CN105375671A - Fan - Google Patents
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- CN105375671A CN105375671A CN201510922142.8A CN201510922142A CN105375671A CN 105375671 A CN105375671 A CN 105375671A CN 201510922142 A CN201510922142 A CN 201510922142A CN 105375671 A CN105375671 A CN 105375671A
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- China
- Prior art keywords
- cavity
- motor shaft
- motor
- bearing
- hole
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a fan, belonging to the technical field of fans. The problem that a bearing is damaged due to the fact that gas in the cavity of the existing fan cannot be discharged in time and forms a corrosive fluid after being cooled can be solved. The fan disclosed by the invention comprises an outer cylindrical shell, a motor and a fan blade, wherein the motor and the fan blade are installed in the outer shell; the motor comprises an end cover, a rotor assembly and a stator assembly; the fan blade is fixedly installed on the rotor assembly; a ventilation channel communicated with the external environment is between the rotor assembly and the outer shell; a motor shaft installation hole is formed in the middle of the end cover; two bearings are installed in the motor shaft installation hole; the bearing near the rotor assembly is defined as the rear bearing; the other bearing is the front bearing; a sealed dustproof cover is installed over the orifice of the motor shaft installation hole; the sealed dustproof cover, the motor shaft, the front bearing and the inner wall of the motor shaft installation hole form a cavity; and the cavity is communicated with the external environment through an exhaust hole structure. By means of the fan disclosed by the invention, gas in the cavity can be discharged in time, such that gas cannot form the fluid after being cooled.
Description
Technical field
The invention belongs to blower fan technical field, relate to a kind of blower fan.
Background technology
Existing blower fan comprises shell body and is arranged on motor, the fan blade in shell body, motor comprises end cap, field frame assembly and rotor assembly, field frame assembly to be arranged on end cap and between end cap and rotor assembly, in the middle of end cap, there is motor axis hole, in motor axis hole, bearing is installed, motor shaft is arranged on bearing, and motor shaft one end is arranged on rotor assembly, and the bearing of the other end and this end and motor axis hole inwall form a cavity.
Fall in this cavity to prevent dust etc. and the bearing being arranged in this cavity is caused damage so that bearing cisco unity malfunction, at the accent of this cavity i.e. the aperture of motor axis hole, sealing dust-proof cover is set to avoid dust, liquid etc. enter in this cavity and damage bearing, but still there are some problems: when blower fan be operated in air with impurity particularly with the environment of corrosive impurity in time, this corrosive impurity can be liquid also can be gas, blower fan works, the operational heat such as bearing and motor shaft heats ambient air, even corrosive liquid medium, cavity is entered into by a thermal evaporation then part by the space between bearing and motor shaft in the meeting of bearing and motor shaft periphery, after fan parking cooling, the gas with corrosive impurity in its cavity also can be caught a cold to cool and be formed the mordant liquid of band, stay like this and in the cavities corrosion and damage is caused to bearing, thus affect the normal work of whole blower fan.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of gas in cavity can discharge in time and there will not be hydrops thus the blower fan that can not damage bearing.
Object of the present invention realizes by following technical proposal: a kind of blower fan, the motor comprising cylindric shell body and be arranged in shell body, fan blade, described motor comprises end cap, rotor assembly and field frame assembly, above-mentioned fan blade is fixedly mounted on rotor assembly, there is between rotor assembly and shell body the air duct with external environment connect, motor shaft installing hole is had in the middle of described end cap, in motor shaft installing hole, two bearings is installed, definition is rear bearing near the bearing of rotor assembly, another bearing is fore bearing, motor shaft one end to be arranged on rear bearing and to be connected with rotor assembly, the other end is arranged on fore bearing, the aperture of described motor shaft installing hole is provided with sealing dust-proof cover, described sealing dust-proof cover, motor shaft, fore bearing and motor shaft installing hole inwall form a cavity, it is characterized in that: described cavity is by vent structure and external environment connect, gas in cavity can be discharged in external environment by described vent structure.
In above-mentioned a kind of blower fan, between described end cap and rotor assembly, be formed with motor cavity.
In above-mentioned a kind of blower fan, described field frame assembly is fixedly mounted on end cap, and is arranged in above-mentioned motor cavity.
In above-mentioned a kind of blower fan, described vent structure comprises above-mentioned motor cavity, above-mentioned air duct, the gap that is opened in the through hole one on motor shaft installing hole inwall and is located between end cap and rotor assembly, described through hole one is communicated with above-mentioned motor cavity and cavity, and described gap is communicated with above-mentioned motor cavity and air duct.
In above-mentioned a kind of blower fan, described vent structure comprises the through hole two be opened on motor shaft installing hole inwall, and described through hole two is communicated with above-mentioned cavity and air duct.
In above-mentioned a kind of blower fan, described through hole one is inclined hole.
In above-mentioned a kind of blower fan, described through hole two is inclined hole.
In above-mentioned a kind of blower fan, described sealing and dustproof exterior surface flushes with the outer surface of end cap.
Compared with prior art; this blower fan offers the outlet passageway for exhaust in the cavity of existing blower fan; such external world with the gas of corrosive impurity from entering between bearing and motor shaft after in cavity; can discharge from outlet passageway timely; such blower fan is when shutting down, and its gas can not be condensed at cavity has corrosive liquid to infringements such as bearings, protects bearing not by infringements such as corrosion; ensure that blower fan normally works, and extend service life of fan.
Accompanying drawing explanation
Fig. 1 is partial sectional view of the present invention.
Fig. 2 is another partial sectional view of the present invention.
In figure, 1, fan blade; 2, end cap; 3, convex edge; 4, installing rack; 5, field frame assembly; 6, rotor assembly; 7, motor shaft; 8, fore bearing; 9, rear bearing; 10, sealing dust-proof cover; 11, cavity; 12, through hole one; 13, motor cavity; 14, gap; 15, through hole two.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
As shown in Figure 1, motor, fan blade (1) that this blower fan comprises cylindric shell body (not shown) and is arranged in shell body, motor is fixedly mounted on shell body by circular support (not shown), and motor comprises end cap (2), rotor assembly (6) and field frame assembly (5).End cap (2) surrounding has vertically extended convex edge (3), and extend upward installing rack (4) with convex edge (3) Tongfang in the middle of end cap (2), motor shaft installing hole is had in the middle of end cap (2), motor shaft installing hole runs through whole installing rack (4), its motor shaft mounting hole site is provided with sealing dust-proof cover (10) on the aperture at end cap (2) place, and sealing dust-proof cover (10) outer surface flushes with the outer surface of end cap (2).Motor shaft mounting hole site is provided with two bearings in installing rack (4) that section, near rotor assembly (6) is rear bearing (9), near end cap (2) is fore bearing (8), motor shaft (7) one end is arranged on fore bearing (8), and the other end runs through rear bearing (9) and is arranged on rotor assembly (6).
Rotor assembly (6) two ends are connected with convex edge (3) and installing rack (4) respectively, and and end cap (2), between convex edge (3) and installing rack (4), form motor cavity (13), it is upper and be arranged in motor cavity (13) that field frame assembly (5) is fixedly mounted on installing rack (4).
Fore bearing (8), motor shaft (7), between sealing dust-proof cover (10) and motor shaft installing hole inwall formed a cavity (11), cavity (11) is by vent structure and external environment connect.Its vent structure is: motor shaft installing hole inwall has the through hole one (12) being communicated with cavity (11) and motor cavity (13), this through hole one (12) is inclined hole, there is between rotor assembly (6) and convex edge (3) gap (14), have the air duct (not shown) with external environment connect between rotor assembly (6) and shell body, the inner gas of cavity (11) can be discharged in external environment by through hole one (12), motor cavity (13), gap (14) and air duct successively.
When the work of this blower fan is mingled with under the adverse circumstances of impurity particularly corrosive impurity in atmosphere, blower fan works, an its surrounding enviroment gas wherein part can by entering in cavity (11) in the space between bearing and motor shaft (7), then assemble in cavity (11), due to blower fan work, all heat can be produced in its bearing and motor shaft (7) and cavity (11), its gas one road expanded by heating entering into cavity (11) forms hyperbar gas, gas in cavity (11) and external environment form draught head, under the effect of draught head, gas in cavity (11) is by through hole one (12), motor cavity (13), gap (14) and air duct are discharged in external environment, gas in such cavity (11) is discharged in external environment in time, thus avoid and make the gas cooled of the inside become to have corrosive liquid and occur the phenomenon of the structural damage such as bearing when the temperature in cavity after blower fan quits work (11) declines, thus extend bearing isostructural useful life, ensure the permanent efficient work of blower fan.
Embodiment two
As shown in Figure 2, the structure difference of the present embodiment and embodiment one is: the vent structure in the present embodiment for have through hole two (15) on motor shaft installing hole inwall, through hole two (15) is directly communicated with cavity (11) and air duct, gas in cavity (11) is directly discharged to air duct then in external environment by through hole two (15), and through hole two (15) can be inclined hole or straight hole.Other structures and principle are all identical with embodiment one, repeat no more.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (8)
1. a blower fan, the motor comprising cylindric shell body and be arranged in shell body, fan blade (1), described motor comprises end cap (2), rotor assembly (6) and field frame assembly (5), above-mentioned fan blade (1) is fixedly mounted on rotor assembly (6), there is between rotor assembly (6) and shell body the air duct with external environment connect, motor shaft installing hole is had in the middle of described end cap (2), in motor shaft installing hole, two bearings is installed, definition is rear bearing (9) near the bearing of rotor assembly (6), another bearing is fore bearing (8), motor shaft (7) one end is arranged on rear bearing (9) and goes up and be connected with rotor assembly (6), the other end is arranged on fore bearing (8), the aperture of described motor shaft installing hole is provided with sealing dust-proof cover (10), described sealing dust-proof cover (10), motor shaft (7), fore bearing (8) and motor shaft installing hole inwall form a cavity (11), it is characterized in that: described cavity (11) is by vent structure and external environment connect, gas in cavity (11) can be discharged in external environment by described vent structure.
2. a kind of blower fan according to claim 1, is characterized in that, is formed with motor cavity (13) between described end cap (2) and rotor assembly (6).
3. a kind of blower fan according to claim 2, is characterized in that, described field frame assembly (5) is fixedly mounted on end cap (2), and is arranged in above-mentioned motor cavity (13).
4. a kind of blower fan according to Claims 2 or 3, it is characterized in that, described vent structure comprises above-mentioned motor cavity (13), above-mentioned air duct, the gap (14) that is opened in the through hole one (12) on motor shaft installing hole inwall and is located between end cap (2) and rotor assembly (6), described through hole one (12) is communicated with above-mentioned motor cavity (13) and cavity (11), and described gap (14) are communicated with above-mentioned motor cavity (13) and air duct.
5. a kind of blower fan according to Claims 2 or 3, it is characterized in that, described vent structure comprises the through hole two (15) be opened on motor shaft installing hole inwall, and described through hole two (15) is communicated with above-mentioned cavity (11) and air duct.
6. a kind of blower fan according to claim 4, is characterized in that, described through hole one (12) is inclined hole.
7. a kind of blower fan according to claim 5, is characterized in that, described through hole two (15) is inclined hole.
8. a kind of blower fan according to claim 1, is characterized in that, described sealing dust-proof cover (10) outer surface flushes with the outer surface of end cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510922142.8A CN105375671B (en) | 2015-12-11 | 2015-12-11 | A kind of blower fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510922142.8A CN105375671B (en) | 2015-12-11 | 2015-12-11 | A kind of blower fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105375671A true CN105375671A (en) | 2016-03-02 |
| CN105375671B CN105375671B (en) | 2017-09-12 |
Family
ID=55377574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510922142.8A Active CN105375671B (en) | 2015-12-11 | 2015-12-11 | A kind of blower fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105375671B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941637A (en) * | 2022-04-24 | 2022-08-26 | 马国山 | Motor cavity air pressure balancing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126988Y (en) * | 2007-12-13 | 2008-10-01 | 佛山市顺德区泛仕达机电有限公司 | End cap of external rotor axial fan |
| CN202749964U (en) * | 2012-08-21 | 2013-02-20 | 宁波贝德尔电讯电机有限公司 | Dustproof outer-rotor fan |
| CN103001379A (en) * | 2012-12-30 | 2013-03-27 | 台州市博洋机电有限公司 | External rotor electric machine |
| JP2013165620A (en) * | 2012-02-13 | 2013-08-22 | Minebea Co Ltd | Brushless motor and air blower |
| CN203352345U (en) * | 2013-06-20 | 2013-12-18 | 佛山市威灵洗涤电机制造有限公司 | A waterproof structure of an external rotor motor and an external rotor motor using the same |
| CN204200869U (en) * | 2014-10-27 | 2015-03-11 | 杭州恩斯克万达电动转向***有限公司 | A kind of bearing unit dispelled the heat |
| CN105099060A (en) * | 2015-08-12 | 2015-11-25 | 浙江工业大学 | Measure for preventing outer rotor fan rotation shaft from falling |
| CN205212596U (en) * | 2015-12-11 | 2016-05-04 | 温岭市大洋电器厂 | Draught fan |
-
2015
- 2015-12-11 CN CN201510922142.8A patent/CN105375671B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126988Y (en) * | 2007-12-13 | 2008-10-01 | 佛山市顺德区泛仕达机电有限公司 | End cap of external rotor axial fan |
| JP2013165620A (en) * | 2012-02-13 | 2013-08-22 | Minebea Co Ltd | Brushless motor and air blower |
| CN202749964U (en) * | 2012-08-21 | 2013-02-20 | 宁波贝德尔电讯电机有限公司 | Dustproof outer-rotor fan |
| CN103001379A (en) * | 2012-12-30 | 2013-03-27 | 台州市博洋机电有限公司 | External rotor electric machine |
| CN203352345U (en) * | 2013-06-20 | 2013-12-18 | 佛山市威灵洗涤电机制造有限公司 | A waterproof structure of an external rotor motor and an external rotor motor using the same |
| CN204200869U (en) * | 2014-10-27 | 2015-03-11 | 杭州恩斯克万达电动转向***有限公司 | A kind of bearing unit dispelled the heat |
| CN105099060A (en) * | 2015-08-12 | 2015-11-25 | 浙江工业大学 | Measure for preventing outer rotor fan rotation shaft from falling |
| CN205212596U (en) * | 2015-12-11 | 2016-05-04 | 温岭市大洋电器厂 | Draught fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114941637A (en) * | 2022-04-24 | 2022-08-26 | 马国山 | Motor cavity air pressure balancing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105375671B (en) | 2017-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220328 Address after: 317500 No. 17, 26th Street, East New Area, Wenling City, Taizhou City, Zhejiang Province (Building 2 and 3) Patentee after: Zhejiang Dayang fan Co.,Ltd. Address before: 317515 Cheng Nan Zhen Lin Ao Cun, Wenling City, Taizhou City, Zhejiang Province Patentee before: DAYANG ELECTRIC APPLIANCES FACTORY Patentee before: Taizhou Boyang electromechanical Co., Ltd |
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| TR01 | Transfer of patent right |