US3726611A - Fan unit designed as an air treatment device in an air conditioning aggregate - Google Patents

Fan unit designed as an air treatment device in an air conditioning aggregate Download PDF

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Publication number
US3726611A
US3726611A US00145349A US3726611DA US3726611A US 3726611 A US3726611 A US 3726611A US 00145349 A US00145349 A US 00145349A US 3726611D A US3726611D A US 3726611DA US 3726611 A US3726611 A US 3726611A
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Prior art keywords
fan
motor
framework
aggregate
ejection aperture
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US00145349A
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L Astrom
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Svenska Flaktfabriken AB
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Svenska Flaktfabriken AB
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • 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

  • ABSTRACT An air conditioning aggregate with a built-in fan unit comprising a radial fan, an electric drive motor and a power transmission therebetween, the radial fan being secured with its plane-parallel end walls in a framework of the air conditioning aggregate, the greatest length dimension of said frame work extending in a direction perpendicular to the ejection aperture of the fan, the electric drive motor being mounted on one side of the fan housing of the radial fan, while the power belt transmission extends between rope-belt pulleys on the two parallel axles of fan and motor.
  • This invention relates to a fan unit intended to be built-in as an air treatment device within the casing of an air conditioning aggregate and comprising a radial fan, an electromotor and a power transmission therebetween.
  • Such air treatment devices are usually provided with a belt-driven double-throat radial fan built-in in direct connection to other air treatment components in such a manner, that the casingacts as a suction box for the fan. This necessitates that it must be possible to direct the fan outlet not only in the longitudinal direction of the device, but also upwardly and downwardly.
  • the invention has as its object a new and improved embodiment of a fan unit in which the aforesaid disadvantage is eliminated, partly by securing the radial fan with its plane-parallel end walls in a frame-work extending with its greatest length dimension corresponding to the depth of the fan housing, counted from the ejection aperture and partly by mounting the electric drive motor directly on one side of the housing of the radial fan, and by arranging a power transmission in the form of a belt transmission extending between ropebelt pulleys on the two'parallel axles of fan and motor.
  • the electric drive motor of the fan unit is mounted on the plane part of the fan housing.
  • both the radial fan and the electric drive motor are provided with vertical axles.
  • the above described unit is turned 90 upwardly r downwardly about an imaginary axis of perpendicular orientationrelative to the longitudinal direction of the fan unit.
  • FIGS. la, lb, and 1c are schematic views of a fan unit of the novel construction arranged with a longitudinally, an upwardly, and a downwardly directed fan outlet respectively;
  • FIG. 2 shows an exemplifying embodiment of a fan unit with a straight-blowing or longitudinally-directed fan outlet.
  • the conditioning device is designated by 1.
  • Said device comprises a fan 2, an electric drive motor 4 and a power transmission 5 shown as a V-belt stretched between two V-belt pulleys 10, 11 mounted on the end of the vertical axle V of the motor and the vertical axle V" of the radial fan 2a.
  • the housing ofthe fan 2 has parallel end walls 6 and 7, each having an inlet throat for admitting air to the center of the fan rotor 2a, and an involute wall surrounding said rotor and terminating in a generally tangential plane extension 8 defining one side of the outlet throat or ejection aperture 9.
  • an open framework 3 is provided with its greatest length dimension L corresponding to the depth of the involute fan housing, counted from the ejection aperture 9.
  • a standard 12 mounts the fan 2, drive motor 4 and transmission 5 as a unitary aggregate within the open-sided framework 3, as shown.
  • FIG. 2 shows the basic design with a straightblowing fan, i.e., the fan unit blows the ventilation air treated in other parts of the air conditioning device longitudinally in the direction of the arrows.
  • the electric drive motor is not mounted directly on the plane portion 8 of the fan housing, but instead on a bracket 4a, which by a displaceable bar 4b can be moved on a plate 4d fastened adjacent the plane portion 8 of the fan housing for the fan unit.
  • the distance between the axles V and V" can be changed in known manner by the screws 40.
  • H H designates the imaginary axis about which the conditioning aggregate is turned within the framework 3 in cases when an upwardly or downwardly directed ejection from the fan 2 is intended.
  • the ejection aperture 9 remains in its center position between the front and the back of the framework, and the motor 4 remains readily accessible for service at the front side of the open framework.
  • a fan unit intended to be built-in within the casing of an air conditioning aggregate as an air treatment device comprising a radial fan, an electric drive motor and a power transmission therebetween, said radial fan comprising a fan rotor having radial blades disposed circumferentially there-about a pair of plane parallel end walls each having an inlet throat therein, said rotary fan rotor having its circumferential blades mounted between said end walls of circumscribing said inlet throats, and an involute wall partially surrounding said rotor and terminating in a generally tangential plane extension defining oneside of the ejection aperture of said fan, the improvement wherein said unit includes an open-sided framework, the length dimension of which corresponds to the depth of the fan housing counted along said parallel end walls from the ejection aperture, means mounting the electric drive motor at one side of the fan housing adjacent said plane extension with the axle of the motor parallel to the axle of the fan rotor, the power transmission being in the form of a belt transmission extending between rope-bel
  • a fan unit according to claim 1 characterized in that the fan, motor and transmission aggregate is tion aperture is positioned centrally between the front and back sides of said framework, the motor axle being positioned forwardly of the vertical longitudinal center plane of the casing and the fan axle being positioned rearwardly of said longitudinal center plane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Ventilation (AREA)

Abstract

An air conditioning aggregate with a built-in fan unit comprising a radial fan, an electric drive motor and a power transmission therebetween, the radial fan being secured with its plane-parallel end walls in a framework of the air conditioning aggregate, the greatest length dimension of said frame work extending in a direction perpendicular to the ejection aperture of the fan, the electric drive motor being mounted on one side of the fan housing of the radial fan, while the power belt transmission extends between rope-belt pulleys on the two parallel axles of fan and motor.

Description

United States Patent [191 Astrom [54] FAN UNIT DESIGNED AS AN AIR TREATMENT DEVICE IN AN AIR CONDITIONING AGGREGATE [75] Inventor: Lennart Astrom, 130 11 Saltsjo- Duvnas, Sweden [73] Assignee: Aktiebolaget Svenska Flaktfabriken,
Nacka, Sweden [22] Filed: May 20, 1971 [21] App1.No.: 145,349
[30] Foreign Application Priority Data May 29, 1970 Sweden ..7500/7O [52] US. Cl ..417/423 R, 415/126, 415/219 [51] Int. Cl ..F04b 17/00 [58] Field of Search ..4l7/423 R, 424;
[56] 'References Cited UNITED STATES PATENTS Euwermn ..417/423 R [451 Apr. 10, 1973 2,464,473 3/1949 Wessel ..4l7/423 R 2,693,914 11/1954 Payne 2,282,373 5/1942 Minkler et a1 ..4l7/423 R X FOREIGN PATENTS OR APPLICATIONS 610,021 lO/l926 France ..4lS/l26 Primary Examiner-C. J. Husar Attorney1-Iowson & Howson [5 7] ABSTRACT An air conditioning aggregate with a built-in fan unit comprising a radial fan, an electric drive motor and a power transmission therebetween, the radial fan being secured with its plane-parallel end walls in a framework of the air conditioning aggregate, the greatest length dimension of said frame work extending in a direction perpendicular to the ejection aperture of the fan, the electric drive motor being mounted on one side of the fan housing of the radial fan, while the power belt transmission extends between rope-belt pulleys on the two parallel axles of fan and motor.
3 Claims, 4 Drawing Figures PATENTEDAPRI 1 3', 726,61 1
sum 1 BF 2 Fig. la
Fig. lb
Fig. 7c
Lsgmg KT A 51123" IN VEN TOR.
PATENTEU APR] 0 I975 SHEET 2 OF 2 INVENTOR. LEWARr Aswan BY WWW FAN UNIT DESIGNED AS AN AIR TREATMENT DEVICE IN AN AIR CONDITIONING AGGREGATE This invention relates to a fan unit intended to be built-in as an air treatment device within the casing of an air conditioning aggregate and comprising a radial fan, an electromotor and a power transmission therebetween.
Such air treatment devices are usually provided with a belt-driven double-throat radial fan built-in in direct connection to other air treatment components in such a manner, that the casingacts as a suction box for the fan. This necessitates that it must be possible to direct the fan outlet not only in the longitudinal direction of the device, but also upwardly and downwardly.
In a conventional construction the motor and the fan were placed one after the other in the longitudinal direction of the device, and the horizontal axles were oriented perpendicularly to said direction. In this conventional construction the three aforementioned different outlet directions are obtained in such a way that the fan is turned while the fan axle maintains its horizontal orientation. The projection of the fan onto a plane perpendicular to the longitudinal direction of the device is substantially smaller than the cross-section determined by the design of the remaining components.
In the above described construction, thus, valuable space is lost for the motor in the longitudinal direction of the device, in spite of the fact that sufficient motor space is available in the plane of the fan location.
The invention has as its object a new and improved embodiment of a fan unit in which the aforesaid disadvantage is eliminated, partly by securing the radial fan with its plane-parallel end walls in a frame-work extending with its greatest length dimension corresponding to the depth of the fan housing, counted from the ejection aperture and partly by mounting the electric drive motor directly on one side of the housing of the radial fan, and by arranging a power transmission in the form of a belt transmission extending between ropebelt pulleys on the two'parallel axles of fan and motor.
According to the preferred embodiment, the electric drive motor of the fan unit is mounted on the plane part of the fan housing. When arranged to eject the air longitudinally from the device both the radial fan and the electric drive motor are provided with vertical axles. When arranged either with an upwardly or with a downwardly directed fan outlet, the above described unit is turned 90 upwardly r downwardly about an imaginary axis of perpendicular orientationrelative to the longitudinal direction of the fan unit.
The invention is described in greater detail below, with reference to the accompanying drawings, in which FIGS. la, lb, and 1c are schematic views of a fan unit of the novel construction arranged with a longitudinally, an upwardly, and a downwardly directed fan outlet respectively; and
FIG. 2 shows an exemplifying embodiment of a fan unit with a straight-blowing or longitudinally-directed fan outlet.
Referring to the drawing, FIG. 2, the conditioning device is designated by 1. Said device comprises a fan 2, an electric drive motor 4 and a power transmission 5 shown as a V-belt stretched between two V- belt pulleys 10, 11 mounted on the end of the vertical axle V of the motor and the vertical axle V" of the radial fan 2a. The housing ofthe fan 2 has parallel end walls 6 and 7, each having an inlet throat for admitting air to the center of the fan rotor 2a, and an involute wall surrounding said rotor and terminating in a generally tangential plane extension 8 defining one side of the outlet throat or ejection aperture 9.
According to the invention, an open framework 3 is provided with its greatest length dimension L corresponding to the depth of the involute fan housing, counted from the ejection aperture 9. A standard 12 mounts the fan 2, drive motor 4 and transmission 5 as a unitary aggregate within the open-sided framework 3, as shown. FIG. 2 shows the basic design with a straightblowing fan, i.e., the fan unit blows the ventilation air treated in other parts of the air conditioning device longitudinally in the direction of the arrows.
In the embodiment shown, the electric drive motor is not mounted directly on the plane portion 8 of the fan housing, but instead on a bracket 4a, which by a displaceable bar 4b can be moved on a plate 4d fastened adjacent the plane portion 8 of the fan housing for the fan unit. For adjusting the tension of the power transmission 5, the distance between the axles V and V" can be changed in known manner by the screws 40.
H H" designates the imaginary axis about which the conditioning aggregate is turned within the framework 3 in cases when an upwardly or downwardly directed ejection from the fan 2 is intended. As shown in FIGS. 1a, 1b, and 1c, when the aggregate is turned about the axis H H", the ejection aperture 9 remains in its center position between the front and the back of the framework, and the motor 4 remains readily accessible for service at the front side of the open framework.
What is claimed is:
l. A fan unit intended to be built-in within the casing of an air conditioning aggregate as an air treatment device comprising a radial fan, an electric drive motor and a power transmission therebetween, said radial fan comprising a fan rotor having radial blades disposed circumferentially there-about a pair of plane parallel end walls each having an inlet throat therein, said rotary fan rotor having its circumferential blades mounted between said end walls of circumscribing said inlet throats, and an involute wall partially surrounding said rotor and terminating in a generally tangential plane extension defining oneside of the ejection aperture of said fan, the improvement wherein said unit includes an open-sided framework, the length dimension of which corresponds to the depth of the fan housing counted along said parallel end walls from the ejection aperture, means mounting the electric drive motor at one side of the fan housing adjacent said plane extension with the axle of the motor parallel to the axle of the fan rotor, the power transmission being in the form of a belt transmission extending between rope-belt pulleys on the two parallel axles, and a standard adapted to mount said fan, motor and transmission aggregate within said open-sided framework with their axles vertical to positionsaid ejection aperture horizontal longitudinally of said framework, and said motor at the front side of the framework.
2. A fan unit according to claim 1 characterized in that the fan, motor and transmission aggregate is tion aperture is positioned centrally between the front and back sides of said framework, the motor axle being positioned forwardly of the vertical longitudinal center plane of the casing and the fan axle being positioned rearwardly of said longitudinal center plane.

Claims (3)

1. A fan unit intended to be built-in within the casing of an air conditioning aggregate as an air treatment device comprising a radial fan, an electric drive motor and a power transmission therebetween, said radial fan comprising a fan rotor having radial blades disposed circumferentially there-about a pair of plane parallel end walls each having an inlet throat therein, said rotary fan rotor having its circumferential blades mounted between said end walls of circumscribing said inlet throats, and an involute wall partially surrounding said rotor and terminating in a generally tangential plane extension defining one side of the ejection aperture of said fan, the improvement wherein said unit includes an open-sided framework, the length dimension of which corresponds to the depth of the fan housing counted along said parallel end walls from the ejection aperture, means mounting the electric drive motor at one side of the fan housing adjacent said plane extension with the axle of the motor parallel to the axle of the fan rotor, the power transmission being in the form of a belt transmission extending between rope-belt pulleys on the two parallel axles, and a standard adapted to mount said fan, motor and transmission aggregate within said open-sided framework with their axles vertical to position said ejection aperture horizontal longitudinally of said framework, and said motor at the front side of the framework.
2. A fan unit according to claim 1 characterized in that the fan, motor and transmission aggregate is adapted to be turned 90* either upwardly or downwardly about a horizontal, imaginary axis of perpendicular orientation relative to the longitudinal direction of the fan unit, to thereby position said ejection aperture vertical and said motor at said front side of the framework.
3. A fan unit according to claim 1 wherein said ejection aperture is positioned centrally between the front and back sides of said framework, the motor axle being positioned forwardly of the vertical longitudinal center plane of the casing and the fan axle being positioned rearwardly of said longitudinal center plane.
US00145349A 1970-05-29 1971-05-20 Fan unit designed as an air treatment device in an air conditioning aggregate Expired - Lifetime US3726611A (en)

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JP (1) JPS5128848B1 (en)
AT (1) AT313529B (en)
BE (1) BE767531A (en)
CA (1) CA947732A (en)
CH (1) CH534812A (en)
CS (1) CS167930B2 (en)
DE (1) DE2123289A1 (en)
FR (1) FR2093854A5 (en)
GB (1) GB1354613A (en)
NL (1) NL7107244A (en)
PL (1) PL76416B1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950835A (en) * 1974-10-02 1976-04-20 Carrier Corporation Fan assembly and method of manufacturing same
US3977467A (en) * 1973-05-18 1976-08-31 Northrup Jr Leonard L Air conditioning module
US4232994A (en) * 1977-01-14 1980-11-11 Hitachi, Ltd. Centrifugal turbomachine
US4787818A (en) * 1987-07-27 1988-11-29 Jenn Industries, Inc. Centrifugal blower assembly
US5738167A (en) * 1996-02-08 1998-04-14 Aaon, Inc. Blower fan housing assembly
US5827044A (en) * 1997-03-26 1998-10-27 Yazici; Muammer Fan system with variable air volume control
US6190140B1 (en) * 1998-03-18 2001-02-20 Triangle Engineering Of Arkansas, Inc. Belt-driven fan with tension preserving winged motor mounting
WO2001098670A2 (en) * 2000-06-23 2001-12-27 F.W. Carduck Gmbh Radial ventilator
EP1431679A2 (en) * 2002-12-16 2004-06-23 Luis Capdevila, S.A. Ventilation box
EP1657451A1 (en) * 2004-11-12 2006-05-17 Hans Östberg A duct fan
US20110229358A1 (en) * 2010-03-22 2011-09-22 Gunter Streng Ventilator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8516003D0 (en) * 1985-06-25 1985-07-31 Cartem Ltd Mobile storage tank
JPS62189587U (en) * 1986-05-21 1987-12-02
CA1268162A (en) * 1986-07-09 1990-04-24 Christophe Kees Josef Asselbergs Portable fan device for forced air heating
CA1268161A (en) * 1986-07-09 1990-04-24 Christophe Kees Josef Asselbergs Portable fan device for forced air heating
FR2664539B1 (en) * 1990-07-11 1994-07-08 Valeo AIR PULSE DEVICE FOR A HEATING-VENTILATION SYSTEM OF A MOTOR VEHICLE.
DE4104965C2 (en) * 1991-02-18 1995-06-29 Bosch Siemens Hausgeraete Housing for a fan
FR2710700B1 (en) * 1993-09-27 1995-12-01 Abb Flakt Layout of a motor-fan unit mounted in a box.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR610021A (en) * 1926-01-27 1926-08-28 Hydraulic swivel turbine
US2139262A (en) * 1936-09-01 1938-12-06 American Car & Foundry Co Reversible flow air conditioning system
US2282373A (en) * 1938-12-01 1942-05-12 Westinghouse Electric & Mfg Co Air conditioning apparatus
US2464473A (en) * 1947-04-28 1949-03-15 Utility Appliance Corp Blower installation
US2693914A (en) * 1951-04-11 1954-11-09 El Roy L Payne Hot air furnace control

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR610021A (en) * 1926-01-27 1926-08-28 Hydraulic swivel turbine
US2139262A (en) * 1936-09-01 1938-12-06 American Car & Foundry Co Reversible flow air conditioning system
US2282373A (en) * 1938-12-01 1942-05-12 Westinghouse Electric & Mfg Co Air conditioning apparatus
US2464473A (en) * 1947-04-28 1949-03-15 Utility Appliance Corp Blower installation
US2693914A (en) * 1951-04-11 1954-11-09 El Roy L Payne Hot air furnace control

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977467A (en) * 1973-05-18 1976-08-31 Northrup Jr Leonard L Air conditioning module
US3950835A (en) * 1974-10-02 1976-04-20 Carrier Corporation Fan assembly and method of manufacturing same
US4232994A (en) * 1977-01-14 1980-11-11 Hitachi, Ltd. Centrifugal turbomachine
US4787818A (en) * 1987-07-27 1988-11-29 Jenn Industries, Inc. Centrifugal blower assembly
US5738167A (en) * 1996-02-08 1998-04-14 Aaon, Inc. Blower fan housing assembly
US5827044A (en) * 1997-03-26 1998-10-27 Yazici; Muammer Fan system with variable air volume control
US6190140B1 (en) * 1998-03-18 2001-02-20 Triangle Engineering Of Arkansas, Inc. Belt-driven fan with tension preserving winged motor mounting
WO2001098670A3 (en) * 2000-06-23 2002-06-20 F W Carduck Gmbh Radial ventilator
WO2001098670A2 (en) * 2000-06-23 2001-12-27 F.W. Carduck Gmbh Radial ventilator
EP1431679A2 (en) * 2002-12-16 2004-06-23 Luis Capdevila, S.A. Ventilation box
EP1431679A3 (en) * 2002-12-16 2004-11-03 Luis Capdevila, S.A. Ventilation box
EP1657451A1 (en) * 2004-11-12 2006-05-17 Hans Östberg A duct fan
US20060127213A1 (en) * 2004-11-12 2006-06-15 Hans Ostberg Duct fan
US7311492B2 (en) 2004-11-12 2007-12-25 Oestberg Hans Duct fan
US20110229358A1 (en) * 2010-03-22 2011-09-22 Gunter Streng Ventilator
US9022753B2 (en) * 2010-03-22 2015-05-05 Ebm-Papst Mulfingen Gmbh & Co. Kg Ventilator

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GB1354613A (en) 1974-06-05
FR2093854A5 (en) 1972-01-28
CA947732A (en) 1974-05-21
CH534812A (en) 1973-03-15
AT313529B (en) 1974-02-25
JPS5128848B1 (en) 1976-08-21
DE2123289A1 (en) 1971-12-09
CS167930B2 (en) 1976-05-28
PL76416B1 (en) 1975-02-28
NL7107244A (en) 1971-12-01
BE767531A (en) 1971-10-18

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