CN104329290A - Centrifugal fan and air conditioner with centrifugal fan - Google Patents
Centrifugal fan and air conditioner with centrifugal fan Download PDFInfo
- Publication number
- CN104329290A CN104329290A CN201410597387.3A CN201410597387A CN104329290A CN 104329290 A CN104329290 A CN 104329290A CN 201410597387 A CN201410597387 A CN 201410597387A CN 104329290 A CN104329290 A CN 104329290A
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- CN
- China
- Prior art keywords
- blade
- centrifugal blower
- blade sections
- impeller chassis
- sections
- 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.)
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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
- F04D29/281—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
-
- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
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 centrifugal fan. The centrifugal fan comprises an impeller chassis and blades, wherein each blade comprises an air supplement passage which enables an air flow to flow from a windward side of the blade to a leeward side of the blade for supplementing air to a negative pressure region of the blade. By applying the technical scheme, the air flow is centrifugally blown out along the windward side of each blade, and the air flow of each windward side (pressure side) is supplemented to the corresponding negative pressure region (a region where air flow separation is produced) of the corresponding leeward side (suction side), so that the negative pressure at each leeward side is reduced or eliminated and then air flow vortex produced by the air flow separation is eliminated to reduce the noise produced 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 the air conditioner with this centrifugal blower.
Background technique
Centrifugal blower is the core component of the conventional heat exchange blower fan system of numerous product, and it is widely used in industrial every profession and trade, and especially for field of air conditioning product, centrifugal blower is one of core component of important heat exchange blower fan system.But in field of air conditioning, the requirement of its design objective is not only very high to the requirement of drafting efficiency, and also very high to the requirement of noise experience.
In the working procedure of the centrifugal blower of prior art, as depicted in figs. 1 and 2, impeller chassis 1 rotates, air-flow is from the center air intake of impeller, then along blade 2 to surrounding blowout (in figure, thick arrow represents the sense of rotation on impeller chassis 1, small arrow represents air current flow path), the airflow breakaway of the suction surface A of the blade pressure side B of blade (corresponding with suction surface A be) can produce air-flow vortex, thus generation aerodynamic noise, very easily there is flow separation phenomenon (namely there is separation area C) in suction surface A tail end at high speed in the fan blade particularly for the large chord length of centrifugal blower, then air-flow is caused to go out stream uneven, the drafting efficiency of centrifugal blower is low, the aerodynamic noise of centrifugal blower worsens.
Summary of the invention
Main purpose of the present invention is the air conditioner providing a kind of centrifugal blower and have this centrifugal blower, the problem causing centrifugal blower aerodynamic noise to worsen with the suction surface A airflow breakaway solving the blade of centrifugal blower in prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of centrifugal blower, comprising: impeller chassis; Blade, blade comprises makes air-flow flow to the lee face of blade from the windward side of blade to carry out the air supply passage of tonifying Qi to the negative pressuren zone of blade.
Further, blade comprises the first blade sections and the second blade sections, and air supply passage is gap therebetween.
Further, the circumference of the axis hole of blade on impeller chassis is arranged, and blade is fixedly installed on impeller chassis, and the first blade sections and the second blade sections extend along the direction away from the center of circle of axis hole and are arranged in order on impeller chassis; Wherein, in the sense of rotation on impeller chassis, stagger and arrange in one end of one end away from axis of the first blade sections and the close axis of the second blade sections, the first blade sections is at the second blade sections rear.
Further, the first blade sections is along the circumferential direction evenly arranged on impeller chassis, and in the sense of rotation on impeller chassis, one end of the close axis of each second blade sections deflects predetermined angle forward relative to one end away from axis of the first blade sections of correspondence.
Further, predetermined angle is α, wherein, and 5 °≤α≤25 °.
Further, first blade sections is along the circumferential direction evenly arranged on impeller chassis, in the sense of rotation on impeller chassis, one end of the close axis of each second blade sections deflects forward a deflection angle relative to one end away from axis of the first blade sections of correspondence, wherein, the deflection angle of second adjacent blade section is unequal.
Further, deflection angle is β, β=β
0+ λ sin (k θ), wherein, λ is modulation angle and is constant, β
0for benchmark drift angle, k is the sequence number of combination type vane, and 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, provide a kind of air conditioner, comprise centrifugal blower, centrifugal blower comprises aforesaid centrifugal blower.
Further, air conditioner also comprises spiral case, and spiral case has installing space, exhaust outlet, and exhaust outlet is communicated with installing space, and centrifugal blower is arranged in installing space, and the end of blade and the inwall of spiral case have gap.
Apply technological scheme of the present invention, air-flow blows out along the windward side of blade centrifugal, by the air-flow of windward side (pressure side) being added to the negative pressuren zone (producing the region of airflow breakaway) of lee face (suction surface), thus reduce or eliminate the negative pressure at lee face place, then the air-flow spiral that airflow breakaway produces is eliminated, to reduce the noise that centrifugal blower produces.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation under prior art centrifugal blower working state;
Fig. 2 shows the sectional view of Fig. 1;
Fig. 3 shows the structural representation of the embodiment of centrifugal blower of the present invention;
Fig. 4 shows the design diagram of the relative first blade deflection equal angles of the second blade sections of the first embodiment of centrifugal blower of the present invention;
Fig. 5 shows the design diagram of the relative first blade deflection different amount of the second blade sections of the second embodiment of centrifugal blower of the present invention; And
Fig. 6 shows the structural representation of the embodiment of air conditioner of the present invention.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, impeller chassis; 20, blade;
21, the first blade sections; 22, the second blade sections;
100, centrifugal blower; 200, spiral case;
201, installing space; 202, exhaust outlet;
203, whirlpool tongue.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Fig. 3 to 6, according to embodiments of the invention, provide a kind of centrifugal blower, this centrifugal blower comprises impeller chassis 10 and blade 20.Blade 20 comprises makes air-flow flow to the lee face of blade 20 from the windward side of blade 20 to carry out the air supply passage of tonifying Qi to the negative pressuren zone of blade 20.
Apply technological scheme of the present invention, air-flow blows out along the windward side of blade centrifugal, by the air-flow of windward side (pressure side) being added to the negative pressuren zone (producing the region of airflow breakaway) of lee face (suction surface), thus reduce or eliminate the negative pressure at lee face place, then the air-flow spiral that airflow breakaway produces is eliminated, to reduce the noise that centrifugal blower produces.
Preferably, as shown in Figure 3, blade 20 comprises the first blade sections 21 and the second blade sections 22, and air supply passage is gap therebetween.
Particularly, the circumference of the axis hole of blade 20 on impeller chassis 10 is arranged, and blade 20 is fixedly installed on impeller chassis 10, and the first blade sections 21 and the second blade sections 22 extend along the direction away from the center of circle of axis hole and are arranged in order on impeller chassis 10; Wherein, in the sense of rotation on impeller chassis 10, stagger and arrange in one end of one end away from axis of the first blade sections 21 and the close axis of the second blade sections 22, and the first blade sections 21 is at the second blade sections 22 rear.Like this, when air-flow is blown over along the windward side of the first blade sections time, owing to there is gap between the second blade sections 22 and the first blade sections 21, and air-flow can be supplemented to the negative pressuren zone of blade 20 by gap, thus the air-flow spiral that elimination negative pressure causes, realize the object of the noise of abatement centrifugal blower.
In conjunction with see as shown in Figure 4, according to the first embodiment of the present invention, first blade sections 21 is along the circumferential direction evenly arranged on impeller chassis 10, in the sense of rotation on impeller chassis 10, one end of the close axis of each second blade sections 22 deflects predetermined angle forward relative to one end away from axis of the first blade sections 21 of correspondence.And predetermined angle is α, wherein, 5 °≤α≤25 °.What can simplify the first blade sections 21 of centrifugal blower and the second blade sections 22 like this arranges structure, production technology is simplified, thus reduces the difficulty of processing between centrifugal blower fan blade wheel chassis 10 and blade 20.
In conjunction with see as shown in Figure 5, according to a second embodiment of the present invention, first blade sections 21 is along the circumferential direction evenly arranged on impeller chassis 10, in the sense of rotation on impeller chassis 10, one end of the close axis of each second blade sections 22 deflects forward a deflection angle relative to one end away from axis of the first blade sections 21 of correspondence, wherein, the deflection angle of second adjacent blade section 22 is unequal.Further, deflection angle is β, β=β
0+ λ sin (k θ), wherein, λ is modulation angle and is constant, and 0.5 °≤λ≤5 °, β
0for the 5 °≤β in benchmark drift angle
0≤ 25 °, k is the sequence number of combination type vane 20, and θ is the angle between one end of the close axis of the first adjacent blade sections 21.
In conjunction with see as shown in Figure 6, rotate when the impeller chassis 10 of centrifugal blower and be with moving vane 20 to rotate, thus realizing the object of centrifugal air-out.When blade 20 rotates to tongue 203 place, whirlpool time, the air-flow that blade 20 is derived can impact whirlpool tongue 203, thus produces sharp audio-frequency noise at whirlpool tongue 203 place.In order to reduce, even eliminate and swash audio-frequency noise, the angle the second blade sections 22 deflected relative to the first blade sections 21 is according to formula β=β
0+ λ sin (k θ) chooses, make the gap length between the second blade sections 22 from the first blade sections 21 different, like this, the sharp frequency of air-flow to whirlpool tongue 203 that blade 20 is derived impacts different in whirlpool tongue 203 place at each blade 20, the sharp frequency that whirlpool tongue 203 is subject to impacts and obtains different alleviations, thus reduces sharp audio-frequency noise.
According to another aspect of the present invention, provide air conditioner, this air conditioner comprises centrifugal blower 100, and this centrifugal blower 100 comprises aforesaid centrifugal blower.
Preferably, air conditioner also comprises spiral case 200, and spiral case 200 has installing space 201, exhaust outlet 202, and exhaust outlet 202 is communicated with installing space 201, and centrifugal blower 100 is arranged in installing space 201, and the end of blade 20 and the inwall of spiral case 200 have gap.The wind that centrifugal blower 100 blows out is through the blowout of spiral case 200 water conservancy diversion, and air-flow is finally from exhaust outlet 202 source air conditioner.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
Apply technological scheme of the present invention, air-flow blows out along the windward side of blade centrifugal, the region of airflow breakaway is produced by the negative pressuren zone air-flow of windward side pressure side being added to lee face suction surface, thus reduce or eliminate the negative pressure at lee face place, then the air-flow spiral that airflow breakaway produces is eliminated, to reduce the noise that centrifugal blower produces.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a centrifugal blower, is characterized in that, comprising:
Impeller chassis (10);
Blade (20), described blade (20) comprises makes air-flow flow to the lee face of described blade (20) from the windward side of described blade (20) to carry out the air supply passage of tonifying Qi to the negative pressuren zone of described blade (20).
2. centrifugal blower according to claim 1, is characterized in that, described blade (20) comprises the first blade sections (21) and the second blade sections (22), and described air supply passage is gap therebetween.
3. centrifugal blower according to claim 2, is characterized in that,
The circumference of the axis hole of described blade (20) on described impeller chassis (10) is arranged, described blade (20) is fixedly installed on described impeller chassis (10), and described first blade sections (21) extends with described second blade sections (22) in the direction of the upper edge of described impeller chassis (10) away from the center of circle of described axis hole and is arranged in order;
Wherein, in the sense of rotation of described impeller chassis (10), stagger and arrange in one end of one end away from described axis of described first blade sections (21) and the close described axis of described second blade sections (22), described first blade sections (21) is at described second blade sections (22) rear.
4. centrifugal blower according to claim 3, it is characterized in that, described first blade sections (21) is along the circumferential direction evenly arranged on described impeller chassis (10), in the sense of rotation of described impeller chassis (10), one end of the close described axis of each described second blade sections (22) deflects predetermined angle forward relative to one end away from described axis of described first blade sections (21) of correspondence.
5. centrifugal blower according to claim 4, is characterized in that, described predetermined angle is α, wherein, and 5 °≤α≤25 °.
6. centrifugal blower according to claim 3, it is characterized in that, described first blade sections (21) is along the circumferential direction evenly arranged on described impeller chassis (10), in the sense of rotation of described impeller chassis (10), one end of the close described axis of each described second blade sections (22) deflects forward a deflection angle relative to one end away from described axis of described first blade sections (21) of correspondence, wherein, the deflection angle of adjacent described second blade sections (22) is unequal.
7. centrifugal blower according to claim 6, is characterized in that, described deflection angle is β, β=β
0+ λ sin (k θ), wherein, λ is modulation angle and is constant, β
0for benchmark drift angle, k is the sequence number of described blade (20), and θ is the angle between one end of the close described axis of adjacent described first blade sections (21).
8. centrifugal blower according to claim 7, is characterized in that, 0.5 °≤λ≤5 °.
9. an air conditioner, comprises centrifugal blower (100), it is characterized in that, described centrifugal blower (100) comprises the centrifugal blower according to any one of claim 1 to 8.
10. air conditioner according to claim 9, it is characterized in that, described air conditioner also comprises spiral case (200), described spiral case (200) has installing space (201), exhaust outlet (202), described exhaust outlet (202) is communicated with described installing space (201), described centrifugal blower (100) is arranged in described installing space (201), and the end of described blade (20) and the inwall of described spiral case (200) have gap.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597387.3A CN104329290B (en) | 2014-10-29 | 2014-10-29 | Centrifugal blower and the air-conditioner with the centrifugal blower |
| 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 blower and the air-conditioner with the centrifugal blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329290A true CN104329290A (en) | 2015-02-04 |
| CN104329290B 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 blower and the air-conditioner with the centrifugal blower |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104329290B (en) |
| WO (1) | WO2016066112A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016066112A1 (en) * | 2014-10-29 | 2016-05-06 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner having same |
| CN107061357A (en) * | 2017-01-20 | 2017-08-18 | 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 |
| 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 |
| CN111043072A (en) * | 2019-11-26 | 2020-04-21 | 奇鋐科技股份有限公司 | Disc type fan wheel 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 |
| JP2020197146A (en) * | 2019-05-31 | 2020-12-10 | 三菱重工業株式会社 | Impeller and centrifugal pump |
| US11365750B2 (en) | 2019-12-27 | 2022-06-21 | Asia Vital Components Co., Ltd. | Tray-type fan impeller structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016066112A1 (en) * | 2014-10-29 | 2016-05-06 | 珠海格力电器股份有限公司 | Centrifugal fan and air conditioner having same |
| CN107061357A (en) * | 2017-01-20 | 2017-08-18 | 美的集团股份有限公司 | Blade, centrifugal blower fan blade wheel, centrifugal blower and range hood |
| 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 |
| JP2020197146A (en) * | 2019-05-31 | 2020-12-10 | 三菱重工業株式会社 | Impeller and centrifugal pump |
| 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 |
| CN111043072A (en) * | 2019-11-26 | 2020-04-21 | 奇鋐科技股份有限公司 | Disc type fan wheel structure |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016066112A1 (en) | 2016-05-06 |
| CN104329290B (en) | 2017-03-15 |
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