CN209057050U - A kind of heat-conducting type external rotor electric machine - Google Patents
A kind of heat-conducting type external rotor electric machine Download PDFInfo
- Publication number
- CN209057050U CN209057050U CN201821821830.0U CN201821821830U CN209057050U CN 209057050 U CN209057050 U CN 209057050U CN 201821821830 U CN201821821830 U CN 201821821830U CN 209057050 U CN209057050 U CN 209057050U
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- China
- Prior art keywords
- shaft
- hole
- end cap
- cylinder
- bearing
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a kind of heat-conducting type external rotor electric machines, including shaft, rotor, stator, end cap, bearing group, casing and plug, the side center of the end cap is equipped with the cylinder with central through hole, the cylinder to raise upward is inserted in the central through hole of stator, the end of the shaft is pierced by the central through hole of plug and is equipped with expansion mouth, the first ventilation hole is equipped in the shaft, be additionally provided in the shaft several be connected to the first ventilation hole and the other end lead to shaft surface the first pore, the second ventilation hole is equipped in the cylinder and ontology of the end cap, it is respectively equipped with that several are connected to the second ventilation hole and the other end leads to the second pore of cylinder central through hole and towards the third pore outside end cap in the cylinder and ontology of the end cap, the fan blade in shaft expansion mouth is rotated using rotor and is formed inside Air-flow makes motor achieve the effect that cool down rapidly by air-flow along flow therethrough set in shaft and end cap.
Description
[technical field]
The utility model relates to the technical field of external rotor electric machine, the technology of especially a kind of heat-conducting type external rotor electric machine is led
Domain.
[background technique]
Existing motor product can be divided into inner rotor type motor and external-rotor motor by the arrangement of stator and rotor.
Inner rotor type motor rotor is rotatably installed in stator interior, and external-rotor motor rotor is rotatably installed in outside stator
Portion.In many applications, external rotor electric machine causes motor performance to be affected since its cooling performance is undesirable, and efficiency is not
It can maximize.
[utility model content]
The purpose of this utility model is exactly to solve the problems of the prior art, proposes a kind of heat-conducting type external rotor electric machine, benefit
The fan blade in shaft expansion mouth is rotated with rotor and forms inside air-flow, by air-flow along institute in shaft and end cap
The flow therethrough of setting constantly takes away the heat in motor, and motor is made to achieve the effect that cool down rapidly.
To achieve the above object, the utility model proposes a kind of heat-conducting type external rotor electric machine, including it is shaft, rotor, fixed
Son, end cap, bearing group, casing and plug, the side center of the end cap are equipped with the cylinder with central through hole, and the plug is solid
It is scheduled in the threaded hole of the end cap other side, the cylinder to raise upward is inserted in the central through hole of stator, the bearing
Group includes first bearing and second bearing, and the first bearing and second bearing are separately fixed at the of the central through hole of cylinder
In one bearing block and second bearing seat, the shaft is fixed on rotor by casing, and the end of the shaft is pierced by plug
Central through hole is simultaneously equipped with expansion mouth, and the first ventilation hole is equipped in the shaft, several are additionally provided in the shaft and is led to first
Air holes connection and the other end lead to first pore on shaft surface, are equipped with the second ventilation hole in the cylinder and ontology of the end cap,
Be respectively equipped in the cylinder and ontology of the end cap several be connected to the second ventilation hole and the other end lead to cylinder central through hole
The second pore and towards the third pore outside end cap.
Preferably, the first bearing is arranged close to the end of rotor and is connect with casing by pressure spring.
Preferably, the aperture of first ventilation hole is gradually reduced from expansion mouth to from second bearing.
Preferably, being fixed with several fan blade with curved surface on the inner wall of the expansion mouth.
The utility model has the beneficial effects that the utility model makes the rotation of the fan blade in shaft expansion mouth simultaneously using rotor
Inside air-flow is formed, by air-flow along flow therethrough set in shaft and end cap, constantly takes away the heat in motor,
Motor is set to achieve the effect that cool down rapidly.
The feature and advantage of the utility model will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is a kind of structural schematic diagram of heat-conducting type external rotor electric machine of the utility model；
Fig. 2 is a kind of right view of the expansion mouth of heat-conducting type external rotor electric machine of the utility model.
In figure: 1- shaft, 11- expansion mouth, 111- fan blade, the first ventilation hole of 12-, the first pore of 121-, 2- rotor,
3- stator, 4- end cap, 41- cylinder, the second ventilation hole of 42-, the second pore of 421-, 422- third pore, 5- bearing group, 51-
One bearing, 52- second bearing, 6- casing and 7- plug.
[specific embodiment]
Refering to fig. 1 and Fig. 2, a kind of heat-conducting type external rotor electric machine of the utility model, including shaft 1, rotor 2, stator 3, end
The side center of lid 4, bearing group 5, casing 6 and plug 7, the end cap 4 is equipped with the cylinder 41 with central through hole, the plug
7 are fixed in the threaded hole of 4 other side of end cap, and the cylinder 41 to raise upward is inserted in the central through hole of stator 3, described
Bearing group 5 include first bearing 51 and second bearing 52, the first bearing 51 and second bearing 52 are separately fixed at column
In the first bearing seat and second bearing seat of the central through hole of body 41, the shaft 1 is fixed on rotor 2 by casing 6, described
The end of shaft 1 is pierced by the central through hole of plug 7 and is equipped with expansion mouth 11, and the first ventilation hole 12 is equipped in the shaft 1, described
Be additionally provided in shaft 1 several be connected to the first ventilation hole 12 and the other end lead to 1 surface of shaft the first pore 121, it is described
It is equipped with the second ventilation hole 42 in the cylinder 41 and ontology of end cap 4, is respectively equipped with several in the cylinder 41 and ontology of the end cap 4
It is connected to the second ventilation hole 42 and the other end leads to the second pore 421 of 41 central through hole of cylinder and towards outside end cap 4
Third pore 422, the first bearing 51 are arranged close to the end of rotor 2 and are connect with casing 6 by pressure spring, described first
The aperture of ventilation hole 12 is gradually reduced from expansion mouth 11 to from second bearing 52, fixed on the inner wall of the expansion mouth 11
There are several fan blade 111 with curved surface.
Utility model works process:
During the work time, rotor 2 drives shaft 1 to exist to a kind of heat-conducting type external rotor electric machine of the utility model by casing 6
It is rotated in cylinder 41, fixed fan blade 111 is with the rotation of shaft 1 in expansion mouth 11.The curved surface of fan blade 111 is rotating
Continuous compressed air in the process reduces the atmospheric density at its back side, so that air be made constantly to be inhaled into shaft 1 from the external world.
Since the aperture of the front end of the first ventilation hole 12 constantly reduces, so that the air wind speed that is inhaled into increases, subsequent air is from first
Pore 121 enters in the cavity surrounded by shaft 1, bearing group 5 and cylinder 41, enters in end cap 4 further along the second pore 421,
It is discharged outside motor finally along the second ventilation hole 42 and third pore 422 from end cap 4.Also can external blowing device pass through expansion mouth
11 radiate towards blowing in motor.The air of flowing constantly takes away the heat in motor, effectively enhances the heat dissipation effect of end cap, makes
Motor cools down rapidly.
The utility model rotates the fan blade in shaft expansion mouth using rotor and forms inside air-flow, passes through gas
Stream constantly takes away the heat in motor along flow therethrough set in shaft and end cap, reaches motor and cools down rapidly
Effect.
Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new
Scheme after type simple transformation belongs to the protection scope of the utility model.
Claims (4)
1. a kind of heat-conducting type external rotor electric machine, it is characterised in that: including shaft (1), rotor (2), stator (3), end cap (4), axis
Group (5), casing (6) and plug (7) are held, the side center of the end cap (4) is equipped with the cylinder (41) with central through hole, described
Plug (7) is fixed in the threaded hole of end cap (4) other side, and the cylinder (41) to raise upward is inserted in stator (3)
In heart through-hole, the bearing group (5) includes first bearing (51) and second bearing (52), the first bearing (51) and
Two bearings (52) are separately fixed in the first bearing seat and second bearing seat of the central through hole of cylinder (41), the shaft (1)
It is fixed on rotor (2) by casing (6), the end of the shaft (1) is pierced by the central through hole of plug (7) and is equipped with expansion mouth
(11), the first ventilation hole (12) are equipped in the shaft (1), are additionally provided with several and the first ventilation hole in the shaft (1)
(12) connection and the other end lead to first pore (121) on shaft (1) surface, in the cylinder (41) and ontology of the end cap (4)
Equipped with the second ventilation hole (42), several and the second ventilation hole are respectively equipped in the cylinder (41) and ontology of the end cap (4)
(42) connection and the other end lead to second pore (421) of cylinder (41) central through hole and lead to end cap (4) external third
Pore (422).
2. a kind of heat-conducting type external rotor electric machine as described in claim 1, it is characterised in that: the first bearing (51) is mounted on
Close to rotor (2) end and connect with casing (6) by pressure spring.
3. a kind of heat-conducting type external rotor electric machine as described in claim 1, it is characterised in that: the hole of first ventilation hole (12)
Diameter is gradually reduced from expansion mouth (11) at second bearing (52).
4. a kind of heat-conducting type external rotor electric machine as described in claim 1, it is characterised in that: on the inner wall of the expansion mouth (11)
It is fixed with several fan blade (111) with curved surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821821830.0U CN209057050U (en) | 2018-11-06 | 2018-11-06 | A kind of heat-conducting type external rotor electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821821830.0U CN209057050U (en) | 2018-11-06 | 2018-11-06 | A kind of heat-conducting type external rotor electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209057050U true CN209057050U (en) | 2019-07-02 |
Family
ID=67052590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821821830.0U Expired - Fee Related CN209057050U (en) | 2018-11-06 | 2018-11-06 | A kind of heat-conducting type external rotor electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209057050U (en) |
-
2018
- 2018-11-06 CN CN201821821830.0U patent/CN209057050U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190702 Termination date: 20201106 |