CN106877577B - A kind of axis stretches the totally enclosed motor of tipping impeller - Google Patents
A kind of axis stretches the totally enclosed motor of tipping impeller Download PDFInfo
- Publication number
- CN106877577B CN106877577B CN201710254865.4A CN201710254865A CN106877577B CN 106877577 B CN106877577 B CN 106877577B CN 201710254865 A CN201710254865 A CN 201710254865A CN 106877577 B CN106877577 B CN 106877577B
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- Prior art keywords
- shaft
- rotor
- impeller
- fan housing
- axis stretches
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Classifications
-
- 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
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
A kind of axis stretches the totally enclosed motor of tipping impeller, comprising: base；It is fixed on the stator of base inner cavity and the end cap at axial two ends of covering base；It is fixed on the rotor of shaft, shaft is supported on end cap through bearing；One axis stretches tipping receded disk impeller；The shaft is from secondly end to two end position of rotor section is tubulose；Rotor has the axial ventilation road at perforation two end of rotor；The rotation body fan housing of a twisted rotary shaft is respectively set in two end of rotor, the opening of ventilating duct described in rotor-end where the big nose circle covering of fan housing, small nose circle is close to be placed on the shaft, sets through-hole by the tube wall for the shaft section that the fan housing covers；The opening that the axis stretches tubulose is located at the admittance area of the impeller.The design is substantially reduced the temperature rise of the temperature rise of motor, especially rotor, relatively simple for structure, and reliability is preferably and energy consumption is lower.
Description
Technical field
The present invention relates to the cooling knots that a kind of totally enclosed motor, especially axis stretch the totally enclosed motor of tipping impeller
Structure, in International Patent Classification (IPC), classification belongs to H02K9/06.
Background technique
(Xi'an Communications University is old for the traditional design of middle-size and small-size totally enclosed motor air cooling structure visible " design of electrical motor "
Generation is female, the 1st edition, China Machine Press nineteen eighty-two Beijing), inner air is stirred for recycle heat by the impeller of rotor tip
To shell, air-flow is further generated by the impeller that axis stretches attaching and brushes housing outer surface, the cooling effect is for temperature of rotor
The lower motor of limit value, especially steromotor owe ideal, and so far there are no properly improves.
Term of the present invention is also shown standard GB/T/T 2900.25 " electrotechnical terminology rotating electric machine " and " ventilation
Machine " (Huazhong Institute of Technology Li Qingyi, China Machine Press the 1st edition, Beijing in 1981).
Summary of the invention
The technical problem to be solved by the present invention is to propose a kind of totally enclosed motor, cooling system is than conventional junction
Structure is substantially reduced the temperature rise of the temperature rise of motor, especially rotor, and relatively simple for structure, and reliability is preferably and energy consumption is lower.
The technical solution that the present invention solves the technical problem is that a kind of axis stretches the totally enclosed motor of tipping impeller, packet
It includes:
--- base；
--- it is fixed on the stator of base inner cavity and the end cap at axial two ends of covering base；
--- it is fixed on the rotor of shaft, shaft is supported on end cap through bearing；
--- an axis stretches tipping receded disk impeller；
It is characterized by further comprising:
--- the shaft is from secondly end to two end position of rotor section is tubulose；
--- rotor has the axial ventilation road at perforation two end of rotor；
--- the rotation body fan housing of a twisted rotary shaft, rotor-end where the big nose circle covering of fan housing are respectively set in two end of rotor
The opening of the ventilating duct, small nose circle is close to be placed on the shaft, sets through-hole by the tube wall for the shaft section that the fan housing covers；
--- the opening that the axis stretches tubulose is located at the admittance area of the impeller.
The admittance area of impeller is usually to be covered by certain enclosing towards the region of blade leading edge or measuring gauge pressure to be in
The region of negative pressure.When the motor operation, the rotation of rotating shaft transmission impeller energizes to air-flow, and the admittance area of impeller is in compared to atmosphere
Negative pressure attracts axis to stretch the outflow of the air in tubular opening, forms such as downstream process:
--- the nozzle of the non-impeller installation end of the outside atmosphere axis of rotation enters, and the 1st fan housing covering is flow to along pipe
Shaft section, pass through the through-hole of this section of tube wall, the axial ventilation road of rotor entered through the space in the fan housing, from the ventilating duct stream
After out, through the space in the 2nd fan housing, the shaft section of fan housing covering is reached, the through-hole of this section of tube wall is passed through, into shaft pipe
Opening outflow that is interior, stretching from the axis, reaches the admittance area of impeller, is discharged into atmosphere by impeller.
The air-flow mainly to by way of rotor it is cooling, to environment also has cooling effect in machine where impeller and fan housing.It compares
Only air circulation in machine flows into the outer air of the lower machine of temperature, is more advantageous to the temperature rise for reducing motor especially rotor.Outside machine
Air passes through the shell surrounded by base and end cap, and runner whole process is not connect in addition to axis, rotor and fan housing by reliable closed isolation
Other any parts, especially such as winding electric insulating part in shell are touched, motor still fully meets product standard about envelope
The requirement of shelter of shell-type motor.
The present invention solve the technical problem technical solution further design first is that, the opening that the axis is stretched is institute
State the through-hole that opening or/and axis of the tubulose in axle stretch end portion stretch section tube wall.The opening that preferably design axis is stretched is located at the impeller
The region that shroud and hub disk surround.
The present invention solve the technical problem technical solution further design second is that, the fan housing outer wall is axially stretched
Blade out.When impeller rotates, which brushes stator winding end, is allowed to cooling.The structure also adds
By force using the fan housing as the heat exchange of partition inner air and outer air, the temperature rise in machine is advantageously reduced.
The rotation dignity for surrounding the shaft is arranged in the axial outer end for being further designed at the axially extended blade.The rotation
The axial outer end connection for turning each blade of face handle, is closed as one by one using blade as the leaf road at interval, and air outlet direction in leaf road is fixed
Sub- winding overhang inner headed face makes all interior circulating currents pass through stator winding end, compares open leaf road, can enhance to end
Cooling.Leaf road flow velocity is improved because of closing, reinforces being conducive to further drop using the fan housing as partition inner air and outer air heat exchange
Temperature rise in low machine.
At the same time, preferably designing the end cap or/and inboard wall of base has radiating ribs, to increase heat exchange area；And
And preferably the radiating ribs in end cap are designed on the tangent line of the concentric circles of shaft, to guide, formation can before air-flow enters air port
Improve prewhirling for airflow efficiency.
The blade of the receded disk impeller or/and the axially extended blade design of fan housing outer wall be it is backward, with improve effect
Rate.
Technical solution of the present invention and its modular design will further illustrate in a specific embodiment.
Detailed description of the invention
Fig. 1 is the 1st embodiment electric motor structure schematic diagram of the invention.
Fig. 2 is the 2nd embodiment electric motor structure schematic diagram of the invention.
Fig. 3 is End cover for motor inner wall structure diagram of the embodiment of the present invention.
Specific embodiment
The base of 1st embodiment motor enclosed motor traditional structure shown in Fig. 8-3 in " design of electrical motor " of the invention
It is improved on plinth, as shown in Figure 1.The design that the motor continues to use traditional structure includes:
--- base 5, outer surface have the ventilation slot 52 between convex ribs 51 and each convex ribs convenient for heat dissipation；
--- the end cap 70 at axial two ends of covering base 5；
--- it is fixed on the stator 3 of 5 inner cavity of base, stator 3 includes stator core and stator winding；
--- it is fixed on the rotor 2 of shaft 1, rotor 2 includes rotor core, and shaft 1 is supported on end cap 70 through bearing；
--- it is fixed on the receded disk impeller 41 that axis stretches 25.
Design is modified
--- to the fan housing 42 for covering the impeller, its mesh plane flowed into for outside atmosphere is closed, axis is stretched and is in
Biggish 41 admittance area of impeller of negative pressure；
--- rotor 2 is built-in type permanent-magnet rotor, and a plurality of ventilating duct 6 for axially penetrating through rotor core is arranged；
--- setting twisted rotary shaft 2 round table-like air intake cover 20, big nose circle in rotor left end covering ventilating duct 6 into
Mouth 61, small nose circle are tightly fastened in the outer circle of shaft 1, and by that section of shaft that outlet housing 20 covers be tubulose and tube wall is set as shown
6 through-holes 23, the tubulose pass straight through to shaft left end 38；
--- the round table-like outlet housing 26 of setting twisted rotary shaft 2, big nose circle go out in rotor right end covering ventilating duct 6
Mouth 62, small nose circle are tightly fastened in the outer circle of shaft 1, and by that section of shaft that outlet housing 26 covers be tubulose and tube wall is set as shown
6 through-holes 27, the tubulose pass straight through to shaft right end 28；
--- the axially extended backward type blade 12 of the outer wall of air intake cover 20, to the rotary table of the blade 12 setting twisted rotary shaft 1
Face 11.The round table surface 11 connects the axial outer end of each blade of blade 12, is closed as one by one using each blade as the leaf at interval
Road, inner headed face of the leaf road air outlet 7 towards the stator winding end 10 for being located at stator left end；
--- the axially extended backward type blade 8 of the outer wall of outlet housing 26, to the round table surface of the blade 8 setting twisted rotary shaft 1
14.The round table surface 14 connects the axial outer end of each blade of blade 8, is closed as one by one using each blade as the leaf road at interval,
Inner headed face of the leaf road air outlet 9 towards the stator winding end 10 for being located at stator right end；
--- 70 inner wall of end cap has radiating ribs 71, is located at 1 concentric circles of shaft along the tangent line of direction of rotation, such as Fig. 2
It is shown.
When the motor operation, the rotation of 1 driven impeller 41 of shaft energizes to air-flow, the nozzle of outside atmosphere axis of rotation left end
38 enter, flow to along pipe air intake cover 20 covering shaft section, pass through the through-hole 23 of this section of tube wall, through the space in the fan housing into
The axial ventilation road 6 for entering rotor, through the space in outlet housing 26, reaches the shaft of fan housing covering from after ventilating duct outflow
Section, passes through the through-hole 27 of this section of tube wall, and into shaft pipe, the opening 28 for stretching 25 from axis flows out, and it is closed to reach 42 institute of fan housing
Biggish 41 admittance area of impeller of negative pressure, is sucked by impeller 41, and the ventilation slot 52 through 42 periphery of fan housing is discharged into atmosphere.
2nd embodiment motor of the invention is as shown in figure 3, mainly to the impeller of the 1st embodiment motor and its pacified
The axis of dress is stretched and fan housing improves, comprising:
--- be placed on axis stretch 25 receded disk impeller 41 ' be changed to straight shroud 21, hub disk 22 and be clipped in therebetween
Backward type blade 29 form.The inner circle and wheel hub fastening of shroud 21 stretch 25 ' outer circle in axis, are connected as with blade 29 with shroud
The inner wall of the hub disk 22 of impeller entirety is full circle plane, which is opened with the tubulose that certain axial spacing covering axis stretches 25 ends
Mouthful, and the tube wall of section sets 2 through-holes 24 as shown between the inner circle of shroud 21 and hub disk 22, through-hole 24 need to penetrate through wheel simultaneously
Hub；
--- fan housing 42 ' only acts the protective action for preventing mechanical hazard at this time, in still available " design of electrical motor " shown in Fig. 8-3
Traditional structure.
When the motor operation, the rotation of 1 driven impeller of shaft energizes to air-flow, the nozzle 38 of outside atmosphere axis of rotation left end
Into, flow to along pipe air intake cover 20 covering shaft section, pass through the through-hole 23 of this section of tube wall, through in the fan housing space enter
The axial ventilation road 6 of rotor, through the space in outlet housing 26, reaches the shaft section of fan housing covering from after ventilating duct outflow,
The through-hole 27 for passing through this section of tube wall stretches 25 opening 28 from axis and tube wall through-hole 24 flows out, before reaching impeller into shaft pipe
The space 4 that disk 21, hub disk 22 and cylindrical surface where blade 29 inlet side surround, is sucked by impeller, along blade 29 and shroud 21, after
The road of leaf one by one that disk 22 forms radially is thrown away, and is discharged into atmosphere.
The present embodiment can have following design to change:
--- the round table-like air intake cover 20 of twisted rotary shaft 1, outlet housing 26 and the round table surface 11 that blade 12 is arranged, to leaf
The round table surface 14 that piece 8 is arranged, the directrix for generating the rotary body of twisted rotary shaft 1 is straight line, and manufacturing process is fairly simple.It can also
Using the camber line using appropriate curvature as other rotations of directrix dignity, to obtain more preferably aeroperformance；
--- shroud 21 is also readily modified as arc, to obtain more preferably aeroperformance；
--- the number and shape of tube wall through-hole 23,27,24, the influence of visual flow resistance and the intensity to axis pass through experiment
Or hydrodynamics and mechanical calculations, appropriate adjustment；
--- to increase to the cooling air-flow on base surface, fan housing 42 can also appropriate aperture, 42 institute of fan housing is closed at this time
The negative pressure that axis stretches 25 opening place 41 admittance area of impeller can decrease；
--- tube wall through-hole 24 can also be used only in the opening that axis stretches 25 ', opening 28 be closed, and by the inner circle of hub disk 22
It is connect with wheel hub, is fixed on the outer circle that axis is stretched, to increase mechanical strength；
--- each opening, nozzle and air port can select more appropriate shape by experiment or hydrodynamics method；
--- each blade 29,12,8 is also readily modified as radial, and manufacturing process can simplify；
--- the cooling system runner needs to take into account flow resistance, heat exchange surface area and flow velocity everywhere, can pass through experiment or fluid
Mechanics Calculation selects more appropriate section or/and surface shape.
Claims (4)
1. the totally enclosed motor that a kind of axis stretches tipping impeller, comprising:
--- base；
--- it is fixed on the stator of base inner cavity and the end cap at axial two ends of covering base；
--- it is fixed on the rotor of shaft, shaft is supported on end cap through bearing；
--- an axis stretches tipping receded disk impeller；
It is characterized by further comprising:
--- the shaft is from secondly end to two end position of rotor section is tubulose；
--- rotor has the axial ventilation road at perforation two end of rotor；
--- the rotation body fan housing of a twisted rotary shaft is respectively set in two end of rotor, the big nose circle of fan housing covers described in the rotor-end of place
The opening of ventilating duct, small nose circle is close to be placed on the shaft, sets through-hole by the tube wall for the shaft section that the fan housing covers；
--- the opening that the axis stretches tubulose is located at the admittance area of the impeller；
--- the axially extended blade of fan housing outer wall.
2. according to motor described in claim 1, it is characterised in that: the axial outer end of the axially extended blade is arranged around institute
State the rotation dignity of shaft.
3. according to motor described in claim 1 or claim 2, it is characterised in that: the end cap inner wall has radiating ribs.
4. according to motor described in claim 3, it is characterised in that: the radiating ribs in the end cap are located at the concentric circles of shaft
On tangent line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710254865.4A CN106877577B (en) | 2017-04-18 | 2017-04-18 | A kind of axis stretches the totally enclosed motor of tipping impeller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710254865.4A CN106877577B (en) | 2017-04-18 | 2017-04-18 | A kind of axis stretches the totally enclosed motor of tipping impeller |
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| Publication Number | Publication Date |
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| CN106877577A CN106877577A (en) | 2017-06-20 |
| CN106877577B true CN106877577B (en) | 2019-06-18 |
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| CN201710254865.4A Active CN106877577B (en) | 2017-04-18 | 2017-04-18 | A kind of axis stretches the totally enclosed motor of tipping impeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107165842A (en) * | 2017-06-30 | 2017-09-15 | 叶露微 | A kind of preventing splash low power ventilation fan |
| CN109391072A (en) * | 2017-08-14 | 2019-02-26 | 中车株洲电力机车研究所有限公司 | A kind of railway trunk line locomotive vehicle and its permanent magnet synchronous traction motor |
| CN108539888A (en) * | 2018-03-30 | 2018-09-14 | 合肥巨动力系统有限公司 | A kind of permanent-magnetic synchronous motor rotor radiator structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006230155A (en) * | 2005-02-21 | 2006-08-31 | Toshiba Corp | Dynamo-electric machine |
| CN100433509C (en) * | 2006-09-22 | 2008-11-12 | 江门市金羚排气扇制造有限公司 | Small power cage type induction motor |
| JP2009118712A (en) * | 2007-11-09 | 2009-05-28 | Toyota Motor Corp | Dynamo-electric machine |
| CN205677862U (en) * | 2016-06-20 | 2016-11-09 | 上海马拉松·革新电气有限公司 | A kind of centrifugal fan for three-phase brushless alternating-current generator |
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Effective date of registration: 20190507 Address after: 529040 No. 336 Qinglan Road, Jiangmen High-tech Development Zone, Guangdong Province Applicant after: Hanyu Group Co., Ltd. Address before: 529020, 4 of the East dike garden, Pengjiang Road, Pengjiang, Jiangmen, 102 Applicant before: Ye Luwei |
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