CN105041687A - Electric fan - Google Patents
Electric fan Download PDFInfo
- Publication number
- CN105041687A CN105041687A CN201510122867.9A CN201510122867A CN105041687A CN 105041687 A CN105041687 A CN 105041687A CN 201510122867 A CN201510122867 A CN 201510122867A CN 105041687 A CN105041687 A CN 105041687A
- Authority
- CN
- China
- Prior art keywords
- wheel hub
- external rotor
- electric fan
- end cap
- base portion
- 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.)
- Withdrawn
Links
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
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses an electric fan. The electric fan has an electric motor (5), which drives an axial fan (4). The blower (4) has a cup-shaped hub (9) with a front wall (9a) and a side wall (9b) from which extends a plurality of outer vanes (10). The motor (5) has an external rotor with a rotor cap (9) at which the front wall (9a) of the hub (9) is fixed. From the inner surface (9d) of the hub (9) and / or from the outer surface of the rotor cap (8) extend projecting formations (20, 21), which impinge on the rotor cap (8) and / or to the hub (9), if the fan (4) oscillate relative to the rotor in a predetermined extent and limit the extent of the oscillation of the fan (4) relative to the rotor.
Description
Technical field
The present invention relates to a kind of by motor-driven fan, particularly a kind of electric fan be applied in motor vehicle heat exchanger.
Background technique
Electric fan under prior art generally includes an electric motor and an axial fan.Described electric motor comprises an external rotor and an inner stator.Described axial fan comprises the wheel hub of a cup-shaped.Described axial fan also comprises a base portion and a sidewall.Described base surface is to described rotor and be connected on described rotor.Described sidewall extends a series of outer foil around described rotor and from described sidewall.But when operating, the vibration produced due to described electric drive motor is transferred to described electric fan, cause producing certain noise, described noise can disturb the ear of people, especially when low-speed running, disturbs more severe.
In order to solve above-mentioned noise problem, it is be connected on the rotor of motor by described wheel hub by one or more connection set including known elasticity vibration damper that the applicant provides a kind of scheme.
Another solution is the natural quality by wheel hub self, also namely utilizes flexible material to manufacture a wheel hub, and described flexible material utilizes the attribute of self to reduce described vibration, thus avoids using the connection set with elastic vibration damper.
Although above-mentioned two kinds of methods can solve the noise problem produced because of vibration, but when the vehicle being provided with described electric fan is when being subjected to a larger angular acceleration, described electric fan can produce by the impact of described angular acceleration and more significantly vibrate, thus may produce with the object of periphery and device and collide, such as heat exchanger etc.
In view of this, be necessary to develop a kind of electric fan, it can reduce the noise that vibration produces.
Summary of the invention
Object of the present invention aims to provide a kind of electric fan, solves the problem of above-mentioned noise.
The electric fan of described type provided by the invention includes:
One electric motor and an axial fan, described electric motor comprises an external rotor and an inner stator, described axial fan has a base portion and a sidewall, described axial fan also comprises the wheel hub of a cup-shaped, described base portion and rotor are oppositely arranged and are connected on rotor, described sidewall is around described rotor, and extend a series of outer foil from described sidewall, extend from the internal surface of wheel hub and/or the outer surface of rotor and have protruding structure, when electric fan relative rotor is in preset range internal vibration, described protruding structure can collide described rotor and/or described wheel hub, thus limit the scope of described electric fan relative rotor vibration.
Preferably, described external rotor comprises one near the end cap of the base portion of described wheel hub, and the base portion of described wheel hub is connected on the end cap of described external rotor by one or more connection set including elastic vibration damper respectively.
Preferably, each connection set described comprises the ring damper parts be made up of elastic material, the base portion of described wheel hub offers multiple through hole, described each ring damper parts are installed in the through hole of described correspondence, described electric fan also includes multiple fastening piece, and described each fastening piece fixes described wheel hub on the end cap of described external rotor through corresponding ring damper parts.
Preferably, described electric fan also comprises multiple tubular part be made by rigid material, and each tubular part is placed between described damper parts and corresponding fastening piece.
Preferably, described fastening piece is screw or a bolt with head, one end of described tubular part is a flange arrangement, described flange arrangement is placed between the end adjacent with described damper parts, the end of described fastening piece, and the other end of described tubular part is near the end cap of described external rotor.
Preferably, described damper parts are the ring of a cylindrical shape, and its axial intermediate portion is a circumferential groove, and described circumferential groove engages with the edge of the through hole that described wheel hub is offered.
Preferably, described wheel hub is made up of flexible material, and described external rotor comprises an end cap, and described end cap extends the base portion near described wheel hub, and the base portion of described wheel hub is connected to described end cap by one or more connection set.
The more feature of the present invention and advantage significantly embody in following description in detail.Described description in detail relates to example and the accompanying drawing of following indefiniteness.
In the present invention, above-mentioned optimum condition can combination in any on the basis meeting related domain general knowledge, obtains each preferred embodiment of the present invention.
Electric fan of the present invention, limits the scope of described electric fan relative rotor vibrations by extending to form protruding structure at the internal surface of wheel hub and/or the outer surface of rotor, thus reduces the noise vibrating and cause.
Accompanying drawing explanation
Fig. 1 is the front elevation of an electric fan provided by the invention.
Fig. 2 is the partial view of the wheel hub of electric fan under a magnification ratio.
Fig. 3 is the phantom of wheel hub in Fig. 2 linearly III-III.
Fig. 4 is a conversion embodiment similar to Fig. 3.
Embodiment
In following elaboration, the object be all for setting forth as details such as specific technique, interface, technology is not construed as limiting, to ensure that disclosed technological scheme can be understood in detail thoroughly here.But, those skilled in the art can understand, here the technology disclosed can be used in the specific embodiment beyond these details, engineering philosophy can be implemented as various mode of execution by such one of ordinary skill in the art, even if these mode of executions are not described in detail herein or show, but these mode of executions still drop in the middle of engineering philosophy, do not exceed its spirit and scope.In certain embodiments, some equipment known, circuit and methods are not described in detail, in order to avoid technology disclosed here describes be subject to unnecessary details redundancy elaboration.All here carry out relevant principle, visual angle and specific embodiment elaboration include the equivalent way of 26S Proteasome Structure and Function.In addition, the equivalent that these equivalent way comprise current known equivalent and further develop, such as the made further progress element can implementing said function, even if structure may be different.
Please refer to shown in Fig. 1 to Fig. 2, in known technology, described electric fan 1 comprises the supporting structure of a tabular or the opening 3 of air guide channel 2 and a ring.The opening 3 of described ring is rotatably installed with an axial fan 4.
Please also refer to shown in Fig. 3, described axial fan 4 is connected on the rotor 8 of an electric motor 5.
Described electric motor 5 comprises a stator 6.Described stator 6 is fixed on supporting structure or air guide channel 2 by a known mode.Such as, described known mode be can be and realized by a series of spoke 7.
Described electric motor 5 also comprises a rotor 8.Described rotor 8 comprises an end cap 8a.
Described axial fan 4 comprises the wheel hub 9 that is positioned at middle position, forms a series of bending blade 10 along described wheel hub 9.The outward edge of described a series of blade 10 contacts with a chow ring 11.
In the present embodiment, the wheel hub 9 of described axial fan 4 is connected on the end cap 8a of the rotor 8 of electric motor 5 by the one or more point on it or join domain 12.In the present embodiment, the quantity of described multiple point or join domain 12 is 3.Described three points or join domain 12 to described fan axle X-X between distance d be equal.In the present embodiment, the wheel hub 9 of described axial fan 4 is a cup shape.Described wheel hub 9 comprises a base portion 9a and the edge axially extended ring sidewall 9b along described base portion 9a.In present embodiment, described wheel hub 9 is roughly a cylindrical body.
The end cap 8a of the rotor 8 on described electric motor 5 extends along on the direction near base portion 9a with the base portion 9a close to described wheel hub 9, thus three points on the base portion 9a of wheel hub 9 or join domain 12 is connected on end cap 8a by the multiple connection sets 13 including elastic vibration damper.
Refer again to shown in Fig. 3, each connection set 3 comprises the damper parts 14 of a ring.Described damper parts 14 are made up of elastic material, such as, and elastomeric material (vulcanized rubber).
Each damper parts 14 are partially housed in the corresponding through hole 9c that described wheel hub 9a offers.In the present embodiment, described damper parts 14 are roughly the ring of a cylindrical shape, and its axial intermediate portion is a circumferential groove 14a, for engaging with the edge of the through hole 9c that described wheel hub 9 is offered.
Described fan 9 also comprises multiple fastening piece 15.Each fastening piece 15 through the opening 8b that the damper parts 14 on the end cap 8a on electric motor 5 and described end cap 8a offer so that the base portion 9a of wheel hub 9 is fixed on the end cap 8a of rotor 8.In present embodiment, described fastening piece 15 can be screw or the bolt that comprises head 15a.
Described fan 9 also comprises the tubular part 16 be positioned between described damper parts 14 and described fastening piece 15.In present embodiment, described tubular part 16 is made for rigid material, such as, and metallic material etc.In traditional sense, an end of described tubular part 16 is a flange arrangement 16a.Described flange arrangement 16a is placed between the head 15a of described fastening piece 15 end adjacent with described damper parts 14, and the other end of described tubular part 16 is near described end cap 8a.
Screw-thread fit on the opening 8b that screw thread on described fastening piece 15 and described end cap 8a offer with fixing described fastening piece 15 on described end cap 8a.
Refer again to the embodiment shown in Fig. 1 to Fig. 3, the internal surface 9d of described wheel hub 9 projects upwards along the side of described end cap 8a and is formed with protruding structure 20 and 21.Distance between the outer surface that can be preset described end cap 8a by the extension of the distal end of described protruding structure 20 and 21 to described protrusion means 20 and 21.In the present embodiment, described protruding structure 20 extends to form along the base portion 9a of described wheel hub 9 towards the direction of the base portion of described end cap 8a, and described protruding structure 21 extends to form on the direction of the sidewall of described end cap 8a along the sidewall 9b of described wheel hub 9.
Above-mentioned configuration, makes when described axial fan 4 performs the vibration in preset range relative to described end cap 8a, and described protruding structure 20 and 21 can collide described end cap 8a to limit the scope of vibration when described axial fan 4 rotates relative to described end cap 8a.
In the mode of execution of a conversion, to realize identical object on the outer surface that described protruding structure also can be formed at described end cap 8a.Further, in the mode of execution of another conversion, described protruding structure also can be given prominence on the outer surface of internal surface and/or the described end cap 8a being formed at described wheel hub 9, to realize identical object.
As shown in Figure 4, for said structure improve after another embodiment.The label stating the parts that label is crossed in fig. 4, the upper is constant.Described wheel hub 9 is made by flexible material, vibration that electric motor 5 produces that what it can be suitable weaken.
Meanwhile, described wheel hub 9 also can be connected on series of points on described end cap 8a or join domain 12.Wherein, described series of points or join domain 12 to described axial fan 4 axle X-X between distance equal.In these points or join domain 12, the base portion 9a of described wheel hub 9 coordinates a pad 22 to be connected on described end cap 8a by the fastening piece 15 of a correspondence, and described fastening piece 15 is a screw or a bolt.
Meanwhile, in the diagram, the protruding structure 20 and 21 extended from the internal surface 9d of wheel hub 9 has identical effect with the protruding structure 20 and 21 in Fig. 3.Meanwhile, the protruding structure 20 and 21 in Fig. 4 also can be selected to extend to form from the outer surface of described end cap 8a, or extends to form from the internal surface of described wheel hub 9 and the outer surface of described end cap 8a simultaneously.
Although the foregoing describe many specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, do not form the restriction of the technical program.Protection scope of the present invention limited by appended claims and equivalent thereof.Therefore, the scope that this technology discloses comprises the change that those those skilled in the art make in apparent scope.Unless really like this illustrated, mentioned " single " does not refer to " one and only have one ", and refers to " one or more ".Said structure, component and functionally equivalent are included by reference especially and are comprised by claim for one of ordinary skill in the art.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these mode of executions, but these change and amendment all falls into protection scope of the present invention.
Claims (9)
1. an electric fan (1), comprises an electric motor (5) and an axial fan (4); described electric motor (5) comprises an external rotor (8) and an inner stator (6), described axial fan (4) comprises the wheel hub (9) of a cup-shaped, described wheel hub (9) comprises a base portion (9a) and along the axially extended sidewall in base portion (9a) edge (9b), described base portion (9a) and described external rotor (8) are oppositely arranged and are fixed on described external rotor (8), described sidewall (9b) is around described external rotor (8), and extend a series of outer foil (10) along described sidewall (9b), it is characterized in that: the internal surface of described wheel hub (9) and/or the outer surface of described external rotor (8) are given prominence to and be formed with protruding structure (20,21), when described axial fan (4) performs the vibration in preset range relative to described external rotor (8), described protruding structure (20,21) described external rotor (8) is collided and/or described wheel hub (9) limits the oscillating region of described axial fan (4) relative to described external rotor (8) with this.
2. electric fan (1) as claimed in claim 1, it is characterized in that: described external rotor (8) comprises one near the end cap (8a) of the base portion (9a) of described wheel hub (9), and the base portion (9a) of described wheel hub (9) is connected on the end cap (8a) of described external rotor (8) by one or more connection set (13) including elastic vibration damper respectively.
3. electric fan (1) as claimed in claim 2, it is characterized in that: described each connection set (13) comprises elastic ring damper parts (14), the base portion (9a) of described wheel hub (9) offers multiple through hole (9c), described each ring damper parts (14) are installed in the through hole (9c) of described correspondence, described electric fan (1) also includes multiple fastening piece (15), described each fastening piece (15) fixes described wheel hub (9) on the end cap (8a) of described external rotor (8) through corresponding ring damper parts (14).
4. electric fan (1) as claimed in claim 3, is characterized in that: described ring damper parts are made up of elastic material.
5. electric fan (1) as claimed in claim 3, it is characterized in that: described electric fan (1) also comprises multiple tubular part (16) be made by rigid material, each tubular part (16) is placed on described damper parts (14) with between corresponding fastening piece (15).
6. electric fan (1) as claimed in claim 5, is characterized in that: described rigid material is metallic material.
7. electric fan (1) as claimed in claim 5, it is characterized in that: described fastening piece (15) is screw or a bolt with head (15a), one end of described tubular part (16) is a flange arrangement (16a), described flange arrangement (16a) is placed between the end adjacent with described damper parts (14), the end (15a) of described fastening piece (15), and the other end of described tubular part (16) is near the end cap (8a) of described external rotor (8).
8. as the electric fan (1) in claim 3 to 7 as described in any one, it is characterized in that: described damper parts (14) are the ring of a cylindrical shape, the outer surface of its axial intermediate portion establishes circumferential groove (14a), and described circumferential groove (14a) engages with the edge of the through hole (9c) that described wheel hub (9) is offered.
9. electric fan (1) as claimed in claim 1, it is characterized in that: described wheel hub (9) is made up of flexible material, described external rotor (8) comprises an end cap (8a), described end cap (8a) extends the base portion (9a) near described wheel hub (9), and the base portion (9a) of described wheel hub (9) is connected to described end cap (8a) by one or more connection set (13).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO2014U000060 | 2014-04-17 | ||
| ITTO2014U000060U ITTO20140060U1 (en) | 2014-04-17 | 2014-04-17 | ELECTROVENTILATORE OF COOLING, PARTICULARLY FOR A HEAT EXCHANGER OF A MOTOR VEHICLE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105041687A true CN105041687A (en) | 2015-11-11 |
Family
ID=54250057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510122867.9A Withdrawn CN105041687A (en) | 2014-04-17 | 2015-03-19 | Electric fan |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20150300374A1 (en) |
| JP (1) | JP2015206364A (en) |
| CN (1) | CN105041687A (en) |
| BR (1) | BR102015008590A2 (en) |
| DE (1) | DE102015105894A1 (en) |
| IT (1) | ITTO20140060U1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564845B (en) * | 2013-10-11 | 2017-07-21 | 英业达科技有限公司 | Fixture and its fan structure |
| JP5705945B1 (en) * | 2013-10-28 | 2015-04-22 | ミネベア株式会社 | Centrifugal fan |
| JP7126913B2 (en) | 2018-09-20 | 2022-08-29 | 東芝キヤリア株式会社 | Blower |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964579A (en) * | 1997-06-24 | 1999-10-12 | Rheem Manufacturing Company | Prestressed resilient compressor mount apparatus |
| US6456807B1 (en) * | 1999-06-03 | 2002-09-24 | Konica Corporation | Rotation stabilizing device |
| US7061155B1 (en) * | 2005-01-04 | 2006-06-13 | Asia Vital Component Co., Ltd. | Rotor device capable of dissipating heat and resisting foreign objects |
| CN102251975A (en) * | 2011-06-28 | 2011-11-23 | 无锡锡山特种风机有限公司 | Axial flow fan of explosion-proof-type external rotor motor |
| CN202851455U (en) * | 2011-11-14 | 2013-04-03 | 佛山市顺德区机灵电器有限公司 | Column type multifunctional electric fan |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5663604A (en) * | 1994-12-28 | 1997-09-02 | Nidec Corporation | Brushless motor |
| JP3490927B2 (en) * | 1999-05-19 | 2004-01-26 | ニチアス株式会社 | How to attach a vibrating floating washer to the heat shield |
| DE10305649A1 (en) * | 2003-02-12 | 2004-08-26 | Robert Bosch Gmbh | External rotor motor |
| US20060103245A1 (en) * | 2004-11-12 | 2006-05-18 | Siemens Vdo Automotive Inc. | Engine cooling motor-module ventilation configuration |
| JP4682854B2 (en) * | 2006-01-25 | 2011-05-11 | 株式会社デンソー | Blower |
| DE102009003056A1 (en) * | 2009-05-13 | 2010-11-18 | Robert Bosch Gmbh | Adjusting device for a rotary body, as well as rotary body |
-
2014
- 2014-04-17 IT ITTO2014U000060U patent/ITTO20140060U1/en unknown
-
2015
- 2015-03-19 CN CN201510122867.9A patent/CN105041687A/en not_active Withdrawn
- 2015-04-16 BR BR102015008590A patent/BR102015008590A2/en not_active Application Discontinuation
- 2015-04-17 US US14/689,832 patent/US20150300374A1/en not_active Abandoned
- 2015-04-17 JP JP2015084701A patent/JP2015206364A/en active Pending
- 2015-04-17 DE DE102015105894.4A patent/DE102015105894A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964579A (en) * | 1997-06-24 | 1999-10-12 | Rheem Manufacturing Company | Prestressed resilient compressor mount apparatus |
| US6456807B1 (en) * | 1999-06-03 | 2002-09-24 | Konica Corporation | Rotation stabilizing device |
| US7061155B1 (en) * | 2005-01-04 | 2006-06-13 | Asia Vital Component Co., Ltd. | Rotor device capable of dissipating heat and resisting foreign objects |
| CN102251975A (en) * | 2011-06-28 | 2011-11-23 | 无锡锡山特种风机有限公司 | Axial flow fan of explosion-proof-type external rotor motor |
| CN202851455U (en) * | 2011-11-14 | 2013-04-03 | 佛山市顺德区机灵电器有限公司 | Column type multifunctional electric fan |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO20140060U1 (en) | 2015-10-17 |
| DE102015105894A1 (en) | 2015-10-22 |
| BR102015008590A2 (en) | 2016-04-05 |
| JP2015206364A (en) | 2015-11-19 |
| US20150300374A1 (en) | 2015-10-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20151111 |