EP3824189B1 - A supplementary air blowing apparatus for radial fans and a radial fan - Google Patents

A supplementary air blowing apparatus for radial fans and a radial fan Download PDF

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Publication number
EP3824189B1
EP3824189B1 EP19727374.1A EP19727374A EP3824189B1 EP 3824189 B1 EP3824189 B1 EP 3824189B1 EP 19727374 A EP19727374 A EP 19727374A EP 3824189 B1 EP3824189 B1 EP 3824189B1
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EP
European Patent Office
Prior art keywords
air blowing
air
blowing port
supplementary
radial
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.)
Active
Application number
EP19727374.1A
Other languages
German (de)
French (fr)
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EP3824189A1 (en
Inventor
Adem AKSOY
Onder Balioglu
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.)
Arcelik AS
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Arcelik AS
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Publication date
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Publication of EP3824189A1 publication Critical patent/EP3824189A1/en
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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
    • 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
    • F04D29/4246—Fan casings comprising more than one outlet

Definitions

  • the present invention relates to an air blowing assembly comprising a radial fan with expanded air blowing area.
  • Radial fans also referred to as centrifugal fan, squirrel cage fan or blower
  • Radial fans of the prior art comprise a body, an air inlet and an air blowing port provided on the body and positioned perpendicularly to each other, and a fan wheel positioned on the air inlet in the body, for blowing the air received from the air inlet through the air blowing port.
  • the proportion of the air blowing port length (a) to the body length (b) is considerably low ( Figure 1 ).
  • air blowing area is considerably smaller compared to the lateral cross-section of the body.
  • Said small blowing area causes the air blown by the fan wheel to be compressed and to collide the walls of the blowing port. Compressed air colliding the blowing port walls disrupts homogeneous air flow. Consequently, ventilation performance and noise levels of the radial fan are adversely affected.
  • EP2405144A2 and EP2921712A1 disclose a radial fan whose blowing port length is less than body length.
  • US2002119044A1 discloses a centrifugal blower with partitioned scroll diffuser, comprising multiple flow channels.
  • the proportion of the air blowing area of conventional radial fans to the lateral cross-section of the body is increased by means of a supplementary air blowing apparatus for radial fans, of the present application.
  • the proportion of the air blowing area to the lateral cross-section of the body is increased in the radial fan of the present application.
  • the aim of the present invention is to realize an air blowing assembly which is enabling increasing air blowing area of conventional radial fans.
  • the aim of the present invention is to realize an air blowing assembly comprising a radial fan whose air blowing area is increased with respect to its lateral cross-section.
  • air blowing area of the currently available radial fans are increased by means of a detachable supplementary air blowing apparatus.
  • An air blowing assembly is realized whose air blowing area of the radial fan is increased by means of a supplementary air blowing port. Both embodiments comprise the same inventive concept.
  • the air blowing assembly of the application is comprising a radial fan having a body (2), an air inlet (3) and a main air blowing port (4) provided on the body (2) and positioned perpendicularly to each other, a fan wheel (5) positioned on the air inlet (3) in the body (2), for blowing the air received from the air inlet (3) through at least the air blowing port (4); and comprises at least one flow separator (7) fitted into the main air blowing port (4), enabling directing a part of the air blown by the fan wheel (5) to an air duct (6) by splitting the air; at least one air duct (6) fitted on the opposite surface of the body (2) where the air inlet (3) is not present, enabling the flow separator (7) to split the air blown by the fan wheel (5) and to direct the air thereon (on the air duct (6)); and at least one supplementary air blowing port (8) positioned parallel and next to the main air blowing port (4), connected from one end to the air duct (6) and comprising another (
  • the supplementary air blowing apparatus comprises an air duct (6) connected to the supplementary air blowing port (8), whose portion connected to the flow separator (7) extends from the main air blowing port (4) on which it is to be fitted and bends 180° on the main air blowing port (4) on which it is fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is fitted.
  • the air blowing assembly comprises an air duct (6) connected to the supplementary air blowing port (8), whose portion connected to the flow separator (7) extends from the main air blowing port (4), bends 180° on the main air blowing port (4) on which it is fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is fitted and then bends in an S-shape from the corner of the body (2) where the main air blowing port (4) is disposed and thus becomes aligned with the main air blowing port (4) on which it is fitted.
  • a conventional radial fan (1) with the supplementary air blowing apparatus of the invention fitted thereon can be assembled directly to a seat conforming to conventional radial fans provided in systems where currently available radial fans are used.
  • the supplementary air blowing apparatus may have a detachable structure.

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

Description

  • The present invention relates to an air blowing assembly comprising a radial fan with expanded air blowing area.
  • Radial fans (also referred to as centrifugal fan, squirrel cage fan or blower) are commonly used in many products which have thin body structures. Radial fans of the prior art comprise a body, an air inlet and an air blowing port provided on the body and positioned perpendicularly to each other, and a fan wheel positioned on the air inlet in the body, for blowing the air received from the air inlet through the air blowing port. In radial fans of the prior art, the proportion of the air blowing port length (a) to the body length (b) is considerably low (Figure 1). Likewise, air blowing area is considerably smaller compared to the lateral cross-section of the body. Said small blowing area causes the air blown by the fan wheel to be compressed and to collide the walls of the blowing port. Compressed air colliding the blowing port walls disrupts homogeneous air flow. Consequently, ventilation performance and noise levels of the radial fan are adversely affected.
  • Publications no. EP2405144A2 and EP2921712A1 disclose a radial fan whose blowing port length is less than body length.
  • US2002119044A1 discloses a centrifugal blower with partitioned scroll diffuser, comprising multiple flow channels.
  • The proportion of the air blowing area of conventional radial fans to the lateral cross-section of the body is increased by means of a supplementary air blowing apparatus for radial fans, of the present application. The proportion of the air blowing area to the lateral cross-section of the body is increased in the radial fan of the present application. Thus, air blown by the fan wheel is prevented from being compressed and homogeneous air flow is provided by reducing the air colliding blowing port walls. Consequently, ventilation performance of the radial fan is enhanced and its noise levels are reduced.
  • The aim of the present invention is to realize an air blowing assembly which is enabling increasing air blowing area of conventional radial fans.
  • The aim of the present invention is to realize an air blowing assembly comprising a radial fan whose air blowing area is increased with respect to its lateral cross-section.
  • An exemplary embodiment of the air blowing assembly comprisin a radial fan realized to achieve the aims of the present invention is illustrated in the accompanying drawings for a better understanding. The details of the invention should be examined considering the entirety of the specification. Wherein,
    • Figure 1 : schematically shows air flow in a radial fan of the prior art.
    • Figure 2 : is a schematic view of the radial fan in an embodiment of the invention, from above.
    • Figure 3 : shows a duct wall of the air duct comprised by the radial fan in an embodiment of the invention.
    • Figure 4 : shows air flow in the radial fan in an embodiment of the invention.
    • Figure 5 : is a sectional view of the radial fan in an embodiment of the invention, taken from main air blowing port side.
    • Figure 6 : is a sectional view of the radial fan in an embodiment of the invention, taken from supplementary air blowing port side.
  • The elements in the figures are numbered individually and the correspondence of these numbers are given hereinafter.
    • 1. Radial fan
    • 2. Body
    • 3. Air inlet
    • 4. Main air blowing port
    • 5. Fan wheel
    • 6. Air duct
      6.1 Duct wall
    • 7. Flow separator
    • 8. Supplementary air blowing port
    • a. Air blowing port length
    • b. Body length
  • In an embodiment of the invention, air blowing area of the currently available radial fans are increased by means of a detachable supplementary air blowing apparatus. In another embodiment of the invention, An air blowing assembly is realized whose air blowing area of the radial fan is increased by means of a supplementary air blowing port. Both embodiments comprise the same inventive concept.
  • The air blowing assembly of the application is comprising a radial fan having a body (2), an air inlet (3) and a main air blowing port (4) provided on the body (2) and positioned perpendicularly to each other, a fan wheel (5) positioned on the air inlet (3) in the body (2), for blowing the air received from the air inlet (3) through at least the air blowing port (4); and comprises at least one flow separator (7) fitted into the main air blowing port (4), enabling directing a part of the air blown by the fan wheel (5) to an air duct (6) by splitting the air; at least one air duct (6) fitted on the opposite surface of the body (2) where the air inlet (3) is not present, enabling the flow separator (7) to split the air blown by the fan wheel (5) and to direct the air thereon (on the air duct (6)); and at least one supplementary air blowing port (8) positioned parallel and next to the main air blowing port (4), connected from one end to the air duct (6) and comprising another (open) end for discharging the air in the air duct (6). The supplementary air blowing apparatus comprises an air duct (6) connected to the supplementary air blowing port (8), whose portion connected to the flow separator (7) extends from the main air blowing port (4) on which it is to be fitted and bends 180° on the main air blowing port (4) on which it is fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is fitted.
  • In an embodiment of the invention, the air blowing assembly comprises an air duct (6) connected to the supplementary air blowing port (8), whose portion connected to the flow separator (7) extends from the main air blowing port (4), bends 180° on the main air blowing port (4) on which it is fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is fitted and then bends in an S-shape from the corner of the body (2) where the main air blowing port (4) is disposed and thus becomes aligned with the main air blowing port (4) on which it is fitted. In this embodiment of the invention, since the body (2) form/shape of conventional radial fans are maintained/kept, a conventional radial fan (1) with the supplementary air blowing apparatus of the invention fitted thereon, can be assembled directly to a seat conforming to conventional radial fans provided in systems where currently available radial fans are used.
  • In an embodiment of the invention the supplementary air blowing apparatus may have a detachable structure.

Claims (3)

  1. An air blowing assembly comprising; a radial fan having a body (2), an air inlet (3) and a main air blowing port (4) provided on the body (2), wherein said air inlet (3) is positioned perpendicularly to said main air blowing port (4), and a fan wheel (5) positioned on the air inlet (3) in the body (2), for blowing air received from the air inlet (3) through at least the main air blowing port (4) and a supplementary air blowing apparatus mounted on the radial fan, with at least one air duct (6) which, when the supplementary air blowing apparatus is mounted on the radial fan, is positioned on the opposite surface of the body (2) where the air inlet (3) is not present; at least one flow separator (7) fitted into the main air blowing port (4) such that a part of the air blown by the fan wheel (5) towards the main air blowing port (4) is directed to the air duct (6) by splitting the air; and at least one supplementary air blowing port (8) positioned, mounted on the radial fan, parallel and next to the main air blowing port (4), wherein the supplementary air blowing port (8) is connected from one end to the air duct (6) and comprises another end for discharging the air that is in the air duct (6) characterized in that the air duct (6) is connected to the supplementary air blowing port (8), whose portion connected to the flow separator (7) extends from the main air blowing port (4) and bends 180° on the main air blowing port (4) on which it is fitted, then bends 180° centered about the fan wheel (5) on which it is fitted and advances on said opposite surface on which it is fitted.
  2. An air blowing assembly according to claim 1, comprising the air duct (6) connected to the supplementary air blowing port (8), whose portion connected to the flow separator (7) extends from the main air blowing port (4), bends 180° on the main air blowing port (4) on which it is fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is fitted and then bends in an S-shape towards the corner of the body (2) where the main air blowing port (4) is disposed and thus becomes aligned with the main air blowing port (4).
  3. An air blowing assembly according to claim 1, characterized by the supplementary air blowing apparatus having a detachable structure.
EP19727374.1A 2018-07-19 2019-05-28 A supplementary air blowing apparatus for radial fans and a radial fan Active EP3824189B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201810332 2018-07-19
PCT/EP2019/063789 WO2020015902A1 (en) 2018-07-19 2019-05-28 A supplementary air blowing apparatus for radial fans and a radial fan

Publications (2)

Publication Number Publication Date
EP3824189A1 EP3824189A1 (en) 2021-05-26
EP3824189B1 true EP3824189B1 (en) 2023-11-08

Family

ID=66676535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19727374.1A Active EP3824189B1 (en) 2018-07-19 2019-05-28 A supplementary air blowing apparatus for radial fans and a radial fan

Country Status (2)

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EP (1) EP3824189B1 (en)
WO (1) WO2020015902A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020119044A1 (en) * 2001-02-26 2002-08-29 O'connor, John F. Centrifugal blower with partitioned scroll diffuser
JP2010100108A (en) * 2008-10-21 2010-05-06 Denso Corp Blower and vehicular air-conditioner having the same
EP2405144A3 (en) 2010-04-25 2018-03-21 Darco Sp. z o.o. Radial fan
ITFI20110177A1 (en) * 2011-08-11 2013-02-12 Enel Ingegneria E Innovazione S P A CENTRIFUGAL FAN WITH SEVENTY ANTI-ANTI-BLOOD FOR REDUCING VIBRATIONS AND NOISE
EP2921712B1 (en) 2014-03-17 2019-11-20 Elica S.p.A. A rotor for a radial fan and a radial fan

Also Published As

Publication number Publication date
WO2020015902A1 (en) 2020-01-23
EP3824189A1 (en) 2021-05-26

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