WO1995032363A1 - Carter de soufflante - Google Patents

Carter de soufflante Download PDF

Info

Publication number
WO1995032363A1
WO1995032363A1 PCT/US1995/006925 US9506925W WO9532363A1 WO 1995032363 A1 WO1995032363 A1 WO 1995032363A1 US 9506925 W US9506925 W US 9506925W WO 9532363 A1 WO9532363 A1 WO 9532363A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
housing member
blower assembly
groove
periphery
Prior art date
Application number
PCT/US1995/006925
Other languages
English (en)
Inventor
Richard E. Swin, Jr.
Original Assignee
Tec Air, Inc.
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 Tec Air, Inc. filed Critical Tec Air, Inc.
Priority to AU26597/95A priority Critical patent/AU2659795A/en
Publication of WO1995032363A1 publication Critical patent/WO1995032363A1/fr

Links

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
    • F04D29/08—Sealings
    • F04D29/083—Sealings 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

Definitions

  • This patent application relates generally to a housing for a blower assembly, and specifically to a housing incorporating a system for sealing the housing to prevent gasses or liquids from escaping from the interior of the housing or from corroding metal parts of
  • blower assembly and a system for conveniently and efficiently mounting the housing in an application.
  • plastic blower housings are formed by assembling two housing members. The housing, when assembled, directs air flow to and from desired locations.
  • the efficiency of a blower assembly can be determined by comparing the volume of air movement to the amount of energy consumed in generating that air movement. One key factor in this measurement is the amount of flow lost due to leakage. Leakage will reduce the efficiency of the blower assembly. To reduce or eliminate such leakage, the two housing members must be sealed to prevent the escape of internal gasses from the blower housing. Efficiency can also be measured by comparing the volume of space occupied by the blower assembly to the volume of air moved by the blower.
  • blower assemblies also require the housing to be sealed to prevent leakage and to protect corrosion sensitive subassemblies from the corrosive products being moved or exhausted by the blower.
  • furnaces are often equipped with exhaust blowers that draw the combustion by-products through heat
  • the by ⁇ products of combustion contain carbon monoxide, carbon dioxide, and are also corrosive.
  • the cooling of the gasses by drawing the gasses over heat exchangers, also creates corrosive condensation.
  • the blower housing must be sealed to prevent the gasses and condensation from escaping uncontrolled.
  • subassemblies of the blower assembly must either be corrosion resistant or protected from the corrosive environment. Common examples of such
  • subassemblies include metal screws, bolts, nuts and motor shafts. Exposure of these metal parts to corrosives may result in significantly shortening the blower assembly life or
  • stainless steel or other alloys for parts exposed to corrosive environments.
  • stainless steel or other corrosive resistant alloys result in increased cost and difficulty in manufacturing.
  • Another object of this invention is to provide a corrosion resistant blower assembly.
  • Another object of this invention is to provide a high efficiency blower assembly.
  • Another object of this invention is to provide a convenient and efficient system for locating and mounting the blower assembly in its intended application.
  • a blower housing assembly comprising first and second housing members, an inlet, an outlet, an internal impeller, and an electric motor for driving the impeller.
  • the first housing member has a bifurcated tongue extending from the surface at its periphery
  • the second housing member has a corresponding groove extending into the surface at its periphery
  • the bifurcated tongue and the groove are sized to provide contact along the side walls of the tongue and groove when the housing members are assembled, thereby creating an effective seal.
  • the housing includes a plurality of bosses located in spaced relationship around the periphery of the housing, each boss having a hole therein for receiving a threaded fastener for mounting the housing in an application.
  • the bosses are sized to threadably engage the threaded fastener so that it is retained by the housing in preparation of mounting the housing in an application.
  • at least one of the threaded fasteners protrudes from its respective hole to guide the alignment and location of the housing into its intended application.
  • FIG. 1 is a expanded side view of the blower housing assembly incorporating the
  • FIG. 2 is a side view of the blower housing assembly in the assembled state
  • FIG. 3 is a plan view of the inside of the first housing member
  • FIG. 4 is a plan view of the inside of the second housing member
  • FIG. 5 is an enlarged partial sectional view of the second housing member shown in FIG. 1 taken along lines 5-5.
  • FIG. 6 is an enlarged partial sectional view of the first housing member shown in FIG. 1 taken along lines 6-6.
  • FIG. 7 is an enlarged partial sectional view of the blower assembly shown in FIG. 2 taken along lines 7-7.
  • FIG. 8 is an enlarged partial sectional view of the first blower housing member shown in FIG. 12.
  • FIG. 9 is an enlarged sectional view of the cap shown in FIG. 1.
  • FIG. 10 is an enlarged partial sectional view of the second housing member shown in FIG. 4 taken along lines 10-10.
  • FIG. 11 is an enlarged partial sectional view of the first housing member shown in
  • FIG. 3 taken along lines 11-11.
  • FIG. 12 is an alternative embodiment of what is shown in FIG. 8.
  • FIG. 13 is an alternative embodiment of what is shown in FIG. 9.
  • blower housing assembly Referring to FIG. 1, there is shown a blower housing assembly.
  • the housing assembly is generally designated by the number 10.
  • the assembly 10 is formed
  • the assembled housing includes an inlet 11, an outlet 14, and an electric motor 20 for driving an internal impeller 15.
  • First housing member 13 and second housing member 12 are of clam shell design.
  • First housing member 13 includes an inlet 11 for drawing gasses into the housing, motor mounting location 28, and one half of the outlet 14 for exhausting gasses to a vent or exhaust conduit (not shown).
  • Second housing member 12 includes the other half of the outlet 14 which corresponds to and mates with the outlet half of first housing member 13
  • housing members when the housing members are assembled. While in the preferred embodiment both housing members are of clam shell design, it is understood that the clam shell design is not necessary to the invention. In an alternative embodiment, one housing member could be flat or of other suitable configuration. Moreover, it is not necessary to the invention that two housing members be used; in some applications the features and functions of the second housing member
  • Impeller 15 may be of conventional design and is adapted to be mounted onto
  • Impeller 15 includes an axis of rotation, indicated by line A,
  • Impeller 15 also includes a central disk 29 having a plurality of vanes 17 extending from disk 29 that are generally perpendicular to the plane of rotation. Impeller 15 further includes a hub 16 having a bore 18 therein. Bore 18 is adapted to receive motor shaft 21 for removeably mounting impeller 15 to motor 20. Impeller 15 may be secured to shaft 21
  • impeller 15 is secured to shaft 21 by means of a threaded fastener 19 which threadably engages a threaded hole in the free end of shaft 21. The rotation of impeller 15 draws gasses into the ⁇ ausing through inlet 11 and forces gasses out of the housing through outlet 14.
  • the housing also includes a plurality of bosses 60 located in spaced relationship around the periphery of the housing.
  • Each boss 60 has a hole 61 (FIGs. 3, 4) therein for receiving a housing mounting screw 22.
  • threaded fastener 22 may be used to secure the first housing member 13 to the second housing member 12, as
  • FIG. 6 shows a cross-sectional view of the
  • the perimeter of housing member 13 includes, at its periphery, a surface portion 34 having a bifurcated tongue 30 extending therefrom (FIG. 6).
  • Surface 34 may be substantially flat.
  • Tongue 30 is bifurcated including a first lobe 31 and a second lobe 32 separated by a generally V- shaped cutout which ends in a radius 35.
  • Tongue 30 has side walls 33 extending from
  • Tongue 30 extends continuously around the periphery of first housing 13 beginning at one side of outlet 14 and ending at
  • tongue 30 also extends around the periphery of bosses 60.
  • FIG. 5 shows a cross-sectional view of the sealing portion of the second housing member 12. Included at the periphery of housing member 12 is a surface portion 44 having a groove 40 extending therein. Groove 40 includes side
  • Surface 44 may be substantially flat.
  • the perimeter of the housing is sealed to prevent the internal gasses from escaping therefrom.
  • the seal is accomplished by inserting tongue 30 into groove 40.
  • the tongue 30 and groove 40 are sized to create an interference fit between the side walls 33 of the tongue 30 and the side walls 41 of the groove 40.
  • the interference fit ensures that the side walls of the tongue 30 and groove 40 maintain contact over substantially the entire length of the side walls 33 of the tongue 30.
  • the width of base portion 36 of tongue 30 is sized to
  • bifurcated tongue 30 has two separated lobes 31, 32 in its unrestricted or uncompressed state (FIG. 6). However, when tongue 30 is inserted into
  • lobes 31, 32 are forced together (FIG.7). As side walls 33 come into contact with side walls 41, lobes 31, 32 are forced towards one another. The further into groove 40 tongue 30 is inserted, the more lobes 31, 32 are forced together. Contact between side walls 33 and side walls 41 is maintained, in part, by the elastic memory of lobes 31, 32 which naturally forces lobes 31, 32 away from one another and, consequently, into side walls 41 thereby enhancing the seal.
  • Another alternative embodiment includes, the width of base portion 36 of tongue
  • housing members 12 and 13 are attached to each other by means of resilient, non-corrosive, spring clips 24, as shown in FIG. 7. Spring clips 24 apply constant pressure upon housing members 12 and 13 forcing them together. If the atmospheric conditions vary causing the surface contact between
  • tongue 30 and groove 40 terminate prior to the end of the outlet 14. It has been discovered that in applications where the outlet 14 of the blower assembly 10 is connected to a conduit of sufficient length to create head pressure, the gasses and corrosive by-products of combustion can be forced, by the head pressure, into the groove 40 and thereby by-pass the seal and escape from the housing. To prevent this, the preferred embodiment terminates the tongue 30 and groove
  • the first housing member 13 further includes a
  • a circular disk-shaped cap 75 is
  • the inside surface 37 of housing member 13 includes a plurality of recessed portions 70 having side walls 71 and bottom 73. Centered in each respective recessed portion 70 and passing through each respective bottom 73 is holes 25 for mounting the motor 20. Threaded fasteners 22, such as bolts, are used to removeably secure the motor 20 to housing 13. The heads of the fasteners 22 are received within the recessed portion 70 making contact with bottom 73. Side wall 71 has a circumferential ridge 74 extending parallel to bottom 73.
  • the cap 75 has an edge 76 which includes a groove 77 extending around the edge 76 for engaging the ridge 74. When ridge 74 and groove 77 are matingly engaged, cap 75 is secured to housing 13 and fasteners 22 are sealed from the internal environment and its corrosives.
  • a cup-shaped cap 50 is removeably secured to the inside surface 37 of first housing member 13 to seal from the corrosive environment the fasteners 22 (FIG.13).
  • Cap 50 comprises a circular disk of cup-shaped cross-section having an
  • side wall 51 inside defined by side wall 51 , top 54 and feet 53.
  • the side wall 51 angles slightly
  • SUBSTITUTE SHET (RULE 26) outwardly from top 54 towards base 53.
  • a V-shaped rib 52 Located on side wall 51, and extending around the circumference thereof, is a V-shaped rib 52.
  • second housing member 12 has an
  • inlet 11 therein.
  • Inlet 11 can be of any shape, but is typically round as in the preferred embodiment of the present invention.
  • Inlet 11 has a centerline (line C) that is pe ⁇ endicular to the plane of rotation (line B) of impeller 15.
  • inlet centerline is parallel to but spaced away from the axis of rotation (line A) of impeller 15 which is defined by the axis of motor shaft 21.
  • the periphery of housing member 12 is helical having a centerline thereof.
  • the center of inlet 15 is aligned with the axis of rotation (line B) of impeller 15, but is not aligned with the centerline of the helical periphery of housing member 12.
  • blower assembly 10 allows the blower assembly 10 to be used in applications that otherwise might have obstructions preventing the use of a blower assembly having an inlet centered in the housing or aligned with the axis of rotation.
  • the present invention yields greater flexibility in using the blower assembly 10.
  • each housing member 12, 13 include a plurality of bosses 60 located around the periphery of each housing member 12, 13 (FIGs. 3, 4). Within each boss 60 is a hole 61 adapted to receive a threaded fastener 22, such as a self- tapping threaded screw.
  • a threaded fastener 22 such as a self- tapping threaded screw.
  • the diameter of each hole 61 is constant in first housing member 13 is and is sized to allow fastener 22 to pass therrethrough unrestricted.
  • each hole 61 is constant in first housing member 13 is and is sized to allow fastener 22 to pass therrethrough unrestricted.
  • each hole 61 is constant in first housing member 13 is and is sized to allow fastener 22 to pass therrethrough unrestricted.
  • each hole 61 is constant in first housing member 13 is and is sized to allow fastener 22 to pass therrethrough unrestricted.
  • each hole 61 is constant in first housing member 13
  • First part 62 has a tapered diameter beginning with a diameter corresponding to the diameter of hole 61 in the first housing member. The first part 62 continues until hole 61 has a constant diameter; the second part 63. The diameter of the second part 63 is sized to engage the outside diameter
  • housing member 13 In the preferred embodiment, at least one of the respective fasteners 22 protrudes from housing member 12 to facilitate locating, aligning and mounting of the blower assembly in its intended application.
  • fastener 22 may be used to secure
  • the improved sealing system provides a seal with longer life and lower maintenance, that is resistant to temperature and atmospheric variations and that is less expensive to produce.
  • an improved mounting and aligning system has

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

Abstract

Carter pour ensemble soufflante, comprenant des premier et deuxième éléments de carter. Le premier élément de carter comprend une partie d'étanchéité située à sa périphérie et comportant une languette à deux branches s'étendant à partir de sa surface. Le deuxième élément de carter comprend une partie d'étanchéité, également située à sa périphérie, qui correspond à la partie d'étanchéité du premier élément de carter et qui comporte une gorge dans sa surface. La languette à deux branches et la gorge présentent des dimensions telles qu'il se crée un ajustement serré entre elles lorsque les premier et deuxième éléments de carter sont assemblés, ce qui produit un joint d'étanchéité à la périphérie de l'ensemble soufflante. Un moyen de fixation est prévu pour fixer le premier élément de carter au second.
PCT/US1995/006925 1994-05-25 1995-05-25 Carter de soufflante WO1995032363A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU26597/95A AU2659795A (en) 1994-05-25 1995-05-25 Blower housing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24914694A 1994-05-25 1994-05-25
US08/249,146 1994-05-25

Publications (1)

Publication Number Publication Date
WO1995032363A1 true WO1995032363A1 (fr) 1995-11-30

Family

ID=22942229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/006925 WO1995032363A1 (fr) 1994-05-25 1995-05-25 Carter de soufflante

Country Status (2)

Country Link
AU (1) AU2659795A (fr)
WO (1) WO1995032363A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801940A1 (fr) * 1999-12-06 2001-06-08 Valeo Climatisation Installation de chauffage et/ou climatisation presentant un support moteur monte sur un boitier de pulseur
EP1158176A1 (fr) * 2000-05-24 2001-11-28 ebm Werke GmbH & Co. KG Fixation par encliquetage pour carter helicoidal
WO2005095803A1 (fr) * 2004-03-09 2005-10-13 American Standard International Inc. Boitier de ventilateur et procede de montage
EP1591668A1 (fr) * 2004-04-30 2005-11-02 Nidec Shibaura Corporation Ventilateur
USRE40818E1 (en) 2000-08-30 2009-07-07 Gatley Jr William Stuart Blower housing with maximized interior spacing

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879092A (en) * 1957-12-13 1959-03-24 Gen Electric Friction shaft-coupling assembly
DE1056624B (de) * 1958-07-11 1959-05-06 Licentia Gmbh In einer oder in mehreren Achsebenen geteiltes Axialturbinengehaeuse
US3824028A (en) * 1968-11-07 1974-07-16 Punker Gmbh Radial blower, especially for oil burners
US4386868A (en) * 1981-01-12 1983-06-07 Bluver David B Leader pin locking device
US4396309A (en) * 1980-09-15 1983-08-02 Brunswick Corporation Connecting rod cap alignment
US4735551A (en) * 1983-03-19 1988-04-05 Vaillant Gmbh U. Co. Radial blower
US4865517A (en) * 1988-07-11 1989-09-12 Heil-Quaker Corporation Blower with clam shell housing
US5050764A (en) * 1990-03-08 1991-09-24 Pacesetter Infusion, Ltd. Lateral compression sealing system and method of making seal
US5141397A (en) * 1991-01-18 1992-08-25 Sullivan John T Volute housing for a centrifugal fan, blower or the like
US5281092A (en) * 1991-01-18 1994-01-25 Sullivan John T Volute housing for a centrifugal fan, blower or the like
US5380118A (en) * 1992-02-21 1995-01-10 Spindelfabrik Suessen, Schurr, Stahlecker & Grill Gmbh Shaft coupling for bottom cylinders of drafting units on spinning machines

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879092A (en) * 1957-12-13 1959-03-24 Gen Electric Friction shaft-coupling assembly
DE1056624B (de) * 1958-07-11 1959-05-06 Licentia Gmbh In einer oder in mehreren Achsebenen geteiltes Axialturbinengehaeuse
US3824028A (en) * 1968-11-07 1974-07-16 Punker Gmbh Radial blower, especially for oil burners
US4396309A (en) * 1980-09-15 1983-08-02 Brunswick Corporation Connecting rod cap alignment
US4386868A (en) * 1981-01-12 1983-06-07 Bluver David B Leader pin locking device
US4735551A (en) * 1983-03-19 1988-04-05 Vaillant Gmbh U. Co. Radial blower
US4865517A (en) * 1988-07-11 1989-09-12 Heil-Quaker Corporation Blower with clam shell housing
US5050764A (en) * 1990-03-08 1991-09-24 Pacesetter Infusion, Ltd. Lateral compression sealing system and method of making seal
US5141397A (en) * 1991-01-18 1992-08-25 Sullivan John T Volute housing for a centrifugal fan, blower or the like
US5281092A (en) * 1991-01-18 1994-01-25 Sullivan John T Volute housing for a centrifugal fan, blower or the like
US5380118A (en) * 1992-02-21 1995-01-10 Spindelfabrik Suessen, Schurr, Stahlecker & Grill Gmbh Shaft coupling for bottom cylinders of drafting units on spinning machines

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801940A1 (fr) * 1999-12-06 2001-06-08 Valeo Climatisation Installation de chauffage et/ou climatisation presentant un support moteur monte sur un boitier de pulseur
EP1106834A1 (fr) * 1999-12-06 2001-06-13 Valeo Climatisation Montage de moteur sur le boítier d' un ventilateur
JP2001211597A (ja) * 1999-12-06 2001-08-03 Valeo Climatisation 送風機ハウジングに取付けた電動機支持部材を有する暖房または空調装置
EP1158176A1 (fr) * 2000-05-24 2001-11-28 ebm Werke GmbH & Co. KG Fixation par encliquetage pour carter helicoidal
USRE40818E1 (en) 2000-08-30 2009-07-07 Gatley Jr William Stuart Blower housing with maximized interior spacing
US7381028B2 (en) 2003-06-13 2008-06-03 Trane International Inc. Composite air handling blower housing and method of assembly
WO2005095803A1 (fr) * 2004-03-09 2005-10-13 American Standard International Inc. Boitier de ventilateur et procede de montage
EP1591668A1 (fr) * 2004-04-30 2005-11-02 Nidec Shibaura Corporation Ventilateur

Also Published As

Publication number Publication date
AU2659795A (en) 1995-12-18

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