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WO1998053211A1 - Soufflante centrifuge multi-pales - Google Patents

Soufflante centrifuge multi-pales Download PDF

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Publication number
WO1998053211A1
WO1998053211A1 PCT/JP1998/002199 JP9802199W WO9853211A1 WO 1998053211 A1 WO1998053211 A1 WO 1998053211A1 JP 9802199 W JP9802199 W JP 9802199W WO 9853211 A1 WO9853211 A1 WO 9853211A1
Authority
WO
WIPO (PCT)
Prior art keywords
centrifugal fan
blade
blades
air
flow path
Prior art date
Application number
PCT/JP1998/002199
Other languages
English (en)
Japanese (ja)
Inventor
Masao Shiotani
Yuzuru Nakamura
Original Assignee
Toto Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toto Ltd. filed Critical Toto Ltd.
Priority to JP55022898A priority Critical patent/JP4269092B2/ja
Publication of WO1998053211A1 publication Critical patent/WO1998053211A1/fr

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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
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis

Definitions

  • the present invention relates to a multi-blade centrifugal fan, and more particularly to an improved blade structure for increasing wind power.
  • Multi-blade centrifugal fans basically consist of a number of blades (blades) arranged in a ring on a rotating substrate. When this is rotated, outside air is sucked into the inner peripheral side of the annular cascade from the opening on the tip side in the axial direction, and the sucked air is blown out of the cascade through the gap between the blades by centrifugal force.
  • One problem with the multi-blade centrifugal fan that works on such a basic principle is the relationship between the air flow that blows from the tip of the fan to the outer circumference, and the efficiency on the suction side of the fan, that is, the portion near the tip, is compared. The point is that it becomes lower.
  • a multi-blade fan disclosed in Japanese Patent Application Laid-Open No. 7-233798 is equipped with an annular auxiliary wing on the tip side of an annular main cascade on a rotating substrate.
  • the main cascade and the auxiliary cascade are separated from each other by a cylindrical body that curves obliquely concavely from the inner peripheral tip of the auxiliary cascade to the outer peripheral base end.
  • a bell mouth is attached to guide the outside air to the inner peripheral side of the main cascade and to the front end of the auxiliary wing.
  • the multi-blade blower disclosed in Japanese Patent Application Laid-Open No. It replaces the low-efficiency front-end part of the basic structure of a multi-blade centrifugal fan with a mixed-flow fan that draws in air from the front end and diagonally outwards.
  • a mixed flow fan is not very high in principle, so that a remarkable increase in airflow cannot be expected.
  • an object of the present invention is to provide an improved multi-blade centrifugal fan capable of obtaining a larger air flow than the technology. Disclosure of the invention
  • a multi-blade centrifugal fan includes: a first centrifugal fan having a relatively small inner peripheral diameter having a plurality of first blade plates arranged on a rotating board; A second centrifugal fan having a relatively large inner peripheral diameter and having a plurality of second blades arranged on the tip side of the centrifugal fan.
  • a multi-blade centrifugal fan includes a plurality of centrifugal fans having different inner peripheral diameters, and a centrifugal fan having a relatively large inner peripheral diameter is provided at a distal end side of the centrifugal fan having a relatively small internal peripheral diameter. Fans are located.
  • a multi-blade centrifugal fan includes a plurality of first blade plates arranged on a rotating substrate and having a relatively large width in a radial direction, and a tip of a row of the first blade plates. And a plurality of second vanes having a relatively narrow width in the radial direction arranged near the outer periphery on the side.
  • a multi-blade centrifugal fan includes a plurality of blades arranged on a rotating board, wherein each blade has a first portion having a relatively large width in a radial direction. And a second portion having a relatively narrow width in the radial direction, which is disposed near the outer periphery on the distal end side of the first portion.
  • a multi-blade centrifugal fan includes a plurality of blades arranged in a ring on a rotating substrate, and each blade has a relatively small inner peripheral diameter. It has a first portion arranged, and a second portion arranged on the distal end side of the first portion and arranged with a relatively large inner peripheral diameter.
  • a multi-blade centrifugal fan includes a plurality of blades arranged on a rotating board, and the shape of the inner peripheral surface of the row of the blades is changed from a base end to a tip end.
  • the shape is such that the diameter gradually increases toward it.
  • the row of the first blades functions as a centrifugal fan having a small inner peripheral diameter
  • the second blade arranged at the tip end thereof has The row of vanes functions as a centrifugal fan with a large inner diameter (second centrifugal fan).
  • the multi-blade centrifugal fan of the present invention has a structure in which another centrifugal fan having a larger inner peripheral diameter is arranged on the tip side of a centrifugal fan having a certain inner peripheral diameter. be able to.
  • a centrifugal fan with a large inner diameter produces a large air flow instead of the tip portion, which had a small air flow in the basic structure of the conventional multi-blade centrifugal fan described above. Blower volume increases.
  • the centrifugal fan with a large inner peripheral diameter at the front end has a larger air flow rate because it is a centrifugal fan than the mixed flow fan at the front end of JP-A-7-233798. Can be born.
  • the distal end surface of the centrifugal fan having a small inner peripheral diameter on the proximal end is directed from the inner peripheral side to the outer peripheral side with respect to the rotating shaft and is directed from the distal end side to the proximal end side.
  • a large-diameter centrifugal fan blade is disposed near the outer periphery on the inclined front end surface.
  • a particularly inefficient portion of the centrifugal fan on the proximal end is cut off, so that the cut surface forms an inclined distal end surface. It plays a role in smoothing the airflow entering the centrifugal fan. Therefore, the effect of increasing the air volume is further enhanced Good.
  • FIG. 1 is a plan view of a multi-blade centrifugal fan according to an embodiment of the present invention, as viewed from a distal end side having an air suction port.
  • Fig. 2 is a cross-sectional view of the fan taken along the line A-A in Fig. 1.
  • FIG. 3 is a sectional view of a multi-blade centrifugal fan according to a second embodiment of the present invention.
  • FIG. 4 is a sectional view of a multi-blade centrifugal fan according to a third embodiment of the present invention.
  • FIG. 5 is a sectional view of a multi-blade centrifugal fan according to a fourth embodiment of the present invention.
  • FIG. 6 is a sectional view of a multi-blade centrifugal fan according to a fifth embodiment of the present invention.
  • FIG. 5 is a sectional view of a multi-blade centrifugal fan according to a sixth embodiment of the present invention.
  • FIG. 8 is a sectional view of a multi-blade centrifugal fan according to a seventh embodiment of the present invention.
  • FIG. 9 is a sectional view of a multi-blade centrifugal fan according to an eighth embodiment of the present invention.
  • FIG. 10 is a sectional view of a multi-blade centrifugal fan according to a ninth embodiment of the present invention.
  • FIG. 11 is a sectional view of a multi-blade centrifugal fan according to a tenth embodiment of the present invention.
  • FIG. 12 is a cross-sectional view of the multi-blade centrifugal fan according to the first embodiment of the present invention.
  • FIG. 13 is a plan view of the multiblade centrifugal fan according to the first or second embodiment of the present invention, as viewed from the tip side.
  • Fig. 14 is a cross-sectional view of the fan taken along the line D-D in Fig. 13.
  • FIG. 15 is a diagram showing performance test results of the first and second embodiments in comparison with those of the conventional basic structure.
  • FIG. 16 shows the multi-blade centrifugal fan of the present invention shown in Figs. 1 and 2 (where all the first blades 3 have the same width), the conventional sirocco fan and the conventional radial alpha.
  • FIG. 6 is a diagram showing test results of performance at 200 rpm—constant rotation speed for three types of fans.
  • Fig. 17 shows the test results of Fig. 16 by normalizing the air flow Q, the static pressure P s on the vertical axis and the noise level LA to the flow coefficient, pressure coefficient and specific noise, respectively.
  • Fig. 19 shows the total pressure efficiency of the five types of fans shown in Figs. 1 and 2, the conventional fan, the conventional radial fan, the conventional multi-layer disc fan, the conventional sirocco fan, and the conventional turbo fan. The figure which showed the test result of.
  • FIG. 20 is a cross-sectional view of one embodiment of a blower using the fan of the present invention. Best mode for carrying out the invention
  • FIG. 1 is a plan view of a multi-blade centrifugal fan according to an embodiment of the present invention as viewed from the front end side having an air intake port.
  • FIG. 2 is a cross-sectional view of the fan taken along line AA in FIG. You.
  • the “tip side” refers to the side of the air intake port of the multi-blade centrifugal fan
  • the “proximal side” refers to the side of the rotating board 1.
  • first blade plates 3 are erected on a rotating substrate 1 having a circular planar shape in parallel with the rotation axis C. These multiple first blade plates 3 are arranged at a constant pitch along the outer peripheral edge of the rotating substrate 1 in an annular shape around the rotation axis C.
  • the outer peripheral base ends of the annular rows of the first blade plates 3 are connected by a reinforcing ring 4.
  • the annular row of the first blades 3 functions as a “first centrifugal fan”.
  • the annular row of the first blades 3 shows the air flow indicated by the arrow W1 in FIG.
  • outside air is sucked into the inner circumferential space 5 from the front end side opening 7 and acts to blow out the sucked air to the outer circumferential side through the gap between the blade plates 3.
  • the center of the substrate 1, which forms the bottom surface of the inner peripheral space 5 is slightly lifted to the tip end, and It forms a moderate slope from to the surroundings.
  • two types of blades 3L having different widths that is, having different amounts of protrusion to the inner peripheral side
  • the first blade plate 3 has a forward wing whose inner and outer ends are curved so as to form an acute angle with respect to the rotation direction B. It has become a multi-winged "Shiroi Fan". However, it is not always necessary to have such a structure. For example, all of the first blade plates 3 may have the same width (that is, the same amount of protrusion toward the inner peripheral side).
  • the blade 3 may be a flat plate to form a “radial fan”, or the first blade 3 may be a swept wing to form a “turbo fan”.
  • the first blade plate 3 moves a portion of the blade plate 3, which was originally substantially rectangular, on the outer periphery of the distal end from the inner peripheral side to the outer peripheral side from the distal end side to the proximal end side.
  • it has a shape as if it were cut along a line inclined with respect to the rotation axis C. That is, the tip surface of the first blade plate 3 has the inclined surface as described above.
  • An annular air guide plate 9 is joined to the inclined front end surface, and a large number (for example, about 100) of second blade plates 11 are placed on the surface near the outer periphery of the air guide plate 9. Are erected in parallel to the rotation axis C and arranged in an annular shape.
  • the width of these second blades 11 along the radial direction is clearly smaller than that of the first blades 3. Therefore, the annular row of the second blades 11 has a larger inner peripheral diameter than the annular row of the first blades 3, and the inner peripheral side of the first blade 3 A space 13 is formed between the inclined tip surface.
  • the annular row of the second blades 11 functions as a “second centrifugal fan”. That is, when the substrate 1 is rotated, the annular row of the second blades 11 is opened into its inner peripheral space 13 as shown by the arrow W2 in FIG. External air is sucked in from 15 and acts to blow out the sucked air to the outer peripheral side through the gap between the blades 11.
  • the height of the tip 11 a of the second blade 11 is set to the inner tip of the first blade 3. It is slightly higher than the part 3a (that is, it protrudes to the tip side from the first blade 3).
  • the air guide plate 9 forming the bottom surface of the inner peripheral space 13 is As shown in FIG. 2, it is inclined with respect to the rotation axis C and is appropriately curved in a concave arc shape.
  • the second blade 11 is curved like the first blade 3, but it is not always necessary, and the shape and the number of the second blade 11 are different from those of the first blade 3 (for example, FIGS. 13 and 14). Embodiment shown in FIG.
  • the outer periphery of the tip end of the second blade plate 11 is connected by a reinforcing ring 17.
  • the inner / outer diameter ratio (inner diameter / outer diameter) of the annular row of the first blades 3 is, for example, about 60% to 65%
  • the inner / outer diameter ratio of the annular row of the second blades 11 is, for example, 85%. % To about 90%, but it is not necessary to be so, and other values may be used.
  • the multi-blade centrifugal fan having the above configuration can be integrally manufactured by, for example, injection molding using synthetic resin, but it is needless to say that it can be manufactured by other materials such as metal and other methods. .
  • the annular row of the first blades 3 and the annular row of the second blades 11 each function as a “centrifugal fan” as described above.
  • the annular row of the first blades 3 draws outside air into the inner circumferential space 5 from the front-end opening 7, and flows the sucked air toward the outer circumference through the gap between the blades 3. Blow out.
  • the annular row of the second blades 11 sucks outside air into the inner peripheral space 13 from the opening 15 on the tip side, and passes the intake air through the gap between the blades 11. Blow out to the outer side.
  • the place where the centrifugal fan action of the second blade plate 11 mainly works is a portion of the first blade plate 3 on the outer peripheral side of the tip as if it were cut off.
  • this portion has been conventionally regarded as a problem in that the efficiency is relatively low and the air flow rate is small. Part.
  • this problematic part of the “first centrifugal fan” by the first blade plate 3 is cut away, and the “second centrifugal fan” by the second blade plate 11 having the inner circumferential space 13 is removed.
  • the air guide plate 9 forming the bottom surface of the “second centrifugal fan” facilitates the flow of the air drawn into the inner peripheral space 13 to the second blade plate 11 by its inclination and curvature. .
  • the air volume in this problem part is improved, and thus the overall air volume is increased.
  • This effect of increasing the air volume is greater than that using the mixed flow fan as described in the section of the prior art.
  • a large air flow has the advantage of requiring a smaller size to obtain the same air flow.
  • the present invention is not limited to the above-described embodiment, but can be implemented in other various forms. Some representative embodiments are illustrated below, and differences from the embodiments shown in FIGS. 1 and 2 will be described.
  • the height of the tip 3a on the inner circumferential side of the first blade plate 3 is the same as the height of the tip 11a of the second blade plate 11. It is.
  • the tip 3a on the inner circumferential side of the first blade plate 3 is slightly higher than the tip 11a of the second blade plate 11.
  • the heights of the tip portions of the first blade plate 3 and the second blade plate 11 may be the same or slightly different. However, as in the embodiment shown in FIG. When the height of the tip 3 is slightly lower than that of the second blade 11, a more preferable air volume increasing effect can be obtained.
  • the air guide plate 9 (that is, the inclined front end face of the first blade plate) is not curved but linearly inclined.
  • the multi-blade centrifugal fan shown in the sectional view of FIG. 6 has no baffle plate 9 and each first blade plate 3 and each second blade plate 11 are formed as one blade plate. It is.
  • the air guide plate 9 is formed only at the bottom of the inner peripheral space 13 of the second blade plate 11, and the first blade plate 3 and the second The blade 11 is formed as one blade.
  • the air guide plate 9 is formed only at the base end of the second blade plate 11, and the bottom of the inner peripheral space 13 of the second blade plate 11 is formed. Has no baffle plate 9.
  • the air guide plate 9 covers the entire front end surface of the first blade plate 3.
  • the multi-blade centrifugal fan shown in the cross-sectional view of FIG. 10 has a plurality of annular rectifying plates 19 mounted on the outer periphery of the blades 3 and 11 (or one annular rectifying plate 19 is formed in a spiral shape). (Wrapped multiple times).
  • the annular baffle 19 reduces the density of the airflow blown out between the blades 3 and 11, thereby contributing to an increase in air volume and a reduction in noise.
  • the annular current plate 19 is thin and has a narrow width in the radial direction.
  • the cross-sectional shape may be square, triangular, or any other suitable polygon or streamline. Various things can be adopted.
  • the outer peripheral edge of the rotating board 1 extends to the outer peripheral edge of the annular row of the first blades 3, and the base end face 3 of the annular row of the first blades 3. a is completely closed.
  • the base end face of the annular row of the blades 3 is open, the wind can be blown out from the base end face, so that a larger air volume can be obtained.
  • the inner peripheral edge of the reinforcing ring 17 extends to the inner peripheral edge of the annular row of the second blades, and the tip surface of the annular row of the second blades 1 la Is completely obstructed.
  • FIG. 13 is a plan view of a multi-blade centrifugal fan according to still another embodiment as viewed from the front end side
  • FIG. 14 is a cross-sectional view along the line DD.
  • the main feature of this multi-blade centrifugal fan is that the outer diameter of the annular row of the second blades 11 is larger than the outer diameter of the annular row of the first blades 3. Accordingly, the inner peripheral diameter of the annular row of the second blade plate 11 is also larger than that shown in FIGS. 1 to 12, for example, as shown in the drawing, substantially equal to the outer diameter of the first blade plate 3. It is designed to have the same diameter. Therefore, most of the second blade plate 11 protrudes toward the outer peripheral side of the first blade plate 3.
  • the shape and number of the second blades 11 are also designed independently of those of the first blades 3, for example, as shown, the number of the second blades 11 is about 60 And constitutes a “multi-blade sirocco fan” (however, this need not be the case; it may constitute a “radial fan” or a “turbo fan”, and the number of blades may be the same as that of the first blade 3). It may be the same).
  • the base end surface of the portion of the second blade plate 11 that protrudes outward from the first blade plate 3 is covered with the baffle plate 9 as shown in the figure, but is not covered with the baffle plate 9. (In this case, it is desirable to connect the outer periphery of the base end of the second blade 11 with an additional reinforcing ring in order to obtain sufficient strength).
  • the inner space 13 of the “second centrifugal fan” formed by the second blade plate 11 is wide and the outer diameter is large. The increasing effect is even higher.
  • Fig. 15 is a P-Q diagram showing the performance test results of the multi-blade centrifugal fan shown in Figs. 13 and 14 and the conventional multi-blade centrifugal fan with the basic structure (air volume Q on the horizontal axis, static on the vertical axis). Pressure Ps).
  • the two types of fans tested had substantially the same external size.
  • the sample points associated with the straight lines indicate the operating points of the two types of fans having the same rotational speed, and the rotational speeds (rpm) at that time are described beside each sample point.
  • the embodiment of the present invention can provide a higher static pressure range and supply a larger air volume at the same rotation speed as compared with the conventional basic structure.
  • FIGS. 16 and 17 show the multi-blade centrifugal fan of the present invention shown in FIGS. 1 and 2 (however, all the first blades 3 have the same width), the conventional sirocco fan and the conventional radial fan.
  • the results of performance tests at 2000 rpm—constant rotation speed for each type of fan are shown.
  • the horizontal axis represents the airflow Q
  • the vertical axis represents the static pressure Ps and the noise level LA.
  • the air volume Q, the static pressure P s on the vertical axis, and the noise level LA in Fig. 16 are normalized to a flow coefficient, a pressure coefficient, and a specific noise, respectively.
  • the results of the performance test at a conventional sirocco fan at 2280 rpm are shown.
  • the horizontal axis shows the airflow Q
  • the vertical axis shows the static pressure Ps and the noise level LA.
  • the three fans tested had the same external dimensions of 125 mm outside diameter and 55 mm length.
  • the fan of the present invention had 100 curved first blades, had an inner diameter of 92 mm, and had 120 curved second blades, and had an inner diameter of 110 mm.
  • Conventional radial fans have 120 straight blades, Its internal diameter was 95 mm.
  • a conventional sirocco fan had 100 curved blades and an inner diameter of 95 mm.
  • the fan of the present invention has much better P-Q characteristics and quietness than the conventional radial and sirocco fans having the same external size.
  • Fig. 19 shows the total pressure of the five types of fans shown in Figs. 1 and 2, the conventional radial fan, the conventional multilayer disc fan, the conventional sirocco fan, and the conventional evening fan. The efficiency test results are shown. The five fans tested had substantially the same external size.
  • FIG. 20 shows a schematic cross-sectional structure of one embodiment of a blower using the multi-blade fan of the present invention.
  • the blower 100 shown in FIG. 20 is used in, for example, a bathroom clothes dryer, an air conditioner, a ventilation device such as a bathroom, a kitchen or a toilet, a combustion device such as a water heater, a hand dryer, an air curtain device, and the like. Suitable for blower and air supply / exhaust device.
  • the blower 100 can also be used as a blower in a refrigerator, a heating device, an electronic device such as a copying machine or a computer, and a local cleaning device for a toilet.
  • the blower 100 has an outer case 101 having an air inlet 109 and an air outlet 111.
  • a multi-blade fan 107 of the present invention housed in a fan case 105 is arranged in an air flow passage 113 extending from an air inlet 111 to an air outlet 111 in the outer case 101.
  • air conditioners 103 such as heaters, coolers or heat exchangers, for heating, cooling or drying the air, etc., should also be provided in the air passage 113. Be killed.
  • the air conditioner 103 is shown near the air inlet 109 or by a dotted line. It can be located at the air outlet 103 as well as at any other suitable location. As indicated by the arrow, when the fan 107 of the present invention rotates, outside air enters the blower 100 from the air inlet 109 and blows out from the air outlet 103.
  • the multi-blade fan of the present invention can also be configured by partially combining the components of some of the embodiments described above.
  • it can be applied not only to sirocco fans but also to various types of fans such as radial fans and Yuichibo fans.
  • each of the above-described embodiments is constituted by a two-stage centrifugal fan having large and small inner diameters.
  • the principle of the present invention is not limited to these two structures but also to a structure having three or more stages; You can also.

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Le problème de faible rendement d'une partie terminale libre d'une soufflante centrifuge multi-pales est résolu et le volume global d'alimentation en air est ainsi accru. Une pluralité de premières pales (3) sont agencées de manière annulaire sur une base rotative (1). Une rangée de premières pales (3) présentent des surfaces terminales libres, lesquelles sont inclinées par rapport à l'axe C de rotation comme si les parties terminales circonférentielles extérieures des pales étaient coupées, et un déflecteur annulaire (9) est relié aux surfaces terminales libres inclinées. Une pluralité de secondes pales (11) sont agencées de manière annulaire sur le déflecteur (9). La largeur de chaque seconde pale (11) est apparemment plus petite que celle de la première pale (3), de manière que des écartements (13) existent entre les parties circonférentielles intérieures des secondes pales (11) et les surfaces terminales libres des premières pales (3). Une rangée de secondes pales (11) fait office de soufflante centrifuge aspirant l'air provenant des ouvertures terminales libres (15) se trouvant dans les écartements circonférentiels intérieurs (13) et soufflant l'air vers son côté circonférentiel extérieur. Le déflecteur (9) peut ne pas être prévu. Une pluralité de plaques annulaires distributrices (19) de courant peuvent être fixées aux parties circonférentielles extérieures des pales (3, 11).
PCT/JP1998/002199 1997-05-21 1998-05-20 Soufflante centrifuge multi-pales WO1998053211A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55022898A JP4269092B2 (ja) 1997-05-21 1998-05-20 多翼遠心ファン

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Application Number Priority Date Filing Date Title
JP14858797 1997-05-21
JP9/148587 1997-05-21

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WO1998053211A1 true WO1998053211A1 (fr) 1998-11-26

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2386927A (en) * 2002-02-20 2003-10-01 Electrolux Professional Spa Radial fan with inclined blades
JP2005536869A (ja) * 2002-05-31 2005-12-02 イェー・ファン・デル・ウェルフ・ホールディング・ベスローテン・フェンノートシャップ 電気及び／又は電子部品特にコンピュータ機器の冷却における又はそれに関する改良
WO2006087829A1 (fr) * 2005-02-18 2006-08-24 Nidec Copal Electronics Corporation Soufflante
WO2008075467A1 (fr) * 2006-12-18 2008-06-26 Ihi Corporation Grille d'aubes de compresseur axial
JP2009097448A (ja) * 2007-10-17 2009-05-07 Rokugo Mfg Co Ltd ラジアルファン
JP2012107561A (ja) * 2010-11-17 2012-06-07 Toshiba Home Technology Corp ファン
EP2781761A1 (fr) * 2013-03-20 2014-09-24 Samsung Electronics Co., Ltd. Ventilateur centrifuge et climatiseur l'utilisant
WO2018138808A1 (fr) * 2017-01-25 2018-08-02 三菱電機株式会社 Soufflante centrifuge

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JPS6087397U (ja) * 1983-11-22 1985-06-15 カルソニックカンセイ株式会社 多翼ファン装置
JPH04179899A (ja) * 1990-11-14 1992-06-26 Matsushita Electric Ind Co Ltd 電動送風機
JPH05240190A (ja) * 1992-03-03 1993-09-17 Hitachi Ltd 遠心ファン
JPH05321891A (ja) * 1992-05-21 1993-12-07 Matsushita Seiko Co Ltd 多翼ファン
JPH06257595A (ja) * 1993-03-05 1994-09-13 Hitachi Ltd 遠心ファン及びその製造方法

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JP3193222B2 (ja) * 1994-02-22 2001-07-30 東芝キヤリア株式会社 多翼送風機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6087397U (ja) * 1983-11-22 1985-06-15 カルソニックカンセイ株式会社 多翼ファン装置
JPH04179899A (ja) * 1990-11-14 1992-06-26 Matsushita Electric Ind Co Ltd 電動送風機
JPH05240190A (ja) * 1992-03-03 1993-09-17 Hitachi Ltd 遠心ファン
JPH05321891A (ja) * 1992-05-21 1993-12-07 Matsushita Seiko Co Ltd 多翼ファン
JPH06257595A (ja) * 1993-03-05 1994-09-13 Hitachi Ltd 遠心ファン及びその製造方法

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2386927A (en) * 2002-02-20 2003-10-01 Electrolux Professional Spa Radial fan with inclined blades
JP2005536869A (ja) * 2002-05-31 2005-12-02 イェー・ファン・デル・ウェルフ・ホールディング・ベスローテン・フェンノートシャップ 電気及び／又は電子部品特にコンピュータ機器の冷却における又はそれに関する改良
WO2006087829A1 (fr) * 2005-02-18 2006-08-24 Nidec Copal Electronics Corporation Soufflante
WO2008075467A1 (fr) * 2006-12-18 2008-06-26 Ihi Corporation Grille d'aubes de compresseur axial
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KR102143389B1 (ko) 2013-03-20 2020-08-28 삼성전자주식회사 원심팬 및 이를 포함하는 공기조화기
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