US20160186775A1 - Centrifugal blower - Google Patents

Centrifugal blower Download PDF

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Publication number
US20160186775A1
US20160186775A1 US14/778,577 US201414778577A US2016186775A1 US 20160186775 A1 US20160186775 A1 US 20160186775A1 US 201414778577 A US201414778577 A US 201414778577A US 2016186775 A1 US2016186775 A1 US 2016186775A1
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US
United States
Prior art keywords
side plate
motor
centrifugal blower
flange
casing
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.)
Abandoned
Application number
US14/778,577
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English (en)
Inventor
Akimasa Uehara
Satoshi Ousaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co 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 Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. reassignment PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OUSAKA, SATOSHI, UEHARA, Akimasa
Publication of US20160186775A1 publication Critical patent/US20160186775A1/en
Abandoned legal-status Critical Current

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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
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • 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
    • 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
    • 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
    • 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
    • F04D29/4226—Fan casings
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps

Definitions

  • the present invention relates to centrifugal blowers.
  • the description below shows a structure of a conventional centrifugal blower incorporated in ventilation blowers, such as a duct fan, and in air conditioners.
  • the centrifugal blower is formed as a self-standing structure held by a fan casing alone, and is incorporated in an air conditioner and the like.
  • the fan casing has a rectangular side plate with a flange formed on the four sides of the plate. The flange is formed such that each edge of the four sides is bent and raised from each side of the side plate.
  • the structure increases the strength of the side plate, allowing the centrifugal blower to be fixed as a self-standing structure.
  • Such structured centrifugal blower is directly fixed to an air conditioner and the like.
  • centrifugal blower 101 is formed of casing 102 and impeller 103 built in casing 102 .
  • Casing 102 is formed of side plate 105 having suction opening 104 , scroll 106 , and motor-fixing side plate 108 on which motor 107 is mounted.
  • Impeller 103 is fixed to motor 107 .
  • Centrifugal blower 101 is designed as a self-standing structure held by casing 102 alone.
  • each of side plate 105 and motor-fixing side plate 108 is formed into a rectangle with flange 112 disposed on its four sides.
  • Flange 112 works as a reinforcement rib, which protects side plate 105 and motor-fixing side plate 108 from a warp or deformation in the direction of the plate surfaces and enhances the strength of them.
  • centrifugal blower 101 can be used as a self-standing structure held by casing 102 alone. Such structured centrifugal blower 101 is directly fixed to an air conditioner and the like.
  • FIG. 5 is a top view of a conventional centrifugal blower in a packed state, i.e., shows centrifugal blower 101 in a packed state seen from above.
  • centrifugal blower 101 as shown in FIG. 4 and FIG. 5 , the own weight of motor 107 is commonly supported by motor-fixing side plate 108 .
  • suction opening 104 of the centrifugal blower is faced to bottom 114 of container box 113 so that the motor's own weight applied to motor-fixing side plate 108 is supported by the entire structure of casing 102 .
  • Centrifugal blower 101 has a shape of a cuboid or cube having corners 115 . If blower 101 packaged in the box is accidentally dropped, corners 115 can be damaged by the impact of the drop. To protect corners 115 from the drop impact, buffering area 116 has to be formed between container box 113 and the body of centrifugal blower 101 . The need for buffering area 116 has brought a problem—increase in packaging volume.
  • the centrifugal blower of the present invention contains a casing having a scroll and an impeller incorporated in the casing.
  • the casing has a side plate with a suction opening and a motor-fixing side plate on which the motor is mounted.
  • the impeller is fixed to the motor.
  • Each of the side plate and the motor-fixing side plate has an outer shape of a rectangle with the four corners cut off.
  • centrifugal blower When such formed centrifugal blower is packed in a container box whose bottom has a size approximately the same as the external dimensions of the centrifugal blower, a space is kept between a cut-off part and the container box. That is, the structure eliminates the corners that are easily damaged if the centrifugal blower packaged in the box is accidentally dropped. By virtue of the structure with no need of buffering material at the corners in packing, the package volume will not increase.
  • FIG. 1 is a perspective view of a centrifugal blower of an exemplary embodiment of the present invention.
  • FIG. 2 is a sheet-metal development view of a motor-fixing side plate of the centrifugal blower.
  • FIG. 3 is a top view of the centrifugal blower in a packed state.
  • FIG. 4 is a perspective view of a conventional centrifugal blower.
  • FIG. 5 is a top view of the centrifugal blower in a packed state.
  • FIG. 1 is a perspective view of a centrifugal blower of the exemplary embodiment of the present invention.
  • centrifugal blower 1 has casing 2 and impeller 3 built in casing 2 .
  • Casing 2 has side plate 5 having suction opening 4 , scroll 6 , and motor-fixing side plate 8 on which motor 7 is mounted.
  • Impeller 3 is fixed to the rotation shaft of motor 7 .
  • the rotation of impeller 3 driven by motor 7 allows suction air 9 to flow into casing 2 from suction opening 4 via impeller 3 .
  • the air then blows out of impeller 3 and is pressurized in casing 2 . Having conversion from dynamic pressure to static pressure, the air flows out of discharge opening 10 as discharge air 11 .
  • Each of side plate 5 and motor-fixing side plate 8 has an outer shape, as an anterior view facing suction opening 4 , of a rectangular whose four corners 20 cut off.
  • Side plate 5 and motor-fixing side plate 8 should preferably be disposed such that long sides 12 and short sides 13 of side plate 5 are parallel to those of motor-fixing side plate 8 .
  • long sides 12 and short sides 13 of side plate 5 should be the same as long sides 12 and short sides 13 , respectively, of motor-fixing side plate 8 .
  • Side plate 5 and motor-fixing side plate 8 have an outer shape of octagon.
  • each of side plate 5 and motor-fixing side plate 8 has flange 14 standing upright like a wall on the periphery of the plate.
  • FIG. 2 is a sheet-metal development view of the motor-fixing side plate of the centrifugal blower; specifically, it is a sheet-metal development view of motor-fixing side plate 8 with flange 14 not yet formed.
  • Bend section 15 of FIG. 2 is a line connecting between adjacent edges 20 a of four corners 20 of motor-fixing side plate 8 .
  • bend section 15 of side plate 5 shown in FIG. 1 is a line connecting between adjacent edges 20 a of four corners 20 .
  • Flange 14 is formed parallel to bend section 15 in a manner that each side of the plates is outwardly bent at bend section 15 .
  • Bend section 15 is formed on each long side 12 .
  • Bend section 15 has extended sections 16 extended along each long side 12 on the side of short side 13 . That is, flange 14 has extended sections 16 extended from the both ends of bend section 15 .
  • Flange 14 at short side 13 is so formed that each of extended sections 16 is bent at bend line 15 a and then adjacent two extended sections 16 are overlapped with each other.
  • Flange 14 on short side 13 shown in FIG. 1 is thus completed.
  • Four corners 20 are cut off in the same shape, which allows flange 14 to be easily formed.
  • FIG. 3 is a top view of the centrifugal blower in a packed state of the exemplary embodiment.
  • FIG. 3 shows container box 18 , seen from above, in which centrifugal blower 1 is packed.
  • Centrifugal blower 1 is packed in container box 18 in a manner that motor-fixing side plate 8 places above.
  • Container box 18 has bottom 17 that is approximately the same as the outside dimension of side plate 5 of centrifugal blower 1 shown in FIG. 1 ; specifically, bottom 17 is a little bit larger than the rectangle formed by long sides 12 of side plate 5 .
  • centrifugal blower 1 When centrifugal blower 1 is packed in the box, space 19 is retained between container box 18 and the cut-off of side plate 5 and motor-fixing side plate 8 . When a device in a packed state is dropped down, the most vulnerable part is an angulated section of the device. As shown in FIG. 3 , centrifugal blower 1 has no angulated section and space 19 is formed instead. Space 19 is a buffer against an accidental drop of centrifugal blower 1 in a packed state, working as impact absorption. Container box 18 absorbs the drop impact while deforming, protecting centrifugal blower 1 from damage.
  • long sides 12 of side plate 5 and motor-fixing side plate 8 should preferably be the same in size and be disposed in parallel; similarly, short sides 13 of the two plates should preferably be the same in size and be disposed in parallel.
  • the four sides of container box 18 of FIG. 3 in which centrifugal blower 1 is packed should be the same in size. The structure eliminates limitation on packing positioning centrifugal blower 1 (i.e., eliminates wrong orientation of centrifugal blower 1 in packing), making space 19 for sure.
  • side plate 5 and motor-fixing side plate 8 of the embodiment in FIG. 1 have an outer shape of octagon, the octagonal shape may have rounded-off corners. That is, side plate 5 and motor-fixing side plate 8 may be substantially shaped into an octagon with the corners rounded off.
  • each of side plate 5 and motor-fixing side plate 8 shown in FIG. 1 has eight sides of two pairs of long sides 12 facing each other and two pairs of short sides 13 facing each other, but it is not limited to; each plate may contain more sides, as long as having at least eight.
  • flange 14 at each short side 13 of side plate 5 and motor-fixing side plate 8 shown in FIG. 1 is formed such that adjacent two extended sections 16 are overlapped with each other, but it is not limited to; short side 13 may contain a flange part connected to flange 14 on long side 12 . In that case, the flange part is bent together with flange 14 so as to form flange 14 on short side 13 .
  • flange 14 shown in FIG. 1 is easily formed by bending without an additional component. Further, flange 14 works as a reinforcement rib, which protects side plate 5 and motor-fixing side plate 8 from a warp or deformation in the direction of the plate surfaces.
  • Flange 14 shown in FIG. 2 is formed of extended sections 16 overlapped with each other.
  • the direction in which the force is exerted agrees with the connecting direction of adjacent flange 14 . This increases the strength of flange 14 .
  • the structure increases the strength of side plate 5 and motor-fixing side plate 8 shown in FIG. 1 , allowing centrifugal blower 1 to be fixed as a self-standing structure by casing 2 alone.
  • Such structured centrifugal blower 1 is directly amounted on air conditioners and the like.
  • the structure eliminates the need of buffer material for protecting corners when centrifugal blower 1 is packed, reducing the package volume of the product.
  • the present invention is applicable not only to centrifugal blowers but also to packing of various devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
US14/778,577 2013-03-27 2014-03-19 Centrifugal blower Abandoned US20160186775A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2013065883 2013-03-27
JP2013-065883 2013-03-27
PCT/JP2014/001576 WO2014156070A1 (ja) 2013-03-27 2014-03-19 遠心送風機

Publications (1)

Publication Number Publication Date
US20160186775A1 true US20160186775A1 (en) 2016-06-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US14/778,577 Abandoned US20160186775A1 (en) 2013-03-27 2014-03-19 Centrifugal blower

Country Status (4)

Country Link
US (1) US20160186775A1 (ja)
JP (1) JP6083002B2 (ja)
CN (1) CN105190048B (ja)
WO (1) WO2014156070A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210180612A1 (en) * 2015-08-17 2021-06-17 Pedro Arnulfo Sarmiento Convectors
US20230121923A1 (en) * 2020-01-14 2023-04-20 Ziehl-Abegg Se Support module for a fan and fan having a corresponding support module

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746464A (en) * 1971-12-30 1973-07-17 A Goettl Centrifugal blower assembly
NL1001258C2 (nl) * 1995-09-21 1997-03-25 Ubbink Nederland Bv Inrichting voor mechanische ventilatie.
DE102008053164A1 (de) * 2008-10-24 2010-04-29 Rentschler Reven-Lüftungssysteme GmbH Ventilator für eine Gasreinigungsanlage

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JPS62133998U (ja) * 1986-02-19 1987-08-24
JPH10238802A (ja) * 1997-02-20 1998-09-08 Fujitsu General Ltd 天井埋込形空気調和機
JP3952536B2 (ja) * 1997-05-29 2007-08-01 株式会社デンソー スクロールケーシング
IT1315710B1 (it) * 2000-06-15 2003-03-18 Dab Pumps Spa Struttura di pompa pluristadio.
JP2002109869A (ja) * 2000-09-28 2002-04-12 Nec Corp 精密機器の衝撃緩和方法と精密機器装置
CN2481886Y (zh) * 2001-06-08 2002-03-13 顺德市华威风机制造有限公司 离心风机
JP2005248732A (ja) * 2004-03-01 2005-09-15 Daikin Ind Ltd ドレンポンプ及びそれを備えた空気調和装置
CN201277205Y (zh) * 2008-10-24 2009-07-22 昆明理工大学 降噪离心通风机
JP2012211577A (ja) * 2011-03-31 2012-11-01 Daikin Industries Ltd 遠心送風機及びこれを備えた空気調和機
CN201991836U (zh) * 2011-04-01 2011-09-28 北京金海虹氮化硅有限公司 带保护铁壳的陶瓷泵壳

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746464A (en) * 1971-12-30 1973-07-17 A Goettl Centrifugal blower assembly
NL1001258C2 (nl) * 1995-09-21 1997-03-25 Ubbink Nederland Bv Inrichting voor mechanische ventilatie.
DE102008053164A1 (de) * 2008-10-24 2010-04-29 Rentschler Reven-Lüftungssysteme GmbH Ventilator für eine Gasreinigungsanlage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Copper by Design, "The Smith Custom Copper Sheet Metal Chimney Cap Photo and Description Page", 11/22/2005, p. 4, http://copper-by-design.com/cc/cp/Smith.htm *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210180612A1 (en) * 2015-08-17 2021-06-17 Pedro Arnulfo Sarmiento Convectors
US11525459B2 (en) * 2015-08-17 2022-12-13 Pedro Arnulfo Sarmiento Convectors
US20230071337A1 (en) * 2015-08-17 2023-03-09 Pedro Arnulfo Sarmiento Convectors
US20230121923A1 (en) * 2020-01-14 2023-04-20 Ziehl-Abegg Se Support module for a fan and fan having a corresponding support module

Also Published As

Publication number Publication date
JPWO2014156070A1 (ja) 2017-02-16
CN105190048B (zh) 2018-12-28
JP6083002B2 (ja) 2017-02-22
CN105190048A (zh) 2015-12-23
WO2014156070A1 (ja) 2014-10-02

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Owner name: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:UEHARA, AKIMASA;OUSAKA, SATOSHI;REEL/FRAME:036731/0576

Effective date: 20150707

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION