CN107676304A - A kind of volute of blower with bionical asymmetric incline tongue structure - Google Patents
A kind of volute of blower with bionical asymmetric incline tongue structure Download PDFInfo
- Publication number
- CN107676304A CN107676304A CN201710899188.1A CN201710899188A CN107676304A CN 107676304 A CN107676304 A CN 107676304A CN 201710899188 A CN201710899188 A CN 201710899188A CN 107676304 A CN107676304 A CN 107676304A
- Authority
- CN
- China
- Prior art keywords
- bionical
- asymmetric
- incline
- inclined portion
- motor side
- 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
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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- 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
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses a kind of volute of blower with bionical asymmetric incline tongue structure, including foreboard, back plate and side plate, bionical asymmetric incline tongue is provided with the side plate air outlet, the molded line of the bionical asymmetric incline tongue is bionical aerofoil profile molded line, the bionical asymmetric incline tongue includes motor side inclined portion and non-motor side inclined portion, and the gradient and width of the motor side inclined portion and the non-motor side inclined portion differ.The snail tongue of Asio otus aerofoil profile is imitated in volute of blower of the invention with bionical asymmetric incline tongue structure with good noise reduction performance, asymmetric incline tongue structure matches with double-suction type multi-wing centrifugal fan impeller, snail tongue face with incline structure can weaken the unsteady active force of out of phase caused by the effect that is overlapped mutually of noise, the noise of multi-wing centrifugal fan is effectively reduced under conditions of impeller and rotating speed is not changed, while can also increase certain air quantity.
Description
Technical field
The present invention relates to blower fan technical field, more particularly to a kind of blower fan with bionical asymmetric incline tongue structure
Spiral case.
Background technology
Range hood is the common device of household kitchen, and its noise size is one of important indicator for influenceing Consumer's Experience.
The noise of range hood is mainly produced by the workpiece multi-wing centrifugal fan of inside, is dropped while air quantity and blast is not influenceed
The noise of low multi-wing centrifugal fan is the main focus studied at present.Core component of the snail tongue as multi-wing centrifugal fan, its property
The quality of energy directly affects the noise reduction of whole multi-wing centrifugal fan.
Traditional multi-wing centrifugal fan snail tongue, which designs, make it that impeller outlet air-flow is stronger to snail tongue impulse ratio, for its drop
Make an uproar demand, current multi-wing centrifugal fan snail tongue uses incline tongue more.Because its incline structure can make from wheel disc side to wheel cap side
Unsteady interaction produces certain phase difference, the effect for being overlapped mutually noise caused by the unsteady active force of out of phase
Fruit is less than plane snail tongue, and then noise reduction purpose.
But for double-suction type multi-wing centrifugal fan, when especially impeller central disc is anisopleual, the inclination snail of single structure
Effect caused by tongue and unobvious, meanwhile, simple arc snail tongue can not effectively reach the effect of noise reduction.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of volute of blower with bionical asymmetric incline tongue structure
The problem of prior art is present, enable double-suction type multi-wing centrifugal fan that there is good noise reduction.
To achieve the above object, the invention provides following scheme：The present invention, which provides one kind, has bionical asymmetric inclination
The volute of blower of snail tongue structure, including foreboard, back plate and side plate, bionical asymmetric inclination snail is provided with the side plate air outlet
Tongue, the molded line of the bionical asymmetric incline tongue is bionical aerofoil profile molded line, and the bionical asymmetric incline tongue includes motor
Skew back portion and non-motor side inclined portion, the gradient and width of the motor side inclined portion and the non-motor side inclined portion differ.
Preferably, the molded line of the bionical asymmetric incline tongue is aerofoil profile molded line at the imitative section of the Asio otus wing 40%.
Preferably, the skew back face of the motor side inclined portion and the skew back face of the non-motor side inclined portion are by the imitative screech owl
Aerofoil profile molded line continuously accumulates composition along oblique line at the section of the Owl wings 40%.
Preferably, the intersection of the motor side inclined portion and the non-motor side inclined portion is corresponding with impeller central disc.
Preferably, the thickness of the bionical asymmetric incline tongue to both sides from gradually increasing at mid-game.
Preferably, the width of the non-motor side inclined portion is more than the width of the motor side inclined portion.
Preferably, the gradient of the non-motor side inclined portion is more than the gradient of the motor side inclined portion.
Preferably, the bionical asymmetric incline tongue is integrally formed.
Preferably, the bionical asymmetric incline tongue is detachable with the side plate, the foreboard and the back plate respectively
Connection.
Preferably, the bionical asymmetric incline tongue passes through spiral shell with the side plate, the foreboard and the back plate respectively
Adjusting screw connects.
The volute of blower that the present invention has bionical asymmetric incline tongue structure achieves following skill compared with prior art
Art effect：
The snail tongue of Asio otus aerofoil profile is imitated in volute of blower of the invention with bionical asymmetric incline tongue structure with good
Good noise reduction performance, the skew back face of the motor side inclined portion reconstructed using aerofoil profile molded line at the imitative section of the Owl wings 40% and non-motor side are oblique
The snail tongue face that the skew back face in portion is formed can effectively alleviate impact of the air-flow to snail tongue, reduce the flowing point of gas near snail tongue face
From；Asymmetric incline tongue structure matches with double-suction type multi-wing centrifugal fan impeller, and the snail tongue face with incline structure can be with
The effect that noise caused by weakening the unsteady active force of out of phase is overlapped mutually, under conditions of impeller and rotating speed is not changed
The noise of multi-wing centrifugal fan is effectively reduced, while can also increase certain air quantity；In addition, bionical asymmetric incline tongue is
Detachable snail tongue, it is easily installed, dismantles and repairs.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the structural representation for the volute of blower that the present invention has bionical asymmetric incline tongue structure；
Fig. 2 is bionical asymmetric incline tongue one in volute of blower of the present invention with bionical asymmetric incline tongue structure
The structural representation at kind visual angle；
Fig. 3 is that bionical asymmetric incline tongue is another in volute of blower of the present invention with bionical asymmetric incline tongue structure
A kind of structural representation at visual angle；
Fig. 4 is bionical asymmetric incline tongue in volute of blower of the present invention with bionical asymmetric incline tongue structure
Molded line structure schematic diagram at motor side inclined portion；
Fig. 5 is bionical asymmetric incline tongue in volute of blower of the present invention with bionical asymmetric incline tongue structure
Molded line structure schematic diagram at non-motor side inclined portion；
Wherein, 1- foreboards, 2- back plates, 3- side plates, the bionical asymmetric incline tongues of 4-, 5- motor side inclined portions, the non-motors of 6-
Skew back portion, 7- imitate aerofoil profile molded line at the section of the Asio otus wing 40%.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is existing to solve it is an object of the invention to provide a kind of volute of blower with bionical asymmetric incline tongue structure
The problem of technology is present, enable double-suction type multi-wing centrifugal fan that there is good noise reduction.
The present invention provides a kind of volute of blower with bionical asymmetric incline tongue structure, including foreboard, back plate and side
Plate, bionical asymmetric incline tongue is provided with the side plate air outlet, the molded line of the bionical asymmetric incline tongue is imitative
Raw aerofoil profile molded line, the bionical asymmetric incline tongue include motor side inclined portion and non-motor side inclined portion, the motor side inclined portion
Differed with the gradient and width of the non-motor side inclined portion.
The snail tongue of Asio otus aerofoil profile is imitated in volute of blower of the invention with bionical asymmetric incline tongue structure with good
Good noise reduction performance, asymmetric incline tongue structure match with double-suction type multi-wing centrifugal fan impeller, have incline structure
Snail tongue face can weaken the unsteady active force of out of phase caused by the effect that is overlapped mutually of noise, do not changing impeller and turning
The noise of multi-wing centrifugal fan is effectively reduced under conditions of speed, while can also increase certain air quantity.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
As shown in figure 1, the volute of blower that the present embodiment has the bionical structure of asymmetric incline tongue 4 includes foreboard 1, back plate
2 and side plate 3, bionical asymmetric incline tongue 4 is provided with the top outlet inlet of side plate 3.
Understand that bionical asymmetric incline tongue 4 includes motor side inclined portion 5 and non-motor side inclined portion 6, motor side with reference to Fig. 1-3
The intersection of inclined portion 5 and non-motor side inclined portion 6 is corresponding with impeller central disc, and the width of non-motor side inclined portion 6 in the present embodiment
More than the width of motor side inclined portion 5, the gradient of the gradient of non-motor side inclined portion 6 also greater than motor side inclined portion 5.
And the thickness of bionical asymmetric incline tongue 4 is to both sides from gradually increasing at mid-game, i.e. motor side inclined portion 5 and non-electrical
The thickness of the snail tongue of the intersection of pusher side inclined portion 6 is minimum, and motor side inclined portion 5 and non-motor side inclined portion 6 are thick to direction away from each other
Degree gradually increase.
The molded line of reference picture 4 and Fig. 5, motor side inclined portion 5 and non-motor side inclined portion 6 is bionical aerofoil profile molded line, i.e., bionical
The molded line of asymmetric incline tongue 4 is bionical aerofoil profile molded line, and the molded line of asymmetric incline tongue 4 bionical in the present embodiment uses
Aerofoil profile molded line 7 at the imitative section of the Asio otus wing 40%.
The skew back face inside and outside skew back face and non-motor side inclined portion 6 inside and outside motor side inclined portion 5 can be with
It is interpreted as continuously being accumulated along an oblique line by aerofoil profile molded line 7 at the imitative section of the Asio otus wing 40% and forms, certain He of motor side inclined portion 5
Above-mentioned oblique line used in non-motor side inclined portion 6 is different.
The present embodiment is using the skew back face of the motor side inclined portion 5 of aerofoil profile molded line reconstruct and non-motor at the imitative section of the Owl wings 40%
The snail tongue face that the skew back face in skew back portion 6 is formed can effectively alleviate air-flow and be impacted to caused by snail tongue, reduce snail tongue face gas nearby
The flow separation of body；Asymmetric incline tongue structure matches with double-suction type multi-wing centrifugal fan impeller, has incline structure
Snail tongue face can weaken the unsteady active force of out of phase caused by the effect that is overlapped mutually of noise, do not changing impeller and turning
The noise of multi-wing centrifugal fan is effectively reduced under conditions of speed, while certain air quantity can also be increased.Solves prior art
The technical barrier of middle double-suction type multi-wing centrifugal fan noise reduction unobvious (when especially impeller central disc is anisopleual).
It is worth noting that, though bionical asymmetric incline tongue 4 is divided into motor side inclined portion 5 and non-motor side in the present embodiment
The two parts of inclined portion 6, but make it is appropriate to the occasion be integrally formed it is prefabricated form, so not only make that simple, production efficiency is high, and can protect
Demonstrate,proving bionical asymmetric incline tongue 4 has sufficiently high structural stability.
In addition, asymmetric incline tongue 4 bionical in the present embodiment passes through screw with side plate 3, foreboard 1 and back plate 2 respectively
Nail is detachably connected, and to ensure that the sealing between bionical asymmetric incline tongue 4 and side plate 3, foreboard 1 and back plate 2 is good certainly
It is good.Bionical asymmetric incline tongue 4 is detachably installed, follow-up dismounting, maintenance can be facilitated.
In the description of the invention, it is necessary to explanation, the side of the instruction such as term " top ", " side ", " oblique ", " interior ", " outer "
Position or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of the description present invention and simplify description,
Rather than instruction or imply signified device or element must have and deposit specific orientation, with specific azimuth configuration and operation, because
This is not considered as limiting the invention.
Specific case used herein is set forth to the principle and embodiment of the present invention, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, the there will be changes in your specific embodiment and application.In summary, this specification content
It should not be construed as limiting the invention.
Claims (10)
- A kind of 1. volute of blower with bionical asymmetric incline tongue structure, it is characterised in that：Including foreboard, back plate and side Plate, bionical asymmetric incline tongue is provided with the side plate air outlet, the molded line of the bionical asymmetric incline tongue is imitative Raw aerofoil profile molded line, the bionical asymmetric incline tongue include motor side inclined portion and non-motor side inclined portion, the motor side inclined portion Differed with the gradient and width of the non-motor side inclined portion.
- 2. the volute of blower according to claim 1 with bionical asymmetric incline tongue structure, it is characterised in that：It is described The molded line of bionical asymmetric incline tongue is aerofoil profile molded line at the imitative section of the Asio otus wing 40%.
- 3. the volute of blower according to claim 2 with bionical asymmetric incline tongue structure, it is characterised in that：It is described The skew back face of motor side inclined portion and the skew back face of the non-motor side inclined portion are by aerofoil profile at the imitative section of the Asio otus wing 40% Molded line continuously accumulates composition along oblique line.
- 4. the volute of blower according to claim 3 with bionical asymmetric incline tongue structure, it is characterised in that：It is described The intersection of motor side inclined portion and the non-motor side inclined portion is corresponding with impeller central disc.
- 5. the volute of blower according to claim 4 with bionical asymmetric incline tongue structure, it is characterised in that：It is described The thickness of bionical asymmetric incline tongue to both sides from gradually increasing at mid-game.
- 6. the volute of blower according to claim 5 with bionical asymmetric incline tongue structure, it is characterised in that：It is described The width of non-motor side inclined portion is more than the width of the motor side inclined portion.
- 7. the volute of blower according to claim 6 with bionical asymmetric incline tongue structure, it is characterised in that：It is described The gradient of non-motor side inclined portion is more than the gradient of the motor side inclined portion.
- 8. the volute of blower according to claim 7 with bionical asymmetric incline tongue structure, it is characterised in that：It is described Bionical asymmetric incline tongue is integrally formed.
- 9. the volute of blower with bionical asymmetric incline tongue structure according to claim 1-8 any one, it is special Sign is：The bionical asymmetric incline tongue is detachably connected with the side plate, the foreboard and the back plate respectively.
- 10. the volute of blower according to claim 9 with bionical asymmetric incline tongue structure, it is characterised in that：Institute Bionical asymmetric incline tongue is stated to be connected by screw with the side plate, the foreboard and the back plate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710899188.1A CN107676304A (en) | 2017-09-28 | 2017-09-28 | A kind of volute of blower with bionical asymmetric incline tongue structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710899188.1A CN107676304A (en) | 2017-09-28 | 2017-09-28 | A kind of volute of blower with bionical asymmetric incline tongue structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107676304A true CN107676304A (en) | 2018-02-09 |
Family
ID=61139122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710899188.1A Pending CN107676304A (en) | 2017-09-28 | 2017-09-28 | A kind of volute of blower with bionical asymmetric incline tongue structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676304A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864010A (en) * | 2019-12-10 | 2020-03-06 | 珠海格力电器股份有限公司 | Novel volute tongue structure, fan volute and fan |
| US11506222B2 (en) | 2018-09-25 | 2022-11-22 | Carrier Corporation | Fan housing, fan and operating system having a fan |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6200093B1 (en) * | 1998-12-02 | 2001-03-13 | Lg Electronics, Inc. | Sirocco fan |
| JP2007146817A (en) * | 2005-11-30 | 2007-06-14 | Daikin Ind Ltd | Multiblade centrifugal blower |
| CN202280660U (en) * | 2011-09-15 | 2012-06-20 | 美的集团有限公司 | Centrifugal fan volute of range hood |
| CN104196761A (en) * | 2014-08-22 | 2014-12-10 | 广东海信家电有限公司 | Double-air-inlet centrifugal fan |
-
2017
- 2017-09-28 CN CN201710899188.1A patent/CN107676304A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6200093B1 (en) * | 1998-12-02 | 2001-03-13 | Lg Electronics, Inc. | Sirocco fan |
| JP2007146817A (en) * | 2005-11-30 | 2007-06-14 | Daikin Ind Ltd | Multiblade centrifugal blower |
| CN202280660U (en) * | 2011-09-15 | 2012-06-20 | 美的集团有限公司 | Centrifugal fan volute of range hood |
| CN104196761A (en) * | 2014-08-22 | 2014-12-10 | 广东海信家电有限公司 | Double-air-inlet centrifugal fan |
Non-Patent Citations (2)
| Title |
|---|
| 刘小民 李烁: "仿鸮翼前缘蜗舌对多翼离心风机气动性能和噪声的影响", 《西安交通大学学报》 * |
| 张晴: "《热点专利技术分析与运用（第1辑）》", 31 October 2015 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11506222B2 (en) | 2018-09-25 | 2022-11-22 | Carrier Corporation | Fan housing, fan and operating system having a fan |
| CN110864010A (en) * | 2019-12-10 | 2020-03-06 | 珠海格力电器股份有限公司 | Novel volute tongue structure, fan volute and fan |
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Application publication date: 20180209 |
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