Brushless Motor

Abstract

The present invention relates to the field of motor technology, and specifically discloses a brushless motor, comprising a motor housing, an end cover is installed at one end of the motor housing, a main shaft bearing is installed through one end of the motor housing and the inside of the end cover, the inside of the main shaft bearing is rotatably connected with the main shaft, and a permanent magnet rotor is installed on the outside of the main shaft; comprising a plurality of stator cores, each of which is sleeved with a stator winding on the outside; a water cooling component and an air cooling component are arranged inside the motor housing, and a driving mechanism is arranged between the water cooling component and the air cooling component; the water cooling component comprises a water channel unit, a heat dissipation unit and a propulsion unit; the water channel unit comprises a heat dissipation block and a heat dissipation pipe, a heat absorption direct flow channel is opened on one side of the inside of the plurality of heat dissipation blocks, a heat absorption secondary flow channel is opened inside the heat dissipation block, and both ends of the plurality of heat absorption secondary flow channels are respectively connected to the inside of the plurality of heat absorption direct flow channels. The present invention has the characteristics of good cooling effect, good operation stability and long service life.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a brushless motor. Background Art

[0002] The brushless DC motor consists of a motor body and a driver, and is a typical mechatronics product. Since the brushless DC motor is operated in an automatic manner, it does not require an additional starting winding on the rotor like a synchronous motor that starts under heavy load under variable frequency speed regulation, nor does it produce oscillation and loss of step when the load changes suddenly.

[0003] The document with patent publication number "CN105356644B" discloses a brushless motor, including a stator and a rotor, wherein the stator includes two end covers and a bearing fixed to the outside of each end cover, and the rotor includes a rotating shaft, the rotating shaft passes through the bearing, and the bearing rotatably supports the rotating shaft; the brushless motor is small in size and easy to assemble; when the motor is connected to a gear box, the connecting housing of the gear box can be positioned through the axial end of the bearing, thereby maintaining the same positioning reference of the gear box and the motor. Based on the above search, combined with the prior art, it is found that the existing brushless motors are usually air-cooled, and the heat dissipation effect is not good. After long-term operation under high load, the motor's winding coils and stator core generate a lot of heat. Long-term high-temperature operation reduces the motor's operating stability and also shortens the motor's service life. Summary of the invention

[0004] In order to solve the above technical problems existing in the existing brushless motors, the present invention provides a brushless motor with good cooling effect, good operating stability and long service life.

[0005] The technical solution of the present invention is as follows: a brushless motor comprises a motor housing, one end of the motor housing is installed with an end cover, one end of the motor housing and the inside of the end cover are penetrated by a main shaft bearing, the inner sides of the two main shaft bearings are penetrated by a main shaft rotatably connected, and the outer side of the main shaft is located at the inner side of the motor housing and a permanent magnet rotor is installed; it also includes a plurality of stator cores, each of which is sleeved with a stator winding; a water cooling component and an air cooling component are arranged inside the motor housing, and a driving component is arranged between the water cooling component and the air cooling component. Mechanism; the water cooling component includes a water circuit unit, a heat dissipation unit and a propulsion unit; the water circuit unit includes a heat dissipation block having the same number as the stator core and a heat dissipation pipe having the same number as the stator core, a plurality of the heat dissipation blocks are fixedly connected to the stator core, a heat absorption direct flow channel is provided on one side of the interior of the plurality of heat dissipation blocks, a heat absorption secondary flow channel is provided on the other side of the interior of the plurality of heat dissipation blocks, both ends of the plurality of heat dissipation pipes are respectively connected to the inner sides of the plurality of heat absorption direct flow channels, and both ends of the plurality of heat absorption secondary flow channels are respectively connected to the inner sides of the plurality of heat absorption direct flow channels. The present invention drives the driving mechanism to move through the main shaft, and the driving mechanism drives the water cooling component to work, thereby driving the cooling liquid inside the multiple heat absorption direct flow channels, the multiple heat absorption secondary flow channels and the multiple heat dissipation pipes to circulate respectively. When the cooling liquid flows inside the heat absorption direct flow channel and the heat absorption secondary flow channel, it can absorb the heat inside the heat dissipation block and the stator core, and when the cooling liquid flows to the inside of the heat dissipation pipe, it can release the heat. Compared with the existing air-cooled heat dissipation, the heat dissipation method of the present invention has better cooling effect, can reduce the heat generation of the motor under long-term high-load use conditions, improves the operating stability of the motor, and prolongs the service life of the motor; the air-cooled component in the present invention is used to blow air to one side of the heat dissipation pipe, accelerates the air flow near it, assists the water cooling component to work, and better improves the heat dissipation efficiency; the driving mechanism in the present invention is used to drive the propulsion unit to move back and forth, so that the cooling liquid circulates in the water channel unit, realizes the circulation of the cooling liquid between the heat absorption direct flow channel, the heat absorption secondary flow channel and the heat dissipation pipe, and achieves the cooling effect.

[0006] Preferably, the heat dissipation unit includes heat sinks fixed to the outside of a plurality of heat dissipation tubes, and ventilation grooves are provided inside the heat sinks; the inner sides of the plurality of heat absorption direct current channels are slidably connected with pistons; the propulsion unit includes piston push rods fixed to the other ends of the plurality of pistons, and one ends of the plurality of piston push rods are rotatably connected with rollers. The ventilation grooves can increase the contact area between the heat sink and the air, which is conducive to the rapid dissipation of heat; part of the fast-flowing air can enter the inner side of the ventilation grooves, improve the heat exchange between the air and the heat sink, and increase the cooling effect; when the raised side of the cam disc in the driving mechanism contacts one of the rollers, the roller pushes the piston push rod to move to the rightmost end of the heat absorption direct current channel, thereby driving the piston to move to the rightmost end of the heat absorption direct current channel, and at the same time compressing the piston return spring, the piston pushes the cooling fluid at the right end of the heat absorption direct current channel into the inner side of the heat dissipation tube, and at this time the left end of the heat absorption direct current channel is empty. The space between the two ends increases, and the original coolant on the inside of the heat dissipation pipe flows to the left end space of the heat absorption direct flow channel. When the raised side of the cam plate in the driving mechanism is separated from the roller, the piston return spring releases the elastic force to push the piston and the piston push rod to move in the opposite direction. The piston moves to the left end of the heat absorption direct flow channel, and the coolant on the left end of the heat absorption direct flow channel is injected into the left end space of the heat absorption secondary flow channel. The coolant flows to the right end space of the heat absorption secondary flow channel, and then flows into the right end space of the heat absorption direct flow channel. When the piston moves to the right next time, the next cycle can be carried out, which has a good cooling effect.

[0007] Preferably, the air cooling assembly includes a first limiting ring fixed to one end of the outer side of the main shaft, an impeller slidably mounted on the outer side of the main shaft at one end of the first limiting ring, and a second limiting ring fixed to one end of the main shaft at one end of the impeller, one end of the second limiting ring is connected to an impeller reset spring mounted on the outer side of the main shaft, and one end of the impeller reset spring abuts against one end of the impeller. The first limiting ring and the second limiting ring can well limit the impeller so that the impeller only slides back and forth on the main shaft, and the impeller reset spring is used to achieve good reset of the impeller. When the cam disc and the counterweight cam disc in the driving mechanism move to the left to push the impeller to move left, the impeller compresses the impeller reset spring, and the brush of the cleaning mechanism on one side of the impeller can be attached to one side of the filter screen. At this time, the rotation of the impeller drives the brush to rotate, and the brush scrapes the dust on the surface of the filter screen, which plays the role of automatic dust cleaning. There is no need to remove the protective cover for dust cleaning, which improves the convenience of use.

[0008] Preferably, a cleaning mechanism is provided at one end of the impeller; the cleaning mechanism comprises a plurality of brush rods arranged in a circumference and fixed at one end of the impeller at an edge position, and a brush is provided on one side of each of the plurality of brush rods. The impeller drives the brush rod to rotate so that the brush is attached to one side of the filter screen, thereby scraping off dust on one side of the filter screen.

[0009] Preferably, the driving mechanism comprises a cam disc slidably mounted on one end of the outer side of the main shaft and a counterweight cam disc slidably mounted on the outer side of the main shaft at one end of the cam disc, and the cam disc and the counterweight cam disc are respectively provided with a clamping unit with the same structure with the main shaft. The clamping unit can well realize the axial positioning of the cam disc and the counterweight cam disc on the main shaft; the driving mechanism is used to drive the roller to move back and forth, and then drive the piston to move back and forth, so that the coolant circulates in the water channel unit, specifically, when the raised side of the cam disc contacts one of the rollers, the roller pushes the piston push rod to move to the rightmost end of the heat absorption direct flow channel, thereby driving the piston to move to the rightmost end of the heat absorption direct flow channel, and compressing the piston return spring at the same time, so that the coolant circulates between the heat absorption direct flow channel, the heat absorption secondary flow channel and the heat dissipation pipe, so as to achieve a cooling effect.

[0010] Preferably, the clamping unit includes a spring cavity provided on one side of the main shaft and a positioning groove provided on the inner side of the cam disc at a position corresponding to the spring cavity. A slide plate is slidably connected to the inner side of the spring cavity. One end of the slide plate is connected to a lifting spring. One end of the lifting spring is connected to one end of the inner side of the spring cavity. A positioning protrusion extending to the outer side of the main shaft is fixed to the other end of the slide plate. The spring cavity provides a good activity space for the slide plate and the lifting spring to ensure the stability of the movement. The elastic force of the lifting spring realizes the positioning between the positioning protrusion and the positioning groove, thereby well positioning the cam disc and the counterweight cam disc axially.

[0011] Preferably, one end of the positioning protrusion and the inner side of the positioning groove are both spherical structures, and one end of the positioning protrusion is adapted to the inner side of the positioning groove. When subjected to lateral pressure, the spherical structure can move the positioning protrusion downward, so that the cam plate and the counterweight cam plate move outside the main shaft, and can move to the left to push the impeller to move left. The impeller compresses the impeller return spring and sticks the brush on one side of the impeller to one side of the filter screen. At this time, the impeller rotates to drive the brush to rotate, and the brush scrapes the dust on the surface of the filter screen, playing the role of automatic dust cleaning.

[0012] Preferably, a second one-way valve is installed at the middle section of the inner side of each of the plurality of heat dissipation pipes. The second one-way valve can flexibly control the flow of the coolant in the heat dissipation pipe as required.

[0013] Preferably, a first one-way valve is installed at the middle position of the inner side of each of the plurality of heat absorption secondary flow channels. The first one-way valve can well control the flow rate of the coolant in the heat absorption secondary flow channel.

[0014] Preferably, an electric control stop valve is installed at one end of the inner side of the plurality of heat dissipation pipes and the plurality of heat absorption secondary flow channels, and the electric control stop valve can stop the flow of the coolant inside the heat dissipation pipes, the heat absorption direct flow channel and the heat absorption secondary flow channel as required.

[0015] Preferably, one end of each of the plurality of pistons is connected to a piston return spring, and one end of each of the plurality of piston return springs is respectively connected to one end of each of the plurality of heat absorbing direct current channels. The piston return spring can well realize the reset of the piston, thereby realizing the work of the piston pressing the coolant from the heat absorbing direct current channel into the heat dissipation pipe.

[0016] Preferably, a protective cover is fixed at one end of the outer side of the motor housing, an air inlet is opened at the edge of one end of the protective cover, a filter is pasted at the position corresponding to the air inlet on the inner side of the protective cover, an air outlet is inserted at the position corresponding to the heat dissipation pipe at the other end of the protective cover, and a shrink piece is fixed at one end of the air outlet. The protective cover and the filter can effectively prevent dust from entering the motor housing; the air outlet is used to discharge air, and the shrink piece speeds up the discharged air flow rate, thereby improving the air flow efficiency and the heat dissipation efficiency.

[0017] Preferably, blades arranged in a circle are fixed on the outer side of the impeller. The blades arranged in a circle can better blow air toward one side of the heat dissipation pipe, speed up the air flow near the heat dissipation pipe, and better improve the heat dissipation efficiency.

[0018] Preferably, the air outlet pipe is in a cross-shaped structure. The air outlet pipe in the cross-shaped structure allows the exhausted air to blow directly toward the heat sink, making full use of the blown air to achieve targeted cooling.

[0019] Preferably, the cam plate and the counterweight cam plate are arranged symmetrically, which can offset the inertia generated by the rotation, prevent the motor from swinging, and improve the running stability of the motor.

[0020] The present invention has the following beneficial effects:

[0021] (1) The main shaft drives the driving mechanism to move, and the driving mechanism drives the water cooling component to work, thereby driving the cooling liquid inside the multiple heat-absorbing direct flow channels, multiple heat-absorbing secondary flow channels and multiple heat-dissipating pipes to circulate. When the cooling liquid flows inside the heat-absorbing direct flow channels and the heat-absorbing secondary flow channels, it can absorb the heat inside the heat dissipation block and the stator core. When the cooling liquid flows to the inside of the heat dissipation pipe, it can release the heat. Compared with the existing air-cooled heat dissipation, the heat dissipation method in the present invention has a better cooling effect, can reduce the heat generated by the motor under long-term high-load use conditions, improve the running stability of the motor, and extend the service life of the motor;

[0022] (2) The air cooling component is used to blow air to one side of the heat dissipation pipe to speed up the air flow near it, assist the water cooling component in working, and better improve the heat dissipation efficiency;

[0023] (3) The driving mechanism is used to drive the propulsion unit to move back and forth, so that the coolant circulates in the water channel unit, and the coolant circulates between the heat absorption direct flow channel, the heat absorption secondary flow channel and the heat dissipation pipe to achieve a cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0025] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the present invention in a cross-section from a first viewing angle;

[0027] Figure 4 It is a schematic diagram of the structure of the present invention from a second viewing angle;

[0028] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 6 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle;

[0030] Figure 7 It is a structural schematic diagram of the axial clamping mechanism of the present invention;

[0031] Figure 8 is a schematic cross-sectional structural diagram of the heat sink of the present invention;

[0032] Fig. 9 For the present invention Figure 1 Schematic diagram of the enlarged cross-sectional structure at point C in the middle.

[0033] The symbols in the accompanying drawings are:

[0034] 1-motor housing; 2-end cover; 3-spindle bearing; 4-spindle; 5-permanent magnet rotor; 6-heat sink; 7-stator core; 8-stator winding; 9-cam plate; 10-counterweight cam plate; 11-heat absorbing direct flow channel; 12-heat dissipation pipe; 13-heat absorbing secondary flow channel; 14-piston; 15-piston push rod; 16-piston return spring; 17-first one-way valve; 18-second one-way valve; 19-electrically controlled stop valve; 20-roller; 21-impeller; 22-blade; 23-first limiting ring; 24-impeller return spring; 25-second limiting ring; 26-protective cover; 27-air inlet; 29-filter; 30-brush rod; 31-brush; 32-spring chamber; 33-slide plate; 34-lifting spring; 35-positioning protrusion; 36-positioning groove; 37-air outlet pipe; 38-contraction plate; 39-ventilation groove; 42-heat sink. DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the embodiments and drawings, but they are not intended to limit the present invention.

[0036] like Figure 1 and Figure 2 The brushless motor shown comprises a motor housing 1, an end cover 2 is installed at one end of the motor housing 1, and a main shaft bearing 3 is installed through one end of the motor housing 1 and the inside of the end cover 2, a main shaft 4 is rotatably connected to the inner side of the two main shaft bearings 3, a permanent magnet rotor 5 is installed on the outer side of the main shaft 4 at the inner side of the motor housing 1, and also comprises a plurality of stator cores 7, a stator winding 8 is sleeved and installed on the outer side of each stator core 7, a water cooling component and an air cooling component are arranged inside the motor housing 1, and a driving mechanism is arranged between the water cooling component and the air cooling component, the water cooling component comprises a water channel unit, a heat dissipation unit and a propulsion unit, the water channel unit comprises a heat dissipation block 6 having the same number as the stator core 7, a heat dissipation pipe 12 having the same number as the stator core 7, a plurality of heat dissipation blocks 6 are fixedly connected to the stator core 7, and an internal side of the plurality of heat dissipation blocks 6 is provided with an absorption A heat absorbing direct flow channel 11, a heat absorbing secondary flow channel 13 is provided on the other side of the interior of the plurality of heat dissipation blocks 6, a second one-way valve 18 is installed at the middle position of the inner side of the plurality of heat dissipation pipes 12, both ends of the plurality of heat dissipation pipes 12 are respectively connected to the inner side of the plurality of heat absorbing direct flow channels 11, a first one-way valve 17 is installed at the middle position of the inner side of the plurality of heat absorbing secondary flow channels 13, and both ends of the plurality of heat absorbing secondary flow channels 13 are respectively connected to the inner side of the plurality of heat absorbing direct flow channels 11, a piston 14 is slidably connected to the inner side of the plurality of heat absorbing direct flow channels 11, an electric control stop valve 19 is installed at one end position of the inner side of the plurality of heat dissipation pipes 12 and the plurality of heat absorbing secondary flow channels 13, a propulsion unit is fixed to a piston push rod 15 at the other end of the plurality of pistons 14, one end of the plurality of piston push rods 15 is rotatably connected to a roller 20, and one end of the plurality of pistons 14 is connected as Figure 5The piston return spring 16 shown in the figure, one end of each of the multiple piston return springs 16 is connected to one end of each of the multiple heat absorption direct current channels 11, when the raised side of the cam plate 9 contacts one of the rollers 20, the roller 20 pushes the piston push rod 15 to move to the rightmost end of the heat absorption direct current channel 11, thereby driving the piston 14 to move to the rightmost end of the heat absorption direct current channel 11 and compressing the piston return spring 16 at the same time, the piston 14 presses the cooling fluid at the right end of the heat absorption direct current channel 11 into the inner side of the heat dissipation pipe 12, at this time, the space at the left end of the heat absorption direct current channel 11 increases, and the original coolant inside the heat dissipation pipe 12 flows to the space at the left end of the heat absorption direct current channel 11, when the raised side of the cam plate 9 is separated from the roller 20, the piston return spring 16 releases the elastic force to push the piston 14 and the piston push rod 15 back The piston 14 moves to the left end of the heat absorption direct current channel 11, and the cooling liquid at the left end of the heat absorption direct current channel 11 is injected into the left end space of the heat absorption secondary flow channel 13. The cooling liquid flows to the right end space of the heat absorption secondary flow channel 13 through the first one-way valve 17, and then flows into the right end space of the heat absorption direct current channel 11. When the piston 14 moves to the right next time, the next cycle can be carried out. When the cooling liquid flows inside the heat absorption direct current channel 11 and the heat absorption secondary flow channel 13, it can absorb the heat of the stator core 7, and circulates to the inner side of the heat dissipation pipe 12 after absorbing the heat, and dissipates the heat to the heat dissipation pipe 12 and the heat sink 42, thereby playing a good cooling effect, reducing the heat generation of the motor under long-term high-load use conditions, improving the running stability of the motor, and extending the service life of the motor.

[0037] The air cooling assembly includes a first limiting ring 23 fixed to 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 at one end of the first limiting ring 23, and a second limiting ring 25 fixed to one end of the main shaft 4 at one end of the impeller 21. One end of the second limiting ring 25 is connected to a sleeved outer side of the main shaft 4. Figure 6 The impeller return spring 24 shown has one end that abuts against one end of the impeller 21, and blades 22 arranged in a circle are fixed to the outside of the impeller 21, and a cleaning mechanism is provided at one end of the impeller 21. The air cooling assembly is used to blow air toward one side of the heat dissipation pipe 12 to accelerate the air flow near it and improve the heat dissipation efficiency.

[0038] The heat dissipation unit includes a heat sink 42 fixed to the outside of a plurality of heat dissipation tubes 12, and the inside of the heat sink 42 is provided with Figure 8 The ventilation slots 39 shown can increase the contact area between the heat sink 42 and the air, which is beneficial for quickly dissipating heat.

[0039] The driving mechanism includes a cam plate 9 which is slidably mounted on one end of the outer side of the main shaft 4, and a cam plate 9 which is slidably mounted on the outer side of the main shaft 4 and located at one end of the cam plate 9. Figure 3The counterweight cam plate 10 shown, the cam plate 9 and the counterweight cam plate 10 are respectively provided with a clamping unit with the same structure with the main shaft 4, and the driving mechanism is used to drive the roller 20 to move back and forth, and then drive the piston 14 to move back and forth, so that the coolant circulates in the water channel unit. Specifically, when the raised side of the cam plate 9 contacts one of the rollers 20, the roller 20 pushes the piston push rod 15 to move to the rightmost end of the heat absorption direct flow channel 11, thereby driving the piston 14 to move to the rightmost end of the heat absorption direct flow channel 11 and compressing the piston return spring 16 at the same time, so that the coolant can circulate between the heat absorption direct flow channel 11, the heat absorption secondary flow channel 13, and the heat dissipation pipe 12, thereby achieving a cooling effect.

[0040] The cleaning mechanism includes a plurality of brush rods 30 arranged in a circle and fixed at one end of the impeller 21 at the edge position. A brush 31 is provided on one side of each of the plurality of brush rods 30. The impeller 21 drives the brush rods 30 to rotate and controls the twelve electrically controlled stop valves 19 to close at the same time. At this time, the coolant in the plurality of heat dissipation pipes 12, the heat absorption direct flow channel 11, and the heat absorption secondary flow channel 13 cannot flow. At this time, the positions of the piston 14 and the piston push rod 15 are fixed and cannot move left and right, and the main shaft 4 continues to drive the cam The disc 9 and the counterweight cam disc 10 rotate, and when the counterweight cam disc 10 rotates, it is pushed to the left by multiple rollers 20. The cam disc 9 and the counterweight cam disc 10 move to the left to press the positioning protrusion 35 into the inner side of the spring cavity 32 and compress the lifting spring 34. At this time, the cam disc 9 and the counterweight cam disc 10 can move to the left to push the impeller 21 to move left. The impeller 21 compresses the impeller return spring 24 and sticks the brush 31 on one side of the impeller to one side of the filter 29, so that the dust on one side of the filter 29 can be scraped off.

[0041] The outer side of the motor housing 1 is fixed at one end position as shown in FIG. Figure 4 The protective cover 26 shown in the figure has an air inlet 27 at one end of the protective cover 26 at the edge, a filter 29 is attached to the inner side of the protective cover 26 at the position corresponding to the air inlet 27, and an air outlet pipe 37 is inserted at the other end of the protective cover 26 at the position corresponding to the heat dissipation pipe 12, and one end of the air outlet pipe 37 is fixed as shown in the figure. Fig. 9 The shrinkage sheet 38 and the air outlet pipe 37 shown are used to exhaust air. The shrinkage sheet 38 speeds up the exhaust air flow rate, thereby improving the air flow efficiency and the heat dissipation efficiency. At the same time, part of the fast-flowing air can enter the inner side of the ventilation groove 39, thereby improving the heat exchange between the air and the heat sink 42 and increasing the cooling effect.

[0042] The clamping unit includes a spring cavity 32 opened on one side of the main shaft 4 and a positioning groove 36 opened on the inner side of the cam plate 9 at a position corresponding to the spring cavity 32. A slide plate 33 is slidably connected to the inner side of the spring cavity 32. One end of the slide plate 33 is connected to Figure 7The lifting spring 34 shown has one end connected to one end inside the spring chamber 32, and the other end of the slide plate 33 is fixed with a positioning protrusion 35 extending to the outside of the main shaft 4. The clamping unit is used to axially position the cam plate 9 and the counterweight cam plate 10.

[0043] One end of the positioning protrusion 35 and the inner side of the positioning groove 36 are both spherical structures, and one end of the positioning protrusion 35 is adapted to the inner side of the positioning groove 36. When the spherical structure is subjected to lateral pressure, the positioning protrusion 35 can move downward, so that the cam plate 9 and the counterweight cam plate 10 move outside the main shaft 4, and can move to the left to push the impeller 21 to move left. The impeller 21 compresses the impeller return spring 24 and sticks the brush 31 on one side of the impeller to one side of the filter 29. At this time, the rotation of the impeller 21 drives the brush 31 to rotate, and the brush 31 scrapes the dust on the surface of the filter 29, thereby playing the role of automatic dust cleaning.

[0044] The air outlet pipe 37 is in a cross-shaped structure, so that the exhausted air is blown directly toward the heat sink 42, and the blown air can be fully utilized to achieve targeted cooling.

[0045] The cam plate 9 and the counterweight cam plate 10 are symmetrically arranged to offset the inertia generated by the rotation, prevent the motor from swinging, and improve the running stability of the motor.

[0046] The working principle of the present invention is:

[0047] When the motor is running, the main shaft 4 rotates, and the main shaft 4 drives the cam plate 9 and the counterweight cam plate 10 at one end thereof to rotate. When the cam plate 9 rotates, it drives the multiple piston push rods 15 to move back and forth respectively through the rolling connection between the multiple rollers 20. The conduction direction of the first one-way valve 17 is to the right, and the conduction direction of the second one-way valve 18 is to the left. When the raised side of the cam plate 9 contacts one of the rollers 20, the roller 20 pushes the piston push rod 15 to move to the rightmost end of the heat absorption direct current channel 11, thereby driving the piston 14 to move to the rightmost end of the heat absorption direct current channel 11 and compressing the piston return spring 16 at the same time. The piston 14 pushes the cooling fluid at the right end of the heat absorption direct current channel 11 into the inner side of the heat dissipation pipe 12. At this time, the space at the left end of the heat absorption direct current channel 11 is increased, and the original inner side of the heat dissipation pipe 12 The coolant flows to the left end space of the heat absorption direct flow channel 11. When the raised side of the cam plate 9 is separated from the roller 20, the piston return spring 16 releases its elastic force to push the piston 14 and the piston push rod 15 to move in the opposite direction. The piston 14 moves to the left end of the heat absorption direct flow channel 11, and injects the coolant at the left end of the heat absorption direct flow channel 11 into the left end space of the heat absorption secondary flow channel 13. The coolant flows to the right end space of the heat absorption secondary flow channel 13 through the first one-way valve 17, and then flows into the right end space of the heat absorption direct flow channel 11. When the piston 14 moves to the right next time, the next cycle can be carried out. When the coolant flows inside the heat absorption direct flow channel 11 and the heat absorption secondary flow channel 13, it can absorb the heat of the stator core 7. After absorbing the heat, it circulates to the inner side of the heat dissipation pipe 12 to dissipate the heat to the heat sink The heat pipe 12 and the heat sink 42 have a good cooling effect, which reduces the heat generated by the motor under long-term high-load use conditions, improves the running stability of the motor, and prolongs the service life of the motor. When the main shaft 4 rotates, it drives the impeller 21 at one end to rotate, and the impeller 21 drives the blades 22 on the outside to rotate. The rotation of the blades 22 sucks the external cold air into the inside of the protective cover 26 through the air inlet 27, and flows out through the air outlet 37. After the air flows out through the air outlet 37, it flows through the heat pipe 12 and the heat sink 42, and the hot air on the outside of the heat pipe 12 and the heat sink 42 can be blown away, thereby improving the cooling effect. The two filters 29 at both ends of the inner side of the protective cover 26 can filter dust in the air. When one side of the filter 29 is covered with dust, , it is necessary to clean the dust on the surface of the filter 29, and control the twelve electrically controlled stop valves 19 to be closed. At this time, the coolant inside the multiple heat dissipation pipes 12, the heat absorption direct flow channel 11, and the heat absorption secondary flow channel 13 cannot flow. At this time, the positions of the piston 14 and the piston push rod 15 are fixed and cannot move left and right, and the main shaft 4 continues to drive the cam plate 9 and the counterweight cam plate 10 to rotate. When the counterweight cam plate 10 rotates, it is pushed to the left by multiple rollers 20. The cam plate 9 and the counterweight cam plate 10 move to the left to press the positioning protrusion 35 into the inner side of the spring cavity 32 and compress the lifting spring 34. At this time, the cam plate 9 and the counterweight cam plate 10 can move to the left to push the impeller 21 to move left, and the impeller 21 compresses the impeller return spring 24, and the brush 31 on one side of it is attached to one side of the filter 29.At this time, the rotation of the impeller 21 drives the brush 31 to rotate, and the brush 31 scrapes the dust on the surface of the filter 29, which plays the role of automatic dust cleaning. There is no need to remove the protective cover 26 for dust cleaning, which improves the convenience of use. After cleaning, open the twelve electrically controlled stop valves 19. At this time, the coolant inside the heat pipe 12, the heat absorption direct flow channel 11, and the heat absorption secondary flow channel 13 can flow. The impeller reset spring 24 releases its elastic force, pushing the impeller 21, the cam plate 9, and the counterweight cam plate 10 to move right, so that the positioning grooves 36 on the inner sides of the cam plate 9 and the counterweight cam plate 10 are aligned with the positioning protrusions 35. The lifting spring 34 releases its elastic force to push the positioning protrusions 35 to move up and engage with the positioning grooves 36, so that the cam plate 9 and the counterweight cam plate 10 can be axially fixed to the outside of the main shaft 4. At this time, multiple rollers 20 can also fit with one side of the cam plate 9.

[0048] The present invention has the following advantages:

[0049] First, the cam plate 9 is driven to rotate by the main shaft 4, and the rotation of the cam plate can drive multiple piston push rods 15 to move back and forth, thereby driving multiple pistons 14 to move back and forth. The reciprocating movement of multiple pistons can respectively drive the coolant inside multiple heat-absorbing direct flow channels 11, multiple heat-absorbing secondary flow channels 13, and multiple heat-dissipating pipes 12 to circulate. When the coolant flows inside the heat-absorbing direct flow channel and the heat-absorbing secondary flow channel, it can absorb the heat inside the heat dissipation block 6 and the stator core 7. When the coolant flows to the inside of the heat dissipation pipe 12, it can release heat. Compared with the existing air-cooled heat dissipation, this heat dissipation method has a better cooling effect, reduces the heat generated by the motor under long-term high-load use conditions, improves the operating stability of the motor, and extends the service life of the motor.

[0050] Second, when one side of the filter 29 is covered with dust, it is necessary to clean the dust on the surface of the filter, and control the twelve electrically controlled stop valves 19 to be closed. At this time, the coolant inside the multiple heat dissipation pipes 12, the heat absorption direct flow channel 11, and the heat absorption secondary flow channel 13 cannot flow. At this time, the positions of the piston 14 and the piston push rod 15 are fixed and cannot move left and right, and the main shaft 4 continues to drive the cam plate 9 and the counterweight cam plate 10 to rotate. When the counterweight cam plate rotates, it is pushed to the left by multiple rollers 20. The cam plate and the counterweight cam plate move to the left to press the positioning protrusion 35 into the inner side of the spring cavity 32 and compress the lifting spring 34. At this time, the cam plate and the counterweight cam plate can move to the left to push the impeller 21 to move left, and the impeller compresses the impeller reset spring 24 and sticks the brush 31 on one side of the filter 29. At this time, the rotation of the impeller drives the brush to rotate, and the brush scrapes off the dust on the surface of the filter, which plays a role of automatic cleaning. There is no need to remove the protective cover 26 for cleaning, which improves the convenience of use.

[0051] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Brushless motor, which is characterized by: The invention comprises a motor housing (1), one end of which is provided with an end cover (2), one end of which is provided with a main shaft bearing (3), one end of which is provided with a main shaft bearing (3) and the inside of which is provided with a main shaft bearing (4), the inside of which is provided with a main shaft bearing (4) and is rotatably connected, and the outside of which is provided with a permanent magnet rotor (5) at a position inside the motor housing (1); and a plurality of stator cores (7), the outside of which is provided with a stator winding (8); a water cooling component and an air cooling component are provided inside the motor housing (1), a driving mechanism is provided between the water cooling component and the air cooling component; and the water cooling component It comprises a water channel unit, a heat dissipation unit and a propulsion unit; the water channel unit comprises a heat dissipation block (6) having the same number as the stator core (7) and a heat dissipation pipe (12) having the same number as the stator core (7); a plurality of the heat dissipation blocks (6) are fixedly connected to the stator core (7); a heat absorption direct flow channel (11) is provided on one side of the interior of the plurality of the heat dissipation blocks (6); a heat absorption secondary flow channel (13) is provided on the other side of the interior of the plurality of the heat dissipation blocks (6); both ends of the plurality of the heat dissipation pipes (12) are respectively connected to the inner sides of the plurality of the heat absorption direct flow channels (11); and both ends of the plurality of the heat absorption secondary flow channels (13) are respectively connected to the inner sides of the plurality of the heat absorption direct flow channels (11); The heat dissipation unit comprises a heat sink (42) fixed to the outside of a plurality of heat dissipation tubes (12), and a ventilation slot (39) is provided inside the heat sink (42); a piston (14) is slidably connected to the inside of the plurality of heat-absorbing direct current channels (11); the propulsion unit comprises a piston push rod (15) fixed to the other end of the plurality of pistons (14), and one end of the plurality of piston push rods (15) is rotatably connected to a roller (20); The driving mechanism comprises a cam plate (9) slidably sleeved on one end of the outer side of the main shaft (4) and a counterweight cam plate (10) slidably sleeved on the outer side of the main shaft (4) and located at one end of the cam plate (9), wherein the cam plate (9) and the counterweight cam plate (10) are respectively provided with a clamping unit with the same structure with the main shaft (4); A second one-way valve (18) is installed at a middle position on the inner side of each of the plurality of heat dissipation pipes (12); a first one-way valve (17) is installed at a middle position on the inner side of each of the plurality of heat absorption secondary flow channels (13); an electric control stop valve (19) is installed at one end position on the inner side of each of the plurality of heat dissipation pipes (12) and the plurality of heat absorption secondary flow channels (13); One end of each of the plurality of pistons (14) is connected to a piston return spring (16), and one end of each of the plurality of piston return springs (16) is respectively connected to one end of each of the plurality of heat absorbing direct flow channels (11).

2. The brushless motor according to claim 1, characterized in that: The air cooling component comprises a first limiting ring (23) fixed to 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 located at one end of the first limiting ring (23), and a second limiting ring (25) fixed to one end of the main shaft (4) and located at one end of the impeller (21), one end of the second limiting ring (25) is connected to an impeller return spring (24) sleeved on the outer side of the main shaft (4), and one end of the impeller return spring (24) abuts against one end of the impeller (21).

3. The brushless motor according to claim 2, characterized in that: A cleaning mechanism is provided at one end of the impeller (21); the cleaning mechanism comprises a plurality of brush rods (30) arranged in a circumference and fixed to one end of the impeller (21) at an edge position, and a brush (31) is provided on one side of each of the plurality of brush rods (30).

4. The brushless motor according to claim 1, characterized in that: The clamping unit comprises a spring cavity (32) provided on one side of the main shaft (4) and a positioning groove (36) provided on the inner side of the cam plate (9) at a position corresponding to the spring cavity (32); a slide plate (33) is slidably connected to the inner side of the spring cavity (32); one end of the slide plate (33) is connected to a lifting spring (34); one end of the lifting spring (34) is connected to an inner end of the spring cavity (32); and a positioning protrusion (35) extending to the outside of the main shaft (4) is fixed to the other end of the slide plate (33).

5. The brushless motor according to claim 4, characterized in that: One end of the positioning protrusion (35) and the inner side of the positioning groove (36) are both spherical structures, and one end of the positioning protrusion (35) is adapted to the inner side of the positioning groove (36).

6. The brushless motor according to claim 1, characterized in that: A protective cover (26) is fixed at one end of the outer side of the motor housing (1); an air inlet (27) is provided at one end of the protective cover (26) at an edge position; a filter (29) is pasted on the inner side of the protective cover (26) at a position corresponding to the air inlet (27); an air outlet pipe (37) is inserted at the other end of the protective cover (26) at a position corresponding to the heat dissipation pipe (12); and a shrinking plate (38) is fixed at one end of the air outlet pipe (37).

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