CN111917243A - Ceiling fan motor with double cooling air path structure - Google Patents
Ceiling fan motor with double cooling air path structure Download PDFInfo
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- CN111917243A CN111917243A CN202010935861.4A CN202010935861A CN111917243A CN 111917243 A CN111917243 A CN 111917243A CN 202010935861 A CN202010935861 A CN 202010935861A CN 111917243 A CN111917243 A CN 111917243A
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- Prior art keywords
- end cover
- cooling air
- air
- stator core
- motor
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- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 238000004804 winding Methods 0.000 claims abstract description 31
- 238000009413 insulation Methods 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 241000883990 Flabellum Species 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
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
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary 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
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- 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
-
- 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
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
A ceiling fan motor with a double-cooling air path structure relates to the technical field of ceiling fan motors, solves the technical defects of motor damage and the like of an industrial ceiling fan, and comprises a rotor assembly and a stator assembly; the rotor assembly comprises a rotor shell, a rotor body, an upper end cover and a lower end cover; the upper end cover is provided with an annular array of air inlet holes, the hub is provided with an annular array of vent holes, and the lower end cover is provided with an annular array of air outlet holes; the air inlet hole, the air vent and the air outlet hole form a main cooling air path; an upper end cover groove is arranged on the inner side surface of the upper end cover; a circular ring is arranged on the winding insulating plate; and a cooling air bypass is formed by a gap between the upper end cover groove and the circular ring, a groove path on the stator core and a gap between the hub and the lower end cover. The water drops are blocked by the circular ring and cannot enter the stator core, and dust can be blocked by the circular ring, so that the motor is effectively protected, and the motor conforms to the IP23 protection grade; the invention forms two parallel cooling air path structures, and improves the cooling and heat dissipation effects of the motor.
Description
Technical Field
The invention relates to the technical field of ceiling fan motors, in particular to the improvement of a cooling structure of an industrial ceiling fan motor.
Background
In the design of the modern industrial ceiling fan, a direct-drive scheme that a permanent magnet torque motor directly drives fan blades of the ceiling fan is usually adopted, and the high-efficiency motor has the characteristics of high efficiency and high power density, the corresponding loss density is also high, the temperature rise of each part of the motor is high, and particularly a stator winding is adopted. Compared with the traditional motor, the permanent magnet torque motor has the advantages that the temperature rise is higher and faster in the operation process, in order to solve the problem of the heating temperature rise of the motor, a plurality of motors form an internal air path of the motor through the heat dissipation holes of the upper end cover and the lower end cover to solve the problem of the temperature rise, and the permanent magnet torque motor is generally divided into a main cooling air path and a bypass. The main path of the air path is the path of radiating from the radiating holes of the upper end cover, the through holes of the wheel hub and the radiating holes of the lower end cover, and dust and water drops carried in air convection do not damage the motor winding. However, the path of the air path bypass is an upper end cover heat dissipation hole, an end cover fan blade, a winding slot path and a lower end cover heat dissipation hole, and the air flow easily causes more dust and even water drops to enter the winding inside the motor through the path, so that the motor is damaged.
Disclosure of Invention
In summary, the present invention is directed to a ceiling fan motor with a dual cooling air path structure to solve the technical deficiencies that dust and water drops are likely to enter the inner winding of the motor to cause the motor to be damaged in the cooling structure of the industrial ceiling fan.
In order to solve the technical problems provided by the invention, the technical scheme is as follows:
a ceiling fan motor with a double cooling air path structure comprises a rotor assembly and a stator assembly; the rotor assembly comprises a rotor shell, a rotor body fixed in the rotor shell, an upper end cover arranged at the upper end of the rotor shell and a lower end cover arranged at the lower end of the rotor shell; the stator assembly comprises a stator shaft, a hub, a stator core, a winding insulation plate and a winding; the stator shaft is respectively and rotatably connected with the upper end cover and the lower end cover through bearings, the stator core is arranged in the rotor shell and fixedly connected with the stator shaft through a hub, the winding insulation plate is arranged on the stator core, and the winding is arranged on the winding insulation plate; a plurality of windings on the stator core are provided with slot circuits which are communicated up and down; the upper end cover is provided with a plurality of air inlet holes in an annular array, the hub is provided with a plurality of air vent holes corresponding to the air inlet holes in the annular array, and the lower end cover is provided with a plurality of air outlet holes corresponding to the air vent holes in the annular array; the air inlet hole, the air vent and the air outlet hole form a cooling air main path; an annular upper end cover groove is formed in the inner side face of the upper end cover at the position corresponding to the junction position of the hub and the stator core; a circle of circular ring which protrudes upwards into the groove of the upper end cover is arranged on the winding insulating plate, and a cooling air bypass is formed by a gap between the groove of the upper end cover and the circular ring, a slot circuit between a plurality of windings on the stator core and a gap between the hub and the lower end cover; and a bypass air inlet and a bypass air outlet of the cooling air bypass are respectively communicated with the cooling air main path.
The technical scheme for further limiting the invention comprises the following steps:
the top of upper end cover be equipped with more than two and be used for the radial flabellum of one-level to the fresh air inlet wind-guiding.
The distance from the center of the air inlet hole to the center of the upper end cover is equal to the distance from the center of the first-stage radial fan blade to the center of the upper end cover.
The first-stage radial fan blades are radially and uniformly distributed on the upper end cover.
The upper end cover is also provided with a second-stage radial fan blade, and the distance from the center of the first-stage radial fan blade to the center of the upper end cover is smaller than the distance from the center of the second-stage radial fan blade to the center of the upper end cover; and the cooling air bypass air inlet is arranged between the first-stage radial fan blade and the second-stage radial fan blade.
The second-stage radial fan blades are radially and uniformly distributed on the upper end cover.
The invention has the beneficial effects that: the two-stage series excited bypass cooling air path with the IP23 protection realizes the IP23 protection under the condition of ensuring that the bypass air path in the motor is not influenced, and has the advantages of simple structure, low production and manufacturing cost and good cooling effect, thereby effectively reducing the temperature rise of the motor and improving the operation efficiency of the motor.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the cooling air bypass according to the present invention;
FIG. 3 is a schematic perspective view of the upper end cap of the present invention;
FIG. 4 is a schematic diagram of the present invention;
FIG. 5 is a schematic view of the inherent wind field during use of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present application can be more clearly understood, a detailed description of the present application will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present application, and the described embodiments are merely a subset of the embodiments of the present application, rather than all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The structure of the present invention will be further described with reference to fig. 1 to 5 and preferred embodiments of the present invention.
The invention discloses a ceiling fan motor with a double cooling air path structure, which comprises a rotor assembly 1 and a stator assembly 2.
The rotor assembly 1 includes a rotor housing 11, a rotor body 12 fixed in the rotor housing 11, an upper end cover 13 disposed at an upper end of the rotor housing 11, and a lower end cover 14 disposed at a lower end of the rotor housing.
The stator assembly 2 comprises a stator shaft 21, a hub 22, a stator core 23, a winding insulation plate 24 and a winding; the stator shaft 21 is respectively connected with the upper end cover 13 and the lower end cover 14 in a rotating way through two bearings 211; the stator core 23 is arranged in the rotor shell 11 and is in electromagnetic driving fit with the rotor body 12; the stator core 23 is fixedly connected with the stator shaft 21 through the hub 22; the winding insulation plate 24 is arranged on the stator core 23, and the winding is arranged on the winding insulation plate 24; a plurality of windings on the stator core 23 are provided with slot circuits communicated up and down.
Compared with the prior art, the invention is mainly characterized in that a plurality of air inlet holes 131 are arranged on the upper end cover 13 in an annular array manner, a plurality of vent holes 221 corresponding to the air inlet holes 131 are arranged on the hub 22 in an annular array manner, and a plurality of air outlet holes 141 corresponding to the vent holes 221 are arranged on the lower end cover 14 in an annular array manner; the air inlet 131, the vent 221 and the air outlet 141 form a main cooling air path. Because the requirement of the hub 22 on dust prevention and water prevention is low, in the running process of the motor, after entering from the air inlet 131, the outside air flows through the air vent 221 on the hub 22, so that the hub 22 is cooled, and the hub 22 indirectly exchanges heat with the stator core 23 to absorb the heat of the stator core 23.
In order to realize direct air cooling of the stator core 23 and ensure that the stator core 23 meets the protection level requirement of IP23, an annular upper end cover groove 132 is formed in the inner side surface of the upper end cover 13 at the position corresponding to the junction position of the hub 22 and the stator core 23; a circle of circular rings 241 protruding upwards into the upper end cover groove 132 are arranged on the winding insulating plate 24; the gap between the upper end cover groove 132 and the circular ring 241, the slot circuit between a plurality of windings on the stator core 23 and the gap between the hub and the lower end cover 14 of the stator 22 form a cooling air bypass; the bypass air inlet and the bypass air outlet of the cooling air bypass are respectively communicated with the cooling air main path, and part of the cold air entering from the air inlet hole 131 enters the cooling air bypass under the action of centrifugal force, so that the stator core 23 is directly cooled by air.
The motor IP23 protection grade is that solid foreign matters with the diameter larger than 12mm can be prevented from entering the shell, and fingers can be prevented from touching the electrified or moving part in the shell; at an angle of 15 to the verticaloThe dripping water in the angular range cannot directly enter the motor. As shown in fig. 2, in the present invention, due to the existence of the ring 241 protruding upward, part of the cold air entering from the air inlet 131 needs to rise along the ring 241, cross over the ring 241 from the gap between the top of the ring 241 and the bottom of the upper end cover groove 132, and then downward reach the slot path between the windings on the stator core 23, so as to air-cool the stator core 23, and the hot air after air-cooling heat exchange transversely enters the main cooling air path and is discharged from the air outlet 141; water dripped from the air inlet 131 is blocked by the circular ring 241 and cannot enter the stator core 23, dust carried in cold air can be effectively blocked by the circular ring 241 and cannot enter a groove circuit on the stator core 23, so that the motor is effectively protected, and the motor meets the IP23 protection grade; by arranging the cooling air bypass, two parallel cooling air path structures are formed with the cooling air main path, and the cooling and heat dissipation effects of the motor are further improved.
In order to make the external cold air better enter from the air inlet holes 131 and form a strong air flow, as shown in fig. 3, the top of the upper end cover 13 is provided with more than two first-stage radial fan blades 134 for guiding air towards the air inlet holes 131. The distance from the center of the air inlet hole 131 to the center of the upper end cover 13 is equal to the distance from the center of the first-stage radial fan blade 134 to the center of the upper end cover. That is, the air inlet 131 and the first-stage radial fan blades 134 are located in the same diameter annular area of the upper end cover 13 and are uniformly distributed; in the rotating process of the motor, the primary radial fan blades 134 can stir cold air input into the air inlet 131, the airflow strength of the cooling air main path and the cooling air bypass is increased, the flowing speed of the cold air in the motor is increased, and the cooling and heat dissipation effects of the cooling air path are improved.
In a specific implementation process, a plurality of secondary radial fan blades 135 can be further arranged on the upper end cover according to needs, and the distance from the center of the primary radial fan blade 134 to the center of the upper end cover 13 is smaller than the distance from the center of the secondary radial fan blade 135 to the center of the upper end cover 134; the cooling air bypass inlet 136 may be separately disposed between the first-stage radial fan blade 134 and the second-stage radial fan blade 135. The second-stage radial fan blades are radially and uniformly distributed on the upper end cover.
While the preferred embodiments of the present invention have been illustrated and described in detail, it should be understood that modifications and variations can be effected by one skilled in the art in light of the above teachings without undue experimentation. Therefore, any technical solutions that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the prior art according to the present inventive concept should be within the scope of protection defined by the present claims.
Claims (6)
1. A ceiling fan motor with a double cooling air path structure comprises a rotor assembly and a stator assembly;
the rotor assembly comprises a rotor shell, a rotor body fixed in the rotor shell, an upper end cover arranged at the upper end of the rotor shell and a lower end cover arranged at the lower end of the rotor shell;
the stator assembly comprises a stator shaft, a hub, a stator core, a winding insulation plate and a winding; the stator shaft is respectively and rotatably connected with the upper end cover and the lower end cover through bearings, the stator core is arranged in the rotor shell and fixedly connected with the stator shaft through a hub, the winding insulation plate is arranged on the stator core, and the winding is arranged on the winding insulation plate; a plurality of windings on the stator core are provided with slot circuits which are communicated up and down;
the method is characterized in that:
the upper end cover is provided with a plurality of air inlet holes in an annular array, the hub is provided with a plurality of air vent holes corresponding to the air inlet holes in the annular array, and the lower end cover is provided with a plurality of air outlet holes corresponding to the air vent holes in the annular array; the air inlet hole, the air vent and the air outlet hole form a cooling air main path;
an annular upper end cover groove is formed in the inner side face of the upper end cover at the position corresponding to the junction position of the hub and the stator core; a circle of circular ring which protrudes upwards into the groove of the upper end cover is arranged on the winding insulating plate, and a cooling air bypass is formed by a gap between the groove of the upper end cover and the circular ring, a slot circuit between a plurality of windings on the stator core and a gap between the hub and the lower end cover; and a bypass air inlet and a bypass air outlet of the cooling air bypass are respectively communicated with the cooling air main path.
2. The ceiling fan motor with dual cooling air path structure as claimed in claim 1, wherein: the top of upper end cover be equipped with more than two and be used for the radial flabellum of one-level to the fresh air inlet wind-guiding.
3. The ceiling fan motor with dual cooling air path structure as claimed in claim 2, wherein: the distance from the center of the air inlet hole to the center of the upper end cover is equal to the distance from the center of the first-stage radial fan blade to the center of the upper end cover.
4. The ceiling fan motor with dual cooling air path structure as claimed in claim 2, wherein: the first-stage radial fan blades are radially and uniformly distributed on the upper end cover.
5. The ceiling fan motor with dual cooling air path structure as claimed in claim 2, wherein: the upper end cover is also provided with a second-stage radial fan blade, and the distance from the center of the first-stage radial fan blade to the center of the upper end cover is smaller than the distance from the center of the second-stage radial fan blade to the center of the upper end cover; and the cooling air bypass air inlet is arranged between the first-stage radial fan blade and the second-stage radial fan blade.
6. The ceiling fan motor with dual cooling air path structure as claimed in claim 5, wherein: the second-stage radial fan blades are radially and uniformly distributed on the upper end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935861.4A CN111917243A (en) | 2020-09-08 | 2020-09-08 | Ceiling fan motor with double cooling air path structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010935861.4A CN111917243A (en) | 2020-09-08 | 2020-09-08 | Ceiling fan motor with double cooling air path structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111917243A true CN111917243A (en) | 2020-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010935861.4A Pending CN111917243A (en) | 2020-09-08 | 2020-09-08 | Ceiling fan motor with double cooling air path structure |
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| Country | Link |
|---|---|
| CN (1) | CN111917243A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937799A (en) * | 2024-01-26 | 2024-04-26 | 瑞安市亿康降温设备有限公司 | Industrial ceiling fan motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07245914A (en) * | 1994-01-11 | 1995-09-19 | Fuji Electric Co Ltd | Cooling air ventilator for electric rotating machine |
| CN106160340A (en) * | 2016-08-13 | 2016-11-23 | 中车永济电机有限公司 | A kind of totally-enclosed forced ventilation cooling structure of magneto |
| CN210829793U (en) * | 2019-08-12 | 2020-06-23 | 尼得科电机（青岛）有限公司 | Fan, motor and electric product |
| CN212627526U (en) * | 2020-09-08 | 2021-02-26 | 广东肇庆德通有限公司 | Ceiling fan motor with double cooling air path structure |
-
2020
- 2020-09-08 CN CN202010935861.4A patent/CN111917243A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07245914A (en) * | 1994-01-11 | 1995-09-19 | Fuji Electric Co Ltd | Cooling air ventilator for electric rotating machine |
| CN106160340A (en) * | 2016-08-13 | 2016-11-23 | 中车永济电机有限公司 | A kind of totally-enclosed forced ventilation cooling structure of magneto |
| CN210829793U (en) * | 2019-08-12 | 2020-06-23 | 尼得科电机（青岛）有限公司 | Fan, motor and electric product |
| CN212627526U (en) * | 2020-09-08 | 2021-02-26 | 广东肇庆德通有限公司 | Ceiling fan motor with double cooling air path structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117937799A (en) * | 2024-01-26 | 2024-04-26 | 瑞安市亿康降温设备有限公司 | Industrial ceiling fan motor |
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