EP3964764A1 - Raccord angulaire pour canaux en tôle - Google Patents

Raccord angulaire pour canaux en tôle Download PDF

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Publication number
EP3964764A1
EP3964764A1 EP21193706.5A EP21193706A EP3964764A1 EP 3964764 A1 EP3964764 A1 EP 3964764A1 EP 21193706 A EP21193706 A EP 21193706A EP 3964764 A1 EP3964764 A1 EP 3964764A1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
metal duct
connecting element
hollow profile
frame
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.)
Pending
Application number
EP21193706.5A
Other languages
German (de)
English (en)
Inventor
Hermann Buser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3964764A1 publication Critical patent/EP3964764A1/fr
Pending legal-status Critical Current

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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
    • F24F13/0209—Ducting arrangements characterised by their connecting means, e.g. flanges
    • 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
    • F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor

Definitions

  • the present invention relates to a connecting element for assembling sheet metal duct sections.
  • sheet metal duct sections are assembled in order to obtain one-piece sheet metal ducts for room ventilation.
  • the sheet metal duct sections are usually screwed.
  • Screwing the sheet metal duct sections together is a time-consuming process. In addition, screwing together does not ensure that the sheet metal duct sections are watertight or liquid-tight.
  • the production time for assembling individual sheet metal duct sections should be shortened by the device according to the invention.
  • a connecting element is provided for the detachable or non-detachable connection of a first and a second frame profile to a first and a second sheet metal duct section, the connecting element being a hollow profile with a miter opening, which has a bend at the miter opening.
  • the connecting element is designed as a hollow profile and can thus clamp together surfaces of two frame profiles that lie on top of one another. In this way, the connection, the assembly, of sheet metal duct sections lying against one another can take place to form a one-piece, one-piece sheet metal duct.
  • the hollow profile according to the invention can be bent due to a miter cut, so that the hollow profile is suitable for connecting the corners of frame profiles that are moved together from sheet metal duct sections that lie on top of one another. This results in a method of connection for this corner area which is characterized by high tightness and in which the connection can be made very quickly.
  • a sheet metal duct for room ventilation comprising: a first sheet metal duct section with a first frame profile, the first frame profile being fastened to the first sheet metal duct section with a hollow profile, and a second sheet metal duct section with a second frame profile, the second Frame profile is fastened with a hollow profile to the second sheet metal duct section, wherein the first frame profile is detachably or non-detachably connected to the second frame profile with a connecting element according to one of claims 1 to 4.
  • a connector wherein the bend is 90°.
  • a connecting element is made available, wherein the miter opening is such that sections of the connecting element result that lie on top of and/or on top of one another.
  • a connecting element is provided, wherein the overlying sections are welded to one another.
  • An idea of the invention can be seen as providing a manufacturing method for corner connections for sheet metal ducts, with hollow profiles and clips being used. As a result, the assembly of individual sheet metal duct sections can be accelerated in terms of time. In addition, the tightness of the connection points of the sheet metal duct increases.
  • FIG. 1 shows a sheet metal duct 2 with a rectangular cross section (rectangular tubes, ducts). There are also sheet metal ducts with a round cross-section (round pipes). The sheet metal ducts 2 mostly have a sheet metal thickness of up to 1.25 mm or up to 1.5 mm.
  • hollow profile frames 4 are used, which are reinforced at the four corners of the sheet metal duct with corner brackets. There are holes in the corner brackets through which screws 1 are inserted during assembly and then screwed together. Successive channel parts 2 are connected to the frame connections 4 by means of screws 1 to form a strand or sheet metal channel.
  • connection This type of connection is called a "four-hole connection". In this way, complete duct lines or sheet metal ducts can be constructed.
  • the "four-hole connection" is used in almost all ventilation and air-conditioning systems today. As a rule, three different basic types of profile sizes with 20 mm, 30 mm and 40 mm side lengths are used. The assembly of the frame profiles 4 and the insertion of the corners is now largely manual work. There are machines for this, but they are expensive and inflexible when it comes to the different profile types, sizes and lengths.
  • FIG. 2 shows the assembly of duct sections according to the prior art, with hollow profiles 5 being arranged on interface elements/frame profiles 4 .
  • the interface elements 4 are fastened to the channel sections 2 by means of the hollow profiles 5 .
  • the interface elements 4 are then screwed together so that duct sections 2 are assembled into a one-piece sheet metal duct.
  • FIG. 3 shows a hollow profile 5 without a miter opening, which can be used for detachably attaching interface elements 4 to sheet metal duct sections 2 .
  • figure 5 shows the hollow profile 7 with the miter opening 6, the miter opening 6 being used to bend the hollow profile.
  • FIG. 6 shows a hollow profile that is suitable as a clip for connecting the corners of frame profiles 4, with a miter cut 6 being made in a first step, with the miter cut not being able to be made completely, but with material remaining on the inner edge. After bending, this results in parts of the hollow profile 7 lying one on top of the other, which increase the mechanical stability of the hollow profile 7 .
  • the hollow profile 7 shows the hollow profile 7, which represents a curved hollow profile 5.
  • the hollow profile 7 represents a curved hollow profile 5.
  • Interface elements 4 is provided.
  • the clips 7 connect the interface elements 4, which can be designed as frame profiles. With this type of connection, the interface elements/frame profiles 4 can be installed more quickly and the resulting tightness is better compared to a detachable connection by screwing. In addition, another advantage results from the fact that the frame profiles or interface elements 4 can be opened again easily.
  • the hollow profile 7 according to the invention is designed as an angle and is open on one side so that the metal duct can be inserted. A bend in the hollow profile 7 is prepared for the bending process by the miter cut 6 or the miter opening 6 . In addition, a hole for later mutual attachment of the channel parts 2 can be provided.
  • a special design of the miter cut 6 can then be supplemented by a fastening process by means of joining, folding over or welding.
  • the clip, the curved hollow profile 7, can be additionally stabilized in that the miter cut is interrupted on the rear side, on the channel-receiving leg. As a result, a strip of material remains on the other side of the leg, which can be folded over to one side after bending.
  • the miter opening 6 can be designed in such a way that overlapping sections result after the hollow profile has been bent by 90°.
  • the resulting sections lying on top of one another can be connected to one another, for example by welding. This results in high mechanical stability of the clip or of the curved hollow profile 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Duct Arrangements (AREA)
EP21193706.5A 2020-09-02 2021-08-30 Raccord angulaire pour canaux en tôle Pending EP3964764A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020122961.5A DE102020122961A1 (de) 2020-09-02 2020-09-02 Eckverbindungen für Blechkanäle

Publications (1)

Publication Number Publication Date
EP3964764A1 true EP3964764A1 (fr) 2022-03-09

Family

ID=77543344

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21193706.5A Pending EP3964764A1 (fr) 2020-09-02 2021-08-30 Raccord angulaire pour canaux en tôle

Country Status (2)

Country Link
EP (1) EP3964764A1 (fr)
DE (1) DE102020122961A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29801851U1 (de) * 1998-02-04 1998-05-07 Buser, Hermann, 67659 Kaiserslautern Rahmen aus Blech-Hohlprofilen zum Anbringen an den Enden von Blechkanälen
US7104104B1 (en) * 2002-02-01 2006-09-12 Jeffrey Allen Hermanson Rectangular and square ducting systems
WO2014071905A1 (fr) * 2012-11-07 2014-05-15 Berliner Wartungs- und Kundendienst GmbH Canalisation d'air

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423576A (en) 1992-01-10 1995-06-13 Industrial Air, Inc. Corner pieces for improved duct connector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29801851U1 (de) * 1998-02-04 1998-05-07 Buser, Hermann, 67659 Kaiserslautern Rahmen aus Blech-Hohlprofilen zum Anbringen an den Enden von Blechkanälen
US7104104B1 (en) * 2002-02-01 2006-09-12 Jeffrey Allen Hermanson Rectangular and square ducting systems
WO2014071905A1 (fr) * 2012-11-07 2014-05-15 Berliner Wartungs- und Kundendienst GmbH Canalisation d'air

Also Published As

Publication number Publication date
DE102020122961A1 (de) 2022-03-03

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