CN105221484A - Radiation fan - Google Patents
Radiation fan Download PDFInfo
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- CN105221484A CN105221484A CN201510604197.4A CN201510604197A CN105221484A CN 105221484 A CN105221484 A CN 105221484A CN 201510604197 A CN201510604197 A CN 201510604197A CN 105221484 A CN105221484 A CN 105221484A
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- Prior art keywords
- fan
- peripheral surface
- inner peripheral
- snail tongue
- spin axis
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Abstract
A kind of radiation fan, this radiation fan comprises rotary fan, spiral case and base plate, and described spiral case comprises snail tongue, it is characterized in that, in the face of the inner peripheral surface of the described snail tongue of described rotary fan is not vertical relative to described base plate.A kind of electronic computer, this electronic computer comprises radiation fan as above.
Description
Technical field
Present disclosure relates to radiation fan, particularly a kind of radiation fan with inclination spiral case.Present disclosure also relates to the electronic computer with this radiation fan.
Background technique
On computer product, the requirement of current terminal client to system noise is more and more higher.So just require under the prerequisite meeting performance, require to optimize fan performance.Client wishes that the system noise of notebook computer is more and more lower now simultaneously.The generation of centrifugal radiator fan noise mainly contains Rotation Noise and eddy current noise, and the unsteady flo w power produced between the flabellum of its fan and the snail tongue of fan and pressure pulsation can make flabellum produce Rotation Noise.Produce unsteady flo w power and the pressure pulsation of same phase before straight snail tongue and spiral case and flabellum simultaneously, the sound peak harmony paddy of sound wave between each blade is caused unanimously to superpose, relative to when flabellum is different from the gap between snail tongue and spiral case, the noise that unsteady flo w power and pressure pulsation produce can increase.
Summary of the invention
Based on above defect of the prior art, the present invention proposes a kind of new departure, thus solve above-mentioned defect.
Main thought according to technological scheme of the present invention comprises: the spiral case of fan is not vertical relative to the base plate of fan but tilts, and the housing of fan is not exclusively vertical with the spin axis of the flabellum of fan.In other words be exactly that the gap between the interior trace of the spiral case of fan and the flabellum of fan is change along the spin axis of fan.Based on this structure, the unsteady flo w power that flabellum and spiral case can be made to be formed and pressure pulsation axially phase place are different and the direction of air-flow and air-flow flow velocity is not quite identical, thus make the interlaced superposition of the sound peak harmony paddy of each blade sound wave reduce noise, and then improve sound quality.
According to a first aspect of the invention, propose a kind of radiation fan, this radiation fan comprises rotary fan, spiral case and base plate, and described spiral case comprises snail tongue, it is characterized in that, in the face of the inner peripheral surface of the described snail tongue of described rotary fan is not vertical relative to described base plate.
According to a second aspect of the invention, the gap between the inner peripheral surface of described spiral case and described rotary fan is change along the radial direction of this rotary fan.
The spin axis of described snail lingual margin line and this rotary fan is uneven.
The inner peripheral surface of described snail tongue leans forward relative to the spin axis of this rotary fan.
The inner peripheral surface of described snail tongue is hypsokinesis relative to the spin axis of this rotary fan.
The inner peripheral surface of described snail tongue is three-dimensional twisted relative to the spin axis of this rotary fan.
According to a second aspect of the invention, the implication leaned forward is: the inner peripheral surface of described snail tongue tilts towards the spin axis of this rotary fan.The implication of hypsokinesis is: the inner peripheral surface of described snail tongue tilts away from the spin axis of this rotary fan.Three-dimensional twisted implication is: a part for the inner peripheral surface of described snail tongue leans forward relative to the spin axis of this rotary fan, and the remaining part of the inner peripheral surface of described snail tongue is hypsokinesis relative to the spin axis of this rotary fan simultaneously.
According to a third aspect of the present invention, those skilled in the art it will also be appreciated that:
The inner peripheral surface of described snail tongue leans forward relative to the axis of the spin axis being parallel to this rotary fan; The inner peripheral surface of described snail tongue is hypsokinesis relative to the axis of the spin axis being parallel to this rotary fan; The inner peripheral surface of described snail tongue is three-dimensional twisted relative to the axis of the spin axis being parallel to this rotary fan.
According to a third aspect of the present invention, the implication leaned forward is: the inner peripheral surface of described snail tongue tilts towards the axis of the spin axis being parallel to this rotary fan.The implication of hypsokinesis is: the inner peripheral surface of described snail tongue tilts away from the axis of the spin axis being parallel to this rotary fan.Three-dimensional twisted implication is: a part for the inner peripheral surface of described snail tongue leans forward relative to the axis of the spin axis being parallel to this rotary fan, and the remaining part of the inner peripheral surface of described snail tongue is hypsokinesis relative to the axis of the spin axis being parallel to this rotary fan simultaneously.
Propose a kind of electronic computer according to a fourth aspect of the present invention, this electronic computer comprises radiation fan as above.
Based on above-mentioned structure of the present invention, the unsteady flo w power formed due to flabellum and spiral case and pressure pulsation axially phase place are different and the direction of air-flow and air-flow flow velocity is not quite identical, thus make the sound peak interlaced superposition of harmony paddy of each blade sound wave reduce the noise of fan and improve the sound quality of fan, improve customer experience.
So far, can be better understood in this detailed description in order to the present invention and can be realized better the contribution of prior art in order to the present invention, the disclosure outlines embodiments of the invention quite widely.Certainly, embodiments of the present invention will be described below and will form the theme of claims.
In this respect, before explaining embodiments of the invention in detail, should be appreciated that the present invention is not restricted in its application to propose in the following description or the details of structure illustrated in the accompanying drawings and the configuration of parts.The present invention can have except describe those except embodiment, and can to implement by different way and carry out.Moreover, should be appreciated that the wording that adopts at this and term and summary are the objects in order to describe, should not think determinate.
Similarly, those skilled in the art will recognize that present disclosure based on design easily can be used as other structure of design and the basis of system, for implementing several object of the present invention.Therefore, importantly, claims will be understood that and comprise such equivalent structure, as long as they do not exceed the spirit and scope of the invention.
Accompanying drawing explanation
All technical characteristicss of the present invention will be apparent based on accompanying drawing appended here.Accompanying drawing described herein is only in order to the purpose of illustration of selected embodiment, instead of all possible mode of execution and be intended to not limit scope of the present invention.
Fig. 1 illustrates plane figure based on the radiation fan of prior art and sectional drawing;
Fig. 2 illustrates plane figure according to radiation fan of the present invention and sectional drawing, and wherein the inner peripheral surface of spiral case leans forward relative to the spin axis of rotary fan;
Fig. 3 illustrates plane figure according to radiation fan of the present invention and sectional drawing, and wherein the inner peripheral surface of spiral case is hypsokinesis relative to the spin axis of rotary fan;
Fig. 4 illustrates plane figure according to radiation fan of the present invention and sectional drawing, and wherein the inner peripheral surface of spiral case is three-dimensional twisted relative to the spin axis of rotary fan.
Embodiment
Below with reference to accompanying drawing, exemplary embodiment according to the present invention is described in detail.By accompanying drawing and corresponding explanatory note, it will be understood to those of skill in the art that characteristics and advantages of the present invention.
Fig. 1 illustrates plane figure based on the radiation fan of prior art and sectional drawing.
Can find out based on Fig. 1, the spiral case of radiation fan of the prior art and snail tongue are all straight.The shortcoming of the program is: straight snail tongue and produce unsteady flo w power and the pressure pulsation of same phase between straight spiral case and flabellum, causes the sound peak harmony paddy of sound wave between each blade unanimously to superpose, the performance do not had on noise and in sound quality.
Fig. 2 illustrates plane figure according to radiation fan 1 of the present invention and sectional drawing.
Rotary fan 3, spiral case 2 and base plate 4 is comprised according to the radiation fan 1 of this embodiment of the present invention, described spiral case 2 comprises snail tongue 2-2, wherein in the face of the inner peripheral surface 2-2-1 of the described snail tongue 2 of described rotary fan 3 is not vertical relative to described base plate 4, wherein the inner peripheral surface of spiral case leans forward relative to the spin axis of rotary fan, and the angle leaned forward is approximately such as between 13 degree to 16 degree.
Radiation fan according to another embodiment of the present invention, the gap between the inner peripheral surface 2-1 of wherein said spiral case 2 and described rotary fan 3 is change along the radial direction of this rotary fan 3.
The spin axis B of described snail lingual margin line and this rotary fan 3 is uneven.
As shown in Figure 3, the inner peripheral surface 2-2-1 of described snail tongue 2-2 is hypsokinesis relative to the spin axis B of this rotary fan 3, and the angle of hypsokinesis is approximately such as between 13 degree to 16 degree.
As shown in Figure 4, the inner peripheral surface 2-2-1 of described snail tongue 2-2 is three-dimensional twisted relative to the spin axis B of this rotary fan 3.
According to the abovementioned embodiments of the present invention, the implication leaned forward is: the inner peripheral surface 2-2-1 of described snail tongue 2-2 tilts towards the spin axis B of this rotary fan 3.The implication of hypsokinesis is: the inner peripheral surface 2-2-1 of described snail tongue 2-2 tilts away from the spin axis B of this rotary fan 3.Three-dimensional twisted implication is: a part of the inner peripheral surface 2-2-1 of described snail tongue 2-2 leans forward relative to the spin axis B of this rotary fan 3, and the remaining part of the inner peripheral surface 2-2-1 of described snail tongue 2-2 is hypsokinesis relative to the spin axis B of this rotary fan 3 simultaneously.
According to still another embodiment of the invention, those skilled in the art it will also be appreciated that:
The inner peripheral surface 2-2-1 of described snail tongue 2-2 leans forward relative to the axis (not shown) of the spin axis B being parallel to this rotary fan 3; The inner peripheral surface 2-2-1 of described snail tongue 2-2 is hypsokinesis relative to the axis of the spin axis B being parallel to this rotary fan 3; The inner peripheral surface 2-2-1 of described snail tongue 2-2 is three-dimensional twisted relative to the axis of the spin axis B being parallel to this rotary fan 3, and the implication wherein leaned forward is: the inner peripheral surface 2-2-1 of described snail tongue 2-2 tilts towards the axis of the spin axis being parallel to this rotary fan.The implication of hypsokinesis is: the inner peripheral surface 2-2-1 of described snail tongue 2-2 tilts away from the axis of the spin axis B being parallel to this rotary fan 3.Three-dimensional twisted implication is: a part of the inner peripheral surface 2-2-1 of described snail tongue 2-2 leans forward relative to the axis of the spin axis B being parallel to this rotary fan 3, and the remaining part of the inner peripheral surface 2-2-1 of described snail tongue 2-2 is hypsokinesis relative to the axis of the spin axis B being parallel to this rotary fan 3 simultaneously.
Based on above-mentioned structure of the present invention, namely the spiral case of fan is not vertical relative to the base plate of fan but tilts, and the housing of fan is not exclusively vertical with the spin axis of the flabellum of fan.In other words be exactly that the gap between the interior trace of the spiral case of fan and the flabellum of fan is change along the spin axis of fan.The unsteady flo w power that flabellum and spiral case can be made to be formed based on this structure of the present invention and pressure pulsation axially phase place are different and the direction of air-flow and air-flow flow velocity is not quite identical, thus make the interlaced superposition of the sound peak harmony paddy of each blade sound wave reduce noise, and then raising sound quality, the air-flow peak value of pulse between rotary fan and snail tongue is namely made progressively to stagger, reduce the pulse at whole snail tongue place, adjustment air flow method and pressure gradient, reduce fan Rotation Noise, reduce system noise.
Experiment shows, when identical noise, according to structure elevator system flow 5%-10% of the present invention and when identical performance, noise level reduces 1-2dB (A).
Propose a kind of electronic computer according to still another embodiment of the invention, this electronic computer comprises radiation fan as above.
With reference to specific embodiment, although the present invention is illustrated in the specification and illustrated in the drawings, but should be appreciated that when not departing from the scope of the invention defined in claim, art personnel can make multiple change and the alternative wherein Various Components of multiple equivalent.And, the combination of the technical characteristics herein between specific embodiment, element and/or function and collocation are clear distinct, therefore according to the content disclosed in these, technical characteristics, element and/or function that art personnel can understand in embodiment can optionally be incorporated in another specific embodiment, unless foregoing has other description.In addition, according to instruction of the present invention, do not depart from the scope of essence of the present invention, adapt to special situation or material can make many changes.Therefore, the present invention is not limited to accompanying drawing institute graphic other specific embodiment, and the specific embodiment as the preferred forms at present contemplated by enforcement the present invention described in specification, and intention of the present invention comprises all mode of executions fallen in above-mentioned specification and appended right.
Claims (10)
1. a radiation fan, this radiation fan comprises rotary fan, spiral case and base plate, and described spiral case comprises snail tongue, it is characterized in that, in the face of the inner peripheral surface of the described snail tongue of described rotary fan is not vertical relative to described base plate.
2. radiation fan according to claim 1, is characterized in that, the gap between the inner peripheral surface of described spiral case and described rotary fan is change along the radial direction of this rotary fan.
3. radiation fan according to claim 1, is characterized in that, the spin axis of described snail lingual margin line and this rotary fan is uneven.
4. radiation fan according to claim 3, is characterized in that, the inner peripheral surface of described snail tongue leans forward relative to the spin axis of this rotary fan.
5. radiation fan according to claim 3, is characterized in that, the inner peripheral surface of described snail tongue is hypsokinesis relative to the spin axis of this rotary fan.
6. radiation fan according to claim 3, is characterized in that, the inner peripheral surface of described snail tongue is three-dimensional twisted relative to the spin axis of this rotary fan.
7. radiation fan according to claim 3, is characterized in that, the inner peripheral surface of described snail tongue leans forward relative to the axis of the spin axis being parallel to this rotary fan.
8. radiation fan according to claim 3, is characterized in that, the inner peripheral surface of described snail tongue is hypsokinesis relative to the axis of the spin axis being parallel to this rotary fan.
9. radiation fan according to claim 3, is characterized in that, the inner peripheral surface of described snail tongue is three-dimensional twisted relative to the axis of the spin axis being parallel to this rotary fan.
10. an electronic computer, this electronic computer comprises according to the radiation fan of claim 1 to 9 described in one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604197.4A CN105221484A (en) | 2015-09-21 | 2015-09-21 | Radiation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604197.4A CN105221484A (en) | 2015-09-21 | 2015-09-21 | Radiation fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221484A true CN105221484A (en) | 2016-01-06 |
Family
ID=54990667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510604197.4A Pending CN105221484A (en) | 2015-09-21 | 2015-09-21 | Radiation fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105221484A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19811877A1 (en) * | 1998-03-18 | 1999-09-23 | Motoren Ventilatoren Gmbh | Radial fan for heating the office or household |
| CN2359508Y (en) * | 1999-02-01 | 2000-01-19 | 顺德顺威电器有限公司 | Centrifugal fan casing |
| CN2491735Y (en) * | 2001-05-07 | 2002-05-15 | 宁波方太厨具有限公司 | Fan spiral casing structure of cooker hood |
| US20020131861A1 (en) * | 2001-03-16 | 2002-09-19 | Masaharu Sakai | Centrifugal blower having noise-reduction structure |
| CN1752460A (en) * | 2005-09-09 | 2006-03-29 | 宁波方太厨具有限公司 | Fan volute structure for fan of fume extractor |
| TW200615459A (en) * | 2004-11-05 | 2006-05-16 | Quanta Comp Inc | Centrifugal fan |
| CN101649845A (en) * | 2008-08-13 | 2010-02-17 | 富准精密工业(深圳)有限公司 | Centrifugal fan |
| CN204267376U (en) * | 2014-08-18 | 2015-04-15 | 无锡锡山特种风机有限公司 | A kind of low noise distortion snail tongue centrifugal blower |
-
2015
- 2015-09-21 CN CN201510604197.4A patent/CN105221484A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19811877A1 (en) * | 1998-03-18 | 1999-09-23 | Motoren Ventilatoren Gmbh | Radial fan for heating the office or household |
| CN2359508Y (en) * | 1999-02-01 | 2000-01-19 | 顺德顺威电器有限公司 | Centrifugal fan casing |
| US20020131861A1 (en) * | 2001-03-16 | 2002-09-19 | Masaharu Sakai | Centrifugal blower having noise-reduction structure |
| CN2491735Y (en) * | 2001-05-07 | 2002-05-15 | 宁波方太厨具有限公司 | Fan spiral casing structure of cooker hood |
| TW200615459A (en) * | 2004-11-05 | 2006-05-16 | Quanta Comp Inc | Centrifugal fan |
| CN1752460A (en) * | 2005-09-09 | 2006-03-29 | 宁波方太厨具有限公司 | Fan volute structure for fan of fume extractor |
| CN101649845A (en) * | 2008-08-13 | 2010-02-17 | 富准精密工业(深圳)有限公司 | Centrifugal fan |
| CN204267376U (en) * | 2014-08-18 | 2015-04-15 | 无锡锡山特种风机有限公司 | A kind of low noise distortion snail tongue centrifugal blower |
Non-Patent Citations (2)
| Title |
|---|
| 姜培正: "《流体机械》", 30 November 1991, 化学工业出版社 * |
| 魏新利，付卫东，张军: "《泵与风机节能技术》", 31 January 2011, 化学工业出版社 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160106 |
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| RJ01 | Rejection of invention patent application after publication |