EP3824189A1 - 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

Info

Publication number
EP3824189A1
EP3824189A1 EP19727374.1A EP19727374A EP3824189A1 EP 3824189 A1 EP3824189 A1 EP 3824189A1 EP 19727374 A EP19727374 A EP 19727374A EP 3824189 A1 EP3824189 A1 EP 3824189A1
Authority
EP
European Patent Office
Prior art keywords
air
air blowing
blowing port
main
bends
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.)
Granted
Application number
EP19727374.1A
Other languages
German (de)
French (fr)
Other versions
EP3824189B1 (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
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3824189A1 publication Critical patent/EP3824189A1/en
Application granted granted Critical
Publication of EP3824189B1 publication Critical patent/EP3824189B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04D29/40—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 a supplementary air blowing apparatus for radial fans and 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.
  • 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 a supplementary air blowing apparatus for radial fans, enabling increasing air blowing area of conventional radial fans.
  • the aim of the present invention is to realize a radial fan whose air blowing area is increased with respect to its lateral cross-section.
  • 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.
  • air blowing area of the currently available radial fans are increased by means of a detachable supplementary air blowing apparatus.
  • a radial fan (1) is realized whose air blowing area is increased by means of a supplementary air blowing port. Both embodiments comprise the same inventive concept.
  • the supplementary air blowing apparatus of the application is suitable to be mounted on 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)
  • 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 to be fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is to be fitted.
  • 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), bends 180° on the main air blowing port (4) on which it is to be fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is to be 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 to be 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.
  • This embodiment of the invention may have a detachable structure.
  • the radial fan (1) of the invention comprises 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 air received from the air inlet (3) through at least the air blowing port (4), at least one flow separator (7) enabling splitting the air blown by the fan wheel (5) provided in the main air blowing port (4) and directing a part of said air (blown by the fan wheel (5)) to at least one air duct (6) disposed on the opposite surface of the body (2) where the air inlet (3) is not present, and at least one supplementary air blowing port (8) positioned parallel and next to the air blowing port, connected from one end to the air duct (6) and comprising another end for discharging the air in the air duct (6).
  • the radial fan (1) 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) and bends 180° on the main air blowing port (4), then bends 180° centered about the fan wheel (5) and advances on said opposite surface.
  • the radial fan (1) 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), then bends 180° on the main air blowing port (4), bends 180° centered about the fan wheel (5) and advances straight 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).
  • the radial fan (1) of the invention can be assembled directly to a seat conforming to conventional radial fans provided in systems where currently available radial fans are used.

Landscapes

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

Abstract

The present invention relates to a radial fan (1) comprising 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 air received from the air inlet (3) at least through the air blowing port (4), at least one flow separator (7) enabling splitting the air blown by the fan wheel (5) provided in the main air blowing port (4) and directing a part of said air to at least one air duct (6) disposed on the opposite surface of the body (2) where the air inlet (3) is not present, and at least one supplementary air blowing port (8) positioned parallel and next to the air blowing port, connected from one end to the air duct (6) and comprising another end for discharging the air in the air duct (6).

Description

    A SUPPLEMENTARY AIR BLOWING APPARATUS FOR RADIAL FANS AND A RADIAL FAN
  • The present invention relates to a supplementary air blowing apparatus for radial fans and 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.
  • 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 a supplementary air blowing apparatus for radial fans, enabling increasing air blowing area of conventional radial fans.
  • The aim of the present invention is to realize a radial fan whose air blowing area is increased with respect to its lateral cross-section.
  • An exemplary embodiment of 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, a radial fan (1) is realized whose air blowing area is increased by means of a supplementary air blowing port. Both embodiments comprise the same inventive concept.
  • The supplementary air blowing apparatus of the application is suitable to be mounted on 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).
  • In an embodiment of the invention, 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 to be fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is to be fitted.
  • In an embodiment of the invention, 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), bends 180° on the main air blowing port (4) on which it is to be fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is to be 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 to be 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.
  • This embodiment of the invention may have a detachable structure.
  • The radial fan (1) of the invention comprises 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 air received from the air inlet (3) through at least the air blowing port (4), at least one flow separator (7) enabling splitting the air blown by the fan wheel (5) provided in the main air blowing port (4) and directing a part of said air (blown by the fan wheel (5)) to at least one air duct (6) disposed on the opposite surface of the body (2) where the air inlet (3) is not present, and at least one supplementary air blowing port (8) positioned parallel and next to the air blowing port, connected from one end to the air duct (6) and comprising another end for discharging the air in the air duct (6).
  • In an embodiment of the invention, the radial fan (1) 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) and bends 180° on the main air blowing port (4), then bends 180° centered about the fan wheel (5) and advances on said opposite surface.
  • In an embodiment of the invention, the radial fan (1) 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), then bends 180° on the main air blowing port (4), bends 180° centered about the fan wheel (5) and advances straight 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). In this embodiment of the invention, since the body (2) form/shape of conventional radial fans are maintained/kept, the radial fan (1) of the invention can be assembled directly to a seat conforming to conventional radial fans provided in systems where currently available radial fans are used.

Claims (7)

  1. An air blowing apparatus suitable to be mounted on 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, 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); comprising at least one flow separator (7) fitted into the main air blowing port (4) and 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; 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 end for discharging the air in the air duct (6).
  2. An air blowing apparatus according to claim 1, comprising 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) and bends 180° on the main air blowing port (4) on which it is to be fitted, then bends 180° centered about the fan wheel (5) on which it is to be fitted and advances on said opposite surface on which it is to be fitted.
  3. An air blowing apparatus according to claim 1, comprising 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 to be fitted, then bends 180° centered about the fan wheel (5) and advances on said opposite surface on which it is to be 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).
  4. An air blowing apparatus according to claim 1, characterized by having a detachable structure.
  5. A radial fan (1) comprising 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 air received from the air inlet (3) at least through the air blowing port (4), characterized by at least one flow separator (7) enabling splitting the air blown by the fan wheel (5) provided in the main air blowing port (4) and directing a part of said air to at least one air duct (6) disposed on the opposite surface of the body (2) where the air inlet (3) is not present, and at least one supplementary air blowing port (8) positioned parallel and next to the air blowing port, connected from one end to the air duct (6) and comprising another end for discharging the air in the air duct (6).
  6. A radial fan (1) according to claim 5, comprising 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) and bends 180° on the main air blowing port (4), then bends 180° centered about the fan wheel (5) and advances on said opposite surface.
  7. A radial fan (1) according to claim 5, comprising 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), then bends 180° on the main air blowing port (4), bends 180° centered about the fan wheel (5) and advances on said opposite surface 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).
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 true EP3824189A1 (en) 2021-05-26
EP3824189B1 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)

Country Link
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
EP3824189B1 (en) 2023-11-08
WO2020015902A1 (en) 2020-01-23

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