CN106877577A - A kind of shaft extension is hinged with the totally enclosed motor of impeller - Google Patents
A kind of shaft extension is hinged with the totally enclosed motor of impeller Download PDFInfo
- Publication number
- CN106877577A CN106877577A CN201710254865.4A CN201710254865A CN106877577A CN 106877577 A CN106877577 A CN 106877577A CN 201710254865 A CN201710254865 A CN 201710254865A CN 106877577 A CN106877577 A CN 106877577A
- Authority
- CN
- China
- Prior art keywords
- rotor
- rotating shaft
- impeller
- fan housing
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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 shaft extension is hinged with the totally enclosed motor of impeller, including：Support；It is fixed on the end cap at two ends of stator and covering support axial direction of support inner chamber；The rotor of rotating shaft is fixed on, rotating shaft is supported on end cap through bearing；One shaft extension is hinged with receded disk impeller；The rotating shaft is from secondly end to the end position of rotor two section is tubulose；Rotor has the axial ventilation road at the end of insertion rotor two；The rotation body fan housing of a twisted rotary shaft is respectively set in the end of rotor two, 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 rotating shaft, and the tube wall of the rotating shaft section covered by the fan housing sets through hole；The opening of the shaft extension tubulose is positioned at the admittance area of the impeller.The design substantially reduces the temperature rise of motor, and especially the temperature rise of rotor, relatively simple for structure, and reliability is preferably and energy consumption is relatively low.
Description
Technical field
The present invention relates to a kind of totally enclosed motor, especially the cooling knot of the totally enclosed motor of shaft extension tipping impeller
Structure, in International Patent Classification (IPC), classification belongs to H02K9/06.
Background technology
The traditional design of middle-size and small-size totally enclosed motor air cooling structure is visible《Design of electrical motor》(Xi'an Communications University is old
Generation is female, the 1st edition, China Machine Press nineteen eighty-two Beijing), it stirs inner air by recycle heat by the impeller of rotor tip
To housing, further air-flow is produced to brush housing outer surface by the impeller of shaft extension attaching, the cooling effect is for temperature of rotor
The relatively low 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 electric rotating machine》With《Ventilation
Machine》(Huazhong Institute of Technology Li Qing is suitable, China Machine Press the 1st edition, Beijing in 1981).
The content of the invention
The technical problems to be solved by the invention are to propose a kind of totally enclosed motor, and its cooling system is than conventional junction
Structure substantially reduces the temperature rise of motor, especially the temperature rise of rotor, and relatively simple for structure, and reliability is preferably and energy consumption is relatively low.
The technical scheme that the present invention solves the technical problem is that a kind of shaft extension is hinged with the totally enclosed motor of impeller, bag
Include：
--- support；
--- it is fixed on the end cap at two ends of stator and covering support axial direction of support inner chamber；
--- the rotor of rotating shaft is fixed on, rotating shaft is supported on end cap through bearing；
--- a shaft extension is hinged with receded disk impeller；
Characterized in that, also including：
--- the rotating shaft is from secondly end to the end position of rotor two section is tubulose；
--- rotor has the axial ventilation road at the end of insertion rotor two；
--- respectively set the rotation body fan housing of a twisted rotary shaft, rotor-end where the big nose circle covering of fan housing in the end of rotor two
The opening of the ventilating duct, small nose circle is close to be placed on the rotating shaft, and the tube wall of the rotating shaft section covered by the fan housing sets through hole；
--- the opening of the shaft extension tubulose is positioned at the admittance area of the impeller.
The admittance area of impeller is typically to be covered towards the region of blade leading edge or measuring gauge pressure by certain enclosing
The region of negative pressure.During the motor operation, the rotation of rotating shaft transmission impeller is energized to air-flow, and the admittance area of impeller is in compared to air
Negative pressure, attracts the air outflow in shaft extension tubular opening, forms such as downstream flow：
--- the mouth of pipe 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
Rotating shaft section, pass through this section of through hole of tube wall, through the space in the fan housing enter rotor axial ventilation road, from the ventilating duct stream
After going out, through the space in the 2nd fan housing, the rotating shaft section of fan housing covering is reached, this section of through hole of tube wall is passed through, into rotating shaft pipe
It is interior, flowed out from the opening of the shaft extension, the admittance area of impeller is reached, air is discharged into by impeller.
The air-flow mainly to by way of rotor cooling, also have cooling effect to environment in machine where impeller and fan housing.Compare
Only air circulation in machine, flows into the outer air of the relatively low machine of temperature, is more beneficial for reducing the temperature rise of motor especially rotor.Outside machine
, by the housing by support and end cap encirclement, runner is whole by reliable closed isolation, in addition to axle, rotor and fan housing, does not connect for air
Other any parts in housing, especially such as winding electric insulating part are touched, motor still fully meets product standard on sealing
The requirement of shelter of shell-type motor.
It is that the opening of the shaft extension is institute that the present invention solves one of further design of technical scheme of the technical problem
Tubulose is stated in the opening of shaft extension end or/and the through hole of shaft extension section tube wall.Preferably the opening of design shaft extension is positioned at the impeller
The region that shroud and hub disk are surrounded.
The two of the further design of the technical scheme of the present invention solution technical problem are that the fan housing outer wall is axially stretched
Go out blade.When impeller rotates, the axially extended blade agitation air brushes stator winding end, is allowed to cool down.The structure also adds
Strong is the heat exchange of partition inner air and outer air with the fan housing, advantageously reduces the temperature rise in machine.
The axial outer end for being further designed at the axially extended blade sets honorable around the rotation of the rotating shaft.The rotation
Swivel face connects the axial outer end of each blade, is closed as one by one with the leaf road that blade is interval, and air outlet direction in leaf road is fixed
Sub- winding overhang inner headed face, makes all interior circulation air-flows pass through stator winding end, compared to unlimited leaf road, can strengthen to end
Cooling.Leaf road flow velocity is improved because of closing, and it is partition inner air and outer air heat exchange to strengthen with the fan housing, is conducive to further drop
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 rotating shaft, to guide before air-flow enters air intake vent, formation can
Improve prewhirling for airflow efficiency.
The blade of the receded disk impeller or/and the axially extended blade design of fan housing outer wall are backward, to improve effect
Rate.
Technical solution of the present invention and its modular design will be further illustrated in a specific embodiment.
Brief description of the drawings
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 embodiment of the present invention End cover for motor interior wall construction schematic diagram.
Specific embodiment
1st embodiment motor of the invention exists《Design of electrical motor》The base of enclosed motor traditional structure shown in middle Fig. 8-3
Improved on plinth and formed, as shown in Figure 1.The design that the motor continues to use traditional structure includes：
--- support 5, its outer surface has the ventilation slot 52 being easy between the convex tendon 51 of radiating and each convex tendon；
--- the end cap 70 at 5 axial direction of covering support, two ends；
--- the stator 3 of the inner chamber of support 5 is fixed on, stator 3 includes stator core and stator winding；
--- the rotor 2 of rotating shaft 1 is fixed on, rotor 2 includes rotor core, and rotating shaft 1 is supported on end cap 70 through bearing；
--- it is fixed on the receded disk impeller 41 of shaft extension 25.
Design modification includes：
--- the fan housing 42 to covering the impeller, its mesh plane for supplying outside atmosphere to flow into is closed, it is in shaft extension
The larger admittance area of impeller 41 of negative pressure；
--- rotor 2 is built-in type permanent-magnet rotor, sets a plurality of ventilating duct 6 for axially penetrating through rotor core；
--- the round table-like air intake cover 20 of twisted rotary shaft 2 is set, and its big nose circle enters in rotor left end covering ventilating duct 6
Mouth 61, small nose circle is tightly fastened in the cylindrical of rotating shaft 1, and that section of rotating shaft covered by outlet housing 20 is that tubulose and tube wall set as shown
6 through holes 23, the tubulose passes straight through to rotating shaft left end 38；
--- the round table-like outlet housing 26 of twisted rotary shaft 2 is set, and its big nose circle goes out in rotor right-hand member covering ventilating duct 6
Mouth 62, small nose circle is tightly fastened in the cylindrical of rotating shaft 1, and that section of rotating shaft covered by outlet housing 26 is that tubulose and tube wall set as shown
6 through holes 27, the tubulose passes straight through to rotating shaft right-hand member 28；
--- the axially extended backward type blade 12 of outer wall of air intake cover 20, the round platform of twisted rotary shaft 1 is set to the blade 12
Face 11.The round table surface 11 connects the axial outer end of each blade of blade 12, is closed as one by one with leaf that each blade is interval
Road, inner headed face of the leaf road air outlet 7 towards the stator winding end 10 positioned at stator left end；
--- the axially extended backward type blade 8 of outer wall of outlet housing 26, the round table surface of twisted rotary shaft 1 is set to the blade 8
14.The round table surface 14 connects the axial outer end of each blade of blade 8, is closed as one by one with the leaf road that each blade is interval,
Inner headed face of the leaf road air outlet 9 towards the stator winding end 10 positioned at stator right-hand member；
--- the inwall of end cap 70 has radiating ribs 71, and it is located at the concentric circles of rotating shaft 1 along the tangent line of direction of rotation, such as Fig. 2
It is shown.
During the motor operation, the driven impeller 41 of rotating shaft 1 rotates energizes to air-flow, the mouth of pipe of outside atmosphere axis of rotation left end
38 enter, and the rotating shaft section of the covering of air intake cover 20 is flow to along pipe, pass through this section of through hole of tube wall 23, enter through the space in the fan housing
Enter the axial ventilation road 6 of rotor, from after ventilating duct outflow, through the space in outlet housing 26, reach the rotating shaft of fan housing covering
Section, passes through this section of through hole of tube wall 27, into rotating shaft pipe, is flowed out from the opening 28 of shaft extension 25, reaches what fan housing 42 was closed
The larger admittance area of impeller 41 of negative pressure, is sucked by impeller 41, through the ventilation slot 52 on the periphery of fan housing 42, is discharged into air.
2nd embodiment motor of the invention is as shown in figure 3, impeller mainly to the 1st embodiment motor and its pacified
The shaft extension and fan housing of dress are improved, including：
--- the receded disk impeller 41 ' for being placed on shaft extension 25 is changed to straight shroud 21, hub disk 22 and is clipped in therebetween
Backward type blade 29 constitute.The inner circle and wheel hub fastening of shroud 21 are connected as in the cylindrical of shaft extension 25 ' with blade 29 and shroud
The inwall of the overall hub disk 22 of impeller is full circle plane, and the plane is opened with the tubulose that certain axial spacing covers the end of shaft extension 25
Mouthful, and the tube wall of section sets 2 through holes 24 as shown between the inner circle and hub disk 22 of shroud 21, through hole 24 needs insertion wheel simultaneously
Hub；
--- fan housing 42 ' now only rises and prevents the protective action of mechanical hazard, still can use《Design of electrical motor》Shown in middle Fig. 8-3
Traditional structure.
During the motor operation, the rotation of the driven impeller of rotating shaft 1 is energized to air-flow, the mouth of pipe 38 of outside atmosphere axis of rotation left end
Into, the rotating shaft section of the covering of air intake cover 20 is flow to along pipe, this section of through hole of tube wall 23 is passed through, enter through the space in the fan housing
The axial ventilation road 6 of rotor, from after ventilating duct outflow, through the space in outlet housing 26, reaches the rotating shaft section of fan housing covering,
This section of through hole of tube wall 27 is passed through, into rotating shaft pipe, is flowed out from the opening 28 of shaft extension 25 and tube wall through hole 24, before reaching impeller
The space 4 that the face of cylinder where disk 21, hub disk 22 and the inlet side of blade 29 surrounds, is sucked by impeller, along blade 29 and shroud 21, after
The road of leaf one by one of the composition of disk 22 radially throws away, and is discharged into air.
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 set to blade 12, to leaf
The round table surface 14 that piece 8 is set, the directrix of the rotary body of its generation twisted rotary shaft 1 is straight line, and manufacturing process is fairly simple.Also may be used
Using the camber line using appropriate curvature as other rotation dignity of directrix, to obtain more preferably aeroperformance；
--- shroud 21 can also be changed to 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 axle, by experiment
Or hydrodynamics and mechanical calculations, appropriate adjustment；
--- to increase the cooling air-flow to support surface, fan housing 42 also can suitably perforate, now fan housing 42 closed
The negative pressure of the admittance area of impeller 41 can decrease where the opening of shaft extension 25；
--- the opening of shaft extension 25 ' can also be closed opening 28 using only tube wall through hole 24, and by the inner circle of hub disk 22
It is connected with wheel hub, is fixed on the cylindrical of shaft extension, increases mechanical strength；
--- each opening, the mouth of pipe and air port, more appropriate shape can be selected by experiment or hydrodynamics method；
--- each blade 29,12,8 can also be changed to 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 be by experiment or fluid
Mechanics Calculation, selects more appropriate section or/and surface configuration.
Claims (5)
1. a kind of shaft extension is hinged with the totally enclosed motor of impeller, including：
--- support；
--- it is fixed on the end cap at two ends of stator and covering support axial direction of support inner chamber；
--- the rotor of rotating shaft is fixed on, rotating shaft is supported on end cap through bearing；
--- a shaft extension is hinged with receded disk impeller；
Characterized in that, also including：
--- the rotating shaft is from secondly end to the end position of rotor two section is tubulose；
--- rotor has the axial ventilation road at the end of insertion rotor two；
--- the rotation body fan housing of a twisted rotary shaft is respectively set in the end of rotor two, the big nose circle of fan housing is covered described in the rotor-end of place
The opening of ventilating duct, small nose circle is close to be placed on the rotating shaft, and the tube wall of the rotating shaft section covered by the fan housing sets through hole；
--- the opening of the shaft extension tubulose is positioned at the admittance area of the impeller.
2. according to motor described in claim 1, it is characterised in that：The axially extended blade of fan housing outer wall.
3. according to motor described in claim 2, it is characterised in that：The axial outer end of the axially extended blade is set around institute
State the rotation dignity of rotating shaft.
4. according to motor described in claim 1 or claim 2 or claim 3, it is characterised in that：The end cap inwall tool
There are radiating ribs.
5. according to motor described in claim 4, it is characterised in that：Radiating ribs in the end cap are located at the concentric circles of rotating 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106877577A true CN106877577A (en) | 2017-06-20 |
| CN106877577B CN106877577B (en) | 2019-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710254865.4A Active CN106877577B (en) | 2017-04-18 | 2017-04-18 | A kind of axis stretches the totally enclosed motor of tipping impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106877577B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165842A (en) * | 2017-06-30 | 2017-09-15 | 叶露微 | A kind of preventing splash low power ventilation fan |
| 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 |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006230155A (en) * | 2005-02-21 | 2006-08-31 | Toshiba Corp | Dynamo-electric machine |
| CN1945935A (en) * | 2006-09-22 | 2007-04-11 | 叶露微 | Small power cage type induction motor |
| WO2009060758A1 (en) * | 2007-11-09 | 2009-05-14 | Toyota Jidosha Kabushiki Kaisha | 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 |
-
2017
- 2017-04-18 CN CN201710254865.4A patent/CN106877577B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006230155A (en) * | 2005-02-21 | 2006-08-31 | Toshiba Corp | Dynamo-electric machine |
| CN1945935A (en) * | 2006-09-22 | 2007-04-11 | 叶露微 | Small power cage type induction motor |
| WO2009060758A1 (en) * | 2007-11-09 | 2009-05-14 | Toyota Jidosha Kabushiki Kaisha | 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 | Publication date |
|---|---|
| CN106877577B (en) | 2019-06-18 |
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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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