CN106160313B - Motor - Google Patents

Abstract

The present invention provides a kind of motor (100), comprising: a shell (10), wherein being formed in the shell (10) mainly along the inner cavity (40) that the axial direction (x) of the motor (100) extends；One fan (30), the first end (110) in the inner cavity (40) is arranged in it, and it is in fluid communication with the inner cavity (40), wherein the second end (120) opposed with the fan of the inner cavity (40) is closed, and hatch frame (60) are equipped on the peripheral wall (18) of the shell (10), it is in fluid communication with the inner cavity (40).

Description

Motor

Technical field

The present invention relates to a kind of motor, especially motor, also relate particularly to that high inertia motor is needed to force in other words The improvement that the cooling of air-cooled heavy-duty motor is carried out.

Background technique

In motor, in the heavy-duty motor that especially needs air blast cooling, fan is often used to realize the cooling of motor Component.In the prior art, axial heat dissipation channel is equipped with usually on four angles of electric machine casing.Cooling air is in fan Driving under channel axially flowed out from an axial end portion of motor, realize heat dissipation.

Summary of the invention

In order to realize a kind of more preferably radiating mode, the present invention provides a kind of motors comprising: a shell, In in the shell formed at least partially along the motor axially extending inner cavity；One fan is arranged in the inner cavity A first end, and be connected to the cavity fluid, wherein the second end opposed with the fan of the inner cavity is closed, And at least one opening structure is equipped on the peripheral wall of the shell, it is connected to the cavity fluid.Wherein peripheral wall is especially Refer to the outside wall portions of shell axially extended.The axial direction of motor is often referred to the extending direction of the motor shaft of motor in the art. This design scheme through the invention changes usual heat dissipation gas along the airflow direction of motor axially passed in and out, so that Heat dissipation air is under the action of the back pressure for the second end being closed along the outlet on shell peripheral wall at least partly along motor Circumferential outflow, thus further improve heat dissipation.Wherein fan is not solely restricted to aerofoil fan used at present, centrifugal fan Deng being also possible to diaphragm air pump, wind pressure machine etc. compresses air to manufacture distinguished and admirable equipment.

According to a kind of advantageous embodiment, cavity includes the main axially extending plural air duct along motor, wherein The hatch frame is distributed respectively for every air duct.

According to a kind of advantageous embodiment, hatch frame is at least one long and narrow opening.It can by this design Using jet pipe effect, so that the speed increase due to the diminution of cross-sectional area when gas flows out, thus makes heat dissipation effect more It is good.

According to a kind of advantageous embodiment, long and narrow opening is at an acute angle with the axial direction along described axially extending or edge Direction extend.This design method allows the air-flow of outflow around the axial-movement of motor, and effectively utilizes air and put Heat dissipation of the big effect enhancing in motor circumferential surface.

According to a kind of advantageous embodiment, the hatch frame in plural air duct is separately arranged as so that from each opening The air of structure outflow is flowed towards a direction of rotation.The air of each hatch frame outflow or all around motor as a result, Axis is mainly flowed toward the clockwise direction or is counterclockwise flowed, and forms the circulation of wound motor axial direction.

According to a kind of advantageous embodiment, hatch frame includes that an opening portion is used to flow out for air, the opening portion It is formed by the gap between Duan Yuyi the second peripheral wall sections of first peripheral wall of be arranged spaced reciprocally of the peripheral wall.

Advantageously, the part of the part of the first peripheral wall section and the second peripheral wall section is along described axially staggered, in other words Overlapping portions, thus, it is possible to form a nozzle arrangements in opening portion.

Advantageously, gap between the first peripheral wall section and the second peripheral wall section forms one towards the outside of motor gradually Narrowed jet pipe can further speed up the rate of outflow of air-flow in this way, prompt rate of heat dissipation.

According to a kind of advantageous embodiment, the first peripheral wall section or the second peripheral wall section have the radial direction towards the motor The curved end in inside.This design can make gas outflow more smooth.

In order to further enhance heat dissipation, radiating ribs position can be equipped in the air duct.

According to a kind of advantageous embodiment, the second end of inner cavity is closed by a cover piece, wherein setting on the cover piece The through-hole for thering is the motor shaft of power supply machine to pass through.

Detailed description of the invention

The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein,

Fig. 1 schematically shows a kind of motor according to the prior art；

Fig. 2 schematically shows a kind of motors of embodiment according to the present invention；

Fig. 3 shows the cross-sectional view of the I-I cutting line along Fig. 2；

Fig. 4 schematically shows a kind of hatch frames of the shell of embodiment according to the present invention；

Fig. 5 schematically shows a kind of hatch frame of the shell of embodiment according to the present invention；

Fig. 6 schematically shows a kind of hatch frame of the shell of embodiment according to the present invention；

Fig. 7 schematically shows a kind of opening portion of the hatch frame of embodiment according to the present invention；

Fig. 8 schematically shows a kind of opening portion of the hatch frame of embodiment according to the present invention；

Fig. 9 schematically shows a kind of opening portion of the hatch frame of embodiment according to the present invention；

Figure 10 schematically shows the air-flow around a kind of motor of embodiment according to the present invention.

Reference signs list

10 shells

11 stators

12 rotors

18 peripheral walls

30 fans

40 cavitys

41,42,43,44 air duct

45,46,47,48 ducting outlet

50 cover pieces

51 through-holes

60 hatch frames

65 opening portions

66 interconnecting pieces

67,67 ' first peripheral wall section

68,68 ' second peripheral wall section

69 gaps

70 motor shafts

71,72 bearing

100 motors

101 casing parts

102 inner shell sections

110 first ends

120 second ends

411,421 air duct side

420 radiating ribs positions

611,612,613,614 open section

621,622,623,624 open section

611 ', 612 ', 613 ', 614 ' open sections

621 ', 622 ', 623 ', 624 ' open sections

Specific embodiment

For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed Bright specific embodiment.

Fig. 1 shows a kind of motor 100 ' of prior art.The motor 100 ' has the approximation that the axial x along motor extends The electric machine casing 10 ' of tubbiness, it is approximate rectangular casing part 101 ' and transversal that the shell 10 ' shown in figure, which is equipped with cross section, Face is circular inner shell sections 102 '.Casing part 101 ' and inner shell sections 102 ' can be to form integrated, or separation Two independent shells are set.Inner shell sections 102 ' are commonly used in surrounding the stator and rotor of motor 100 '.It is shown in figure Casing part in the prior art is closed on axially extending peripheral wall.Usually in inner shell sections 102 ' and casing part The axially extending inner cavity 40 mainly along motor is formed between 101 ', also having such as shell only includes casing part without inner casing Partial motor, wherein the stator or rotor in shell and motor also can be formed directly in inner cavity.Specifically, cavity 40 can Be included in air duct 41,42 that the axial x mainly along motor 101 ' formed at four angles of casing part 101 ' extends, 43,44.These air ducts have subtriangular cross section.One of motor 101 ' is usually placed in for cooling fan 30 Axial end.Air duct 41,42,43,44 is extended to from the first end 110 of motor being located at electric motor end cap positioned at motor The second end 120 of output end (motor shaft 70 of motor is stretched out from the output end).

Mainly by motor body, i.e. the stator of motor and rotor generates the heat of motor.Especially in stator arrangement in rotor In the motor of radial outside, the coil of stator can generate a large amount of heat, these a large amount of heat are further transferred inner casing portion again Divide on 102 '.Therefore, in order to realize the heat dissipation of motor, it usually needs consider how heat from motor body, especially from inner casing It takes away part 102 '.In radiating mode shown in Fig. 1, fan 30 drives air defeated along axial x along air duct 41,42,43,44 Send, take away the partial heat of inner shell sections 102 ' in the process, then the ducting outlet 45 at output end 120,46,47, 48, which leave motor, enters external environment, is achieved in the cooling to motor.

A kind of motor 100 of embodiment according to the present invention is described with schematic diagram now in conjunction with Fig. 2 and Fig. 3.Wherein Fig. 3 It is in Fig. 2 along the cross-sectional view of cutting line I-I.Motor 100 also has the electric machine casing 10 along the axial x approximate tubbiness extended.? Motor body, the i.e. core components such as the stator 11 of motor, rotor 12 and motor shaft 70 are accommodated in shell 10, wherein motor shaft 70 It is rotatably supported in motor by bearing 71,72.It is approximate rectangular shell that the shell 10, which also similarly has cross section, Points 101 and cross section be circular inner shell sections 102.The cross-sectional shape of its shell portions 102 be also possible to it is circular or Person other skilled in the art select shape, and its can be with inner shell sections 101 to be formed it is integrated, or mutually What isolated mode constructed.

In order to realize better heat dissipation, according to the present invention, first by each air duct 41,42,43,44 in shell 10 in axis To each ducting outlet 45,46,47,48 at by axial closing.As shown in Figures 2 and 3, the of air duct 41,42,43,44 A cover piece 50 is equipped at two ends 120.Cover piece closes these air ducts at the second end 120 in air duct 41,42,43,44.? Cover piece 50 is equipped with through-hole 51, and motor shaft 70 is stretched out by the through-hole is used for power transmission.In addition, according to the present invention, in shell 10 along axial x extend casing part 101 peripheral wall 18 be equipped at least one opening structure 60, these hatch frames 60 with Air duct 41,42,43,44 is in fluid communication the cavity 40 of shell 10 in other words.Due to fan 30 drive air along air duct 41,42, 43,44 flow from first end 110 towards second end 120, when second end 120 is closed, are formed inside air duct 41,42,43,44 Biggish back pressure.Under the action of this back pressure, air from each hatch frame 60 on the peripheral wall 18 for being located at casing part 101 with Higher speed outflow.It is consequently for cooling air and forms the gas being centered around on nearly all outer surface of entire motor body Stream, further enhances heat dissipation.

Hatch frame 60 illustrated in fig. 2 is a kind of embodiment according to the present invention, in the shell of shell 10 Divide the long and narrow opening extended on 101.Due to long and narrow opening bring air enlarge-effect, from the high-speed gas of opening ejection The surrounding air outside shell 10 is driven to flow the air-flow to form high pressure, high speed, therefore radiating efficiency is also improved.Especially It is that in the embodiment shown in figure 2, this thin-and-long opening extends also along axial x, thus work of the air in enlarge-effect It is flowed out under along the circumferential high speed of shell 10.Especially in this embodiment, due to cavity 40 include air duct 41,42,43, 44, therefore the hatch frame axially extended 60 is respectively configured for this four air ducts.It is not shown, can still think To be in the electric machine casing with other constructions, such as when the cross section of casing part is in circular situation, outside The air duct of six, eight or other quantity can be arranged between shell parts and inner shell sections, also respectively each air duct setting one The hatch frame of a fluid communication according to the present invention.It participates in Figure 10 and schematically shows motor 100 equipped with according to this hair The flow direction of cooling wind after bright design.Such as figure can be shown in, be open along axial direction from air duct with cooling air in the prior art 45, it is that a large amount of gas is sprayed from the hatch frame 60 of shell 10, and formation surrounds that 46,47,48 outflow forms are visibly different Air-flow on nearly all outer surface of entire motor body, thus further enhances heat dissipation effect.

In addition, according to the design in air duct in the specific configuration of the shell of motor and shell, it can also be in the teachings of the present invention Hatch frame 60 on the lower peripheral wall 18 by shell 10 is designed as a variety of different forms.

For example, Fig. 4 and Fig. 5 schematically show a kind of embodiment of hatch frame 60 according to the present invention. Wherein as shown in figure 4, the hatch frame 60 being in fluid communication respectively with each air duct 41,42,43,44 can be the week in shell 10 Multiple long and narrow open sections that the axial x along motor 100 on wall 18 extends.For example, the opening being in fluid communication with air duct 41 Structure is configured to four slotted opening sections 611,612,613,614 evenly distributed along axial x；It is in fluid communication with air duct 42 Hatch frame is configured to four slotted opening sections 621,622,623,624 evenly distributed along axial x.It is, of course, also possible to set Set the shorter more open section of length.It will be noted that in order to realize in the better aerodynamics in the periphery of motor, it can The wind in the air duct 41 in place, such as Fig. 4 on one side each hatch frame 60 to be arranged in the same direction in each air duct The air duct side 421 in road side 411 and air duct 42.

Fig. 5 then shows the another embodiment of hatch frame 60, and can be multiple and axial x has angle, especially It is the open section of acute angle.Such as the hatch frame 61 being connected to air duct 41 is then schematically illustrated in Fig. 6 and is designed to four With four open sections 611 ', 612 ', 613 ', 614 ' of axial x arrangement at an acute angle.Under this design, the output flow side of air-flow It is flowed out to for the direction close to the peripheral wall of shell 10 edge perpendicular to open section 611 ', 612 ', 613 ', 614 '.Certainly, open section Quantity and specific angle can be selected according to the actual situation.And open section can also have certain Curve Design. Design is conducive to that radiating airflow is directed to the side far from fan 30 while enhancing heat dissipation effect in this way.Although not having Body is shown, but hatch frame 60 can also realize more arrangements under the teachings of the present invention.

In order to advanced optimize the aerodynamics from hatch frame 60, the opening portion of hatch frame 60 can also be carried out Optimization design.By air duct 41 be in fluid communication hatch frame 60 for, Fig. 6 schematically illustrate hatch frame 60 along perpendicular to The cross-sectional view that the direction of axial x is splitted.The cross section in air duct 41 is have a generally triangular shape, wherein being formed at the left hand corner in figure narrow The opening portion 65 of narrow hatch frame 61.Opening portion 65 by shell 10 peripheral wall 18 a first peripheral wall section 67 and with it is described First peripheral wall section 67 is spaced apart from each other the seam between part overlapped between a second peripheral wall section 68 of the shell 10 of extension The formation of gap 69.Second peripheral wall section 68 is stretched out from the interconnecting piece 66 of a connected with outer casing part 101 and inner shell sections 102 at this. The distance a in gap 69, preferably can be between 0.2mm and 10mm according to the size of motor.It is this to be configured to guidance air-flow Direction shown in arrow (counter clockwise direction i.e. in figure) flows out along figure.Advantageously gap 69 is towards the outer of motor 100 Portion's (towards external environment) be it is gradually narrowed, i.e., opening portion 65 formed nozzle structure.According to aerodynamics it is found that this jet pipe Structure can speed up the rate of outflow of air, thus advantageously in heat dissipation.Similarly, by the opening knot in other air ducts The opening portion 65 of structure 60 is also configured as guidance air-flow and counterclockwise flows, in other words by all nozzle structures both facing to inverse Clockwise.Thus refering to what is shown in Fig. 10, flowing from the air-flow that each hatch frame flows out along a direction, motor is driven The air of surrounding forms circulation, is more advantageous to heat dissipation in this way.It is understood, however, that opening portion 65 can also be located at this At another angle in air duct 41, and the opening portion in other three air ducts is similarly designed, so that air-flow flows clockwise.

Fig. 7 to Fig. 9 schematically shows the numerous embodiments of outlet portion 65.Wherein, in embodiment party as shown in Figure 7 The second peripheral wall section 68 in formula further shortens, and forms opening portion 65 with the first peripheral wall section 67 of elongation.

In the embodiment according to Fig. 8, then direction on the basis of the second peripheral wall section 68 ' embodiment shown in Fig. 7 The radially inner direction curling of motor shaft, to reduce resistance of the air-flow again at outlet portion 65, and formed leniently be routed to it is narrow Outlet nozzle structure promoted air the rate of outflow.It is further preferred that being additionally provided in air duct a plurality of disposed in parallel Radiating ribs position 411.

In the embodiment according to Fig. 9, towards electricity on the basis of the first peripheral wall section 67 ' embodiment shown in Fig. 8 The radially inner direction curling of arbor, to reduce resistance of the air-flow again at outlet portion 65.

In addition to Fig. 6 to various design schemes shown in Fig. 9, it can further include other advantageous nozzle arrangements.

Figure 10 shows the schematic diagram for the air-flow observed along the axial direction x for being parallel to motor.As it can be seen that by advantageously The opening portion of hatch frame on the peripheral wall 18 for being distributed in electric machine casing 10 is designed as the spray nozzle part towards same direction of rotation, Enable air-flow around motor towards counterclockwise or moving clockwise, thus further optimizes and sky is utilized Gas amplification optimizes the heat dissipation of motor.

Although not each embodiment only includes one it should be appreciated that this specification describes according to various embodiments A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say As a whole, the technical solutions in the various embodiments may also be suitably combined for bright book, and forming those skilled in the art can be with The other embodiments of understanding.

The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any Those skilled in the art, made equivalent variations, modification and combination under the premise of not departing from design and the principle of the present invention, It should belong to the scope of protection of the invention.

Claims (8)

1. motor (100) comprising:

One shell (10), wherein extend in the middle formation of the shell (10) at least partially along the axial direction (x) of the motor (100) Inner cavity (40)；

One fan (30) is arranged a first end (110) in the inner cavity (40), and connects with the inner cavity (40) fluid It is logical,

It is characterized by:

The second end (120) opposed with the fan of the inner cavity (40) is closed, and

At least one opening structure (60) are equipped on the peripheral wall (18) of the shell (10), are connected with the inner cavity (40) fluid It is logical,

The inner cavity (40) includes the plural air duct (41,42,43,44) mainly extended along the axial direction (x), wherein being every The hatch frame (60) is distributed in air duct (41,42,43,44) respectively,

The hatch frame (60) of the plural number air duct (41,42,43,44) is separately arranged as so that from each hatch frame (60) air flowed out is flowed towards a direction of rotation, wherein the hatch frame (60) includes an opening portion (65), by Seam between be arranged spaced reciprocally the first peripheral wall section (67) of the peripheral wall (18) and a second peripheral wall section (68) Gap (69) formation.

2. motor according to claim 1, which is characterized in that the hatch frame (60) is at least one long and narrow to open Mouthful.

3. motor according to claim 2, which is characterized in that the long and narrow opening extend along the axial direction (x) or Extend along with the axial direction (x) direction at an acute angle.

4. motor according to claim 1, which is characterized in that the part of the first peripheral wall section (67) and the second peripheral wall section (68) part interlocks along the axial direction (x).

5. motor according to claim 1, which is characterized in that the first peripheral wall section (67) and the second peripheral wall section (68) it Between gap (69) form the jet pipe that gradually narrows towards the outside of motor.

6. motor according to claim 4, which is characterized in that the first peripheral wall section (67) or the second peripheral wall section (68) have towards the curved end of radially inner side of the motor (100).

7. according to right want any one of 1 to 6 described in motor, which is characterized in that in the air duct (41,42,43,44) Equipped with radiating ribs position (420).

8. motor as claimed in any of claims 1 to 6, which is characterized in that

The second end (120) of the inner cavity (40) is closed by a cover piece (50), wherein being equipped with power supply on the cover piece (50) The through-hole (51) that a motor shaft (70) for machine passes through.