CN104329290B - Centrifugal fan and air conditioner with same - Google Patents
Centrifugal fan and air conditioner with same Download PDFInfo
- Publication number
- CN104329290B CN104329290B CN201410597387.3A CN201410597387A CN104329290B CN 104329290 B CN104329290 B CN 104329290B CN 201410597387 A CN201410597387 A CN 201410597387A CN 104329290 B CN104329290 B CN 104329290B
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- blade
- air
- centrifugal blower
- blade sections
- sections
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- 238000000926 separation method Methods 0.000 abstract description 5
- 238000005119 centrifugation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a centrifugal fan and an air conditioner with the same. This centrifugal fan includes: an impeller chassis; the blade comprises an air replenishing channel which makes air flow from the windward side of the blade to the leeward side of the blade so as to replenish air to the negative pressure area of the blade. By applying the technical scheme of the invention, the airflow is centrifugally blown out along the windward side of the blade, and the airflow on the pressure side of the windward side is supplemented to the negative pressure area of the suction side of the leeward side to generate an airflow separation area, so that the negative pressure on the leeward side is reduced or eliminated, and then the airflow vortex generated by airflow separation is eliminated, thereby reducing the noise generated by the centrifugal fan.
Description
Technical field
The present invention relates to air-conditioner production field, in particular to a kind of centrifugal blower and with the centrifugal blower
Air-conditioner.
Background technology
Centrifugal blower is the core component of the conventional heat exchange blower fan system of numerous products, and which is widely used in industrial life
In the every profession and trade of product, particularly with field of air conditioning product, centrifugal blower is one of important core component of heat exchange blower fan system.
But in field of air conditioning, the requirement of its design objective is not only that the requirement to drafting efficiency is very high, and noise is experienced
Requirement also very high.
In the course of work of the centrifugal blower of prior art, as depicted in figs. 1 and 2, impeller chassis 1 rotates, air-flow from
The center air intake of impeller, then along blade 2, to surrounding blowout, (in figure, block arrow represents the direction of rotation on impeller chassis 1, little
Arrow represents air current flow path), the air-flow of the suction surface A of the blade pressure face B of blade (corresponding with suction surface A be) is separated
Air-flow vortex can be produced, so as to produce aerodynamic noise, especially for the fan blade pole at high speed of the big chord length of centrifugal blower
Easily there is flow separation phenomenon (there is separation area C) in suction surface A ends, cause then gas flowing out stream uneven, from
The drafting efficiency of heart-wind syndrome machine is low, the aerodynamic noise of centrifugal blower deteriorates.
Content of the invention
Present invention is primarily targeted at a kind of centrifugal blower and the air-conditioner with the centrifugal blower are provided, existing to solve
The suction surface A air-flows separation for having the blade of centrifugal blower in technology causes the problem that centrifugal blower aerodynamic noise deteriorates.
To achieve these goals, according to an aspect of the invention, there is provided a kind of centrifugal blower, including：Impeller bottom
Disk；Blade, blade include making air-flow carry out QI invigorating from the lee face that the windward side of blade flows to blade with the negative pressuren zone to blade
Air supply passage.
Further, blade includes the first blade sections and the second blade sections, and air supply passage is gap therebetween.
Further, the circumference of axis hole of the blade on impeller chassis is arranged, and blade is fixedly installed on impeller chassis
On, direction of first blade sections with the second blade sections along the center of circle away from axis hole on impeller chassis extends and is arranged in order；Its
In, on the direction of rotation on impeller chassis, one end away from axis of the first blade sections and the close axis of the second blade sections
One end is staggered setting, and the first blade sections are at the second blade sections rear.
Further, the first blade sections are evenly distributed in the circumferential direction on impeller chassis, in the rotation side on impeller chassis
Upwards, one end of the close axis of each second blade sections is inclined forward relative to one end away from axis of corresponding first blade sections
Turn predetermined angular.
Further, predetermined angular is α, wherein, 5 °≤α≤25 °.
Further, the first blade sections are evenly distributed in the circumferential direction on impeller chassis, in the rotation side on impeller chassis
Upwards, one end of the close axis of each second blade sections is inclined forward relative to one end away from axis of corresponding first blade sections
Turn a deflection angle, wherein, the deflection angle of second adjacent blade section is unequal.
Further, deflection angle is β, β=β0+ λ sin (k θ), wherein, λ for modulation angle and be constant, β0On the basis of partially
Angle, sequence numbers of the k for combination type vane, θ is the angle between one end of the close axis of the first adjacent blade sections.
Further, 0.5 °≤λ≤5 °.
According to a further aspect in the invention, there is provided a kind of air-conditioner, including centrifugal blower, centrifugal blower includes aforesaid
Centrifugal blower.
Further, air-conditioner also includes that there is installing space, air outlet, air outlet to connect installing space for spiral case, spiral case,
In installing space, the end of blade has gap with the inwall of spiral case to centrifugal blower.
Application technical scheme, air-flow are blown out centrifugal along the windward side of blade, by by windward side (pressure
Power face) air-flow add to the negative pressuren zone (produce air-flow detached region) of lee face (suction surface), so as to the back of the body is reduced or eliminated
Negative pressure at wind face, eliminates then air-flow and separates the air-flow spiral for producing, to reduce the noise of centrifugal blower generation.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the structural representation under prior art centrifugal blower working condition；
Fig. 2 shows the sectional view of Fig. 1；
Fig. 3 shows the structural representation of the embodiment of the centrifugal blower of the present invention；
Fig. 4 shows that the second blade sections of the first embodiment of the centrifugal blower of the present invention are equal with respect to the first blade deflection
The design diagram of angle；
Fig. 5 shows that the second blade sections of the second embodiment of the centrifugal blower of the present invention are different with respect to the first blade deflection
The design diagram of angle；And
Fig. 6 shows the structural representation of the embodiment of the air-conditioner of the present invention.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling：
10th, impeller chassis；20th, blade；
21st, the first blade sections；22nd, the second blade sections；
100th, centrifugal blower；200th, spiral case；
201st, installing space；202nd, air outlet；
203rd, vortex tongue.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
As shown in Fig. 3 to 6, embodiments in accordance with the present invention, there is provided a kind of centrifugal blower, the centrifugal blower include impeller
Chassis 10 and blade 20.Blade 20 includes making air-flow flow to the lee face of blade 20 with to blade 20 from the windward side of blade 20
Negative pressuren zone carries out the air supply passage of QI invigorating.
Application technical scheme, air-flow are blown out centrifugal along the windward side of blade, by by windward side (pressure
Power face) air-flow add to the negative pressuren zone (produce air-flow detached region) of lee face (suction surface), so as to the back of the body is reduced or eliminated
Negative pressure at wind face, eliminates then air-flow and separates the air-flow spiral for producing, to reduce the noise of centrifugal blower generation.
Preferably, as shown in figure 3, blade 20 includes the first blade sections 21 and the second blade sections 22, air supply passage is the two
Between gap.
Specifically, the circumference of axis hole of the blade 20 on impeller chassis 10 is arranged, and blade 20 is fixedly installed on impeller
On chassis 10, the first blade sections 21 and the second blade sections 22 extend simultaneously along the direction in the center of circle away from axis hole on impeller chassis 10
It is arranged in order；Wherein, on the direction of rotation on impeller chassis 10, one end away from axis of the first blade sections 21 and the second blade
One end of the close axis of section 22 is staggered setting, and the first blade sections 21 are at 22 rear of the second blade sections.So, when air-flow is along first
When the windward side of blade sections is blown over, due to there is gap, and air-flow between the second blade sections 22 and the first blade sections 21
Gap can be passed through and be supplemented to the negative pressuren zone of blade 20, so as to eliminate the air-flow spiral that negative pressure is caused, realize abatement centrifugation wind
The purpose of the noise of machine.
In conjunction with referring to as shown in figure 4, according to the first embodiment of the present invention, the first blade sections 21 along the circumferential direction uniform cloth
Put on impeller chassis 10, on the direction of rotation on impeller chassis 10, one end of the close axis of each second blade sections 22 is relative
Predetermined angular is deflected forward in one end away from axis of corresponding first blade sections 21.And predetermined angular is α, wherein, 5 °
≤α≤25°.The setting structure of first blade sections 21 and the second blade sections 22 of centrifugal blower can so be simplified so that production
Technique simplifies, so as to reduce the difficulty of processing between centrifugal blower fan blade wheel chassis 10 and blade 20.
In conjunction with referring to as shown in figure 5, according to the second embodiment of the present invention, the first blade sections 21 along the circumferential direction uniform cloth
Put on impeller chassis 10, on the direction of rotation on impeller chassis 10, one end of the close axis of each second blade sections 22 is relative
A deflection angle, wherein, second adjacent blade section are deflected forward in one end away from axis of corresponding first blade sections 21
22 deflection angle is unequal.Further, deflection angle is β, β=β0+ λ sin (k θ), wherein, λ for modulation angle and is normal
Number, and 0.5 °≤λ≤5 °, β0On the basis of the 5 °≤β in drift angle0≤ 25 °, sequence numbers of the k for combination type vane 20, θ is adjacent first
Angle between one end of the close axis of blade sections 21.
In conjunction with referring to as shown in fig. 6, drive blade 20 to rotate when the impeller chassis 10 of centrifugal blower rotates, so as to realize
The purpose of centrifugation air-out.When blade 20 is rotated to vortex tongue 203, the air-flow that blade 20 is derived can be caused to vortex tongue 203
Impact, swashs frequency noise so as to produce at vortex tongue 203.In order to reduce, or even sharp frequency noise is eliminated, will be relative for the second blade sections 22
In the first blade sections 21 deflection angle according to formula β=β0+ λ sin (k θ) are chosen so that the second blade sections 22 and first
Gap length between blade sections 21 is different, and so, the air-flow that blade 20 is derived is impacted in each blade to the sharp frequency of vortex tongue 203
20 at vortex tongue 203 when all different so that the sharp frequency impact that vortex tongue 203 is subject to obtain different alleviate, so as to drop
Low sharp frequency noise.
According to another aspect of the present invention, there is provided air-conditioner, the air-conditioner includes centrifugal blower 100, the centrifugation wind
Machine 100 includes aforesaid centrifugal blower.
Preferably, air-conditioner also includes that spiral case 200, spiral case 200 have installing space 201, air outlet 202, air outlet 202
Connection installing space 201, in installing space 201, the end of blade 20 is had centrifugal blower 100 with the inwall of spiral case 200
There is gap.The wind of the blowout of centrifugal blower 100 is blown out through 200 water conservancy diversion of spiral case, and air-flow is finally from 202 source air-conditioner of air outlet.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect：
Application technical scheme, air-flow are blown out centrifugal along the windward side of blade, by will face pressure windward
The air-flow in power face adds to the negative pressuren zone of lee face suction surface and produces the detached region of air-flow, so as to be reduced or eliminated at lee face
Negative pressure, then eliminate air-flow separate produce air-flow spiral, with reduce centrifugal blower generation noise.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of centrifugal blower, it is characterised in that include：
Impeller chassis (10)；
Blade (20), described blade (20) include the back of the body for making air-flow flow to the blade (20) from the windward side of the blade (20)
Wind face carries out the air supply passage of QI invigorating with the negative pressuren zone to the blade (20), and described blade (20) include the first blade sections (21)
With the second blade sections (22), the air supply passage is gap therebetween, and blade (20) are around impeller chassis (10)
On axis hole circumference arrange, blade (20) are fixedly installed on impeller chassis (10), first blade
Section (21) is extended in the direction in described impeller chassis (10) upper center of circle along away from the axis hole with the second blade sections (22)
And be arranged in order；
Wherein, on the direction of rotation of impeller chassis (10), the first blade sections (21) away from the one of the axis
Hold and stagger setting with one end of the close described axis of the second blade sections (22), the first blade sections (21) are described the
Two blade sections (22) rear, the first blade sections (21) are evenly distributed in the circumferential direction on impeller chassis (10),
On the direction of rotation of impeller chassis (10), one end of the close described axis of each second blade sections (22) is relative to right
The one end away from the axis of the first blade sections (21) answered deflects forward a deflection angle, wherein, adjacent described
The deflection angle of the second blade sections (22) is unequal.
2. centrifugal blower according to claim 1, it is characterised in that the deflection angle is β, β=β0+ λ sin (k θ), its
In, λ for modulation angle and be constant, β0On the basis of drift angle, k for the blade (20) sequence number, θ is adjacent first blade
Angle between one end of the close described axis of section (21).
3. centrifugal blower according to claim 2, it is characterised in that 0.5 °≤λ≤5 °.
4. a kind of air-conditioner, including centrifugal blower (100), it is characterised in that described centrifugal blower (100) include claim 1
To the centrifugal blower any one of 3.
5. air-conditioner according to claim 4, it is characterised in that the air-conditioner also includes spiral case (200), the spiral case
(200) there is installing space (201), air outlet (202), described air outlet (202) connect installing space (201), described
, in the installing space (201), the end of blade (20) is interior with the spiral case (200) for centrifugal blower (100)
Wall has gap.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597387.3A CN104329290B (en) | 2014-10-29 | 2014-10-29 | Centrifugal fan and air conditioner with same |
| PCT/CN2015/093127 WO2016066112A1 (en) | 2014-10-29 | 2015-10-28 | Centrifugal fan and air conditioner having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597387.3A CN104329290B (en) | 2014-10-29 | 2014-10-29 | Centrifugal fan and air conditioner with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329290A CN104329290A (en) | 2015-02-04 |
| CN104329290B true CN104329290B (en) | 2017-03-15 |
Family
ID=52404076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410597387.3A Active CN104329290B (en) | 2014-10-29 | 2014-10-29 | Centrifugal fan and air conditioner with same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104329290B (en) |
| WO (1) | WO2016066112A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329290B (en) * | 2014-10-29 | 2017-03-15 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner with same |
| CN106194827A (en) * | 2016-07-11 | 2016-12-07 | 沈阳航空航天大学 | Improve the birotor blade wheel structure of cross flow fan total pressure efficiency |
| CN107061357B (en) * | 2017-01-20 | 2019-10-18 | 美的集团股份有限公司 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
| CN107725475A (en) * | 2017-10-25 | 2018-02-23 | 上海理工大学 | Leading edge slat formula centrifugal impeller and design method |
| CN108240352A (en) * | 2017-12-18 | 2018-07-03 | 江苏大学 | A kind of centrifugal pump impeller with low-pressure pulse characteristic |
| CN108465560A (en) * | 2018-03-21 | 2018-08-31 | 深圳市思迈达电子有限公司 | A kind of centrifugal mechanism |
| JP7234041B2 (en) * | 2019-05-31 | 2023-03-07 | 三菱重工業株式会社 | impeller and centrifugal pump |
| CN110486324A (en) * | 2019-09-19 | 2019-11-22 | 宁波奥克斯电气股份有限公司 | A kind of tangential impeller and air conditioner |
| CN112824684A (en) * | 2019-11-20 | 2021-05-21 | 兰州理工大学 | Centrifugal pump impeller and noise reduction method thereof |
| CN111043072B (en) * | 2019-11-26 | 2022-03-08 | 奇鋐科技股份有限公司 | Disc type fan wheel structure |
| CN110886723A (en) * | 2019-12-17 | 2020-03-17 | 中国计量大学上虞高等研究院有限公司 | Multi-section high-efficiency centrifugal impeller |
| US11365750B2 (en) | 2019-12-27 | 2022-06-21 | Asia Vital Components Co., Ltd. | Tray-type fan impeller structure |
| CN111237251A (en) * | 2020-01-10 | 2020-06-05 | 珠海格力电器股份有限公司 | Wind wheel structure and range hood |
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|---|---|---|---|---|
| JPS6128796A (en) * | 1984-07-19 | 1986-02-08 | Nippon Kikai Gijutsu Kk | Impeller for blower |
| US6139273A (en) * | 1998-04-22 | 2000-10-31 | Valeo Climate Control, Inc. | Radial flow fan |
| CN2484426Y (en) * | 2001-07-04 | 2002-04-03 | 顺德顺威电器有限公司 | Series centrifugal impeller |
| JP2004060447A (en) * | 2002-07-24 | 2004-02-26 | Sanden Corp | Multiblade blower |
| CN2711425Y (en) * | 2003-10-22 | 2005-07-20 | 彭泽阳 | High-efficient low-noise centrifugal blower fan |
| CN1624336A (en) * | 2003-11-28 | 2005-06-08 | 三电有限公司 | Centrifugal multi-blade fan |
| CN101135318A (en) * | 2006-08-31 | 2008-03-05 | 财团法人工业技术研究院 | Impeller structure and centrifugal fan device using same |
| CN101576091A (en) * | 2009-06-08 | 2009-11-11 | 西安交通大学 | 1/2 type tandem-blade type transonic speed centrifugal impeller |
| CN101586581A (en) * | 2009-06-19 | 2009-11-25 | 西安交通大学 | 1/2-type tandem-blade diffuser |
| JP2012117387A (en) * | 2010-11-29 | 2012-06-21 | Mitsubishi Electric Corp | Air blower and air conditioner equipped with the air blower |
| CN102734213A (en) * | 2012-06-21 | 2012-10-17 | 广东志高空调有限公司 | Centrifugal fan impeller structure for ceiling mounted air conditioner |
| CN203627319U (en) * | 2013-12-20 | 2014-06-04 | 珠海格力电器股份有限公司 | Centrifugal volute, centrifugal fan with centrifugal volute and air conditioner |
| CN104329290B (en) * | 2014-10-29 | 2017-03-15 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner with same |
| CN204200679U (en) * | 2014-10-29 | 2015-03-11 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner with same |
-
2014
- 2014-10-29 CN CN201410597387.3A patent/CN104329290B/en active Active
-
2015
- 2015-10-28 WO PCT/CN2015/093127 patent/WO2016066112A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN104329290A (en) | 2015-02-04 |
| WO2016066112A1 (en) | 2016-05-06 |
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