CN114793038B

CN114793038B - Compact air-cooled motor

Info

Publication number: CN114793038B
Application number: CN202210717292.5A
Authority: CN
Inventors: 高昱; 王建南; 黄丽萍; 王璐颖; 曹洲; 陆寒峰; 关正; 张平山
Original assignee: Changzhou Changlong Motor Co ltd
Current assignee: Changzhou Changlong Motor Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-09-02
Anticipated expiration: 2042-06-23
Also published as: CN114793038A

Abstract

The invention discloses a compact air-cooled motor which comprises a motor shell, wherein a spindle is arranged in the motor shell, a spindle motor is arranged at the outer end of the spindle, the rear end of the motor shell is connected with a rear cover bin, an air inlet net opening is formed in the surface of the rear end of the rear cover bin, a forced heat dissipation device is arranged in the inner cavity of the rear cover bin, a gap is reserved between a stator of the spindle motor and the inner cavity of the motor shell to form a cooling air ventilation channel, and a plurality of cooling fins are arranged on the periphery of the motor shell. The fan can be driven by the spindle to rotate, so that the fan blade is suitable for short-time cooling operation, and the fan blade is driven by a single high-speed motor for long-time operation, so that long-time cooling is provided, a forced air cooling effect is achieved, the temperature rise of a motor bearing is effectively controlled, and the stable operation of the motor is ensured.

Description

Compact air-cooled motor

Technical Field

The invention relates to the field of motors, in particular to a compact air-cooled motor.

Background

When the motor operates, the bearing rapidly heats and transfers heat to the motor body, the motor is forced to stop operation often because the temperature is higher than the regulation, and the safety of starting and stopping the steam turbine is seriously threatened. The temperature of the bearing of the motor can rise to over 90 ℃ in 30 minutes, and the motor is forced to stop running after exceeding the allowable temperature rise due to continuous running.

Under ideal condition, if can distribute away the heat that the motor produced completely at any time, as long as the mechanical strength of motor can guarantee, the motor can export infinitely great power, therefore the heat dispersion of motor has decided the size of motor power, and it is the important way that improves motor power to improve the motor radiating effect promptly.

Inside forced air cooling of present motor usually adopts the mode of connecting the flabellum by the motor spindle to dispel the heat, but the radiating effect is direct to be correlated with the slew velocity of main shaft, leads to the radiating effect unable assurance, because motor load too big can lead to the rotational speed step-down, produces more heats simultaneously and has restricted the promotion of motor power, but the flabellum rotates after having slowed again unable sufficient wind-force that provides, leads to whole radiating effect not good.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a compact air-cooled motor.

In order to solve the technical problems, the invention provides the following technical scheme:

the invention relates to a compact air-cooled motor, which comprises a motor shell, wherein a spindle is arranged in the motor shell, a spindle motor is arranged at the outer end of the spindle, bearing sleeves are sleeved at two ends of the spindle, a front cover plate is arranged at the front end of the motor shell, a first exhaust hole is formed in the surface of the front cover plate, a rear cover bin is connected at the rear end of the motor shell, an air inlet net opening is formed in the surface of the rear end of the rear cover bin, a forced heat dissipation device is arranged in the inner cavity of the rear cover bin, a gap is reserved between a stator of the spindle motor and the inner cavity of the motor shell to form a cooling air ventilation channel, a second exhaust hole is formed in the outer side of the front end of the motor shell, a plurality of cooling fins are arranged on the periphery of the motor shell, the forced heat dissipation device comprises a high-speed motor and a cooling fan assembly, and a cooling fan assembly is arranged on a rotating shaft of the high-speed motor, the outer periphery of the high-speed motor is sleeved with an annular radiator, the surface of the annular radiator is provided with a cold guide pipeline, the cold guide pipeline extends to the outer part of the rear cover bin in a penetrating manner, the cooling fan assembly comprises an auxiliary sliding rod and a sliding inner shell, the auxiliary sliding rod is transversely arranged at the four corners of the rear cover bin, the sliding inner shell is sleeved on the outer part of the auxiliary sliding rod, air ports are formed in the two side surfaces of the sliding inner shell, clamping rings are arranged in the air ports through supporting rods, a rotary drum is arranged in the sliding inner shell, fan blades are arranged on the outer periphery of the rotary drum, two ends of the rotary drum are connected with connecting sleeve rods, the outer periphery of each connecting sleeve rod is sleeved with an angular contact bearing, the angular contact bearing is fixedly clamped in each clamping ring, a first butt-joint clamping piece is arranged at the opening of each connecting sleeve rod, and second butt-joint clamping pieces are arranged at the inner end of the main shaft and the rotating shaft of the high-speed motor, the top surface mounting in back lid storehouse has electric telescopic handle, electric telescopic handle's top is connected with the poker rod, and the poker rod runs through to the inside in back lid storehouse and is connected with the inner shell that slides, the surface in back lid storehouse is opened along electric telescopic handle's flexible orientation has the removal notch.

As a preferred technical scheme of the present invention, the first butt joint fastener is composed of four steel round rods and is uniformly distributed at an opening of the connecting loop rod, the second butt joint fastener includes a connecting disc and four insertion blocks, the four insertion blocks are uniformly distributed on the bottom end surface of the connecting disc, and the insertion blocks are in an inverted triangular cone shape and can be inserted into gaps between the steel round rods of the first butt joint fastener.

As a preferable technical solution of the present invention, the diameter of the connecting sleeve is smaller than the diameter of the rotating drum, the rotating drum is located between the clamping rings, the inside of the rotating drum is a hollow structure, and magnets with different magnetism are disposed on the opposite surfaces of the first butt-joint clamping piece and the connecting disc.

As a preferred technical solution of the present invention, a backflow windshield is disposed on an outer side surface of the second exhaust hole, an air outlet of the backflow windshield faces the heat sink, and one side of the heat sink is covered at one end of the backflow windshield, where an air outlet of the fan blade faces the spindle motor.

As a preferred technical scheme of the invention, bases are installed at the bottom ends of the two transverse sides of the motor shell, the bases are of a trapezoidal structure, two oil through pipelines are arranged on any one of the bases, the opening positions of the oil through pipelines and the bearing sleeve group are positioned on the same vertical line, the bottom end of the bearing sleeve group is connected with an oil conveying pipeline, and the oil conveying pipeline is connected with the oil through pipelines.

Compared with the prior art, the invention has the following beneficial effects:

the poke rod is pushed by the electric telescopic rod to enable the sliding inner shell in the rear cover bin to move, so that a driving mode of a fan can be selected according to the temperature inside the motor shell or the time required by the motor to operate, the fan blades are driven by the spindle to rotate, the fan blades are suitable for short-time work cooling, and the fan blades are driven by an independent high-speed motor for long-time work, so that long-time cooling is provided, the rotating speed of the fan blades can be independently controlled, the spindle motor part on the front side is cooled, the forced air cooling effect is achieved, the temperature rise of a motor bearing is effectively controlled, and the stable operation of the motor is ensured; meanwhile, the annular radiator is cooled through the cold guide pipeline, the annular radiator can reduce the temperature of the sucked air and the high-speed motor, and blown air can effectively dissipate heat of the main shaft and the bearing sleeve part through the cooling air ventilation channel; meanwhile, the wind discharged from the second air exhaust hole changes the wind direction through the backflow wind shield, so that the wind blows to the radiating fins on the outer side of the motor shell, the radiating effect of the radiating fins is further improved by the discharged wind, and the temperature of the whole motor is further reduced; meanwhile, lubricating oil is forcibly input to the bearing sleeve through an oil pipeline and an oil pipeline on the base at the bottom of the motor shell, so that the temperature of the main shaft and the bearing sleeve is effectively controlled, and the main shaft is prevented from being damaged by high temperature generated by high-speed rotation of the main shaft.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall construction of the present invention;

FIG. 3 is a schematic view of a second vent configuration of the present invention;

FIG. 4 is a front cross-sectional view of the inner shell of the present invention;

FIG. 5 is a longitudinal cross-sectional view of the inner sliding shell of the present invention;

FIG. 6 is a schematic view of the first and second docking snaps of the present invention;

FIG. 7 is a schematic view of the connection of an oil pipeline to a drift oil pipeline according to the present invention;

in the figure: 1. a motor housing; 2. a main shaft; 3. a spindle motor; 4. a bearing sleeve set; 5. a front cover plate; 6. a first exhaust port; 7. a rear cover bin; 8. an air inlet net port; 9. a cooling air duct; 10. a second vent hole; 11. a heat sink; 12. a high-speed motor; 13. a heat dissipation fan assembly; 14. an annular heat sink; 15. a cold conducting pipeline; 16. a machine base; 81. an auxiliary slide bar; 82. sliding the inner shell; 83. a tuyere; 84. clamping the circular ring; 85. a rotating drum; 86. a fan blade; 87. connecting the loop bar; 88. an angular contact bearing; 89. a second mating fastener; 810. an electric telescopic rod; 811. a poke rod; 812. a first butt-joint fastener; 813. a moving slot; 891. connecting the disc; 892. inserting a block; 161. an oil duct; 162. an oil pipeline; 101. a backflow wind shield.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1

As shown in fig. 1 to 3, the invention provides a compact air-cooled motor, which comprises a motor housing 1, wherein a spindle 2 is installed inside the motor housing 1, a spindle motor 3 is installed at the outer end of the spindle 2, bearing sleeves 4 are respectively sleeved at two ends of the spindle 2, a front cover plate 5 is arranged at the front end of the motor housing 1, a first exhaust hole 6 is formed in the surface of the front cover plate 5, a rear cover bin 7 is connected to the rear end of the motor housing 1, an air inlet net opening 8 is formed in the surface of the rear end of the rear cover bin 7, a forced heat dissipation device is installed in the inner cavity of the rear cover bin 7, a gap is left between a stator of the spindle motor 3 and the inner cavity of the motor housing 1, a cooling air duct 9 is formed, a second exhaust hole 10 is formed in the outer side of the front end of the motor housing 1, and a plurality of cooling fins 11 are arranged on the periphery of the motor housing 1.

Further, force heat abstractor including high-speed motor 12 and radiator fan subassembly 13, the pivot of high-speed motor 12 is provided with radiator fan subassembly 13, and annular radiator 14 has been cup jointed to the periphery of high-speed motor 12, and annular radiator 14's surface mounting has cold guide pipeline 15, and cold guide pipeline 15 runs through the outside that extends to back lid storehouse 7.

Specifically, an encoder and a junction box are arranged on the top end surface of the motor shell 1, a temperature measuring element is arranged inside the motor shell 1, the cold guide pipeline 15 is connected with a refrigeration assembly, the refrigeration assembly can be cooled by circulating water or liquid nitrogen, a corresponding electronic valve is arranged on the cold guide pipeline 15 after the connection, and a circuit can be used after being communicated with a controller; the high-speed motor 12 drives the heat dissipation fan assembly 13, the heat dissipation fan assembly 13 sucks air from the outside from the air inlet net port 8, the air passes through the annular radiator 14 after being sucked, the annular radiator 14 is cooled by cold conduction through the cold guide pipeline 15, so that the temperature of the air passing through the annular radiator 14 is reduced, meanwhile, the annular radiator 14 also cools the high-speed motor 12, damage caused by overheating due to long-time work is avoided, cold air blown out by the heat dissipation fan assembly 13 is blown to the spindle 2 and the bearing sleeve 4, meanwhile, the air passes through the cooling air ventilation channel 9 between the stator of the spindle motor 3 and the inner cavity of the motor shell 1 and is finally discharged from the first exhaust hole 6 on the front cover plate 5 and the second exhaust hole 10 on the side of the motor shell 1, heat generated in the working process of the spindle motor 3 is taken out, the cooling effect is realized, and the heat dissipation area of the heat dissipation fins 11 outside the motor shell 1 can be increased, the motor housing 1 can dissipate heat better.

Example 2

As shown in fig. 2 and fig. 4-5, the invention provides a compact air-cooled motor, in which a cooling fan assembly 13 includes an auxiliary sliding rod 81 and a sliding inner shell 82, the auxiliary sliding rod 81 is transversely installed at four corners of a rear cover bin 7, the sliding inner shell 82 is sleeved outside the auxiliary sliding rod 81, air ports 83 are respectively arranged on two side surfaces of the sliding inner shell 82, clamping rings 84 are installed inside the air ports 83 through supporting rods, a rotating cylinder 85 is arranged inside the sliding inner shell 82, fan blades 86 are installed on the periphery of the rotating cylinder 85, connecting sleeve rods 87 are connected to two ends of the rotating cylinder 85, angular contact bearings 88 are sleeved on the periphery of the connecting sleeve 87, the angular contact bearings 88 are fixedly clamped inside the clamping rings 84, a first butt-joint clamping member 812 is arranged at an opening of the connecting sleeve 87, a second butt-joint clamping member 89 is arranged at an inner end of a main shaft 2 and a rotating shaft of a high-speed motor 12, an electric telescopic rod 810 is installed on a top surface of the rear cover bin 7, the top end of electric telescopic handle 810 is connected with poker rod 811, and poker rod 811 runs through to the inside of back lid storehouse 7 and is connected with the inner shell 82 that slides, and the surface of back lid storehouse 7 is opened along the flexible orientation of electric telescopic handle 810 has removal notch 813.

Specifically, on the basis of embodiment 1, the cooling fan assembly 13 can be selectively driven by the high-speed motor 12 or driven by the main shaft 2, the electric telescopic rod 810 pushes the poke rod 811, the poke rod 811 moves towards one side of the main shaft 2 along the moving notch 813, so that the sliding inner shell 82 moves forwards along the auxiliary sliding rod 81, the second pair of connecting clamping pieces 89 on the tail end of the main shaft 2 is inserted into the connecting sleeve rod 87, and the first pair of connecting clamping pieces 812 and the second pair of connecting clamping pieces 89 are clamped, so that in the process that the main shaft motor 3 drives the main shaft 2 to rotate, the main shaft 2 can drive the connecting sleeve rod 87, the connecting sleeve rod 87 rotates in the angular contact bearing 88, the connecting sleeve rod 87 drives the rotating cylinder 85, and the fan blades 86 on the periphery of the rotating cylinder 85 rotate, so as to blow air for cooling; and because 2 load flabellum 86 of main shaft rotate, can increase spindle motor 3's load power to a certain extent, the radiating effect is limited, thereby when needing spindle motor 3 to operate for a long time, then control electric telescopic handle 810 and retract, make the adapter sleeve pole 87 of the other end and the pivot butt joint of high speed motor 12, the adapter sleeve pole 87 that 2 one end of main shaft was connected deviates from simultaneously, then drive the flabellum by high speed motor 12 this moment and rotate, can transport the control amount of wind according to the inside temperature control fan of motor casing 1, it can effectively promote the cooling effect to form independent cooling subassembly, dispel the heat to spindle motor 3 one side.

Example 3

As shown in fig. 6, the present invention provides a compact air-cooled motor, wherein the first butt-joint clamping piece 812 is composed of four steel round rods, and is uniformly distributed at the opening of the connecting sleeve rod 87, the second butt-joint clamping piece 89 includes a connecting disc 891 and inserting blocks 892, four inserting blocks 892 are uniformly distributed on the bottom end surface of the connecting disc 891, the inserting blocks 892 are in an inverted triangular cone shape, and can be inserted into the gap between the steel round rods of the first butt-joint clamping piece 812.

Further, the diameter of the connecting sleeve 87 is smaller than that of the rotating cylinder 85, the rotating cylinder 85 is located between the clamping rings 84, the inside of the rotating cylinder 85 is hollow, and the first clamping piece 812 and the connecting disc 891 are provided with magnets with different magnetism on the opposite surfaces.

Specifically, on the basis of embodiment 2, when the second butting and clamping piece 89 and the first butting and clamping piece 812 are butted, the insertion block 892 on the connecting disc 891 is inserted between the steel round rods of the first butting and clamping piece 812, and the insertion block 892 is in an inverted triangular cone shape, so that the butting and insertion can be facilitated, and meanwhile, the connecting disc 891 and the surface of the first butting and clamping piece 812 attract each other, so that the butting efficiency is further improved.

Example 4

As shown in fig. 3, the present invention provides a compact air-cooled motor, wherein a back flow wind shield 101 is disposed on the outer surface of the second exhaust hole 10, an air outlet of the back flow wind shield 101 faces the heat sink 11, one side of the heat sink 11 is covered in the back flow wind shield 101, and an air outlet of the fan blade 86 faces one end of the spindle motor 3.

Specifically, based on embodiment 3, the part of the air blown out from the inside of the motor housing 1 through the second air outlet 10 is blown off to the rear outside of the motor housing 1 through the backflow wind shield 101, so that the air is blown onto the heat dissipation fins 11, and the air circulation speed at the heat dissipation fins 11 is increased, thereby further improving the heat dissipation effect.

Example 5

As shown in fig. 7, the present invention provides a compact air-cooled motor, wherein bases 16 are installed at bottom ends of two lateral sides of a motor housing 1, the bases 16 are in a trapezoidal structure, wherein two oil ducts 161 are opened on any one base 16, an opening position of the oil duct 161 and a bearing set 4 are in a same vertical line, a bottom end of the bearing set 4 is connected with an oil duct 162, and the oil duct 162 is connected with the oil duct 161.

Specifically, on the basis of embodiment 1, the oil passage 161 on the base 16 is connected to the output end of the lubricant atomizer, and the lubricant is atomized and then enters the inside of the bearing set 4 through the oil passage 162, so that the lubrication of the bearings inside the bearing set 4 is realized, the high temperature generated during the high-speed rotation process of the main shaft 2 and the bearing set 4 is prevented from vaporizing and evaporating the lubricant, the temperature of the connection part is kept stable, and the main shaft 2 is prevented from being damaged by the high temperature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The compact air-cooled motor comprises a motor shell (1), wherein a spindle (2) is installed inside the motor shell (1), a spindle motor (3) is installed at the outer end of the spindle (2), bearing sleeves (4) are sleeved at two ends of the spindle (2), the compact air-cooled motor is characterized in that a front cover plate (5) is arranged at the front end of the motor shell (1), a first exhaust hole (6) is formed in the surface of the front cover plate (5), a rear cover bin (7) is connected to the rear end of the motor shell (1), an air inlet net opening (8) is formed in the surface of the rear end of the rear cover bin (7), a forced heat dissipation device is installed in the inner cavity of the rear cover bin (7), a gap is reserved between the stator of the spindle motor (3) and the inner cavity of the motor shell (1) to form a cooling air ventilation duct (9), a second exhaust hole (10) is formed in the outer side of the front end of the motor shell (1), the periphery of the motor shell (1) is provided with a plurality of radiating fins (11), the forced radiating device comprises a high-speed motor (12) and a radiating fan assembly (13), a rotating shaft of the high-speed motor (12) is provided with the radiating fan assembly (13), an annular radiator (14) is sleeved on the periphery of the high-speed motor (12), a cold guide pipeline (15) is mounted on the surface of the annular radiator (14), the cold guide pipeline (15) penetrates through the outer portion of the rear cover bin (7) and extends to the outer portion of the rear cover bin, the radiating fan assembly (13) comprises auxiliary sliding rods (81) and sliding inner shells (82), the auxiliary sliding rods (81) are transversely mounted at four corners of the rear cover bin (7), the sliding inner shells (82) are sleeved on the outer portion of the auxiliary sliding rods (81), air ports (83) are arranged on the surfaces of two sides of the sliding inner shells (82), and clamping rings (84) are mounted in the air ports (83) through supporting rods, a rotary drum (85) is arranged in the sliding inner shell (82), fan blades (86) are arranged on the periphery of the rotary drum (85), two ends of the rotating drum (85) are connected with connecting sleeve rods (87), the peripheries of the connecting sleeve rods (87) are sleeved with angular contact bearings (88), the angular contact bearing (88) is fixedly clamped and embedded in the clamping ring (84), a first butt-joint clamping piece (812) is arranged at the opening of the connecting sleeve rod (87), the inner end of the main shaft (2) and the rotating shaft of the high-speed motor (12) are provided with second butt-joint clamping pieces (89), the top end surface of the rear cover bin (7) is provided with an electric telescopic rod (810), the top end of the electric telescopic rod (810) is connected with a poke rod (811), and the poke rod (811) penetrates the inner part of the rear cover bin (7) and is connected with the sliding inner shell (82), the surface of the rear cover bin (7) is provided with a moving notch (813) along the extension direction of the electric telescopic rod (810).

2. The compact air-cooled motor of claim 1, wherein the first docking latch (812) is composed of four steel round rods and is uniformly distributed at the opening of the connecting sleeve rod (87), the second docking latch (89) comprises a connecting disc (891) and an insert block (892), four insert blocks (892) are uniformly distributed on the bottom end surface of the connecting disc (891), and the insert block (892) is in an inverted triangular cone shape and can be inserted into a gap between the steel round rods of the first docking latch (812).

3. The compact air-cooled motor of claim 2, characterized in that the diameter of the connecting sleeve rod (87) is smaller than that of the rotary cylinder (85), the rotary cylinder (85) is positioned between the clamping rings (84), the interior of the rotary cylinder (85) is hollow, and the first clamping piece (812) and the connecting disc (891) are provided with magnets with different magnetism on the opposite surfaces.

4. The compact air-cooled motor according to claim 3, wherein the outer side surface of the second exhaust hole (10) is provided with a backflow windshield (101), the air outlet of the backflow windshield (101) faces the heat sink (11), one side of the heat sink (11) is covered in the backflow windshield (101), and the air outlet of the fan blade (86) faces one end of the spindle motor (3).

5. The compact air-cooled motor according to claim 1, wherein bases (16) are installed at bottom ends of two lateral sides of the motor housing (1), the bases (16) are of a trapezoidal structure, any one of the bases (16) is provided with two oil passages (161), an opening position of each oil passage (161) is located on the same vertical line with the bearing set (4), an oil conveying pipeline (162) is connected to the bottom end of the bearing set (4), and the oil conveying pipeline (162) is connected with the oil passages (161).