CN109185198A - A kind of protection type external rotor axial-flow fan - Google Patents
A kind of protection type external rotor axial-flow fan Download PDFInfo
- Publication number
- CN109185198A CN109185198A CN201811312809.2A CN201811312809A CN109185198A CN 109185198 A CN109185198 A CN 109185198A CN 201811312809 A CN201811312809 A CN 201811312809A CN 109185198 A CN109185198 A CN 109185198A
- Authority
- CN
- China
- Prior art keywords
- external rotor
- rotor
- end cap
- bearing
- annular
- 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.)
- Pending
Links
- 239000000428 dust Substances 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 18
- 230000004888 barrier function Effects 0.000 abstract description 4
- 230000003749 cleanliness Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000008595 infiltration Effects 0.000 abstract description 4
- 238000001764 infiltration Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
- F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of protection type external rotor axial-flow fans, including external rotor electric machine, fan housing, fan blade, terminal box and dust hood, the external rotor electric machine includes shaft, rotor, stator, end cap, bearing group, casing and plug, the inserted terminal of the rotor and end cap forms concave-convex clearance fit, the fan housing and dust hood are bolted on together and by external rotor electric machine and the blade cover being fixed in shaft in the inner cavity of formation, the terminal box is fixed on end cap, the infiltration of water is prevented by the positive pressure gas flow formed between the rotor and end cap of rotation, the water droplet sputtered by fourth annular convex barrier, water droplet is set to leave motor along the inclined-plane of the second annular protrusion, fall the dust in inspiration blower in air by adding the dust hood primary filtration with metal screen, while reducing damage of the dust to blower , increase the cleanliness for sending out wind.
Description
[technical field]
The present invention relates to the technical field of external rotor axial-flow fan, especially a kind of skill of protection type external rotor axial-flow fan
Art field.
[background technique]
Currently, external rotor electric machine is widely used in the occasions such as household ventilation fan, instrument, smoke exhaust ventilator, shoe-cleaning machine, advantage
It is big rotary inertia, good heat dissipation, saves copper wire, good market prospect.External rotor axial-flow fan is a kind of using external rotor electric
The common air supply device of machine, due to of simple structure and low cost, and the larger advantage of ventilation volume of blowing, therefore it is extensive
Ground application.But outside due to External rotor electric machine rotor, the special construction including stator determines that it can not accomplish to be fully sealed,
Can not effectively waterproof, can only be used under dry operating condition, therefore outdoors or the environment of rain, general daily outer turn
Sub- axial flow blower is difficult to realize work.
[summary of the invention]
The object of the invention is to solve the problems of the prior art, a kind of protection type external rotor axial-flow fan, energy are proposed
Enough infiltrations that water is prevented by the positive pressure gas flow formed between the rotor and end cap of rotation, are splashed by fourth annular convex barrier
The water droplet penetrated makes water droplet leave motor along the inclined-plane of the second annular protrusion, at the beginning of adding the dust hood with metal screen
Step filters out the dust in inspiration blower in air, while reducing damage of the dust to blower, increases and sends out the clean of wind
Cleanliness.
To achieve the above object, the invention proposes a kind of protection type external rotor axial-flow fans, including external rotor electric machine, wind
Cover, fan blade, terminal box and dust hood, the external rotor electric machine include shaft, rotor, stator, end cap, bearing group, casing and
The side center of plug, the end cap is equipped with the cylinder with central through hole, and the plug is fixed on the screw thread of the end cap other side
In hole, the cylinder to raise upward is inserted in the central through hole of stator, and the bearing group includes first bearing and second
Bearing, the first bearing and second bearing are separately fixed at the first bearing seat and second bearing seat of the central through hole of cylinder
In, the shaft is fixed on rotor and one end of shaft by casing and is located on the inner ring of first bearing and second bearing, institute
The inserted terminal for stating rotor and end cap forms concave-convex clearance fit, and the fan housing and dust hood are bolted on together and will be outer
In the inner cavity of formation, the terminal box is fixed on end cap for rotor electric machine and the blade cover being fixed in shaft.
Preferably, the first bearing is arranged close to the end of rotor and is connect with casing by pressure spring.
Preferably, described sleeve pipe stretches out rotor far from the one side of end cap and is inclined-plane.
Preferably, first annular protrusion, first annular recessed is respectively equipped with from axle center on the inserted terminal of the end cap outward
Slot and the second annular protrusion, the inserted terminal of the rotor are equipped with the matched with first annular protrusion and first annular groove
Second ring groove and third annular protrusion are additionally provided with positioned at third annular protrusion and the second convex annular on the inserted terminal of the rotor
Fourth annular protrusion between rising.
Preferably, one side of second annular protrusion close to axle center is inclined-plane.
Preferably, the dust hood is equipped with metal screen.
Beneficial effects of the present invention: the present invention prevents water by the positive pressure gas flow formed between the rotor and end cap of rotation
Infiltration, the water droplet sputtered by fourth annular convex barrier makes water droplet leave motor along the inclined-plane of the second annular protrusion, leads to
It crosses addition and falls dust in inspiration blower in air with the dust hood primary filtration of metal screen, reducing dust to blower
While damage, the cleanliness for sending out wind is increased.
Feature and advantage of the invention will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
Fig. 1 is a kind of main view of protection type external rotor axial-flow fan of the present invention；
Fig. 2 is a kind of structural schematic diagram of the external rotor electric machine of protection type external rotor axial-flow fan of the present invention；
Fig. 3 is the enlarged drawing at the A of Fig. 2.
In figure: 1- external rotor electric machine, 11- shaft, 12- rotor, 121- second annular groove, 122- third annular protrusion,
123- fourth annular protrusion, 124- water guide line, 13- stator, 14- end cap, 141- cylinder, 142- first annular groove, 143-
One annular protrusion, the second annular protrusion of 144-, 15- bearing group, 151- first bearing, 152- second bearing, 16- casing, 17- are stifled
Head, 2- fan housing, 3- fan blade, 4- terminal box, 5- dust hood.
[specific embodiment]
Refering to fig. 1, Fig. 2 and Fig. 3, a kind of protection type external rotor axial-flow fan of the present invention, including external rotor electric machine 1, fan housing
2, fan blade 3, terminal box 4 and dust hood 5, the external rotor electric machine 1 include shaft 11, rotor 12, stator 13, end cap 14, axis
Group 15, casing 16 and plug 17 are held, the side center of the end cap 14 is equipped with the cylinder 141 with central through hole, the plug
17 are fixed in the threaded hole of 14 other side of end cap, and the cylinder 141 to raise upward is inserted in the central through hole of stator 13,
The bearing group 15 includes first bearing 151 and second bearing 152, and the first bearing 151 and second bearing 152 are distinguished
It is fixed in the first bearing seat and second bearing seat of the central through hole of cylinder 141, the shaft 11 is fixed on by casing 16
On rotor 12 and one end of shaft 11 is located on the inner ring of first bearing 151 and second bearing 152, the rotor 12 and end cap 14
Inserted terminal form concave-convex clearance fit, the fan housing 2 and dust hood 5 are bolted on together and by external rotor electric machine 1
And the fan blade 3 being fixed in shaft 11 covers in the inner cavity to be formed, and the terminal box 4 is fixed on end cap 14, and described first
Bearing 151 is arranged close to the end of rotor 12 and is connect with casing 16 by pressure spring, described sleeve pipe 16 far from end cap 14 one
Face stretches out rotor 12 and is inclined-plane, is respectively equipped with first annular raised 143 on the inserted terminal of the end cap 14 outward from axle center, the
One annular groove 142 and the second annular protrusion 144, the inserted terminal of the rotor 12 are equipped with and first annular raised 143 and the
The second annular groove 121 and third annular protrusion 122 that one annular groove 142 matches, on the inserted terminal of the rotor 12 also
Equipped with the fourth annular protrusion 123 between third annular protrusion 122 and the second annular protrusion 144, second convex annular
Playing 144 one side close to axle center is inclined-plane, and the dust hood 5 is equipped with metal screen.
The course of work of the present invention:
During the work time, rotor 12 drives shaft 11 by casing 16 to a kind of protection type external rotor axial-flow fan of the present invention
And be fixed on fan blade 3 in shaft 11 and rotate, air from 5 side of dust hood after the metal screen filtering on dust hood 5 from
It is sent out in fan housing 2.
First annular raised the 143 of end cap 14 are inserted into the second annular groove 121 of rotor 12, the third ring of rotor 12
Shape protrusion 122 is inserted into the first annular groove 142 of inlet side lid 14, and first annular raised 143, second annular groove 121,
There are gaps between third annular protrusion 122 and first annular groove 142, and the air shape between gap can be made when rotor 12 rotates
It at positive pressure gas flow, is constantly flowed outwardly inside motor, prevents the entrance of water.When motor is by the water sputtered, fourth annular
Protrusion 123 can prevent water droplet from entering motor, and the water droplet being blocked then can drop down onto the second convex annular along fourth annular protrusion 123
It rises on 144, finally again as the inclined-plane of the second annular protrusion 144 leaves.The inclined surface of casing 16, which can guide, sputters at outer turn
Water on sub-motor 1 leaves along watchcase, so that ponding be avoided to enter inside external rotor electric machine 1 along shaft 11.
The present invention prevents the infiltration of water by the positive pressure gas flow formed between the rotor and end cap of rotation, passes through Fourth Ring
The water droplet of shape convex barrier sputtering, makes water droplet leave motor along the inclined-plane of the second annular protrusion, is filtered by addition with metal
The dust hood primary filtration of net falls the dust in inspiration blower in air, while reducing damage of the dust to blower, increases
Send out the cleanliness of wind.
Above-described embodiment is the description of the invention, is not limitation of the invention, after any pair of simple transformation of the present invention
Scheme all belong to the scope of protection of the present invention.
Claims (6)
1. a kind of protection type external rotor axial-flow fan, it is characterised in that: including external rotor electric machine (1), fan housing (2), fan blade (3),
Terminal box (4) and dust hood (5), the external rotor electric machine (1) include shaft (11), rotor (12), stator (13), end cap
(14), the side center of bearing group (15), casing (16) and plug (17), the end cap (14) is equipped with the column with central through hole
Body (141), the plug (17) are fixed in the threaded hole of end cap (14) other side, and the cylinder (141) to raise upward is inserted
Enter in the central through hole of stator (13), the bearing group (15) includes first bearing (151) and second bearing (152), institute
The first bearing (151) and second bearing (152) stated are separately fixed at the first bearing seat and of the central through hole of cylinder (141)
In two bearing bracket, the shaft (11) is fixed on rotor (12) by casing (16) and one end of shaft (11) is located at first axle
On the inner ring for holding (151) and second bearing (152), the inserted terminal of the rotor (12) and end cap (14) forms concave-convex gap and matches
It closes, the fan housing (2) and dust hood (5) are bolted on together and by external rotor electric machine (1) and are fixed on shaft
(11) fan blade (3) on covers in the inner cavity to be formed, and the terminal box (4) is fixed on end cap (14).
2. a kind of protection type external rotor axial-flow fan as described in claim 1, it is characterised in that: the first bearing (151)
It is arranged close to the end of rotor (12) and is connect with casing (16) by pressure spring.
3. a kind of protection type external rotor axial-flow fan as described in claim 1, it is characterised in that: described sleeve pipe (16) is far from end
The one side for covering (14) stretches out rotor (12) and is inclined-plane.
4. a kind of protection type external rotor axial-flow fan as described in claim 1, it is characterised in that: the grafting of the end cap (14)
It is respectively equipped with first annular raised (143), first annular groove (142) and the second annular protrusion (144) on end outward from axle center,
The inserted terminal of the rotor (12) is equipped with second matched with first annular raised (143) and first annular groove (142)
Annular groove (121) and third annular protrusion (122) are additionally provided with positioned at third annular protrusion on the inserted terminal of the rotor (12)
(122) fourth annular between the second annular protrusion (144) is raised (123).
5. a kind of protection type external rotor axial-flow fan as described in claim 1, it is characterised in that: second annular protrusion
(144) one side close to axle center is inclined-plane.
6. a kind of protection type external rotor axial-flow fan as described in claim 1, it is characterised in that: set on the dust hood (5)
There is metal screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312809.2A CN109185198A (en) | 2018-11-06 | 2018-11-06 | A kind of protection type external rotor axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811312809.2A CN109185198A (en) | 2018-11-06 | 2018-11-06 | A kind of protection type external rotor axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109185198A true CN109185198A (en) | 2019-01-11 |
Family
ID=64942153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811312809.2A Pending CN109185198A (en) | 2018-11-06 | 2018-11-06 | A kind of protection type external rotor axial-flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109185198A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202684Y (en) * | 2008-05-27 | 2009-03-04 | 杭州微光电子设备厂 | Outer rotor axial flow fan |
| CN202273884U (en) * | 2011-09-07 | 2012-06-13 | 杭州微光电子股份有限公司 | Outer rotor axial flow fan with labyrinth waterproof structure |
| CN205081620U (en) * | 2015-08-12 | 2016-03-09 | 浙江工业大学 | Prevent fan that external rotor fan rotor drops |
| WO2017067125A1 (en) * | 2015-10-22 | 2017-04-27 | 中山大洋电机股份有限公司 | Waterproof structure for external rotor motor |
| CN206785686U (en) * | 2017-05-15 | 2017-12-22 | 刘宜璐 | A kind of environment-friendly type electric fan with purification function |
| CN206908426U (en) * | 2017-07-19 | 2018-01-19 | 广东泛仕达机电有限公司 | A kind of motor waterproof and dustproof structure |
| CN209212607U (en) * | 2018-11-06 | 2019-08-06 | 杭州雪尔电器有限公司 | A kind of protection type external rotor axial-flow fan |
-
2018
- 2018-11-06 CN CN201811312809.2A patent/CN109185198A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202684Y (en) * | 2008-05-27 | 2009-03-04 | 杭州微光电子设备厂 | Outer rotor axial flow fan |
| CN202273884U (en) * | 2011-09-07 | 2012-06-13 | 杭州微光电子股份有限公司 | Outer rotor axial flow fan with labyrinth waterproof structure |
| CN205081620U (en) * | 2015-08-12 | 2016-03-09 | 浙江工业大学 | Prevent fan that external rotor fan rotor drops |
| WO2017067125A1 (en) * | 2015-10-22 | 2017-04-27 | 中山大洋电机股份有限公司 | Waterproof structure for external rotor motor |
| CN206785686U (en) * | 2017-05-15 | 2017-12-22 | 刘宜璐 | A kind of environment-friendly type electric fan with purification function |
| CN206908426U (en) * | 2017-07-19 | 2018-01-19 | 广东泛仕达机电有限公司 | A kind of motor waterproof and dustproof structure |
| CN209212607U (en) * | 2018-11-06 | 2019-08-06 | 杭州雪尔电器有限公司 | A kind of protection type external rotor axial-flow fan |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |