EP1899658B1 - Brace of air diffuser body part - Google Patents

Brace of air diffuser body part Download PDF

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Publication number
EP1899658B1
EP1899658B1 EP06764425.2A EP06764425A EP1899658B1 EP 1899658 B1 EP1899658 B1 EP 1899658B1 EP 06764425 A EP06764425 A EP 06764425A EP 1899658 B1 EP1899658 B1 EP 1899658B1
Authority
EP
European Patent Office
Prior art keywords
brace
flanges
body part
air diffuser
affixed
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
EP06764425.2A
Other languages
German (de)
French (fr)
Other versions
EP1899658A1 (en
EP1899658A4 (en
Inventor
Jari Hokkanen
Henri Valtanen
Seppo Virtanen
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.)
Flaekt Woods AB
Original Assignee
Flaekt Woods AB
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 Flaekt Woods AB filed Critical Flaekt Woods AB
Publication of EP1899658A1 publication Critical patent/EP1899658A1/en
Publication of EP1899658A4 publication Critical patent/EP1899658A4/en
Application granted granted Critical
Publication of EP1899658B1 publication Critical patent/EP1899658B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser

Definitions

  • the present invention relates to an air diffuser comprising a body part with an air flow channel passing there through and a brace for supporting a flow control disc, the brace having an elongated shape extending across the cross section of the flow channel and the brace being made from the same material blank as the body part and the center point of the brace having an inner-threaded hole made thereon to accommodate the center shaft of the flow control disc.
  • the air diffuser may be an inlet air diffuser or an exhaust air diffuser intended for mounting on a room wall or ceiling.
  • the term air diffuser body part refers to a terminal element that is designed mountable on the end of an air flow duct and has a brace for attaching to the diffuser a flow control disc, generally in an adjustable fashion.
  • the brace is a member extending across the air flow channel and conventionally having an inner-threaded hole at its center point. Into this hole is rotated the control disc center shaft with a compatible outer thread.
  • the brace is attached to the diffuser body part by welding the brace at its both ends to the body part.
  • the brace must support the diffuser air flow control disc resting on threads thereon, the brace shall be sufficiently rigid for this function.
  • this kind of separate brace member is made from a thicker material than the diffuser body part.
  • a separate brace to be attached to the body part involves additional worksteps.
  • GB 441652 discloses a diffuser according to the preamble of appending claim 1. It is an object of the present invention to provide an air diffuser having its brace made of the material blank as the diffuser body part and yet being free from the shortcomings of the prior art techniques.
  • An air diffuser according to the invention is characterized in that the brace is bent into a substantially U-shaped cross section and the flanges of the brace cross section are affixed to each other at least at one point about either side of the brace center hole.
  • a preferred embodiment of the invention is characterized in that the flanges of the brace cross section are affixed to each other by welding.
  • a second preferred embodiment of the invention is characterized in that the flanges of the brace cross section are affixed to each other by rivets.
  • a further preferred embodiment of the invention is characterized in that the flanges of the brace cross section are affixed to each other using a crimping technique.
  • a still further preferred embodiment of the invention is characterized in that the flanges of the brace incorporate tabs at which the flanges are affixed to each other.
  • the basic concept of the invention is to fabricate the brace from the same blank as the air diffuser body part whose material thickness is too thin for conventional designs. Affixing the flanges of the brace cross section to each other at least at two points increases substantially the rigidity of the brace. This is a particularly valuable advantage in larger air diffusers. Without having its flanges affixed to each other, the brace cannot be made sufficiently rigid to support the diffuser control disc.
  • FIGS. 1-3 therein is shown an air diffuser body part 1 with its brace 2.
  • the brace has an elongated shape extending across the cross section of the diffuser air flow channel.
  • the brace is connected to the body part at the rim of the air flow channel.
  • the brace is made of the same material blank as the body part such that the unnecessary portions of the body part are first cut off and thereupon the material portions of the brace coinciding with the air flow channel are bent into their final shape.
  • the cross section of the brace is bent into a substantially U-shaped form.
  • At the center point of the brace is fabricated a conventional inner-threaded hole 3 to accommodate the rotation of the treaded shaft of an air flow control disc (not shown), thus making the diffuser controllable by rotation of the control disc.
  • Reference numeral 4 designates tabs fabricated to the flanges of the brace such that allow the flanges to be affixed to each other in the fashion shown in FIGS. 4 and 5 .
  • the tabs may be adhered to each other by, e.g., welding or riveting or using a crimping technique. However, any equivalent affixing technique may be employed as well. Affixing the tabs to each other makes the brace more rigid and supportive under the torsional forces imposed by the control disc.
  • the number of affixing points at the brace flanges can be more than two or, alternatively, the flanges are affixed to each other along their entire length.
  • the tabs of the flanges may also be omitted, particularly in larger braces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Description

  • The present invention relates to an air diffuser comprising a body part with an air flow channel passing there through and a brace for supporting a flow control disc, the brace having an elongated shape extending across the cross section of the flow channel and the brace being made from the same material blank as the body part and the center point of the brace having an inner-threaded hole made thereon to accommodate the center shaft of the flow control disc.
  • The air diffuser may be an inlet air diffuser or an exhaust air diffuser intended for mounting on a room wall or ceiling. The term air diffuser body part refers to a terminal element that is designed mountable on the end of an air flow duct and has a brace for attaching to the diffuser a flow control disc, generally in an adjustable fashion. The brace is a member extending across the air flow channel and conventionally having an inner-threaded hole at its center point. Into this hole is rotated the control disc center shaft with a compatible outer thread.
  • Conventionally the brace is attached to the diffuser body part by welding the brace at its both ends to the body part. Inasmuch as the brace must support the diffuser air flow control disc resting on threads thereon, the brace shall be sufficiently rigid for this function. Generally this kind of separate brace member is made from a thicker material than the diffuser body part. However, a separate brace to be attached to the body part involves additional worksteps.
  • From the prior art is also known a diffuser having the brace of its body part manufactured from the same blank as the body part. Herein the sufficiently high rigidity of the brace is secured by using three radial legs in the brace design in lieu of the conventional two legs. However, this kind of brace is difficult to fabricate and, furthermore, the additional legs of the brace impede the air flow through the diffuser and increase the annoying noise generation.
  • GB 441652 discloses a diffuser according to the preamble of appending claim 1. It is an object of the present invention to provide an air diffuser having its brace made of the material blank as the diffuser body part and yet being free from the shortcomings of the prior art techniques. An air diffuser according to the invention is characterized in that the brace is bent into a substantially U-shaped cross section and the flanges of the brace cross section are affixed to each other at least at one point about either side of the brace center hole.
  • A preferred embodiment of the invention is characterized in that the flanges of the brace cross section are affixed to each other by welding.
  • A second preferred embodiment of the invention is characterized in that the flanges of the brace cross section are affixed to each other by rivets.
  • A further preferred embodiment of the invention is characterized in that the flanges of the brace cross section are affixed to each other using a crimping technique.
  • A still further preferred embodiment of the invention is characterized in that the flanges of the brace incorporate tabs at which the flanges are affixed to each other.
  • Accordingly, the basic concept of the invention is to fabricate the brace from the same blank as the air diffuser body part whose material thickness is too thin for conventional designs. Affixing the flanges of the brace cross section to each other at least at two points increases substantially the rigidity of the brace. This is a particularly valuable advantage in larger air diffusers. Without having its flanges affixed to each other, the brace cannot be made sufficiently rigid to support the diffuser control disc.
  • In the following, the invention is described in more detail with reference to the appended drawings in which
    • FIG. 1 shows an axonometric view of an air diffuser body part and its brace in a workstep having the brace cross section bent into an essentially U-shaped form;
    • FIG. 2 shows the assembly of FIG. 1, now in a top view;
    • FIG. 3 shows the assembly of FIGS. 1 and 2, now in a side elevation view;
    • FIG. 4 shows an axonometric view of an air diffuser body part according to the invention and its brace in a workstep having the flanges of the brace cross section affixed to each other at two points; and
    • FIG. 5 shows the assembly of FIG. 4, now in a top view.
  • Now referring to FIGS. 1-3, therein is shown an air diffuser body part 1 with its brace 2. The brace has an elongated shape extending across the cross section of the diffuser air flow channel. The brace is connected to the body part at the rim of the air flow channel. The brace is made of the same material blank as the body part such that the unnecessary portions of the body part are first cut off and thereupon the material portions of the brace coinciding with the air flow channel are bent into their final shape. In the worksteps of FIGS. 1-3, the cross section of the brace is bent into a substantially U-shaped form. At the center point of the brace is fabricated a conventional inner-threaded hole 3 to accommodate the rotation of the treaded shaft of an air flow control disc (not shown), thus making the diffuser controllable by rotation of the control disc.
  • Reference numeral 4 designates tabs fabricated to the flanges of the brace such that allow the flanges to be affixed to each other in the fashion shown in FIGS. 4 and 5. In the design illustrated in the diagrams, two tabs are provided at both flanges of the brace, one tab at either side of the center hole 3 of flange. The tabs may be adhered to each other by, e.g., welding or riveting or using a crimping technique. However, any equivalent affixing technique may be employed as well. Affixing the tabs to each other makes the brace more rigid and supportive under the torsional forces imposed by the control disc.
  • To a person skilled in the art it is obvious that the invention is not limited by the above-described exemplifying embodiments, but rather may be varied within the scope of the appended claims. Accordingly, the number of affixing points at the brace flanges can be more than two or, alternatively, the flanges are affixed to each other along their entire length. The tabs of the flanges may also be omitted, particularly in larger braces.

Claims (5)

  1. An air diffuser comprising a body part (1) with an air flow channel passing therethrough and a brace (2) for supporting a flow control disc, the brace having an elongated shape extending across the cross section of the flow channel and the brace (2) being made from the same material blank as the body part (1) and the center point of the brace having an inner-threaded hole (3) made thereon to accommodate the center shaft of the flow control disc, characterized in that the brace (2) is bent into a substantially U-shaped cross section and the flanges of the brace cross section are affixed to each other at least at one point about either side of the brace center hole (3).
  2. The air diffuser of claim 1, characterized in that the flanges of the brace (2) are affixed to each other by welding.
  3. The air diffuser of claim 1, characterized in that the flanges of the brace (2) are affixed to each other by rivets.
  4. The air diffuser of claim 1, characterized in that the flanges of the brace (2) are affixed to each other using a crimping technique.
  5. The air diffuser of any one of claims 1-3, characterized in that the flanges of the brace (2) incorporate tabs (4) at which the flanges are affixed to each other.
EP06764425.2A 2005-06-23 2006-06-14 Brace of air diffuser body part Active EP1899658B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20050679A FI120847B (en) 2005-06-23 2005-06-23 Trap for ventilation valve body
PCT/FI2006/000199 WO2006136647A1 (en) 2005-06-23 2006-06-14 Brace of air diffuser body part

Publications (3)

Publication Number Publication Date
EP1899658A1 EP1899658A1 (en) 2008-03-19
EP1899658A4 EP1899658A4 (en) 2013-01-16
EP1899658B1 true EP1899658B1 (en) 2013-08-14

Family

ID=34778391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06764425.2A Active EP1899658B1 (en) 2005-06-23 2006-06-14 Brace of air diffuser body part

Country Status (7)

Country Link
EP (1) EP1899658B1 (en)
CN (1) CN101223404B (en)
DK (1) DK1899658T3 (en)
FI (1) FI120847B (en)
NO (1) NO329189B1 (en)
RU (1) RU2403507C2 (en)
WO (1) WO2006136647A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102155775B (en) * 2011-05-12 2013-04-03 芜湖市协普机器有限公司 Air draft head
US10883174B2 (en) * 2018-11-27 2021-01-05 Applied Materials, Inc. Gas diffuser mounting plate for reduced particle generation
US10989208B2 (en) * 2019-01-16 2021-04-27 Smb Technology Corporation Air circulation device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1436649A (en) * 1921-08-22 1922-11-28 Hunter Clark Ventilating Syste Ventilator
GB441652A (en) * 1934-11-07 1936-01-23 Hall & Kay Ltd Improvements in or relating to air directing devices or nozzles for use in ventilating systems
GB658701A (en) * 1948-09-14 1951-10-10 Charles Demuth Improvements in or relating to adjusting devices
US3103869A (en) * 1961-08-29 1963-09-17 John P Dry Adjustable air diffuser and damper
FI37697A (en) * 1965-02-19 1968-03-11 Bahco Ab Device in supply valves
US4335647A (en) * 1979-11-19 1982-06-22 Automation Industries, Inc. Air device with flexible mounting system
FI61353C (en) * 1980-03-19 1982-07-12 Arisuo Oy VENTILRAM
US4714009A (en) * 1986-08-04 1987-12-22 Philips Industries Inc. Ceiling air diffuser
CN2184887Y (en) * 1993-12-10 1994-12-07 玉丰冷气冷冻工程有限公司 Electricity-free rotary blowing device at outlet
CN2276129Y (en) * 1996-06-28 1998-03-11 郭金裕 Non-electricity rotating air outlet device

Also Published As

Publication number Publication date
FI120847B (en) 2010-03-31
EP1899658A1 (en) 2008-03-19
EP1899658A4 (en) 2013-01-16
CN101223404A (en) 2008-07-16
DK1899658T3 (en) 2013-11-04
CN101223404B (en) 2010-06-16
RU2008102369A (en) 2009-07-27
FI20050679A0 (en) 2005-06-23
NO329189B1 (en) 2010-09-06
WO2006136647A1 (en) 2006-12-28
FI20050679A (en) 2006-12-24
NO20080424L (en) 2008-01-23
RU2403507C2 (en) 2010-11-10

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