WO2018163763A1 - Soufflante - Google Patents

Soufflante Download PDF

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Publication number
WO2018163763A1
WO2018163763A1 PCT/JP2018/005607 JP2018005607W WO2018163763A1 WO 2018163763 A1 WO2018163763 A1 WO 2018163763A1 JP 2018005607 W JP2018005607 W JP 2018005607W WO 2018163763 A1 WO2018163763 A1 WO 2018163763A1
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WO
WIPO (PCT)
Prior art keywords
impeller
plate
outer peripheral
side plate
air passage
Prior art date
Application number
PCT/JP2018/005607
Other languages
English (en)
Japanese (ja)
Inventor
真俊 川埼
Original Assignee
サンデン・オートモーティブクライメイトシステム株式会社
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 サンデン・オートモーティブクライメイトシステム株式会社 filed Critical サンデン・オートモーティブクライメイトシステム株式会社
Publication of WO2018163763A1 publication Critical patent/WO2018163763A1/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
    • F04D29/40—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
    • 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

Definitions

  • the present invention relates to a blower used for, for example, a vehicle air conditioner.
  • a fan provided with a cylindrical impeller and a casing in which a spiral air passage is formed on the radially outer side of the impeller accommodated therein is known (for example, Patent Document 1).
  • the casing is provided on a first side plate provided on one end side in the axial direction of the impeller, a second side plate provided on the other end side in the axial direction and formed with an air suction port, and on a radially outer side of the impeller.
  • a space between the first side plate and the second side plate and between the outer peripheral portion of the impeller and the outer peripheral plate is a spiral air passage.
  • a circulating flow is generated in which the air flowing through the spiral air passage flows again from the end portion to the start end side.
  • vortex ventilation path is formed substantially the same over the axial direction of an impeller, it is formed gradually large toward a termination
  • the blower is used in a posture in which the first side plate is directed downward and the second side plate is directed upward, when water such as rainwater flows into the casing through the suction port, the first side plate of the casing Will accumulate on the side.
  • the first lower end of the impeller and the first are not disturbed by the ice generated in the casing.
  • a predetermined gap is formed between the side plates.
  • An object of the present invention is to provide a blower capable of improving the silence by suppressing an increase in the flow velocity of air on the start end side of the spiral air passage.
  • the present invention includes a cylindrical impeller, and a casing in which the impeller is housed and a spiral air passage is formed on the radially outer side of the impeller housed therein.
  • the casing includes a first side plate provided on one end side in the axial direction of the impeller, a second side plate provided on the other end side in the axial direction and formed with an air suction port, and a radially outer side of the impeller.
  • the gap between the outer peripheral portion of the impeller and the outer peripheral plate on the start end side of the spiral air passage is formed larger on the second side plate side than the first side plate side in the axial direction of the impeller.
  • the present invention it is possible to suppress an increase in the flow velocity of the air flowing through the second side plate side at the start end side of the spiral air passage, and thus it is possible to suppress the generation of sound at the start end side of the spiral air passage. It is possible to improve the quietness.
  • the blower 1 of the present invention is a centrifugal blower, and is used as, for example, a blower of a vehicle air conditioner.
  • the blower 1 includes an impeller 10 formed in a cylindrical shape, an electric motor 20 for rotating the impeller 10, and a casing 30 in which the impeller 10 is accommodated. I have.
  • the impeller 10 is arranged at a predetermined interval in the circumferential direction and extends in a cylindrical axial direction, and a substrate 12 provided on one end side in the axial direction. And a rim 13 provided on the other axial end side.
  • the plurality of blades 11 are arranged so as to extend from the radially inner side to the outer side, respectively.
  • Each of the plurality of blades 11 has a radially outer side curved toward one side in the circumferential direction with respect to the radially inner side.
  • the substrate 12 is a disk-shaped member in which one end portions of a plurality of blades 11 are connected to each other on the outer peripheral side at intervals in the circumferential direction.
  • substrate 12 has the overhang
  • the rim 13 is a cylindrical member in which the other end portions of the plurality of blades 11 are connected to each other at intervals in the circumferential direction.
  • the electric motor 20 is disposed in a concave portion on one axial end surface of the substrate 12 on one axial end side of the impeller 10.
  • the rotating shaft 21 is coupled to the central portion in the radial direction of the substrate 12, and rotates the impeller 10 toward one circumferential direction that is the direction in which the blades 11 are curved.
  • the casing 30 includes a first side plate 31 provided on one end side in the axial direction of the impeller 10, a second side plate 32 provided on the other end side in the axial direction of the impeller 10, and a first side plate 31.
  • An outer peripheral plate 33 extending in the circumferential direction of the impeller 10 is provided between the outer peripheral portions of the side plate 31 and the second side plate 32.
  • a motor support hole 31 a for supporting the electric motor 20 in a state where the electric motor 20 is penetrated is provided in a substantially central portion of the first side plate 31.
  • a suction port 34 for sucking air into the casing 30 is provided at a substantially central portion of the second side plate 32.
  • a cover portion 32 a is provided at the edge portion of the suction port 34 of the second side plate 32 so as to surround the other axial end side, the radial inner surface side, and the outer surface side of the rim 13 of the impeller 10.
  • the outer peripheral plate 33 is a spiral whose distance from the rotation shaft of the impeller 10 gradually increases from a predetermined reference position away from the rotation shaft of the impeller 10 toward the rotation direction of the impeller 10.
  • the casing 30 is provided with a discharge port 35 for discharging the air sucked into the casing 30 via the suction port 34.
  • the discharge port 35 is formed at the end of the portion surrounded by the first side plate 31, the second side plate 32, the straight portion 33b, and the extending portion 33d.
  • a discharge ventilation path 37 that communicates the terminal portion of the path 36 and the discharge port 35 is provided.
  • the spiral air passage 36 is between the first side plate 31 and the second side plate 32 and between the outer peripheral part of the impeller 10 and the part located on the spiral part 33a side of the spiral part 33a and the linear part 33b of the outer peripheral board 33. It is provided in between.
  • the spiral air passage 36 gradually increases in the width dimension of the air passage in the radial direction from the starting end portion toward the terminal end portion.
  • the discharge ventilation path 37 is provided between the first side plate 31 and the second side plate 32 and between a portion of the linear portion 33b located on the discharge port 35 side and the extension portion 33d. As shown in FIG. 3, the discharge air passage 37 gradually increases in width in the radial direction from the terminal end of the spiral air passage 36 toward the discharge port 35. Moreover, the discharge ventilation path 37 is partitioned off from the start end side of the spiral ventilation path 36 by the tongue 33c.
  • the gap between the outer peripheral portion of the impeller 10 and the outer peripheral plate 33 on the start end side of the spiral air passage 36 is an interval D1 on the first side plate 31 side in the axial direction of the impeller 10.
  • the distance D2 on the second side plate 32 side is formed larger.
  • the second side plate 32 side is located on the outer side in the radial direction corresponding to the impeller 10 with respect to the first side plate 31 side in the portion forming the start end side of the spiral air passage 36 in the outer peripheral plate 33.
  • an enlarged diameter portion 33 e that projects radially outward with respect to the first side plate 31 side. Is formed.
  • the enlarged diameter portion 33 e is provided between the second side plate 32 and a position corresponding to a substantially central portion of the outer peripheral plate 33 in the axial direction of the impeller 10. Further, as shown in FIG.
  • the enlarged-diameter portion 33e is formed in the rotational direction of the impeller 10 from the tongue portion 33c and the position S of the spiral portion 33a on the radially inner side with the rotational axis of the impeller 10 as the center. It is provided within the range of the first predetermined angle ⁇ 1.
  • the first predetermined angle ⁇ 1 is desirably 120 degrees.
  • the enlarged diameter portion 33 e has the largest projecting dimension at the start end of the spiral air passage 36, and the projecting dimension gradually decreases toward both end portions in the circumferential direction. Be flush with other parts.
  • the enlarged diameter portion 33e includes a step portion 33f that extends radially outward from a portion on the first side plate 31 side in the axial direction of the impeller 10, and an impeller 10 that extends from the radially outer end of the step portion 33f. And a bottom portion 33g extending in the axial direction.
  • the stepped portion 33 f extends from the first side plate 31 side to the second side plate 32 side and radially outward so as to form an angle of the second predetermined angle ⁇ 2 with respect to the axial direction of the impeller 10. Extending diagonally.
  • the second predetermined angle ⁇ 2 is preferably in the range of 30 degrees to 60 degrees.
  • the air outside the casing 30 passes through the suction port 34 provided in the second side plate 32. And sucked into the casing 30.
  • the air sucked into the casing 30 through the suction port 34 flows inward from the other axial end of the impeller 10 and flows out radially from the outer peripheral portion of the impeller 10.
  • the air that has flowed radially from the outer peripheral portion of the impeller 10 flows through the spiral air passage 36 and the discharge air passage 37 of the casing 30 and is discharged from the discharge port 35, and a part of the air is circulated as a spiral air passage. It flows into the starting end side of 36.
  • the circulating flow increases in flow velocity by passing through the start end portion having the smallest width dimension in the spiral air passage 36.
  • a part of the air flowing through the spiral air passage 36 passes through the space between the impeller 10 and the first side plate 31. Increase is suppressed.
  • the suction port 34 is formed in the second side plate 32 on the second side plate 32 side on the start end side of the spiral air passage 36, a space in which air can flow between the impeller 10 and the second side plate 32. Is small. For this reason, almost all the air flows between the outer peripheral portion of the impeller 10 and the outer peripheral plate 33 on the second side plate 32 side on the start end side of the spiral air passage 36.
  • the gap interval D2 between the impeller 10 and the outer peripheral plate 33 is formed larger than the interval D1 on the first side plate 31 side by the enlarged diameter portion 33e. Therefore, an increase in the air flow rate is suppressed.
  • the gap between the outer peripheral portion of the impeller 10 and the outer peripheral plate 33 on the start end side of the spiral air passage 36 is the first side plate 31 side in the axial direction of the impeller 10.
  • the distance D2 on the second side plate 32 side is formed larger than the distance D1.
  • the portion of the outer peripheral plate 33 that forms the start end side of the spiral air passage 36 is located on the second side plate 32 side on the outer side in the radial direction of the impeller 10 than on the first side plate 31 side. Thereby, it becomes possible to change the space
  • a diameter-expanded portion 33e is formed that projects radially outward with respect to the first side plate 31 side.
  • the flow velocity can be reliably reduced by allowing a part of the air flowing through the second side plate 32 side to flow into the enlarged diameter portion 33e on the start end side of the swirl air passage 36, so that the start end of the swirl air passage 36 can be reduced. It is possible to further suppress the generation of sound on the side.
  • the enlarged diameter portion 33e has a stepped portion 33f extending radially outward from the first side plate 31 side adjacent to the axial direction of the outer peripheral plate 33, and the stepped portion 33f extends from the first side plate 31 side to the second side plate 32. It extends diagonally toward the side. Thereby, since the flow of the air flowing through the start end side of the spiral air passage 36 is not easily disturbed by the step portion 33f, it is possible to suppress a decrease in silent performance and a decrease in blowing efficiency.
  • the enlarged diameter portion 33e has a bottom portion 33g extending in the axial direction of the impeller 10 from the radially outer end of the stepped portion 33f.
  • the enlarged diameter portion 33e is provided within a range of 120 degrees from the start end portion to the end portion of the spiral air passage 36 with the axis of the impeller 10 as the center. Thereby, by forming the enlarged diameter portion 33e only in the portion where the width of the spiral air passage 36 is small, the enlargement of the blower 1 is suppressed, and the amount of air flow turbulence caused by the enlarged diameter portion 33e is generated. Can be reduced.
  • the step portion 33 f is provided between the second side plate 32 and a position corresponding to a substantially central portion of the outer peripheral plate 33 in the axial direction of the impeller 10.
  • the clearance gap between the outer peripheral part of the impeller 10 and the outer peripheral board 33 in the start end side of the spiral ventilation path 36 is made by projecting the 2nd side board 32 side of the outer peripheral board 33 to radial direction outer side.
  • interval D1 by the side of the 1st side board 31 was shown, it is not restricted to this. If the gap between the outer peripheral portion of the impeller and the outer peripheral plate on the start end side of the spiral air passage can be made larger on the second side plate side than on the first side plate side, the enlarged diameter portion 33e is formed on the outer peripheral plate.
  • the clearance gap between the outer peripheral part of the impeller 10 and the outer peripheral board 33 in the start end side of the spiral ventilation path 36 is formed by forming the enlarged diameter part 33e in the 2nd side board 32 side of the outer peripheral board 33.
  • the outer peripheral plate 33 may be gradually projected outward in the radial direction from the first side plate 31 side toward the second side plate 32 side.
  • the outer peripheral plate 33 gradually protrudes from the first side plate 31 side toward the second side plate 32 side, and the second side plate 32 side in the axial direction of the impeller 10. It may be formed to extend so as to ensure a large space on the second side plate 32 side on the start end side of the spiral air passage 36.
  • the enlarged-diameter portion 33e having the step portion 33f extending obliquely is shown, but the present invention is not limited to this. For example, as shown in FIG.
  • the stepped portion may be formed to extend in the radial direction so as to ensure a large space on the second side plate 32 side on the start end side of the spiral air passage 36. Moreover, as shown in FIG.7 (d), you may form an enlarged diameter part by the level

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

Abstract

L'invention concerne une soufflante capable d'améliorer le silence en limitant une augmentation du débit d'air du côté d'une extrémité de départ d'un passage spiral de ventilation. Dans une partie d'une plaque périphérique extérieure 33 correspondant au côté d'extrémité de départ du passage spiral 36 de ventilation, un côté de seconde plaque latérale 32 est positionné en dehors d'un côté de première plaque latérale 31 dans le sens du diamètre direction d'un rouet 10. Ainsi, étant donné qu'une augmentation du débit d'air s'écoulant à travers le côté de seconde plaque latérale 32 peut être limitée au niveau du côté d'extrémité de départ du passage spiral 36 de ventilation, la génération de bruit au niveau du côté d'extrémité de départ du passage spiral 36 de ventilation peut être limitée, et le silence peut être amélioré.
PCT/JP2018/005607 2017-03-06 2018-02-09 Soufflante WO2018163763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-041830 2017-03-06
JP2017041830A JP2018145883A (ja) 2017-03-06 2017-03-06 送風機

Publications (1)

Publication Number Publication Date
WO2018163763A1 true WO2018163763A1 (fr) 2018-09-13

Family

ID=63447524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/005607 WO2018163763A1 (fr) 2017-03-06 2018-02-09 Soufflante

Country Status (2)

Country Link
JP (1) JP2018145883A (fr)
WO (1) WO2018163763A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210495A (ja) * 1985-07-08 1987-01-19 Matsushita Electric Ind Co Ltd 送風装置
JP2002339899A (ja) * 2001-03-16 2002-11-27 Denso Corp 遠心式送風機
WO2017022115A1 (fr) * 2015-08-06 2017-02-09 三菱電機株式会社 Soufflante centrifuge, dispositif de climatisation, et dispositif à cycle de réfrigération

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210495A (ja) * 1985-07-08 1987-01-19 Matsushita Electric Ind Co Ltd 送風装置
JP2002339899A (ja) * 2001-03-16 2002-11-27 Denso Corp 遠心式送風機
WO2017022115A1 (fr) * 2015-08-06 2017-02-09 三菱電機株式会社 Soufflante centrifuge, dispositif de climatisation, et dispositif à cycle de réfrigération

Also Published As

Publication number Publication date
JP2018145883A (ja) 2018-09-20

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