CN110098688B - Motor body and motor - Google Patents

Motor body and motor Download PDF

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Publication number
CN110098688B
CN110098688B CN201810096506.5A CN201810096506A CN110098688B CN 110098688 B CN110098688 B CN 110098688B CN 201810096506 A CN201810096506 A CN 201810096506A CN 110098688 B CN110098688 B CN 110098688B
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CN
China
Prior art keywords
motor
fan
bearing chamber
baffle
end bearing
Prior art date
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Active
Application number
CN201810096506.5A
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Chinese (zh)
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CN110098688A (en
Inventor
李倩莹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yinmengda Co ltd
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Siemens AG
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Filing date
Publication date
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Priority to CN201810096506.5A priority Critical patent/CN110098688B/en
Publication of CN110098688A publication Critical patent/CN110098688A/en
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Publication of CN110098688B publication Critical patent/CN110098688B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention provides a motor body and a motor, wherein the motor body is provided with a motor driving end and a motor non-driving end opposite to the motor driving end, and the motor body comprises a shell, a driving end bearing chamber, an inner fan and an air guide structure. The housing includes a first end cap. The drive end bearing chamber is positioned at the drive end of the motor and penetrates through the first end cover. The inner fan is arranged in the shell and is arranged at an interval with the drive end bearing chamber. The inner fan includes a fan back disc facing the drive end bearing chamber. The air guide structure is positioned in the shell, is arranged beside the inner fan and is used for guiding part of air of the inner circulation air path of the motor body to a position between the drive end bearing chamber and the fan rear disc. The motor body and the motor can effectively cool the bearing at the driving end, and can meet the cooling requirement of a high-power motor.

Description

Motor body and motor
Technical Field
The invention relates to the technical field of motors, in particular to a motor body and a motor with the motor body.
Background
The motor has extensive application in the industrial field, and current motor generally adopts traditional cooling methods such as radial ventilation and axial radial mixed ventilation, and the large-scale motor based on axial radial mixed ventilation structure has the advantage that heat convection is good and the temperature rise is low, but because in the cooling process, only a small amount of air current flows through drive end bearing room surface, leads to drive end bearing cooling not enough temperature rise too high, and the bearing spoilage is high.
In the prior art, aiming at the problem of high temperature of the air flow at the driving end, the problems of increasing the outer diameter of an inner fan, increasing the convection and heat exchange at the driving end and reducing a bearing are solved, but the wind abrasion of a motor is overlarge and the efficiency of the motor is sacrificed.
Disclosure of Invention
In view of this, the present invention provides a motor body and a motor, which can effectively cool a bearing at a driving end and meet the cooling requirement of a high power motor.
The invention provides a motor body which is provided with a motor driving end and a motor non-driving end opposite to the motor driving end, wherein the motor body comprises a shell, a driving end bearing chamber, an inner fan and an air guide structure. The housing includes a first end cap. The drive end bearing chamber is positioned at the drive end of the motor and penetrates through the first end cover. The inner fan is arranged in the shell and is arranged at an interval with the drive end bearing chamber. The inner fan includes a fan back disc facing the drive end bearing chamber. The air guide structure is positioned in the shell, is arranged beside the inner fan and is used for guiding part of air of the inner circulation air path of the motor body to a position between the drive end bearing chamber and the fan rear disc.
In an exemplary embodiment of the motor body, the wind guide structure includes: the bottom baffle is arranged at the bottom of the shell and is positioned below the inner fan; the side baffle plate and the plurality of air guide plates are fixed on the side wall of the drive end bearing chamber and are positioned between the fan rear disc and the drive end bearing chamber, and the air guide plates are arranged at intervals.
In an exemplary embodiment of the motor body, the bottom baffle is an arc-shaped plate, the bottom baffle faces the side baffle, and an air guide opening is formed between the bottom baffle and the side baffle.
In an exemplary embodiment of the motor body, the side barrier includes: the baffle body is fixed at the bottom of the fan rear disc; and the top plate is connected with the baffle body and is perpendicular to the baffle body, and the top plate and the air guide sheet are respectively positioned on two sides of the fan rear disc.
In an exemplary embodiment of the motor body, an extending direction of the air guiding sheets is perpendicular to an axial direction of a rotating shaft of the motor body, the air guiding sheets are uniformly arranged on a side wall of the drive end bearing chamber, and an air duct is formed between adjacent air guiding sheets.
In an exemplary embodiment of the motor body, the adjacent air guiding plates are equally spaced.
In an exemplary embodiment of the motor body, the inner fan is a centrifugal fan.
In an exemplary embodiment of the motor body, the motor body further includes: a drive end bearing disposed within the drive end bearing chamber.
The invention also provides a motor which comprises any one of the motor bodies.
In one exemplary embodiment of the motor, the motor further comprises: and the cooling fan cover is arranged on the motor body, communicated with the motor body and used for cooling the internal circulating air in the motor body.
In the motor body and the motor, the air guide structure is arranged in the motor body and is positioned beside the inner fan, partial air of the inner circulation air path can be guided into a space between the rear disc of the fan and the bearing chamber at the driving end, and the bearing at the driving end is further cooled on the basis of radial ventilation and axial and radial mixed ventilation cooling, so that the cooling requirement of a high-power motor can be met.
Drawings
The foregoing and other features and advantages of the invention will become more apparent to those skilled in the art to which the invention relates upon consideration of the following detailed description of a preferred embodiment of the invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic perspective view of a motor body according to an embodiment of the present invention.
Fig. 2 is a perspective view of one direction of the motor driving end of the motor body shown in fig. 1.
Fig. 3 is a perspective view of the motor driving end of the motor body shown in fig. 1 in another direction.
Figure 4 is a perspective view of the drive end bearing chamber and guide plate of the motor body shown in figure 1.
In the above figures, the reference numerals used are as follows:
100 motor body
101 motor drive end
102 non-drive end of motor
103 air inlet
104 air outlet
11 casing
111 first end cap
112 second end cap
12 drive end bearing chamber
13 inner fan
131 fan rear disc
14 first baffle
141 vertical plate
142 sloping plate
15 rotating shaft
16 stator
17 Ventilation baffle
18 second baffle
20 wind-guiding structure
21 bottom baffle
211 air guiding opening
22 side baffle
221 baffle body
222 Top plate
23 air guide sheet
D direction of air flow
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.
Fig. 1 is a schematic perspective view of a motor body according to an embodiment of the present invention, please refer to fig. 1, in which the motor body 100 is a structure of a motor without a cooling fan housing, the motor body 100 of this embodiment has a motor driving end 101 and a motor non-driving end 102 opposite to the motor driving end 101, and the motor body 100 includes a housing 11, a driving end bearing chamber 12, an inner fan 13, and a wind guiding structure 20. The housing 11 includes a first end cap 111. The driving end bearing chamber 12 is located at the motor driving end 101 and is penetrated through the first end cover 111. The inner fan 13 is disposed in the housing 11 and spaced apart from the drive-end bearing chamber 12, and the inner fan 13 includes a fan rear disc 131, and the fan rear disc 131 faces the drive-end bearing chamber 12. The air guide structure 20 is located inside the housing 11, is disposed near the inner fan 13, and guides a part of air in the internal circulation air passage of the motor body 100 to a space between the fan rear disc 131 and the drive-end bearing chamber 12.
More specifically, the housing 11 is a hollow rectangular parallelepiped structure, the cooling fan housing is disposed on the housing 11, an air inlet 103 and an air outlet 104 are opened on a top plate of the housing 11, and the air inlet 103 and the air outlet 104 are used for communicating the housing 11 and the cooling fan housing. The first end cap 111 of the housing 11 is located at the motor drive end 101.
Fig. 2 is a perspective view of the motor driving end of the motor body shown in fig. 1 in one direction, and fig. 3 is a perspective view of the motor driving end of the motor body shown in fig. 1 in another direction, and please refer to fig. 2 and 3 together, the motor body further includes a driving end bearing, and the driving end bearing is disposed in the driving end bearing chamber 12. The inner fan 13 is a centrifugal fan.
The motor body 100 further includes a first baffle 14, a rotating shaft 15, a stator 16, a ventilation partition 17, a second baffle 18 and a rotor, the first baffle 14 is located between the stator 16 and the inner fan 13, the first baffle includes a vertical plate 141 and an inclined plate 142 connected to the vertical plate 141, the inclined plate 142 is located at the air outlet 104, and the inclined design can increase the air outlet 104.
The number of the ventilation partition plates 17 is two, two ventilation partition plates 17 are adjacently arranged at intervals for ventilating and supporting the stator 16, and an internal circulation air path of the motor can flow in the housing 11 through the ventilation partition plates 17. The housing 11 also includes a second end cap 112, and a second baffle 18 is located between the ventilation barrier 17 and the second end cap 112, which supports the stator 16.
The air guiding structure 20 includes a bottom baffle 21, a side baffle 22 and a plurality of air guiding sheets 23, wherein the bottom baffle 21 is disposed at the bottom of the casing 11 and is located below the inner fan 13.
The bottom baffle 21 is an arc-shaped plate, the bottom baffle 21 faces the side baffle 22, and an air guide opening 211 is formed between the bottom baffle 21 and the side baffle 22.
The side baffle 22 comprises a baffle body 221 and a top plate 222, the baffle body 221 is fixed at the bottom of the fan back plate 131, an arc-shaped groove is formed in the baffle body 221, and the bottom of the fan back plate 131 is located in the arc-shaped groove. The top plate 222 is connected to the baffle body 221 and perpendicular to the baffle body 221, and the top plate 222 and the baffle body 221 may be fixed by welding, or of course, they may be integrally formed. The side dams 22 divide the air path out of the inner fan into two paths, one of which is used to cool the drive end bearing housing 12.
Fig. 4 is a schematic perspective view of the drive end bearing chamber and the guide vane of the motor body shown in fig. 1, please refer to fig. 4 and fig. 1, the air guide vane 23 is fixed on the side wall of the drive end bearing chamber 12 and is located between the fan rear disc 131 and the drive end bearing chamber 12, and the air guide vane 23 is arranged at an interval. More specifically, the extending direction of the air guiding sheets 23 is perpendicular to the axial direction of the rotating shaft 15 of the motor body 100, the air guiding sheets 23 are uniformly arranged on the side wall of the driving end bearing chamber 12, and an air duct 231 is formed between adjacent air guiding sheets 23. The adjacent air guiding sheets 23 are equally spaced. The air guide sheets 23 play a role in guiding the flow and improve the flow and cooling effect.
The invention further provides a motor, which comprises the motor body 100 and a cooling fan cover, wherein the cooling fan cover is arranged on the motor body 100, is communicated with the motor body 100 and is used for cooling internal circulation air in the motor body 100. The cooling fan housing comprises an outer fan and a housing body, wherein a plurality of cooling pipes (not shown) are arranged in the housing body, and the cooling pipes are arranged in parallel and extend from one end of the housing body to the other end of the housing body.
When the cooling fan works, under the action of the external fan, external air is pumped into the cover body of the cooling fan cover, enters the cooling pipe from one end of the cooling pipe and flows out from the other end of the cooling pipe. The air in the internal circulation air path flows out of the motor body 100 from the air outlet 104 of the housing 11 and enters the cooling fan housing, exchanges heat with the cooling pipes in the cooling fan housing, flows into the motor body 100 from the air inlet 103 of the housing 11, then flows through the radial air duct of the rotor and the radial air duct of the stator, and then enters the cooling fan housing again under the driving of the internal fan 13, and circulates in this way. Because the inner fan 13 is a centrifugal fan, the inner fan 13 sucks in the inner circulation air along the axial direction and throws out the inner circulation air along the radial direction, and when the inner circulation air flows downwards along the radial direction, the inner circulation air is resisted by the bottom baffle 21 of the air guiding structure 20 and flows into the space between the fan rear disc 131 and the drive end bearing chamber 12 from the air guiding opening 211; then, the air between the fan back plate 131 and the driving-end bearing chamber 12 cools the driving-end bearing in the driving-end bearing chamber 12, and flows upward along the air channel 231 between the air guiding sheets 23 (i.e., along the direction D shown in fig. 4), and flows out of the air outlet 104 of the housing 11 and enters the cooling fan housing.
Compared with the prior art, a part of the air thrown by the inner fan 13 directly flows out from the air outlet 104, and the other part of the air thrown by the inner fan 13 is guided into the space between the driving-end bearing chamber 12 and the fan rear disc 131 through the air guide structure 20, so that the driving-end bearing in the driving-end bearing chamber 12 is effectively cooled and then flows out from the air outlet 104.
The motor body and the motor at least have the following advantages:
1. in the motor body and the motor, the air guide structure is arranged in the motor body and is positioned beside the inner fan, partial air of the inner circulation air path can be guided into a space between the rear disc of the fan and the bearing chamber at the driving end, and the bearing at the driving end is further cooled on the basis of radial ventilation and axial and radial mixed ventilation cooling, so that the cooling requirement of a high-power motor can be met.
2. In an embodiment of the motor body and the motor of the invention, the air guiding structure comprises a bottom baffle, a side baffle and an air guiding sheet, the side baffle comprises a baffle body and a top plate, the baffle body is fixed at the bottom of the fan rear disc, and the arrangement of the bottom baffle and the top plate can enable air circulating in the fan to flow between the fan rear disc and the drive end bearing chamber through the air guiding opening more easily.
3. In an embodiment of the motor body and the motor, the extending direction of the air guide plates of the air guide structure is perpendicular to the axial direction of the rotating shaft of the motor body, the air guide plates are uniformly distributed on the side wall of the bearing chamber of the driving end, an air channel is formed between the adjacent air guide plates, the air guide plates can enhance the heat dissipation effect, and the effective cooling of the bearing of the driving end is facilitated.
4. In the motor body and the motor in an embodiment of the invention, an air path is not directly led out from the non-driving end or the cooling fan cover to cool the bearing at the driving end, and the cooling effect of the stator and the rotor of the motor is not sacrificed.
5. In the motor body and the motor of the embodiment of the invention, the additionally arranged wind guide structure has the advantages of simple design, low cost, small process difficulty and obvious effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (9)

1. Motor body (100), have motor drive end (101) and with motor non-drive end relative motor drive end (101), its characterized in that includes:
a housing (11) including a first end cap (111);
the drive end bearing chamber (12) is positioned at the motor drive end (101) and penetrates through the first end cover (111);
an inner fan (13) disposed in the housing (11) and spaced apart from the drive-end bearing chamber (12), the inner fan (13) including a fan rear disc (131), the fan rear disc (131) facing the drive-end bearing chamber (12); and
an air guide structure (20) that is disposed inside the casing (11) and beside the inner fan (13) and that guides part of the air in the internal circulation air passage of the motor body (100) between the drive end bearing chamber (12) and the fan rear disk (131), the air guide structure (20) comprising:
a bottom baffle (21) disposed at the bottom of the casing (11) and located laterally below the inner fan (13);
the side baffle (22), the bottom baffle (21) faces the side baffle (22), and an air guide opening (211) is formed between the bottom baffle (21) and the side baffle (22); and
and the plurality of air guide sheets (23) are fixed on the side wall of the drive end bearing chamber (12) and are positioned between the fan rear disc (131) and the drive end bearing chamber (12), and the air guide sheets (23) are arranged at intervals.
2. The machine body (100) according to claim 1, characterized in that the bottom baffle (21) is an arc-shaped plate.
3. The electric machine body (100) according to claim 1, characterized in that the side guards (22) comprise:
a baffle body (221) fixed to the bottom of the fan rear disc (131); and
the top plate (222) is connected with the baffle body (221) and is perpendicular to the baffle body (221), and the top plate (222) and the air guide sheet (23) are respectively located on two sides of the fan rear disc (131).
4. The motor body (100) according to claim 1, wherein the extending direction of the wind-guiding sheets (23) is perpendicular to the axial direction of the rotating shaft (15) of the motor body (100), the wind-guiding sheets (23) are uniformly arranged on the side wall of the drive-end bearing chamber (12), and a ventilation channel (231) is formed between adjacent wind-guiding sheets (23).
5. The machine body (100) according to claim 4, wherein the adjacent air guiding fins (23) are equally spaced.
6. The machine body (100) according to claim 1, characterized in that the inner fan (13) is a centrifugal fan.
7. The electric machine body (100) of claim 1, further comprising:
a drive end bearing disposed within the drive end bearing chamber (12).
8. Electrical machine, characterized in that it comprises a machine body (100) according to any one of claims 1 to 7.
9. The electric machine of claim 8, further comprising:
and the cooling fan cover is arranged on the motor body (100), is communicated with the motor body (100) and is used for cooling internal circulation air in the motor body (100).
CN201810096506.5A 2018-01-31 2018-01-31 Motor body and motor Active CN110098688B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810096506.5A CN110098688B (en) 2018-01-31 2018-01-31 Motor body and motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810096506.5A CN110098688B (en) 2018-01-31 2018-01-31 Motor body and motor

Publications (2)

Publication Number Publication Date
CN110098688A CN110098688A (en) 2019-08-06
CN110098688B true CN110098688B (en) 2021-08-06

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Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1184568A (en) * 1995-05-16 1998-06-10 西门子公司 Electric motor drive
EP1353433A2 (en) * 2002-04-09 2003-10-15 Atlas Copco Electric Tools GmbH Electric motor with a ceramic shaft
CN201349153Y (en) * 2007-11-28 2009-11-18 松下电器产业株式会社 Brushless motor and air conditioner with same
WO2010002117A2 (en) * 2008-07-01 2010-01-07 텐진 대화 일렉트릭 머신너리 컴퍼니 리미티드 Impeller assembly with improved assembly efficiency and hot water boiler including the same
CN101625583A (en) * 2008-07-11 2010-01-13 英业达股份有限公司 Wind scooper
CN201563016U (en) * 2008-06-18 2010-08-25 索尤若驱动有限及两合公司 Motor
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CN203516181U (en) * 2013-07-16 2014-04-02 北京佩特来电器有限公司 High-flow-capacity double-layer fan and dual-inner-cooling generator with same
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CN203879801U (en) * 2014-06-04 2014-10-15 江苏友奥电器有限公司 Double-suction type centrifugal fan blade
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CN204610371U (en) * 2015-04-30 2015-09-02 中山大洋电机制造有限公司 The motor of a kind of motor blower fan and application thereof
CN205544736U (en) * 2015-11-30 2016-08-31 西门子公司 Motor fan casing structure and motor
CN106160339A (en) * 2015-03-25 2016-11-23 博西华电器（江苏）有限公司 Motor and the household electrical appliance with this motor
CN106300778A (en) * 2016-08-02 2017-01-04 天津飞旋科技研发有限公司 The pure air-cooled heat dissipation structure of magnetic suspension motor of impeller one
CN206099654U (en) * 2016-10-28 2017-04-12 杭州智酷电气科技有限公司 Take rotor and brushless DC motor of fan assembly spare
CN206099653U (en) * 2016-10-08 2017-04-12 上海川也电机有限公司 Induced draft from fanning cold type open motor
CN107005107A (en) * 2015-01-16 2017-08-01 西门子公司 Electric rotating machine with one side cooling and the method for one side cooling
CN206575273U (en) * 2016-12-22 2017-10-20 宁波纽新克电机股份有限公司 A kind of direct current induced-draught electric motor
CN206894415U (en) * 2017-06-17 2018-01-16 余姚市驰力微电机有限公司 A kind of radiating permanent magnet DC motor certainly

Patent Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1184568A (en) * 1995-05-16 1998-06-10 西门子公司 Electric motor drive
EP1353433A2 (en) * 2002-04-09 2003-10-15 Atlas Copco Electric Tools GmbH Electric motor with a ceramic shaft
CN201349153Y (en) * 2007-11-28 2009-11-18 松下电器产业株式会社 Brushless motor and air conditioner with same
CN201563016U (en) * 2008-06-18 2010-08-25 索尤若驱动有限及两合公司 Motor
WO2010002117A2 (en) * 2008-07-01 2010-01-07 텐진 대화 일렉트릭 머신너리 컴퍼니 리미티드 Impeller assembly with improved assembly efficiency and hot water boiler including the same
CN101625583A (en) * 2008-07-11 2010-01-13 英业达股份有限公司 Wind scooper
DE202012007328U1 (en) * 2012-07-31 2012-08-30 Siemens Aktiengesellschaft Dynamoelectric machine with an internal closed air cooling circuit
CN203516181U (en) * 2013-07-16 2014-04-02 北京佩特来电器有限公司 High-flow-capacity double-layer fan and dual-inner-cooling generator with same
CN203537138U (en) * 2013-09-18 2014-04-09 苏州永捷电机有限公司 Damping static impeller
CN203879801U (en) * 2014-06-04 2014-10-15 江苏友奥电器有限公司 Double-suction type centrifugal fan blade
CN204152811U (en) * 2014-09-29 2015-02-11 西门子公司 The fan of motor and motor thereof
CN107005107A (en) * 2015-01-16 2017-08-01 西门子公司 Electric rotating machine with one side cooling and the method for one side cooling
CN106160339A (en) * 2015-03-25 2016-11-23 博西华电器（江苏）有限公司 Motor and the household electrical appliance with this motor
CN204610371U (en) * 2015-04-30 2015-09-02 中山大洋电机制造有限公司 The motor of a kind of motor blower fan and application thereof
CN205544736U (en) * 2015-11-30 2016-08-31 西门子公司 Motor fan casing structure and motor
CN106300778A (en) * 2016-08-02 2017-01-04 天津飞旋科技研发有限公司 The pure air-cooled heat dissipation structure of magnetic suspension motor of impeller one
CN206099653U (en) * 2016-10-08 2017-04-12 上海川也电机有限公司 Induced draft from fanning cold type open motor
CN206099654U (en) * 2016-10-28 2017-04-12 杭州智酷电气科技有限公司 Take rotor and brushless DC motor of fan assembly spare
CN206575273U (en) * 2016-12-22 2017-10-20 宁波纽新克电机股份有限公司 A kind of direct current induced-draught electric motor
CN206894415U (en) * 2017-06-17 2018-01-16 余姚市驰力微电机有限公司 A kind of radiating permanent magnet DC motor certainly

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