CN112928856A - Totally-enclosed motor with stable internal pressure - Google Patents
Totally-enclosed motor with stable internal pressure Download PDFInfo
- Publication number
- CN112928856A CN112928856A CN202110279990.7A CN202110279990A CN112928856A CN 112928856 A CN112928856 A CN 112928856A CN 202110279990 A CN202110279990 A CN 202110279990A CN 112928856 A CN112928856 A CN 112928856A
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- China
- Prior art keywords
- end cover
- rear sealing
- air bag
- sealing end
- motor
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- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 230000001681 protective effect Effects 0.000 claims description 31
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 29
- 229910052782 aluminium Inorganic materials 0.000 claims description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract 2
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- 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
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Frames (AREA)
Abstract
一种内压稳定的全封闭电机，包括定子、转子、转子轴、前密封端盖和后密封端盖，定子、前密封端盖和后密封端盖围设有密封的腔槽，腔槽内插设有转子，转子上插接固定有转子轴，转子轴的一端伸出前密封端盖，后密封端盖的中部成型有圆形凸台，转子轴的另一端通过轴承铰接在后密封端盖的圆形凸台内；圆形凸台四周的后密封端盖上成型有若干个通气孔，后密封端盖的圆形凸台上插套有环形的气囊，气囊的一侧端面上成型有若干个与气囊内腔相连通的插头，插头插接在后密封端盖的通气孔内。它在电机的外侧增设了可以平衡电机内压的气囊，减少电机运行发热、内压增大对全封闭电机的不良影响；同时，电机内外不交换空气，在腐蚀环境中提高了电机寿命。
A fully enclosed motor with stable internal pressure, comprising a stator, a rotor, a rotor shaft, a front sealing end cover and a rear sealing end cover, the stator, the front sealing end cover and the rear sealing end cover are surrounded by a sealed cavity groove, and the cavity groove A rotor is inserted, a rotor shaft is inserted and fixed on the rotor, one end of the rotor shaft protrudes from the front sealing end cover, the middle of the rear sealing end cover is formed with a circular boss, and the other end of the rotor shaft is hinged to the rear sealing end cover through a bearing. A number of ventilation holes are formed on the rear sealing end cover around the circular boss, and an annular air bag is inserted and sleeved on the circular boss of the rear sealing end cover, and one end face of the air bag is formed with A plurality of plugs communicated with the inner cavity of the airbag, and the plugs are inserted into the ventilation holes of the rear sealing end cover. It adds an airbag on the outside of the motor that can balance the internal pressure of the motor to reduce the adverse effects of the motor running heat and the increase of internal pressure on the fully enclosed motor; at the same time, the air inside and outside the motor is not exchanged, which improves the motor life in a corrosive environment.
Description
The technical field is as follows:
the invention relates to the technical field of fully-enclosed motors, in particular to a fully-enclosed motor with stable internal pressure.
Background art:
the existing totally-enclosed motor is a structural form that air around the motor is not communicated with the internal air of the motor and a closed shell is arranged or an inner cavity of a stator of the motor forms a totally-enclosed structure; in the operation process of the fully-closed motor, heat is prevented from being generated, the generated heat can cause the air in the sealing cavity groove in the fully-closed motor to expand, the pressure in the fully-closed motor is increased, the increased internal pressure can influence the normal operation of the fully-closed motor, and even the motor deforms, the internal sealing cavity groove leaks and the motor is damaged and scrapped.
The invention content is as follows:
the invention aims to overcome the defects of the prior art and provides a fully-closed motor with stable internal pressure, wherein an air bag capable of balancing the internal pressure of the motor is additionally arranged on the outer side of the motor, so that the adverse effect of the operation heating of the motor on the fully-closed motor is reduced; meanwhile, air is not exchanged between the inside and the outside of the motor, so that the service life of the motor is prolonged in a corrosive environment.
A totally-enclosed motor with stable internal pressure comprises a stator, a rotor shaft, a front sealing end cover and a rear sealing end cover of the motor, wherein a sealed cavity groove is surrounded by the stator, the front sealing end cover and the rear sealing end cover; the rear sealing end cover around the circular boss is formed with a plurality of vent holes, the circular boss of the rear sealing end cover is inserted and sleeved with an annular air bag, the end face of the air bag, close to one side of the rear sealing end cover, is formed with a plurality of plugs communicated with the inner cavity of the air bag, and the plugs are inserted and connected in the vent holes of the rear sealing end cover.
Preferably, the number of the plugs on the air bag is equal to that of the vent holes on the rear sealing end cover, the number of the vent holes is at least three, and the vent holes are uniformly distributed in an annular mode around the central axis of the rear sealing end cover.
Preferably, the outer wall of the plug on the air bag presses against the inner wall of the vent hole of the rear sealing end cover, an annular retainer ring is formed at the head of the plug, and the retainer ring presses against the inner end face of the rear sealing end cover.
Preferably, the air bag is circular, and the inner wall of the air bag is elastically pressed on the circular boss of the rear sealing end cover.
Preferably, glue is coated on the inner wall of the air bag and the end face of the air bag close to one side of the rear sealing end cover, and the inner wall of the air bag and the end face of the air bag are respectively stuck and fixed on the outer end face of the sealing end cover and the outer wall of the circular boss.
Preferably, a circular aluminum end plate is arranged between the rear sealing end cover and the air bag, a circular concave table opposite to the circular boss is formed on the aluminum end plate, the air bag is inserted and sleeved on the circular concave table of the aluminum end plate, and a through hole opposite to the plug is formed on the aluminum end plate; an annular protective cover is formed on the outer ring of the aluminum end plate, and one end of the protective cover close to the rear sealing end cover is inserted and fixed on the rear sealing end cover; and a stud is formed in the middle of the aluminum end plate, a protective cover plate is screwed on the stud, and the outer ring of the protective cover plate abuts against the inner wall of the protective cover.
Preferably, a heat conduction silica gel layer is arranged between the aluminum end plate and the rear sealing end cover.
Preferably, the protective cover plate on the inner side of the air bag is provided with air holes in a forming mode, the protective cover plate is provided with nuts, and the nuts are in threaded connection with the studs.
Preferably, a plurality of radiating plates are fixed on the outer wall of the protective cover of the aluminum end plate, and the radiating plates are uniformly distributed in an annular shape around the central axis of the protective cover.
The invention has the beneficial effects that:
1. the air bag capable of balancing the internal pressure of the motor is additionally arranged on the outer side of the motor, so that the adverse influence of the operation heating and the internal pressure increase of the motor on the fully-closed motor is reduced; meanwhile, air is not exchanged between the inside and the outside of the motor, so that the service life of the motor is prolonged in a corrosive environment.
2. The heat dissipation protection structure is arranged between the motor and the air bag, so that the air bag can be protected, and the heat dissipation effect of the motor can be improved.
Description of the drawings:
FIG. 1 is a schematic perspective view of a motor in a cold state according to the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of the motor in a cold state according to the present invention;
FIG. 3 is a schematic perspective view of the motor of the present invention in a heat engine state;
FIG. 4 is a schematic view of the motor in a heat engine state, partially in section;
fig. 5 is a schematic view of the motor with an aluminum end plate structure.
In the figure: 1. a stator; 2. a rotor shaft; 3. a front seal end cap; 4. sealing the end cover at the back; 41. a circular boss; 42. a vent hole; 5. an air bag; 51. a plug; 6. a bearing; 7. an aluminum end plate; 71. a protective cover; 72. a stud; 8. a heat conductive silica gel layer; 9. a protective cover plate; 91. air holes are formed; 10. a heat sink sheet; 11. and a nut.
The specific implementation mode is as follows:
example (b): as shown in fig. 1 to 5, the totally-enclosed motor with stable internal pressure comprises a stator 1, a rotor shaft 2, a front sealing end cover 3 and a rear sealing end cover 4 of the motor, wherein a sealed cavity groove is defined by the stator 1, the front sealing end cover 3 and the rear sealing end cover 4, the rotor is inserted in the cavity groove, the rotor shaft 2 is fixedly inserted on the rotor, one end of the rotor shaft 2 extends out of the front sealing end cover 3, a circular boss 41 which protrudes outwards is formed in the middle of the rear sealing end cover 4, an outer ring of a bearing 6 is fixedly inserted in the circular boss 41, and the other end of the rotor shaft 2 is fixedly inserted in an inner ring of the bearing 6; a plurality of vent holes 42 are formed in the rear sealing end cover 4 around the circular boss 41, an annular air bag 5 is inserted and sleeved on the circular boss 41 of the rear sealing end cover 4, a plurality of plugs 51 communicated with the inner cavity of the air bag 5 are formed on the end face of the air bag 5 close to one side of the rear sealing end cover 4, and the plugs 51 are inserted and connected into the vent holes 42 of the rear sealing end cover 4.
Preferably, the number of the plugs 51 on the airbag 5 is equal to the number of the vent holes 42 on the rear end cap 4, the number of the vent holes 42 is at least three, and the vent holes 42 are uniformly distributed in a ring shape around the central axis of the rear end cap 4.
Preferably, the outer wall of the plug 51 on the airbag 5 presses against the inner wall of the vent hole 42 of the rear end cap 4, and the head of the plug 51 is formed with an annular retainer ring which presses against the inner end face of the rear end cap 4.
Preferably, the air bag 5 is circular, and the inner wall of the air bag 5 is elastically pressed against the circular boss 41 of the rear sealing end cover 4.
Preferably, glue is coated on the inner wall of the air bag 5 and the end face of the air bag 5 close to the rear sealing end cover 4, and the inner wall of the air bag 5 and the end face of the air bag 5 are respectively stuck and fixed on the outer end face of the sealing end cover 4 and the outer wall of the circular boss 41.
Preferably, a circular aluminum end plate 7 is arranged between the rear sealing end cover 4 and the air bag 5, a circular concave table opposite to the circular convex table 41 is formed on the aluminum end plate 7, the air bag 5 is inserted and sleeved on the circular concave table of the aluminum end plate 7, and a through hole opposite to the plug 51 is formed on the aluminum end plate 7; an annular protective cover 71 is formed on the outer ring of the aluminum end plate 7, and one end, close to the rear sealing end cover 4, of the protective cover 71 is inserted and fixed on the rear sealing end cover 4; a stud 72 is formed in the middle of the aluminum end plate 7, a protective cover plate 9 is screwed on the stud 72, and the outer ring of the protective cover plate 9 abuts against the inner wall of the protective cover 71.
Preferably, a heat conduction silica gel layer 8 is arranged between the aluminum end plate 7 and the rear sealing end cover 4.
Preferably, the protective cover plate 9 on the inner side of the air bag 5 is formed with an air hole 91, the protective cover plate 9 is provided with a nut 11, and the nut 11 is screwed on the stud 72.
Preferably, a plurality of radiating plates 10 are fixed on the outer wall of the protective cover 71 of the aluminum end plate 7, and the radiating plates 10 are uniformly distributed in a ring shape around the central axis of the protective cover 71.
The working principle is as follows: the invention is a totally-enclosed motor with stable internal pressure, the totally-enclosed motor is mainly additionally provided with an air bag 5 which can be communicated with a sealing cavity groove in the motor, when the totally-enclosed motor does not operate, namely in a cold state, the air bag 5 is shriveled, as shown in figures 1 and 2;
when the totally-enclosed motor operates, heat can be generated inside the totally-enclosed motor, namely, the motor is in a heating state, the heat generated inside the totally-enclosed motor can cause gas expansion, the air pressure is increased, the expanded gas can enter the air bag 5 to realize the expansion of the air bag 5, the air pressure inside the totally-enclosed motor is further balanced, and the air pressure inside the totally-enclosed motor is stable, as shown in fig. 3 and 4;
meanwhile, an aluminum end plate 7 can be additionally arranged on one side of the totally-enclosed motor air bag 5, the air bag 5 can be protected by utilizing a protective cover 71 and a protective cover plate 9 on the aluminum end plate 7, and meanwhile, the heat dissipation of the totally-enclosed motor can be improved by the aluminum end plate 7, the heat-conducting silicon layer 8 and the heat dissipation plate pieces 10.
The examples are intended to illustrate the invention, but not to limit it. The described embodiments may be modified by those skilled in the art without departing from the spirit and scope of the present invention, and therefore, the scope of the appended claims should be accorded the full scope of the invention as set forth in the appended claims.
Claims (9)
1. The utility model provides a totally closed motor of stable interior pressure, includes stator (1), rotor shaft (2), preceding end cap (3) and back end cap (4) of motor, and stator (1), preceding end cap (3) and back end cap (4) enclose and are equipped with sealed chamber groove, and the chamber inslot interpolation is equipped with the rotor, and the grafting is fixed with rotor shaft (2) on the rotor, and preceding end cap (3), its characterized in that are stretched out to the one end of rotor shaft (2): a circular boss (41) which protrudes outwards is formed in the middle of the rear sealing end cover (4), an outer ring of the bearing (6) is fixedly inserted into the circular boss (41), and the other end of the rotor shaft (2) is fixedly inserted into an inner ring of the bearing (6); a plurality of vent holes (42) are formed in the rear sealing end cover (4) on the periphery of the circular boss (41), an annular air bag (5) is sleeved on the circular boss (41) of the rear sealing end cover (4), a plurality of plugs (51) communicated with the inner cavity of the air bag (5) are formed on the end face, close to one side of the rear sealing end cover (4), of the air bag (5), and the plugs (51) are inserted into the vent holes (42) of the rear sealing end cover (4).
2. The totally-enclosed motor with stable internal pressure as claimed in claim 1, wherein: the number of the plugs (51) on the air bag (5) is equal to that of the vent holes (42) on the rear sealing end cover (4), at least three vent holes (42) are arranged, and the vent holes (42) are uniformly distributed in an annular shape around the central axis of the rear sealing end cover (4).
3. The totally-enclosed motor with stable internal pressure as claimed in claim 2, wherein: the outer wall of a plug (51) on the air bag (5) is pressed against the inner wall of the vent hole (42) of the rear sealing end cover (4), an annular retainer ring is formed at the head of the plug (51), and the retainer ring is pressed against the inner end face of the rear sealing end cover (4).
4. The totally-enclosed motor with stable internal pressure as claimed in claim 1, wherein: the air bag (5) is annular, and the inner wall of the air bag (5) is elastically pressed against the circular boss (41) of the rear sealing end cover (4).
5. The totally-enclosed motor with stable internal pressure as claimed in claim 4, wherein: glue is coated on the inner wall of the air bag (5) and the end face of one side, close to the rear sealing end cover (4), of the air bag (5), and the inner wall of the air bag (5) and the end face of the air bag (5) are respectively adhered and fixed to the outer end face of the sealing end cover (4) and the outer wall of the circular boss (41).
6. The totally-enclosed motor with stable internal pressure as claimed in claim 1, wherein: a circular aluminum end plate (7) is arranged between the rear sealing end cover (4) and the air bag (5), a circular concave table opposite to the circular boss (41) is formed on the aluminum end plate (7), the air bag (5) is inserted and sleeved on the circular concave table of the aluminum end plate (7), and a through hole opposite to the plug (51) is formed on the aluminum end plate (7); an annular protective cover (71) is formed on the outer ring of the aluminum end plate (7), and one end, close to the rear sealing end cover (4), of the protective cover (71) is inserted and fixed on the rear sealing end cover (4); and a stud (72) is formed in the middle of the aluminum end plate (7), a protective cover plate (9) is screwed on the stud (72), and the outer ring of the protective cover plate (9) abuts against the inner wall of the protective cover (71).
7. The totally-enclosed motor with stable internal pressure as claimed in claim 6, wherein: and a heat conduction silica gel layer (8) is arranged between the aluminum end plate (7) and the rear sealing end cover (4).
8. The totally-enclosed motor with stable internal pressure as claimed in claim 6, wherein: air holes (91) are formed in the protective cover plate (9) on the inner side of the air bag (5), the protective cover plate (9) is provided with nuts (11), and the nuts (11) are screwed on the studs (72).
9. The totally-enclosed motor with stable internal pressure as claimed in claim 6, wherein: a plurality of radiating plate sheets (10) are fixed on the outer wall of the protective cover (71) of the aluminum end plate (7), and the radiating plate sheets (10) are uniformly distributed in an annular mode around the central axis of the protective cover (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110279990.7A CN112928856A (en) | 2021-03-16 | 2021-03-16 | Totally-enclosed motor with stable internal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110279990.7A CN112928856A (en) | 2021-03-16 | 2021-03-16 | Totally-enclosed motor with stable internal pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112928856A true CN112928856A (en) | 2021-06-08 |
Family
ID=76175275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110279990.7A Pending CN112928856A (en) | 2021-03-16 | 2021-03-16 | Totally-enclosed motor with stable internal pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112928856A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180331594A1 (en) * | 2015-12-24 | 2018-11-15 | Kubota Corporation | Liquid-cooled motor |
| CN209805564U (en) * | 2019-05-16 | 2019-12-17 | 赛格威科技有限公司 | Motor assembly for all-terrain vehicle and all-terrain vehicle with motor assembly |
| CN214337706U (en) * | 2021-03-16 | 2021-10-01 | 浙江三新科技有限公司 | Totally-enclosed motor with stable internal pressure |
-
2021
- 2021-03-16 CN CN202110279990.7A patent/CN112928856A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180331594A1 (en) * | 2015-12-24 | 2018-11-15 | Kubota Corporation | Liquid-cooled motor |
| CN209805564U (en) * | 2019-05-16 | 2019-12-17 | 赛格威科技有限公司 | Motor assembly for all-terrain vehicle and all-terrain vehicle with motor assembly |
| CN214337706U (en) * | 2021-03-16 | 2021-10-01 | 浙江三新科技有限公司 | Totally-enclosed motor with stable internal pressure |
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