WO2011099286A1 - 遠心送風機 - Google Patents
遠心送風機 Download PDFInfo
- Publication number
- WO2011099286A1 WO2011099286A1 PCT/JP2011/000734 JP2011000734W WO2011099286A1 WO 2011099286 A1 WO2011099286 A1 WO 2011099286A1 JP 2011000734 W JP2011000734 W JP 2011000734W WO 2011099286 A1 WO2011099286 A1 WO 2011099286A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bell mouth
- shroud
- outer peripheral
- peripheral surface
- centrifugal blower
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- 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
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- 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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
- F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
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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
- F04D29/40—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
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
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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
- F04D29/66—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
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2210/00—Working fluids
- F05D2210/10—Kind or type
- F05D2210/12—Kind or type gaseous, i.e. compressible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/51—Inlet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S415/00—Rotary kinetic fluid motors or pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S417/00—Pumps
Definitions
- the present invention relates to a centrifugal blower used for an indoor unit of an air conditioner, for example.
- a centrifugal blower has been used as a blower for an indoor unit of an air conditioner.
- this centrifugal blower when the fan motor is driven and the impeller rotates, air is sucked into the indoor unit from the suction port of the indoor unit. The sucked air is guided to the air intake port of the shroud by the bell mouth (hereinafter, the air flow guided to the air intake port by the bell mouth is referred to as the mainstream).
- the mainstream air is sent to the outside in the radial direction by a plurality of blades arranged along the circumferential direction between the hub and the shroud, and most of the air is blown into the room through the blowout port of the indoor unit.
- the part circulates in the indoor unit through the space on the outer peripheral surface side of the shroud toward the bell mouth, and then merges with the main stream again through the gap between the bell mouth and the shroud (hereinafter referred to as the above, and the main stream through the gap).
- the flow of air that joins is called leakage flow.
- Patent Document 1 discloses a centrifugal blower in which a large number of grooves are provided on the outer surface of a bell mouth (fan guide) in order to suppress a decrease in fan efficiency.
- this centrifugal blower the leakage flow that circulates through the space on the outer peripheral surface side of the shroud toward the bell mouth is introduced into the gap between the bell mouth and the shroud through the groove (paragraph number 0024 of Patent Document 1). , 0052, FIG. 5 and FIG. 6).
- Patent Document 1 describes that since the leakage flow is guided by the groove as described above and becomes a stable flow, it is possible to suppress a decrease in the blowing performance due to the fluctuation of the leakage flow.
- an object of the present invention is to provide a centrifugal blower that can suppress a decrease in fan efficiency due to leakage flow.
- the centrifugal blower of the present invention includes an impeller (23) and a bell mouth (25).
- the impeller (23) has a hub (15) fixed to the rotation shaft (13) of the fan motor (11), and an air suction port (19a) that opens in a circle around the rotation shaft (13).
- a shroud (19) disposed opposite the hub (15) on the front (F) side in the axial direction (A) of the rotary shaft (13) with respect to the hub (15), and the hub (15).
- a plurality of blades (21) arranged along the circumferential direction of the air suction port (19a).
- the bell mouth (25) is disposed opposite to the shroud (19) on the front (F) side in the axial direction (A) with respect to the shroud (19), and a part on the rear (R) side is the air
- the air inlet (19a) is inserted into the shroud (19) with a predetermined gap between the peripheral edge (19e) of the inlet (19a).
- the bell mouth (25) guides air sucked from the front (F) side toward the rear (R) side in the axial direction (A) to the air suction port (19a) of the shroud (19).
- the bell mouth (25) has a plurality of wall portions (27) which are arranged on the outer peripheral surface (25s) at predetermined intervals along the circumferential direction and are erected from the outer peripheral surface (25s).
- Each wall (27) extends from the front (F) side to the rear (R) side of the axial direction (A) so as to be substantially parallel to the axial direction (A) and the radial direction of the bell mouth (25). It extends along the outer peripheral surface (25s).
- centrifugal blower 51 and an indoor unit 31 including the centrifugal blower 51 according to an embodiment of the present invention will be described with reference to the drawings.
- the indoor unit 31 is a ceiling-embedded cassette indoor unit.
- the indoor unit 31 includes a substantially rectangular parallelepiped housing 33 embedded in an opening provided in the ceiling, and a decorative panel 47 attached to the lower portion of the housing 33.
- the decorative panel 47 is slightly larger in plan view than the housing 33 and is exposed to the room in a state of covering the opening of the ceiling.
- the decorative panel 47 has a rectangular suction grill 39 provided in the center thereof, and four elongated rectangular outlets 37 provided along each side of the suction grill 39.
- the indoor unit 31 includes a centrifugal blower (turbo fan) 51, a fan motor 11, a heat exchanger 43, a drain pan 45, an air filter 41, and the like in a housing 33.
- Centrifugal blower 51 includes an impeller 23 and a bell mouth 25.
- the fan motor 11 is fixed to the approximate center of the top plate of the housing 33.
- the rotation shaft 13 of the fan motor 11 extends downward.
- the heat exchanger 43 has a flat shape with a small thickness.
- the heat exchanger 43 is disposed so as to surround the periphery of the impeller 23 in a state where it rises upward from a dish-shaped drain pan 45 extending along the lower end portion thereof.
- the drain pan 45 stores water droplets generated in the heat exchanger 43. The stored water is discharged through a drainage path (not shown).
- the air filter 41 has a size that covers the entrance of the bell mouth 25 and is provided between the bell mouth 25 and the suction grill 39 along the suction grill 39.
- the air filter 41 captures dust in the air when the air sucked into the housing 33 from the suction grill 39 passes through the air filter 41.
- the impeller 23 includes a hub 15, a shroud 19, and a plurality of blades 21.
- the hub 15 is fixed to the lower end portion of the rotating shaft 13 of the fan motor 11.
- the hub 15 has a circular shape centered on the rotation shaft 13 in plan view.
- the shroud 19 is disposed opposite to the hub 15 on the front F side in the axial direction A of the rotary shaft 13 with respect to the hub 15.
- the shroud 19 has an air suction port 19 a that opens in a circle around the rotation shaft 13.
- the outer diameter of the shroud 19 increases from the front F side toward the rear R side.
- the plurality of blades 21 are arranged between the hub 15 and the shroud 19 at a predetermined interval along the circumferential direction of the air suction port 19a.
- the front F-side end of each blade 21 is joined to the inner surface of the shroud 19.
- the rear R-side end of each blade 21 is joined to the hub 15.
- Each blade 21 is a backward blade that is inclined in the direction opposite to the rotation direction (backward) with respect to the radial direction of the hub 15.
- the bell mouth 25 is disposed opposite to the shroud 19 on the front F side in the axial direction A with respect to the shroud 19.
- the bell mouth 25 includes a bell mouth main body 251 and a flange portion 252 projecting from the periphery on the front F side of the bell mouth main body 251 around the bell mouth main body 251.
- the bell mouth main body 251 has a through hole 25a penetrating in the front-rear direction.
- the outer peripheral surface 25s of the bell mouth main body 251 has a curved shape whose outer diameter decreases from the front F side toward the rear R side.
- a part on the rear R side of the bell mouth main body 251 is inserted into the shroud 19 from the air suction port 19a with a predetermined gap between the peripheral portion 19e of the air suction port 19a.
- the bell mouth 25 can guide the air sucked from the front F side toward the rear R side through the through hole 25 a to the air suction port 19 a of the shroud 19.
- the bell mouth 25 has a plurality of wall portions 27 arranged on the outer peripheral surface 25s of the bell mouth main body 251 at predetermined intervals along the circumferential direction.
- Each wall 27 is erected from the outer peripheral surface 25 s of the bell mouth 25.
- Each wall 27 extends along the outer peripheral surface 25s from the front F side toward the rear R side so as to be substantially parallel to the axial direction A and substantially parallel to the radial direction of the bell mouth 25.
- the bell mouth 25 has a plurality of air flow paths 253 surrounded on three sides by adjacent wall portions 27, 27 and an outer peripheral surface 25s.
- the air flow path 253 faces in the direction along the axial direction A. Both sides and bottom of the air flow path 253 are surrounded by the adjacent wall portion 27 and the outer peripheral surface 25s of the bell mouth 25, but the inlet and outlet of the leak flow into the air flow path 253 are open. There is nothing to block. Therefore, the leakage flow is reliably guided to the inlet of the air flow path 253 between the wall portions 27 and guided in the air flow path 253 from the front F side toward the rear R side.
- each wall 27 has a standing height Hf at the end portion 27f on the front F side that is larger than a standing height Hr at the end portion 27r on the rear R side.
- the standing height Hr and the standing height Hf are not particularly limited.
- the standing height Hr is about 1 mm to 10 mm, and the standing height Hf is about 3 mm to 20 mm. it can.
- each wall portion 27 is an inclined surface inclined with respect to the axial direction A.
- the standing height from the outer peripheral surface 25s gradually decreases from the front F side toward the rear R side.
- the peripheral edge portion 19e of the air suction port 19a is an inclined surface inclined with respect to the axial direction A.
- the inclined surface of the peripheral edge portion 19e is provided to face the inclined surface of the end portion 27r on the rear R side of the wall portion 27.
- the tip of the end portion 27r on the rear R side of each wall portion 27 is at a position (substantially the same height) that is substantially opposite to the tip of the peripheral edge portion 19e that is the end portion on the front F side of the shroud 19. Is provided.
- Both the inclined surface of the peripheral edge portion 19e and the inclined surface of the end portion 27r of the wall portion 27 are inclined so that the rear R side is located on the inner side in the radial direction than the front F side.
- the end portions are formed of the inclined surfaces, the end portion 27r on the rear R side of the wall portion 27 can be extended to a position facing the peripheral edge portion 19e of the shroud 19 or the vicinity thereof.
- each wall portion 27 may be formed integrally with the bell mouth main body 251 by sheet metal processing, resin molding, or the like, and each wall portion 27 formed separately from the bell mouth main body 251 is formed as the bell mouth main body. It may be manufactured by bonding to H.251.
- FIG. 9 is a cross-sectional view showing a modified example of the bell mouth 25. Similar to the bell mouth 25 shown in FIG. 5, the bell mouth 25 has a plurality of wall portions 27 arranged on the outer peripheral surface thereof at predetermined intervals along the circumferential direction. Each wall portion 27 is erected from the outer peripheral surface of the bell mouth 25. Each wall portion 27 extends along the outer peripheral surface from the front F side toward the rear R side so as to be substantially parallel to the axial direction A and substantially parallel to the radial direction of the bell mouth 25.
- the air of the mainstream S guided to the air suction port 19a of the shroud 19 by the bell mouth body 251 of the bell mouth 25 is mainly in the vicinity of the air suction port 19a. In the direction along the axial direction A.
- the leakage flow M1 is caused by the shroud 19 rotating in the rotation direction K in the vicinity of the air suction port 19a as indicated by the broken arrow M1. Influenced by air flow to K. For this reason, the leakage flow M1 flows in a direction inclined from the axial direction A to the rotational direction K. Therefore, when this leakage flow M1 merges with the main flow S, the flow of the main flow S is disturbed by the leakage flow M1, resulting in an increase in blowing sound and a decrease in fan efficiency.
- the leakage flow M is along the air flow path 253 surrounded by the adjacent wall portion 27 and the outer peripheral surface 25S of the bell mouth main body 251. Then, it is guided from the front F side to the rear R side, and passes through the gap between the rear R side end of the bell mouth body 251 and the front F side end of the shroud 19.
- the leakage flow M that has passed through the gap is corrected so that the flow direction approaches the axial direction A in the vicinity of the air suction port 19a as compared with the conventional case. Accordingly, interference when the leakage flow M joins the main flow S is suppressed.
- FIG. 10 is a graph showing the relationship between air volume and blowing sound
- FIG. 11 is a graph showing the relationship between air volume and motor input.
- the solid lines in FIGS. 10 and 11 show the characteristics (examples) of the indoor unit 31 including the centrifugal fan 51 according to the present embodiment shown in FIGS. 1 to 8, and the broken lines in FIGS.
- the characteristic (comparative example) of the indoor unit 31 provided with the conventional bellmouth which 27 is not provided is shown.
- the data shown in FIG. 10 shows that the standing height Hr on the rear R side is 3 mm, the standing height Hf on the front F side is 5 mm, and the standing height is gradually increased from the rear R side toward the front F side.
- the measured wall 27 was measured using the bell mouth 25 provided on the bell mouth main body 251.
- the data shown in FIG. 11 shows that the standing height Hr on the rear R side is 6 mm, the standing height Hf on the front F side is 8 mm, and the standing height is gradually increased from the rear R side toward the front F side.
- the measured wall 27 was measured using the bell mouth 25 provided on the bell mouth main body 251.
- the motor input is reduced in the embodiment as compared with the comparative example.
- the motor input required to obtain the same air volume as that in the comparative example is smaller than that in the comparative example.
- the example shows that the amount of leakage flow is smaller than that of the comparative example.
- shaft of the graph of FIG. 11 is 10W.
- the centrifugal blower of this embodiment includes an impeller and a bell mouth.
- the impeller has a hub fixed to a rotation shaft of a fan motor, and an air suction port that opens in a circle around the rotation shaft, and the front side of the rotation shaft in the axial direction of the rotation shaft
- a shroud disposed opposite to the hub, and a plurality of blades arranged between the hub and the shroud along a circumferential direction of the air suction port.
- the bell mouth is disposed opposite to the shroud on the front side in the axial direction with respect to the shroud, and a part of the rear side is provided with a predetermined gap between the peripheral portion of the air suction port and the shroud.
- the bell mouth guides air sucked from the front side in the axial direction toward the rear side to the air suction port of the shroud.
- the bell mouth has a plurality of wall portions that are arranged at predetermined intervals along the circumferential direction on the outer circumferential surface thereof and are erected from the outer circumferential surface. Each wall portion extends along the outer peripheral surface from the front side to the rear side in the axial direction so as to be substantially parallel to the axial direction and the radial direction of the bell mouth.
- the wall portion serves as a resistance to leakage flow, and the amount of leakage flow can be reduced.
- the direction of the leakage flow can be made closer to the direction of the main flow, it is possible to suppress the main flow from being disturbed when the leakage flow joins the main flow. Thereby, the fall of fan efficiency can be suppressed. Specifically, it is as follows.
- the mainstream air guided to the air inlet of the shroud by the bell mouth flows mainly in the direction along the axial direction of the rotating shaft in the vicinity of the air inlet.
- the leakage flow in the conventional centrifugal blower is influenced by the air flow in the rotation direction caused by the rotation of the shroud and flows in the direction inclined from the axial direction of the rotation shaft to the rotation direction.
- the directions of the main flow and the leakage flow are greatly different, so when the leakage flow merges with the main flow, the main flow is disturbed by the leakage flow Leading to a decrease in fan efficiency.
- the wall portion extends along the outer peripheral surface of the bell mouth from the front side in the axial direction toward the rear side so as to be substantially parallel to the axial direction and the radial direction. That is, the air flow path sandwiched between adjacent wall portions is directed in the direction along the axial direction.
- This air flow path is a space in which both sides and the bottom are surrounded by adjacent walls and the outer peripheral surface of the bell mouth, and the inlet and outlet of the leakage flow into this air flow path are opened and blocked. There is no. Therefore, since the leakage flow can be reliably guided and circulated in the air flow path between the walls, an excellent effect of guiding the leakage flow can be obtained.
- the leakage flow flowing in the inclined direction reaches the wall portion and passes through the air flow path between the wall portions, the direction of the leakage flow is corrected in the axial direction by the air flow path. Therefore, compared with the case where there is no wall part, the resistance which air receives at the time of distribution
- the flow direction of the leakage flow rectified by the air flow path is close to the axial direction, which is the main flow direction. Therefore, when the leakage flow merges with the main flow in the vicinity of the air suction port, the degree of interference of the leakage flow with the main flow is reduced. Therefore, it is possible to suppress a decrease in fan efficiency due to the leakage flow.
- the standing height from the outer peripheral surface at the front end of each wall portion is higher than the standing height from the outer peripheral surface at the rear end portion of each wall portion. Is also preferably large.
- the wall portion can catch a large amount of leakage flow at the rear end portion where the standing height is large and guide it to the air flow path, while the front portion has a small standing height. At the end, contact with the peripheral edge of the air inlet of the shroud can be suppressed.
- the standing height of each wall part from the outer peripheral surface may gradually increase from the rear side end part toward the front side end part.
- each wall portion is an inclined surface whose standing height from the outer peripheral surface gradually decreases from the front side toward the rear side, and the air suction
- the peripheral portion of the mouth may be an inclined surface facing the inclined surface of the wall portion.
- each wall and the peripheral edge of the air suction port are the inclined surfaces facing each other, so that the wall can be extended to the vicinity of the shroud and at the time of rotation. It can suppress that each other contacts.
- the standing height of each wall portion is gradually increased from the rear side toward the front side
- the standing height is increased from the rear side to the front side. You may increase in steps toward.
- the said standing height of each wall part may be constant from the back side to the front side, and may decrease toward the front side from the back side.
- the said edge part of the said back side in each wall part is an inclined surface from which the said standing height reduces gradually toward the back side from the said front side
- the said peripheral part of the said air inlet port has been described by taking as an example the case of an inclined surface facing the inclined surface of the wall portion, but is not limited thereto.
- the rear end of each wall may be a surface perpendicular to the axial direction, not an inclined surface.
- the peripheral edge portion of the air suction port may be a surface perpendicular to the axial direction.
- tip of the edge part of the rear side of each wall part is provided in the position (substantially the same height) which substantially opposes the front-end
- the present invention is not limited to this.
- the rear end of each wall may be provided on the front side or the rear side of the front end of the shroud.
- the centrifugal blower is used as an example of an indoor unit of an air conditioner. However, it can be used for other purposes.
Abstract
Description
13 回転軸
15 ハブ
17 空気吸込口
19e 空気吸込口の周縁部
19 シュラウド
21 羽根
23 羽根車
25 ベルマウス
251 ベルマウス本体
252 フランジ部
253 空気流路
25a 貫通口
25s ベルマウス本体の外周面
27 壁部
27f 壁部の前方側の端部
27r 壁部の後方側の端部
31 室内機
A ファンモータの回転軸の軸方向
F 前方
R 後方
Claims (4)
- ファンモータ(11)の回転軸(13)に固定されるハブ(15)と、前記回転軸(13)を中心として円形に開口する空気吸込口(19a)を有し、前記ハブ(15)に対して前記回転軸(13)の軸方向の前方(F)側において前記ハブ(15)に対向配置されたシュラウド(19)と、前記ハブ(15)と前記シュラウド(19)との間に前記空気吸込口(19a)の周方向に沿って配列された複数の羽根(21)とを含む羽根車(23)と、
前記シュラウド(19)に対して前記軸方向の前方(F)側において前記シュラウド(19)に対向配置され、後方(R)側の一部が前記空気吸込口(19a)の周縁部(19e)との間に所定の隙間を設けた状態で前記空気吸込口(19a)から前記シュラウド(19)内に挿入されており、前記軸方向の前方(F)側から後方(R)側に向かって吸い込まれる空気を前記シュラウド(19)の前記空気吸込口(19a)に案内するベルマウス(25)と、を備え、
前記ベルマウス(25)は、その外周面(25s)に周方向に沿って所定の間隔で配列されて前記外周面(25s)から立設された複数の壁部(27)を有し、
各壁部(27)は、前記軸方向及び前記ベルマウス(25)の半径方向に略平行となるように前記軸方向の前方(F)側から後方(R)側に向かって前記外周面(25s)に沿って延びている、遠心送風機。 - 各壁部(27)の前記前方(F)側の端部(27f)における前記外周面(25s)からの立設高さは、各壁部(27)の前記後方(R)側の端部(27r)における前記外周面(25s)からの立設高さよりも大きい、請求項1に記載の遠心送風機。
- 各壁部(27)の前記外周面(25s)からの立設高さは、前記後方(R)側の端部(27r)から前記前方(F)側の端部(27f)に向かって次第に増加している、請求項2に記載の遠心送風機。
- 各壁部(27)における前記後方(R)側の端部(27r)は、前記外周面(25s)からの立設高さが前記前方(F)側から後方(R)側に向かって次第に減少する傾斜面であり、
前記空気吸込口(19a)の前記周縁部(19e)は、前記壁部(27)の前記傾斜面に対面する傾斜面である、請求項1~3のいずれかに記載の遠心送風機。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11742035A EP2535594A1 (en) | 2010-02-10 | 2011-02-09 | Centrifugal blower |
US13/577,917 US20120308370A1 (en) | 2010-02-10 | 2011-02-09 | Centrifugal fan |
KR1020127021594A KR20120123440A (ko) | 2010-02-10 | 2011-02-09 | 원심 송풍기 |
BR112012020088A BR112012020088A2 (pt) | 2010-02-10 | 2011-02-09 | ventilador de centrífuga |
CN2011800091541A CN102753836A (zh) | 2010-02-10 | 2011-02-09 | 离心送风机 |
AU2011215464A AU2011215464A1 (en) | 2010-02-10 | 2011-02-09 | Centrifugal blower |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-027876 | 2010-02-10 | ||
JP2010027876A JP4844678B2 (ja) | 2010-02-10 | 2010-02-10 | 遠心送風機 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011099286A1 true WO2011099286A1 (ja) | 2011-08-18 |
Family
ID=44367572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/000734 WO2011099286A1 (ja) | 2010-02-10 | 2011-02-09 | 遠心送風機 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20120308370A1 (ja) |
EP (1) | EP2535594A1 (ja) |
JP (1) | JP4844678B2 (ja) |
KR (1) | KR20120123440A (ja) |
CN (1) | CN102753836A (ja) |
AU (1) | AU2011215464A1 (ja) |
BR (1) | BR112012020088A2 (ja) |
WO (1) | WO2011099286A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013021618A1 (ja) * | 2011-08-10 | 2013-02-14 | ダイキン工業株式会社 | 遠心送風機 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5522306B1 (ja) * | 2012-12-21 | 2014-06-18 | ダイキン工業株式会社 | 遠心ファン |
KR102199376B1 (ko) | 2013-07-12 | 2021-01-06 | 엘지전자 주식회사 | 원심 송풍기 및 이를 포함하는 공기 조화기 |
US10036400B2 (en) | 2014-05-02 | 2018-07-31 | Regal Beloit America, Inc. | Centrifugal fan assembly and methods of assembling the same |
JP6369684B2 (ja) * | 2014-10-10 | 2018-08-08 | 株式会社富士通ゼネラル | 天井埋込型空気調和機 |
JP2016132991A (ja) * | 2015-01-15 | 2016-07-25 | パナソニックIpマネジメント株式会社 | 送風装置 |
US9915267B2 (en) * | 2015-06-08 | 2018-03-13 | Air Distribution Technologies Ip, Llc | Fan inlet recirculation guide vanes |
CN107850318B (zh) * | 2015-07-08 | 2020-06-26 | 日立江森自控空调有限公司 | 空调机的室内机 |
WO2018020894A1 (ja) * | 2016-07-25 | 2018-02-01 | 株式会社Soken | 遠心送風機 |
CN112236598B (zh) | 2018-06-11 | 2022-12-16 | 开利公司 | 离心式风扇的叶轮-进气口接口和具有该接口的离心式风扇 |
EP3647603A1 (en) | 2018-10-31 | 2020-05-06 | Carrier Corporation | Arrangement of centrifugal impeller of a fan for reducing noise |
CN111442378B (zh) * | 2019-01-17 | 2021-09-21 | 青岛海尔空调器有限总公司 | 吊顶式空调室内机 |
KR20210115564A (ko) * | 2020-03-13 | 2021-09-27 | 엘지전자 주식회사 | 팬모듈 및 이를 구비하는 휴대형 공기정화기 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5536946U (ja) * | 1978-09-01 | 1980-03-10 | ||
JPH084684A (ja) * | 1994-06-17 | 1996-01-09 | Mitsubishi Heavy Ind Ltd | 遠心ファン |
JPH09126193A (ja) * | 1995-10-31 | 1997-05-13 | Denso Corp | 遠心式送風機 |
JP2001003899A (ja) | 1999-06-23 | 2001-01-09 | Daikin Ind Ltd | 送風機及びこれを用いた空気調和機並びに空気清浄機 |
JP2008138536A (ja) * | 2006-11-30 | 2008-06-19 | Matsushita Electric Ind Co Ltd | 遠心送風機 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5948523B2 (ja) * | 1978-09-05 | 1984-11-27 | 隆 浦山 | 交流電磁石 |
-
2010
- 2010-02-10 JP JP2010027876A patent/JP4844678B2/ja not_active Expired - Fee Related
-
2011
- 2011-02-09 CN CN2011800091541A patent/CN102753836A/zh not_active Withdrawn
- 2011-02-09 US US13/577,917 patent/US20120308370A1/en not_active Abandoned
- 2011-02-09 KR KR1020127021594A patent/KR20120123440A/ko not_active Application Discontinuation
- 2011-02-09 WO PCT/JP2011/000734 patent/WO2011099286A1/ja active Application Filing
- 2011-02-09 BR BR112012020088A patent/BR112012020088A2/pt not_active IP Right Cessation
- 2011-02-09 AU AU2011215464A patent/AU2011215464A1/en not_active Abandoned
- 2011-02-09 EP EP11742035A patent/EP2535594A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5536946U (ja) * | 1978-09-01 | 1980-03-10 | ||
JPH084684A (ja) * | 1994-06-17 | 1996-01-09 | Mitsubishi Heavy Ind Ltd | 遠心ファン |
JPH09126193A (ja) * | 1995-10-31 | 1997-05-13 | Denso Corp | 遠心式送風機 |
JP2001003899A (ja) | 1999-06-23 | 2001-01-09 | Daikin Ind Ltd | 送風機及びこれを用いた空気調和機並びに空気清浄機 |
JP2008138536A (ja) * | 2006-11-30 | 2008-06-19 | Matsushita Electric Ind Co Ltd | 遠心送風機 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013021618A1 (ja) * | 2011-08-10 | 2013-02-14 | ダイキン工業株式会社 | 遠心送風機 |
Also Published As
Publication number | Publication date |
---|---|
US20120308370A1 (en) | 2012-12-06 |
AU2011215464A1 (en) | 2012-09-06 |
JP4844678B2 (ja) | 2011-12-28 |
KR20120123440A (ko) | 2012-11-08 |
EP2535594A1 (en) | 2012-12-19 |
BR112012020088A2 (pt) | 2016-05-17 |
JP2011163235A (ja) | 2011-08-25 |
CN102753836A (zh) | 2012-10-24 |
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