 to circularly flow, the cooling liquid can absorb heat in the heat dissipation blocks 6 and the stator iron cores 7 when flowing on the inner sides of the heat absorption straight flow channels and the heat absorption auxiliary flow channels, and the cooling liquid can release heat when flowing on the inner sides of the heat dissipation tubes 12.
Secondly, when one side of the filter screen 29 is full of dust, the dust on the surface of the filter screen needs to be cleaned, twelve electric control stop valves 19 are controlled to be closed, at this time, cooling liquid in the plurality of radiating pipes 12, the heat absorption straight flow channels 11 and the heat absorption auxiliary flow channels 13 cannot flow, at this time, the positions of the pistons 14 and the piston push rods 15 cannot be fixed and moved left and right, the main shaft 4 continues to drive the cam disk 9 and the counterweight cam disk 10 to rotate, the counterweight cam disk is subjected to leftward thrust force of the plurality of rollers 20 when rotating, the cam disk and the counterweight cam disk move left to press the positioning lug 35 into the inner side of the spring cavity 32 and compress the jacking spring 34, at this time, the cam disk and the counterweight cam disk can move left to push the impeller 21 to move left, the impeller compresses the impeller return spring 24, and the brush 31 on one side of the impeller is attached to one side of the filter screen 29, at this time, the impeller rotates to drive the brush to scrape dust on the surface of the filter screen, an automatic ash removing function is achieved, the protection cover 26 does not need to be dismounted to clean, and the convenience in use is improved.
The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The brushless motor is characterized by comprising a motor casing (1), wherein an end cover (2) is arranged at one end of the motor casing (1), a main shaft bearing (3) is arranged at one end of the motor casing (1) and inside the end cover (2) in a penetrating mode, a main shaft (4) is connected to the inner sides of the main shaft bearings (3) in a penetrating and rotating mode, a permanent magnet rotor (5) is arranged at the inner side position of the motor casing (1) on the outer side of the main shaft (4), a plurality of stator iron cores (7) are further arranged, stator windings (8) are sleeved on the outer side of each stator iron core (7), a water cooling component and an air cooling component are arranged inside the motor casing (1), a driving mechanism is arranged between the water cooling component and the air cooling component, the water cooling component comprises a waterway unit, a radiating block (6) with the same number as that of the stator iron cores (7) and a radiating pipe (12) with the same number as that of the stator iron cores (7) are arranged in a penetrating mode, the plurality of radiating blocks (6) are fixedly connected with the stator iron cores (7), a plurality of radiating channels (11) are respectively arranged on one side of the radiating blocks (6) and a plurality of radiating channels (11) are respectively arranged on the inner sides of the radiating blocks (11) in a plurality of straight channels and are respectively connected with the radiating channels (11), both ends of the heat absorption auxiliary flow channels (13) are respectively communicated with the inner sides of the heat absorption straight flow channels (11);
The heat dissipation unit comprises heat dissipation fins (42) fixed on the outer sides of the plurality of heat dissipation pipes (12), ventilation grooves (39) are formed in the heat dissipation fins (42), pistons (14) are connected to the inner sides of the plurality of heat absorption straight channels (11) in a sliding mode, the propulsion unit comprises piston push rods (15) fixed on the other ends of the plurality of pistons (14), and rollers (20) are connected to one ends of the plurality of piston push rods (15) in a rotating mode;
The driving mechanism comprises a cam disc (9) sleeved on one end of the outer side of the main shaft (4) in a sliding manner and a counterweight cam disc (10) sleeved on one end of the cam disc (9) on the outer side of the main shaft (4), wherein clamping units with the same structure are respectively arranged between the cam disc (9) and the counterweight cam disc (10) and the main shaft (4);
The inner sides of the radiating pipes (12) are provided with second one-way valves (18) at the middle section positions, the inner sides of the heat absorption auxiliary flow channels (13) are provided with first one-way valves (17) at the middle section positions, and the inner sides of the radiating pipes (12) and the heat absorption auxiliary flow channels (13) are provided with electric control stop valves (19) at one end positions;
One end of each of the pistons (14) is connected with a piston return spring (16), and one end of each of the piston return springs (16) is connected with one end of each of the heat absorption straight flow channels (11).
2. The brushless motor of claim 1, wherein the air cooling assembly comprises a first limiting ring (23) fixed at one end of the outer side of the main shaft (4), an impeller (21) slidably sleeved on the outer side of the main shaft (4) and positioned at one end of the first limiting ring (23), and a second limiting ring (25) fixed at one end of the main shaft (4) and positioned at one end of the impeller (21), one end of the second limiting ring (25) is connected with an impeller return spring (24) sleeved on the outer side of the main shaft (4), and one end of the impeller return spring (24) is propped against one end of the impeller (21).
3. The brushless motor of claim 2, wherein a cleaning mechanism is provided at one end of the impeller (21), the cleaning mechanism comprises a plurality of circumferentially arranged brush bars (30) fixed at one end of the impeller (21) at the edge position, and brushes (31) are provided at one sides of the plurality of brush bars (30).
4. The brushless motor of claim 1, wherein the clamping unit comprises a spring cavity (32) arranged on one side of the main shaft (4) and a positioning groove (36) arranged on the inner side of the cam disc (9) and corresponding to the position of the spring cavity (32), a sliding plate (33) is slidably connected on the inner side of the spring cavity (32), one end of the sliding plate (33) is connected with a lifting spring (34), one end of the lifting spring (34) is connected with one end of the inner part of the spring cavity (32), and a positioning lug (35) extending to the outer part of the main shaft (4) is fixed on the other end of the sliding plate (33).
5. The brushless motor as claimed in claim 4, wherein one end of the positioning projection (35) and an inner side of the positioning groove (36) are both in a spherical structure, and one end of the positioning projection (35) is adapted to the inner side of the positioning groove (36).
6. The brushless motor of claim 1, wherein a protective cover (26) is fixed on the outer side of the motor casing (1) at one end, an air inlet (27) is formed in the edge position of one end of the protective cover (26), a filter screen (29) is adhered to the inner side of the protective cover (26) at the position corresponding to the air inlet (27), an air outlet pipe (37) is inserted into the other end of the protective cover (26) at the position corresponding to the radiating pipe (12), and a contraction piece (38) is fixed on one end of the air outlet pipe (37).
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| CN116404810B (en) * | 2023-02-20 | 2024-01-12 | 深圳艾史比特电机有限公司 | Permanent magnet brushless motor structure and method based on water pump |
| CN117013763B (en) * | 2023-08-10 | 2024-08-30 | 上海济鼎实业有限公司 | DC brushless motor with built-in heat dissipation mechanism |
| CN118763851B (en) * | 2024-08-29 | 2024-11-15 | 深圳市科创兴电机科技有限公司 | Quick heat radiation structure for brushless motor |
| CN118793608B (en) * | 2024-09-10 | 2025-02-14 | 山东新宇科技发展有限公司 | A hydraulic booster pump for ground source heating |
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| CN217642954U (en) * | 2022-07-19 | 2022-10-21 | 龙泉市中泰汽车空调有限公司 | A brushless motor |
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| GB2384530B (en) * | 2002-01-28 | 2004-12-22 | Visteon Global Tech Inc | Single piston dual chamber fuel pump |
| JP2007215311A (en) * | 2006-02-09 | 2007-08-23 | Nissan Motor Co Ltd | In-wheel motor cooling device, its cooling method, and vehicle with the cooling device |
| CN112039289B (en) * | 2020-08-25 | 2021-12-21 | 宁波凯元电器有限公司 | Motor with good heat dissipation effect and heat dissipation method thereof |
| CN112398035A (en) * | 2020-11-27 | 2021-02-23 | 李五洲 | Liquid cooling heat abstractor for switch board that can keep microthermal |
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| CN217642954U (en) * | 2022-07-19 | 2022-10-21 | 龙泉市中泰汽车空调有限公司 | A brushless motor |
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