US3680974A - Transverse-flow blower and housing - Google Patents

Transverse-flow blower and housing Download PDF

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Publication number
US3680974A
US3680974A US76691A US3680974DA US3680974A US 3680974 A US3680974 A US 3680974A US 76691 A US76691 A US 76691A US 3680974D A US3680974D A US 3680974DA US 3680974 A US3680974 A US 3680974A
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United States
Prior art keywords
blower
cut
section
wheel
housing
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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.)
Expired - Lifetime
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US76691A
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English (en)
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James L Smith
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Lau Inc
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Lau Inc
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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • F04D29/422—Discharge tongues
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/24—Manufacture essentially without removing material by extrusion

Definitions

  • a blower housing for a tangential blower is formed of 56 R f Ct d structural members made essentially of aluminum ex- 1 e erences e trusions.
  • a back member is formed with a cylindrical UNITED STATES PATENTS inside surface and approximates a volute with the blower wheel circumference.
  • a reversible cut-off sec- 3,200,609 8/1965 Laing ..415/54 i provides Selection over air delivery rates.
  • a i 3,209,989 10/1965 ECh ..415/54 blower embodiment uses common extruded end 3,275,224 9/1966 Bush ..415/54 frames 3,308,268 3/1967 Laing ..415/54 1,462,890 7/1923 Taylor ..415/219 8 Claims, 6 Drawing Figures PATENTEDAUE' 1 I972 sum 1 0F 2 m/vs/v TOR JAMES L.
  • the present invention is directed to an improved blower and housing construction having a high degree of dimensional accuracy and more particularly to a housing which is formed essentially of extruded components.
  • a blower housing is provided for a cross-flow blower in which at least the interconnecting scroll back and cut-off sections are formed of extrusions, such as aluminum.
  • the end frames may also be formed of extruded sections. These extrusions may be made to an indefinite length and severed or cut to the desired finished length.
  • the longitudinally extending extruded portions are formed with integral screw-receiving protuberances or lips for ease of direct attachment to the end frames.
  • the construction is one in which the parts are reversible, according to mounting or drive requirements. Further, the end frames are preferably fonned of channel section material so that the side flanges form a convenient means for mounting the blower housing.
  • the attachment lips for the cut-off section may be made somewhat offset or asymmetrical with respect to the geometric center of this extrusion, thus permitting the extrusion to be turned end-for-end to vary the clearance between it and the periphery of the blower wheel to control the output of the blower.
  • the blower may be tailored for a particular use, where a given output or a specific control of blower noise is desired.
  • Another important object of the invention is to provide a blower in which the transverse sections and/or the end frames may be made to an indefinite length and then cut to a desired length.
  • This feature of the invention when applied to a tangential blower, pemiits the blower housing to be made readily to any convenient length according to its desired use.
  • Twin or multiple blowers may readily be assembled on common end frames.
  • a further object of the invention is the provision of a low-cost and structurally rigid housing for a cross-flow blower.
  • FIG. 1 is a perspective view of a blower housing constructed according to this invention showing the blower wheel and drive motor in place;
  • FIG. 2 is a partially broken-away side elevation looking at the exit region generally along the line 2--2 of FIG. 3;
  • FIG. 3 is a transverse section taken generally along the line 3-3 of FIG. 2;
  • FIG. 4 is an end elevation looking at the motor mounting end of the housing and being partially broken away to expose the cut-off section
  • FIG. 5 is an enlarged fragmentary perspective portion of the cut-off section.
  • FIG. 6 is a view similar to FIG. 3 of a modification of the housing for a twin blower.
  • an improved blower housing constructed according to this invention is illustrated generally at 10 as including a pair of spaced apart end frame members 11 and 12 which are connected by a back 14 and a cut-off section 15.
  • a tangential blower wheel 20 is received within the housing and is mounted for rotation, at one end, on a shaded pole electric drive motor 22 and on a suitable bearing 23 mounted on the opposite end frame 11.
  • the wheel 20 may be constructed according to the teachings of Wentling US. Pat. No. 3,385,511 of 1968 and assigned to the assignee of this invention.
  • the end frames 11 and 12 are preferably formed of channel-shaped extruded material, preferably aluminum. These frame members may be made from the same extrusion and thus may be initially formed as an extrusion of indefinite length, and then suitably cut to a rectangle or substantially square size, as needed. However, the end frames may be stamped or molded. Each end piece is formed with a shaft access opening 21 and may be drilled with holes so as to accomodate either the mounting lugs of the motor 22 or the end bearing 23 so that, in this regard, the end frames are interchangeable. Pairs of the frame members may be drilled simultaneously in face-to-face relationship with holes for the purpose of attaching the back 14 and the cut-off section 15. Further, the end flange portions 24 of the end frames 11 and 12 conveniently provide a means by which the housing 10 may be supported and mounted. I
  • the end frames 11 and 12 are supported in spaced apart relation by the back 14 and the cut-off section 15, forming a rigid, box-like structure.
  • the back 14 is formed as an extrusion of indefinite length and then cut to a desired length. Aluminum is preferred although plastics may also be used. It is formed with a smooth semi-cylindrical inner surface 26 and extends arcuately for about When it is mounted between the end plates or frames it forms a scroll-like air-directing surface, and also provides rigid support for the end frames.
  • the outer surface is formed with three pairs of continuously extending lips 30 by means of which the back may be attached to the end frames. For this purpose,
  • self-tapping screws 32 are inserted through the openings in the end frame members and cut their own threads when driven into the semi-circular region defined between the pairs of lips 30.
  • the cut-off section is also formed as an extrusion of indefinite length, and then cut to the same length as the back 14. It is also formed with two sets of the lips 30 by means of which this section is secured between the end frames. Since the section is positioned diagonally opposite the open side of the back 14 it contributes to the strength of the housing 10.
  • the wheel is formed with a radius which is approximately one-half that defined by the inside surface 26 of the back 14. The wheel is not mounted centrally of the end frames 11 and 12 but is mounted in offset relation to the center toward the forward end 34 of the back. In this position, the wheel periphery 35 runs in somewhat closely spaced relation to the inwardly extending end 36 of the section 15, defining a space 37 therewith.
  • the periphery 35 of the wheel 20 defines, with the inner cylindrical surface 26, a region of expanding size leading from the entry region 40 to the exit region 42 OF the blower.
  • This space approximates a volute
  • the curved cylindrical outer surface 44 of the section 15 forms, in effect, a smooth continuation of the volute.
  • the attachment lips 30 of the cut-off-section 15 are not formed centrally but are asymmetrically positioned in such a manner that the end 36 is of a somewhat longer length than the opposite 36 as seen in FIG. 5.
  • end 36 is positioned adjacent to the periphery 35 of the disk 20 and defines a relatively small clearance space 37 therewith.
  • This arrangement is one which will provide the maximum velocity of air for a given rpm of the wheel 20. However, it is accompanied by a somewhat increased noise factor.
  • the noise of the blower can be materially reduced with only a slight reduction in efficiency by turning the section 15 end-for-end so that the lip 36' is the one which provides the cut-off function at the exit region 42.
  • FIG. 4 Such a condition is shown in FIG. 4 in which the space 37' has a slightly greater radial dimension than the space 37 of FIG. 3.
  • a low-cost yet rugged housing is provided. Rigid vinyls, ABS, or other extrudable plastic materials may also be used. Such a housing can be made as desired, to any convenient axial length merely by trimming the parts 14 and 15 to such length. In this manner, transverseflow blowers of varying lengths can be made from a given stock of extruded materials.
  • these parts are secured to the end frame members by the self-tapping fasteners 32, a dimensionally arcuate box-like rugged structure is formed which is highly resistent to deformation and twisting loads.
  • extruded parts permits ease of attaining dimensional accuracy in production, while substantially lowering production costs as compared to a sheet metal construction.
  • the end frames 12 are preferably formed of extruded material, and this readily permits the use of end frame material of an extended length for the purpose of accomodating two or more blowers on common end frames.
  • FIG. 6 shows a twin tangential blower housing in which a pair of back members 140 and 14b are positioned in back-to-back manner on a common elongated end frame 12.
  • Corresponding cut-off sections 15a and 15b are associated with the back members to form a twinoutlet blower housing.
  • the back members and cut-off sections are the same as those previously described and are merely turned end-for-end with respect to each other, and are secured to the elongated end frame 12' in the same manner as previously described in connection with FIGS. l-5.
  • Separate wheels 20, bearings 23 and drive motor 22 are used, as above, to form a twin blower.
  • the arrangement illustrated provides a generally common inlet region 40' and a pair of opposite exit regions 42a and 42b.
  • the inlet region can be separated into two regions if desired. It is obvious that the same parts can be arranged between the end frames to provide 180 opposed inlets and a generally common exit region, as desired.
  • a tangential blower comprising a pair of axially spaced apart end frames, an intermediate curved back member positioned between said frames and having a semi-cylindrical inside surface, a tangential blower wheel mounted for rotation between said end frames and having a radius less than that of said back member and being mounted with its axis of rotation offset forwardly from the center of curvature of said back member defining with said back member a space approximating a volute including an entry region leading arcuately to an exit region, and an arcuate cut-off section extending between said end frames having means defining an inner lip positioned closely adjacent the periphery of said wheel at said exit region for one flow condition through the blower and means for reversing the arcuate cutoff section to give a second flow condition through the blower.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US76691A 1970-09-30 1970-09-30 Transverse-flow blower and housing Expired - Lifetime US3680974A (en)

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US7669170A 1970-09-30 1970-09-30

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JP (1) JPS4939562B1 (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246325A4 (en) * 1985-11-11 1988-12-15 Hosiden Electronics Co CROSS FLOW COOLING FAN.
FR2669970A1 (fr) * 1990-12-04 1992-06-05 Airtechnic Unite de ventilation a double flux, notamment pour compartiment technique.
US5147012A (en) * 1990-08-21 1992-09-15 Dresser Industries, Inc. Discharge silencing apparatus
USD362058S (en) 1993-04-02 1995-09-05 Aquanar Marketing & Design Inc. Combined ceiling fan and lights
US5525107A (en) * 1994-09-21 1996-06-11 Accutek Products Corp. Indoor hanging window fan
US20090113744A1 (en) * 2007-10-15 2009-05-07 Lg Electronics Inc. Clothing dryer
US20140369808A1 (en) * 2013-06-17 2014-12-18 Jin Yih Shyang Enterprise Co., Ltd. Modular cross-flow-fan device
WO2020167873A1 (en) * 2019-02-11 2020-08-20 Cleva Technologies, Llc Mobile climate control assembly and method of use
US11460032B2 (en) * 2017-10-19 2022-10-04 Gree Electric Appliances (Wuhan) Co., Ltd Cross-flow impeller mounting structure, air duct component and apparatus having cross-flow impeller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6445751A (en) * 1987-08-12 1989-02-20 Toa Gosei Chem Ind Flash-setting agent for cement

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1462890A (en) * 1920-04-30 1923-07-24 Taylor Harvey Birchard Spiral casing
US1705200A (en) * 1928-08-02 1929-03-12 American Blower Corp Stiffening member on sirocco fan casing
US3150816A (en) * 1962-09-05 1964-09-29 Laing Nikolaus Cross-flow fluid machine having counterrotating rotors
GB986096A (enrdf_load_stackoverflow) * 1960-03-11 1965-03-17 Firth Cleveland Limited
GB997196A (en) * 1960-09-08 1965-07-07 Firth Cleveland Ltd Improvements relating to blowers
CH397138A (de) * 1958-12-09 1965-08-15 Firth Cleveland Ltd Querstrompumpe zur Erzeugung statischen Druckes
US3200609A (en) * 1964-04-15 1965-08-17 Laing Vortex Inc Heat exchange apparatus and air conditioner units incorporating such apparatus
US3209989A (en) * 1960-01-18 1965-10-05 Eck Bruno Cross flow fan
US3275224A (en) * 1964-03-04 1966-09-27 Firth Cleveland Ltd Ventilating fans
US3308268A (en) * 1959-04-15 1967-03-07 Laing Nikolaus Portable hair dryers
US3313342A (en) * 1962-04-19 1967-04-11 Laing Nikolaus Blowers

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1462890A (en) * 1920-04-30 1923-07-24 Taylor Harvey Birchard Spiral casing
US1705200A (en) * 1928-08-02 1929-03-12 American Blower Corp Stiffening member on sirocco fan casing
CH397138A (de) * 1958-12-09 1965-08-15 Firth Cleveland Ltd Querstrompumpe zur Erzeugung statischen Druckes
US3308268A (en) * 1959-04-15 1967-03-07 Laing Nikolaus Portable hair dryers
US3209989A (en) * 1960-01-18 1965-10-05 Eck Bruno Cross flow fan
GB986096A (enrdf_load_stackoverflow) * 1960-03-11 1965-03-17 Firth Cleveland Limited
GB997196A (en) * 1960-09-08 1965-07-07 Firth Cleveland Ltd Improvements relating to blowers
US3313342A (en) * 1962-04-19 1967-04-11 Laing Nikolaus Blowers
US3150816A (en) * 1962-09-05 1964-09-29 Laing Nikolaus Cross-flow fluid machine having counterrotating rotors
US3275224A (en) * 1964-03-04 1966-09-27 Firth Cleveland Ltd Ventilating fans
US3200609A (en) * 1964-04-15 1965-08-17 Laing Vortex Inc Heat exchange apparatus and air conditioner units incorporating such apparatus

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246325A4 (en) * 1985-11-11 1988-12-15 Hosiden Electronics Co CROSS FLOW COOLING FAN.
US5147012A (en) * 1990-08-21 1992-09-15 Dresser Industries, Inc. Discharge silencing apparatus
FR2669970A1 (fr) * 1990-12-04 1992-06-05 Airtechnic Unite de ventilation a double flux, notamment pour compartiment technique.
EP0489672A1 (fr) * 1990-12-04 1992-06-10 Air Technic Unité de ventilation à double flux, notamment pour compartiment technique
USD362058S (en) 1993-04-02 1995-09-05 Aquanar Marketing & Design Inc. Combined ceiling fan and lights
US5525107A (en) * 1994-09-21 1996-06-11 Accutek Products Corp. Indoor hanging window fan
US20090113744A1 (en) * 2007-10-15 2009-05-07 Lg Electronics Inc. Clothing dryer
US20140369808A1 (en) * 2013-06-17 2014-12-18 Jin Yih Shyang Enterprise Co., Ltd. Modular cross-flow-fan device
US11460032B2 (en) * 2017-10-19 2022-10-04 Gree Electric Appliances (Wuhan) Co., Ltd Cross-flow impeller mounting structure, air duct component and apparatus having cross-flow impeller
WO2020167873A1 (en) * 2019-02-11 2020-08-20 Cleva Technologies, Llc Mobile climate control assembly and method of use
CN113614382A (zh) * 2019-02-11 2021-11-05 克莱瓦技术有限责任公司 移动式气候控制组件及使用方法
AU2020222977B2 (en) * 2019-02-11 2023-02-02 Cleva Technologies, Llc Mobile climate control assembly and method of use
CN113614382B (zh) * 2019-02-11 2024-06-11 克莱瓦技术有限责任公司 移动式气候控制组件

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Publication number Publication date
JPS4939562B1 (enrdf_load_stackoverflow) 1974-10-26

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