CN102192188A - Hand-held machine tool fan - Google Patents
Hand-held machine tool fan Download PDFInfo
- Publication number
- CN102192188A CN102192188A CN2011100857923A CN201110085792A CN102192188A CN 102192188 A CN102192188 A CN 102192188A CN 2011100857923 A CN2011100857923 A CN 2011100857923A CN 201110085792 A CN201110085792 A CN 201110085792A CN 102192188 A CN102192188 A CN 102192188A
- Authority
- CN
- China
- Prior art keywords
- fan
- machine tool
- fan blade
- held machine
- hand
- 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
- 230000001788 irregular Effects 0.000 claims abstract description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 6
- 238000003801 milling Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000029777 axis specification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- 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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- 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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a hand-held machine tool fan with at least three fan blades (12). The fan blades have at least partially identical effective regions (14) in operation. The invention suggests that the fan blades (12) are arranged at irregular distances (16,18) from one another, and/or have effective surfaces (20) with different structures.
Description
Technical field
The present invention relates to a kind of hand-held machine tool fan.
Background technique
Proposed a kind of hand-held machine tool fan with at least three fan blade, these fan blade are in operation and have to the identical zone of action of small part.At this, these fan blade are provided with relative to each other with the distance of rule and have an identical acting surface of shape.
Summary of the invention
The present invention relates to a kind of hand-held machine tool fan with at least three fan blade, these fan blade are in operation and have to the identical zone of action of small part.
The present invention proposes: these fan blade are provided with relative to each other with irregular distance and/or have a differently acting surface of structure." fan blade " is construed as such element especially, and this element is set for by acting surface and makes the air movement that is arranged in the zone of action at least.Preferably these fan blade can be supported around fan axis rotational motion ground.These fan blade advantageously have a main extended surface, and this main extended surface is arranged essentially parallel to the radial direction of fan axis and particularly advantageously is substantially perpendicular to the circumferencial direction orientation of fan axis.Here " substantially parallel or vertical " be construed as at main extended surface and have radially or between the normal of circumferencial direction and main extended surface less than 60 the degree, advantageously less than 30 the degree, particularly advantageously less than 10 the degree angles.Particularly main extended surface can be advantageously to make less than 30 degree agley." setting " particularly is construed as special configuration and/or design." have to the identical zone of action of small part " and should be interpreted as especially, the rotor of fan blade surrounds an identical space at least in part around the fan axis." acting surface " is construed as a face of fan blade especially, and this face is set on the air stream that transfers energy to when fan blade centers on the rotation of fan axis in the zone of action.The acting surface of preferred fan blade is parallel to the main extended surface orientation of identical fan blade.Term " is provided with relative to each other with irregular distance " and particularly is construed as, between at least one first fan blade and adjacent second fan blade on a radius of fan axis along the circumferential direction distance and between this second fan blade and adjacent three fan blade on this radius along the circumferential direction distance be different sizes.Preferred fan blade is provided with around the asymmetric distribution of fan axis ground.Here " asymmetric " is construed as, and is positioned on the acting surface and is arranged on a line that centers on the point on the fan axis determination radius only to form erratic polygonal." differently Gou Zao acting surface " particularly is construed as such acting surface, and these acting surfaces are on the distance with respect to the fan axis, in size and/or advantageously different in shape.Can realize especially softly effectively operation simultaneously by the structure of hand-held machine tool fan of the present invention.Particularly can avoid the undesirable tone in the frequency range that can hear, or rather under the situation of different and low especially rotating speed.Thereby can realize having few fan blade and high efficiency special fan softly in addition.
Propose in another structural scheme, these fan blade have the differently suction edge of structure, can realize special suction noise softly thus when operation." suction edge " particularly is construed as the edge of fan blade, and this edge forms a face in fan blade in the solid of rotation of fan axis, and air is in operation by this face and flows in the zone of action of fan blade." differently Gou Zao edge " particularly is construed as such edge, and it is in shape and/or advantageously different on respect to the distance of fan axis at least.
Propose in addition, these fan blade have the differently output edge of structure, fan noise that thus can the special outlet side softly of realization in service." output edge " particularly is construed as such edge of fan blade, and this edge forms a face in fan blade in the solid of rotation of fan axis, and air is in operation by this face and flows out from the zone of action of fan blade.
Propose in addition, at least two fan blade are provided with in pairs, softly fan in the time of can realizing moving thus simple in structurely." be provided with in pairs " and particularly be construed as the segment distance ground setting apart each other on a radius of at least two fan blade adjacent one another are, this distance is 75% of fan blade in this fan blade that is provided with in pairs and the distance between the three fan blade to the maximum, advantageously is 50% to the maximum.
Propose in addition, fan blade is set for air is moved on the circumferencial direction of fan axis basically, can provide thus efficient high and also structure on simply can be integrated in hand-held machine tool fan in the housing.Preferred fan blade preferably makes air outwards motion on circular track, particularly helical orbit.Here " outwards " particularly be construed as refer to from the fan axis from direction.
Propose in addition, the hand-held machine tool fan has a fan hub, and this fan hub is set for air-flow direction is turned to above 45 degree." fan hub " particularly is construed as such element, and this element connects the unit of fan blade and drive fan blade.Term " air-flow direction " particularly is construed as such direction, and air is gone up on one point on this direction fifty-fifty at run duration and flowed.Can realize the air stream that advantageously extends by fan hub of the present invention.
Propose in a kind of favourable structural form of the present invention, the center of gravity of fan blade is arranged on the fan near axis, can realize extra high smoothness of operation and little wearing and tearing thus.At this on the one hand, " near " be construed as at interval less than 10mm, preferably be provided with less than 2mm.
Propose in addition, the hand-held machine tool fan has a stabilizing ring, and this stabilizing ring is fan attachment blade on the circumferencial direction of fan axis at least, can realize the fan blade that approaches thus especially." stabilizing ring " is construed as a ring-type element especially, and this ring-type element is set for and is acting on a power on the circumference on fan blade.
The present invention relates to a kind of hand-held machine tool in addition with hand-held machine tool fan, wherein it is contemplated that be used for hand-held machine tool fan operation, the professional workforce thinks significant all hand-held machine tools, particularly for example rig, hammer drill and/or chiso-mallet, saw, planer, driver, milling machine, milling machine, angle grinding machine and/or multi-purpose tool can provide softly and hand-held machine tool available ventilation thus.
Description of drawings
Other advantage provides in the description of drawings of back.One embodiment of the present of invention shown in the drawings.Accompanying drawing, specification and claims comprise a large amount of assemblage characteristics.The professional workforce also can meet the destination and individually consider these features and it is combined into significant other combination.In the accompanying drawing:
Fig. 1 illustrates the perspective view according to hand-held machine tool fan of the present invention, and
Fig. 2 illustrates the cut-away section of the hand-held machine tool of the hand-held machine tool fan with Fig. 1.
Embodiment
Fig. 1 illustrates the hand-held machine tool fan 10 with 21 fan blade 12, a fan hub 30 and a stabilizing ring 34 of the present invention.This hand-held machine tool fan 10 is constructed as radial fan.As shown in Figure 2, hand-held machine tool fan 10 can not be connected with fan shaft 38 with relatively rotating.Hand-held machine tool fan 10 can be driven around fan axis 28 rotationally by fan shaft 38.
The main extended surface of each fan blade 12 is perpendicular to circumferencial direction 26 orientations of fan axis 28.Therefore hand-held machine tool fan 10 is constructed as radial fan.These fan blade 12 partly are arranged on the same radius of fan axis 28 all.They have the identical zone of action of part 14 when operation thus.Fan blade 12 makes motion on the circumferencial direction 26 of air at fan axis 28 basically when operation, move on the helical orbit that leaves fan axis 28 or rather.
These fan blade 12 are provided with relative to each other with irregular distance 16,18.First fan blade 12 ' and the second adjacent fan blade 12 " between distance 16 be different from first fan blade 12 ' and three fan blade 12 ' " between distance 18, differ each other or rather and surpass 10%.
Fan blade 12 has the differently acting surface 20 of structure.Fig. 2 illustrates a part of section of the zone of action 14 between hand-held machine tool fan 10 and two fan blade 12.A fan blade 12 only is shown in background.Shown in fan blade 12 on possible, the acting surface 20 of structure differently is shown.The professional workforce thinks that significant other acting surface shape and/or acting surface size are feasible.
Fan blade 12 has suction edge 22 of differently constructing and the output edge 24 of differently constructing.These suck edges 22 from fan hub 30 arcs ground extend to from fan axis 28 fingers from direction.Fan hub 30 and a surface of revolution that is formed around fan axis 28 by one of them suction edge 22 surround suction zone 40, and air passes through this and sucks in 40 inflow zones of action 14, zone.Air is arranged essentially parallel to fan axis 28 and flows in the suction zone 40.Therefore, fan hub 30 time makes air-flow direction 32 turn on a plane that is parallel to fan axis 28 orientations in operation to surpass 45 degree.Output edge 24 is made of the edge that deviates from 28 settings of fan axis of fan blade 12.Possible suction edge 22 shown in Figure 2 and possible output edge 24.The professional workforce thinks that other shape at significant suction edge and output edge is feasible.
In these fan blade at least two 12 ', 12 " be provided with in couples.These two fan blade 12 ', 12 " between distance be about the fan blade 12 ', 12 that is provided with in pairs at these " in fan blade and another fan blade 12,12 ' " between half size of minimum range.
The stabilizing ring 34 of hand-held machine tool fan 10 is constructed as ring surface.Should stable change and surround fan axis 28 coaxially and perpendicular to fan axis 28 orientations.Stabilizing ring 34 interconnects fan blade 12.So stabilizing ring 34 fan attachment blade 12 on the circumferencial direction 26 of fan axis 28.The center of gravity of all fan blade 12, fan hub 30 and stabilizing ring 34 is separately positioned on the fan axis 28.An only common center of gravity that can be to conversion fan blade, fan hub and stabilizing ring is arranged on the fan axis.For example the center of gravity of fan blade and the center of gravity of stabilizing ring are compensated at this.
As shown in Figure 2, the zone of action 14 is surrounded by the casing member 42,44 of hand-held machine tool 36 at least in part in the axial direction.Fan shaft 38 is bearing in the casing member 42,44.A drive motor that is not shown specifically of hand-held machine tool 36 rotates at run duration drive fan axle 38.
Claims (9)
1. hand-held machine tool fan, have at least three fan blade (12), these fan blade are in operation and have to the identical zone of action of small part (14), it is characterized in that these fan blade (12) are provided with and/or have differently the acting surface (20) of structure relative to each other with irregular distance (16,18).
2. hand-held machine tool fan according to claim 1 is characterized in that, these fan blade (12) have the differently suction edge (22) of structure.
3. hand-held machine tool fan according to claim 1 and 2 is characterized in that, these fan blade (12) have the differently output edge (24) of structure.
4. according to one of aforesaid right requirement described hand-held machine tool fan, it is characterized in that at least two fan blade (12) are arranged in pairs.
5. according to one of aforesaid right requirement described hand-held machine tool fan, it is characterized in that these fan blade (12) are set for and make air go up motion at the circumferencial direction (26) of fan axis (28) basically.
6. according to one of aforesaid right requirement described hand-held machine tool fan, it is characterized in that, be provided with fan hub (30), this fan hub is set for air-flow direction (32) is turned to above 45 degree.
7. according to one of aforesaid right requirement described hand-held machine tool fan, it is characterized in that the center of gravity of these fan blade (12) is arranged near the fan axis (28).
8. according to one of aforesaid right requirement described hand-held machine tool fan, it is characterized in that be provided with stabilizing ring (34), this stabilizing ring is fixed these fan blade (12) at least on the circumferencial direction (26) of fan axis (28).
9. hand-held machine tool has according to the described hand-held machine tool fan of one of aforesaid right requirement (10).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010002673.5 | 2010-03-09 | ||
| DE102010002673A DE102010002673A1 (en) | 2010-03-09 | 2010-03-09 | Hand tools fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102192188A true CN102192188A (en) | 2011-09-21 |
Family
ID=43923401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100857923A Pending CN102192188A (en) | 2010-03-09 | 2011-03-08 | Hand-held machine tool fan |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102192188A (en) |
| DE (1) | DE102010002673A1 (en) |
| GB (1) | GB2478646A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967819A (en) * | 2014-05-26 | 2014-08-06 | 浙江理工大学 | Omni-directional fan with denoising function |
| CN104584390A (en) * | 2012-08-31 | 2015-04-29 | 西门子公司 | Rotor of electrical machine, and electrical machine |
| CN104832459A (en) * | 2014-02-10 | 2015-08-12 | 珠海格力电器股份有限公司 | Fan and air conditioner comprising same |
| CN108953222A (en) * | 2018-08-16 | 2018-12-07 | 泛仕达机电股份有限公司 | A kind of centrifugal impeller |
| CN109773635A (en) * | 2013-07-12 | 2019-05-21 | 南京德朔实业有限公司 | Hand-held sander |
| CN113027813A (en) * | 2019-12-24 | 2021-06-25 | 建准电机工业股份有限公司 | Fan wheel and cooling fan with same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2984971B1 (en) * | 2011-12-21 | 2019-08-23 | Seb Sa | CENTRIFUGAL VENTILATION WHEEL, CORRESPONDING FAN AND COOKING APPARATUS INCLUDING SUCH FAN |
| ITUB20152807A1 (en) * | 2015-08-03 | 2017-02-03 | Ma Ti Ka S R L | FAN FOR OVENS FOR COOKING FOOD |
| CN108425882A (en) * | 2018-05-31 | 2018-08-21 | 陈靖 | A kind of electric hair dryer fan blade |
| CN108953236B (en) * | 2018-07-17 | 2019-11-26 | 青岛永胜昌风机科技有限公司 | A kind of rotor structure of centrifugal blower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10153194A (en) * | 1996-11-22 | 1998-06-09 | Hitachi Koki Co Ltd | Centrifugal fan |
| CN1663749A (en) * | 2004-03-04 | 2005-09-07 | 日立工机株式会社 | Power tool |
| CN2748676Y (en) * | 2004-11-23 | 2005-12-28 | 珠海格力电器股份有限公司 | Fan impeller for air conditioner |
| CN1752455A (en) * | 2004-09-24 | 2006-03-29 | 松下电器产业株式会社 | Crossflow fan |
| WO2009135698A1 (en) * | 2008-05-05 | 2009-11-12 | Robert Bosch Gmbh | Fan and method for operating a fan |
| CN201416570Y (en) * | 2009-03-12 | 2010-03-03 | 上虞专用风机有限公司 | Impeller of high-temperature centrifugal fan |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2046360A (en) * | 1979-03-31 | 1980-11-12 | Aes Plastics Ltd | Fluid impeller |
| US6629818B2 (en) * | 2001-02-09 | 2003-10-07 | The Toro Company | Impeller for use with portable blower/vacuums |
| US6514036B2 (en) * | 2001-04-27 | 2003-02-04 | Black & Decker Inc. | Radial flow fan with impeller having blade configuration for noise reduction |
-
2010
- 2010-03-09 DE DE102010002673A patent/DE102010002673A1/en not_active Withdrawn
-
2011
- 2011-03-08 GB GB1103949A patent/GB2478646A/en not_active Withdrawn
- 2011-03-08 CN CN2011100857923A patent/CN102192188A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10153194A (en) * | 1996-11-22 | 1998-06-09 | Hitachi Koki Co Ltd | Centrifugal fan |
| CN1663749A (en) * | 2004-03-04 | 2005-09-07 | 日立工机株式会社 | Power tool |
| CN1752455A (en) * | 2004-09-24 | 2006-03-29 | 松下电器产业株式会社 | Crossflow fan |
| CN2748676Y (en) * | 2004-11-23 | 2005-12-28 | 珠海格力电器股份有限公司 | Fan impeller for air conditioner |
| WO2009135698A1 (en) * | 2008-05-05 | 2009-11-12 | Robert Bosch Gmbh | Fan and method for operating a fan |
| CN201416570Y (en) * | 2009-03-12 | 2010-03-03 | 上虞专用风机有限公司 | Impeller of high-temperature centrifugal fan |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104584390A (en) * | 2012-08-31 | 2015-04-29 | 西门子公司 | Rotor of electrical machine, and electrical machine |
| CN104584390B (en) * | 2012-08-31 | 2017-02-22 | 西门子公司 | Rotor of electrical machine, and electrical machine |
| US9787163B2 (en) | 2012-08-31 | 2017-10-10 | Siemens Aktiengesellschaft | Rotor of an electrical machine and electrical machine |
| CN109773635A (en) * | 2013-07-12 | 2019-05-21 | 南京德朔实业有限公司 | Hand-held sander |
| CN104832459A (en) * | 2014-02-10 | 2015-08-12 | 珠海格力电器股份有限公司 | Fan and air conditioner comprising same |
| CN104832459B (en) * | 2014-02-10 | 2018-01-02 | 珠海格力电器股份有限公司 | Fan and air conditioner comprising same |
| CN103967819A (en) * | 2014-05-26 | 2014-08-06 | 浙江理工大学 | Omni-directional fan with denoising function |
| CN103967819B (en) * | 2014-05-26 | 2016-08-24 | 浙江理工大学 | A kind of 360 ° of fans of noise reduction |
| CN108953222A (en) * | 2018-08-16 | 2018-12-07 | 泛仕达机电股份有限公司 | A kind of centrifugal impeller |
| CN113027813A (en) * | 2019-12-24 | 2021-06-25 | 建准电机工业股份有限公司 | Fan wheel and cooling fan with same |
| CN113027813B (en) * | 2019-12-24 | 2023-09-15 | 建准电机工业股份有限公司 | Fan wheel and heat radiation fan with same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201103949D0 (en) | 2011-04-20 |
| GB2478646A (en) | 2011-09-14 |
| DE102010002673A1 (en) | 2011-09-15 |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110921 |