EP2553348A1 - Method of eliminating the protrusion and resistance originating from the flanges formed at the interior surfaces of air ducts - Google Patents

Method of eliminating the protrusion and resistance originating from the flanges formed at the interior surfaces of air ducts

Info

Publication number
EP2553348A1
EP2553348A1 EP10779066A EP10779066A EP2553348A1 EP 2553348 A1 EP2553348 A1 EP 2553348A1 EP 10779066 A EP10779066 A EP 10779066A EP 10779066 A EP10779066 A EP 10779066A EP 2553348 A1 EP2553348 A1 EP 2553348A1
Authority
EP
European Patent Office
Prior art keywords
air duct
flange
interior surface
end part
air
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.)
Withdrawn
Application number
EP10779066A
Other languages
German (de)
French (fr)
Inventor
Yavuz Dogan
Ali Lutfu Kirantay
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.)
Sente Makina Insaat Sanayi ve Ticaret LS
Original Assignee
Sente Makina Insaat Sanayi ve Ticaret LS
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 Sente Makina Insaat Sanayi ve Ticaret LS filed Critical Sente Makina Insaat Sanayi ve Ticaret LS
Publication of EP2553348A1 publication Critical patent/EP2553348A1/en
Withdrawn legal-status Critical Current

Links

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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/12—Flanged joints specially adapted for particular pipes
    • F16L23/14—Flanged joints specially adapted for particular pipes for rectangular pipes

Definitions

  • the invention relates to air ducts used in domestic and industrial devices and boilers operating with natural gas, fuel oil, LPG, and solid fuel, in gases produced by or stack gases emitted by industrial production devices, and in addition to these, in ventilation, pneumatic carrying, filtration systems, industrial or restaurant kitchen fume hoods found in industrial or commercial facilities.
  • the invention particularly relates to the method of reconfiguration of the air duct intended for reduction and elimination of the protrusion and resistance originating from the flanges formed at the interior surfaces of the air ducts, which are in the form of square or rectangle, and which are made of galvanized metal sheet convenient with the desired standards in order to be used at said fields.
  • flanges are produced in standard forms and structures. Flanges are fitted at the open ends of two air ducts and thus provide combination and extension of them. Said flanges are called "Ready Made Air Duct Flanges". Ready Made Air Duct Flanges are designed in order to provide maximum durability and ease of mounting in air ducts. It is made of galvanized metal sheet convenient with the desired standards. Metal sheet and channel placement joints of the flanges are jointed along the flange. In this way, the desired sealing is obtained. However, these jointing pastes can be worn and removed in time according to the hotness and the velocity of the air circulating in the air duct.
  • the air duct flange of this invention is basically formed of two main parts, which are the completely galvanized corner component made of steel metal sheet and the flange profile.
  • a square shaped air duct flange is obtained from four flange profiles which are cut 30 mm shorter than the dimensions of the air duct and by placement of four corner components at corner component housings.
  • a flange like a cap is fitted at the open ends of air ducts. Afterwards, flanges are fixed to each other and the length of the air duct is extended in a way that it would elongate towards the desired places.
  • some undesired situations occur in parts where the air duct is combined with the flange. At said combination part, the flange is removed in time via the impact of the pushing force of air, it cannot show resistance against air flow and it is open to entrance of dust at these parts.
  • the present invention relates to reconfiguration of the end parts of the straight channel and complete fittings group air ducts according to standard readymade flanges meeting the above said requirements, Eliminating all of the drawbacks and bringing about some additional advantages.
  • the purpose of the invention is to provide the flange have an interior surface completely at the same level with the interior surface of the air duct by concealing the flange at the air duct interior surface via the re-configured air duct mouth.
  • the purpose of the invention is to provide an air duct, which is re-configured with the purpose of reducing or eliminating the protrusion and resistance originating from the flange formed at the interior surface of the air ducts having square or rectangular form in order to be used at said fields.
  • the purpose of the invention is to avoid formation of opening via the air duct and flange interior surfaces, which are left at the same level at the interior part of the air duct, and thus prevent dust etc. particles from holding on and accumulating inside the air duct.
  • the purpose of the invention is to prevent possible openings, which would occur at the parts where the flange is fitted as . a result of the pushing force of air, by prevention of removals from the open end parts where the flange is fitted.
  • the purpose is to provide impermeability in this way.
  • the invention is the air duct having air duct end parts, which are left open, added to each other via using flanges, and used in ventilation, pneumatic carrying, filtration etc. systems found in industrial or commercial facilities, and it is characterized in that; said air duct end part comprises an outwards inclined surface with a certain alpha angle.
  • the invention is a method for elimination of the protrusion and resistance originating from the flange formed at the interior surface of the air channels, and it is characterized in that; it comprises the operation steps of:
  • Figure 1 is the K-K1 section view of the air duct of the invention taken from figure-3 while the flange to be fitted at the open end of the air duct is in fitted position in a representative application of the invention.
  • Figure 1a is a close plan view taken from Figure 1.
  • Figure 2 is the section view of the prior art.
  • Figure 3 is the view of a part of the air duct of the invention, while the flange to be fitted at the air duct open end is in fitted position in a representative application of the invention.
  • Figure 3a is the view of the air duct of the invention and the air duct in the form of elbow called fittings, while the flange to be fitted at the air duct open end is in fitted position in a representative application of the invention.
  • Figure 4 is a perspective view from a different angle taken from the inner part of the drawing given in figure 1.
  • Figure 5 is the close plan view of a part of the drawing given in figure 3.
  • FIG 1 the K-K1 section view of the air duct (10) of the invention taken from figure-3 while the flange (20) to be fitted at the open end (11) of the air duct is in fitted position in a representative application of the invention, is given.
  • Figure 1a a close plan view taken from Figure 1 is given. Via the outwards inclined surface (12) inclined with a certain alpha angle, the level of the interior surface of the air duct body (10) and the level of the interior surface (21 ) of the flange are brought to the same alignment. In this way, the air comprising waste gas etc. passing through the air duct (10) smoothly passes without crashing the end part of the flange (20) found at this contact surface ( Figure 1 , 1 a). Since said flange
  • the level of the interior surface (21 ) of the flange and the level of the interior surface of the air duct (10) are not at the same alignment. Therefore, the interior surface (21) of the flange is left as a protrusion on the interior surface where the air continuously crashes with the air passage inside the air duct (10). Therefore, the air passing through the air duct (10) crashes at these end parts found at the flange interior surface (21 ). After crashing and then rising up, the air applies an upwards pushing force at the end part of the flange interior surface (21 ). At these parts, the flange interior surface (21 ) is opened and worn out. Dust etc. solid particles start to accumulate inside it. Although paste etc. adhesive sealing components are applied on this part, openings would occur in time with the impact of the temperature and the pushing force of air. In the flow direction of air, the flange interior surface (21 ) also has deformation and distortion in time.
  • the air duct (10) and the air duct (10) in the form of elbow called fittings are connected to each other through the flange parts (20) found on them;
  • Figure 4 the perspective view taken from the flange interior surface (21 ) and the air duct (10) interior surface of the drawing given in figure 1 is given.
  • Figure 5 the close plan view of a part of the drawing given in figure 3 is found.
  • Said fittings groups are elbow, T pipe, S pipe, and Conical Reduction parts.
  • Air duct end parts (1 1 ) enter into presses and they are bent outwards with a certain alpha angle.
  • Said air duct (10) generally has the shape of square or rectangular prism. Shapes change in the fittings groups according to way of connection. Said bending/distorting operation is applied on the air duct end part (1 1 ) on which the flange (20) used in standard would be fitted. The length of the part of said standard flange (20) engaging into the air duct (10) varies between 20-40 cm. Therefore, the size of engagement of the flange (20) to be fitted at the air duct end part (1 1 ) is determined at the beginning.
  • the outwards inclined surface (12) is formed by being bent in a short distance after an interval as long as the flange (20) engagement distances on the air duct end part (1 1 ).
  • Said formation operation is conducted via pulley or bending machine.
  • Formation via . pulley is conducted by passing the product between two pulleys with the previously given pulley forms according to the shape of bending of the product and the alpha angle.
  • Formation via bending machine is conducted by placing straight metal sheet between bending / folding machines and then giving the desired alpha angle. After the outwards inclined surface (12) formed with said operations, the shape of the air duct body (10) continues in a straight form.
  • the outwards inclined surface (12) and the end part are found at the same level with the body (10) interior surface of the air duct and they are embedded at this part. In this way, at the same time, without the need of changing the form of said standard flanges (20), via the outwards inclined surface (12) found on the air duct end part , (1.1), the above said problems are solved.
  • said air duct body (10) can have cylinder, triangle prism etc. various geometries. Since the novelty of the invention is applied on the air duct end part (1 1 ), changing of the geometry of the air duct body (10) would not affect the invention.
  • impermeable and fixator materials can be applied at the end parts of the flange interior surface (21 ) over said outwards inclined surface (12), which is the subject of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Duct Arrangements (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

The invention is the air duct (10) having air duct end parts (11), which are left open, added to each other via using flanges (20), and used in ventilation, pneumatic carrying, filtration etc. systems found in industrial or commercial facilities, and it is characterized in that; said air duct end part (11) comprises an outwards inclined surface (12) with a certain alpha angle. The invention is bringing the level of the interior surface of the air duct body (10) and the level of the interior surface (21) of the flange at the same alignment via configuration of said outwards inclined surface (12) with the purpose of eliminating the protrusion and the resistance originating from the flange (20) formed at the interior surface of the air channels (10).

Description

DESCRIPTION
METHOD OF ELIMINATING THE PROTRUSION AND RESISTANCE ORIGINATING FROM THE FLANGES FORMED AT THE INTERIOR SURFACES
OF AIR DUCTS
The Related Art
The invention relates to air ducts used in domestic and industrial devices and boilers operating with natural gas, fuel oil, LPG, and solid fuel, in gases produced by or stack gases emitted by industrial production devices, and in addition to these, in ventilation, pneumatic carrying, filtration systems, industrial or restaurant kitchen fume hoods found in industrial or commercial facilities.
The invention particularly relates to the method of reconfiguration of the air duct intended for reduction and elimination of the protrusion and resistance originating from the flanges formed at the interior surfaces of the air ducts, which are in the form of square or rectangle, and which are made of galvanized metal sheet convenient with the desired standards in order to be used at said fields.
The Prior Art
In order to be used at the sectors stated in the above related art part; flanges are produced in standard forms and structures. Flanges are fitted at the open ends of two air ducts and thus provide combination and extension of them. Said flanges are called "Ready Made Air Duct Flanges". Ready Made Air Duct Flanges are designed in order to provide maximum durability and ease of mounting in air ducts. It is made of galvanized metal sheet convenient with the desired standards. Metal sheet and channel placement joints of the flanges are jointed along the flange. In this way, the desired sealing is obtained. However, these jointing pastes can be worn and removed in time according to the hotness and the velocity of the air circulating in the air duct.
Examples can be given from the literature to the air ducts at which the flanges found in the prior art are fitted. One of these is the utility model with file no TR200402913 and name "Flange profiles and corner components". This invention relates to combination components used in combining of air ducts. Two interrelated flange profiles are used in the system. The flange profiles are cut 25 mm shorter than the air duct sizes. Frame is obtained by placement of the corner components between the flange profiles. The obtained frame is mounted by starting from a corner of the channel. Structure of the corner components is bent. The bends found at the corner components provide the corner components strongly fit at the flange profile. Holes are found at the corners of the corner components.
Another novelty is the utility model with file no TR200703858 and title "Air duct flange". The air duct flange of this invention is basically formed of two main parts, which are the completely galvanized corner component made of steel metal sheet and the flange profile. A square shaped air duct flange is obtained from four flange profiles which are cut 30 mm shorter than the dimensions of the air duct and by placement of four corner components at corner component housings.
As it is seen from the prior embodiments, a flange like a cap is fitted at the open ends of air ducts. Afterwards, flanges are fixed to each other and the length of the air duct is extended in a way that it would elongate towards the desired places. However, in the prior systems, some undesired situations occur in parts where the air duct is combined with the flange. At said combination part, the flange is removed in time via the impact of the pushing force of air, it cannot show resistance against air flow and it is open to entrance of dust at these parts.
These undesired situations are listed below.
In the prior system;
- since a surface for the dusts and particles carried with air is present to hold on inside the air duct, they accumulate at that point,
- dusts and particles accumulating at the interior part cause risk of fire due to the waste gas circulating inside and its hotness,
- dusts etc. substances accumulating inside the opening left between the air duct and the flange cause formation of bacteria, - again due to having opening between the air duct and the flange, it affects the air suction power and reduces impermeability,
- moreover, it causes decrease of air quality in the medium.
As a result, need has occurred for a flange fitting end preventing formation of space between the air duct and the flange originating from the standard structure of the air duct and the flange.
Brief Description of the Invention
The present invention relates to reconfiguration of the end parts of the straight channel and complete fittings group air ducts according to standard readymade flanges meeting the above said requirements, Eliminating all of the drawbacks and bringing about some additional advantages.
From the known status of the art, the purpose of the invention is to provide the flange have an interior surface completely at the same level with the interior surface of the air duct by concealing the flange at the air duct interior surface via the re-configured air duct mouth.
The purpose of the invention is to provide an air duct, which is re-configured with the purpose of reducing or eliminating the protrusion and resistance originating from the flange formed at the interior surface of the air ducts having square or rectangular form in order to be used at said fields.
The purpose of the invention is to avoid formation of opening via the air duct and flange interior surfaces, which are left at the same level at the interior part of the air duct, and thus prevent dust etc. particles from holding on and accumulating inside the air duct.
The purpose of the invention is to prevent possible openings, which would occur at the parts where the flange is fitted as . a result of the pushing force of air, by prevention of removals from the open end parts where the flange is fitted. The purpose is to provide impermeability in this way.
In order to achieve the above said purposes, the invention is the air duct having air duct end parts, which are left open, added to each other via using flanges, and used in ventilation, pneumatic carrying, filtration etc. systems found in industrial or commercial facilities, and it is characterized in that; said air duct end part comprises an outwards inclined surface with a certain alpha angle.
In order to achieve the above said purposes, the invention is a method for elimination of the protrusion and resistance originating from the flange formed at the interior surface of the air channels, and it is characterized in that; it comprises the operation steps of:
- bending of the air duct end part outwards with a certain alpha angle,
- formation of outwards inclined surface at the air duct end part as a result of bending of this part along the whole circumferential surface,
- configuration of said outwards inclined surface at the end of the engagement distance after calculation of the engagement distance of the flange to be engaged and fitted at the air duct end part, and ^
- via said bending/distorting operation, bringing the level of the interior surface of the air duct end part and the level of the interior surface of the flange at the same alignment.
The structural and characteristic features of the invention and all advantages will be understood better in detailed descriptions with the figures given below and with reference to the figures, and therefore, the assessment should be made taking into account said figures and detailed explanations.
Description of the Figures
For better understanding of the embodiment of present invention and its advantages with its additional components, it should be evaluated together with below described figures. Figure 1 , is the K-K1 section view of the air duct of the invention taken from figure-3 while the flange to be fitted at the open end of the air duct is in fitted position in a representative application of the invention.
Figure 1a is a close plan view taken from Figure 1.
Figure 2 is the section view of the prior art.
Figure 3 is the view of a part of the air duct of the invention, while the flange to be fitted at the air duct open end is in fitted position in a representative application of the invention.
Figure 3a is the view of the air duct of the invention and the air duct in the form of elbow called fittings, while the flange to be fitted at the air duct open end is in fitted position in a representative application of the invention.
Figure 4 is a perspective view from a different angle taken from the inner part of the drawing given in figure 1.
Figure 5 is the close plan view of a part of the drawing given in figure 3.
Reference Numbers
10. Air duct / body
11. Air duct end part
12. Outwards inclined surface
20. Flange
21. Flange interior surface
22. Flange exterior surface
a Alpha angle
Detailed Description of the Invention
In this detailed description, the preferred embodiments of the air duct end part (11), which is re-configured according to the standard available flanges (20), will only be disclosed for better understanding of the subject, and will not form any limiting effect.
In Figure 1 , the K-K1 section view of the air duct (10) of the invention taken from figure-3 while the flange (20) to be fitted at the open end (11) of the air duct is in fitted position in a representative application of the invention, is given. In Figure 1a, a close plan view taken from Figure 1 is given. Via the outwards inclined surface (12) inclined with a certain alpha angle, the level of the interior surface of the air duct body (10) and the level of the interior surface (21 ) of the flange are brought to the same alignment. In this way, the air comprising waste gas etc. passing through the air duct (10) smoothly passes without crashing the end part of the flange (20) found at this contact surface (Figure 1 , 1 a). Since said flange
(20) is fitted by being engaged to the air duct end part (1 1 ), the flange interior surface
(21 ) is left at the interior part of the air duct body (10) while the flange exterior surface
(22) is left at the exterior part.
However, in the prior art shown in figure 2; the level of the interior surface (21 ) of the flange and the level of the interior surface of the air duct (10) are not at the same alignment. Therefore, the interior surface (21) of the flange is left as a protrusion on the interior surface where the air continuously crashes with the air passage inside the air duct (10). Therefore, the air passing through the air duct (10) crashes at these end parts found at the flange interior surface (21 ). After crashing and then rising up, the air applies an upwards pushing force at the end part of the flange interior surface (21 ). At these parts, the flange interior surface (21 ) is opened and worn out. Dust etc. solid particles start to accumulate inside it. Although paste etc. adhesive sealing components are applied on this part, openings would occur in time with the impact of the temperature and the pushing force of air. In the flow direction of air, the flange interior surface (21 ) also has deformation and distortion in time.
In Figure 3, the upper perspective view of a part of the air duct (10) of the invention is given, while the flange (20) to be fitted at the air duct end part (1 1 ) is in fitted position. As it would be seen from the given figure, the flange (20) has mounting holes (reference not given) formed on the corner parts. With another air duct in this form, two flanges (20) are fixed by being connected to each other again through the flange (20) of the other air duct (10). As it would also be seen in Figure 3a, the air duct (10) and the air duct (10) in the form of elbow called fittings are connected to each other through the flange parts (20) found on them;; In Figure 4, the perspective view taken from the flange interior surface (21 ) and the air duct (10) interior surface of the drawing given in figure 1 is given. In Figure 5, the close plan view of a part of the drawing given in figure 3 is found. Except the straight air ducts (10), the air ducts (10) having different forms and performing the connection task such as the air duct (10) shown in figure 3a having elbow form are called "fittings". Said fittings groups are elbow, T pipe, S pipe, and Conical Reduction parts.
Air duct end parts (1 1 ) enter into presses and they are bent outwards with a certain alpha angle. Said air duct (10) generally has the shape of square or rectangular prism. Shapes change in the fittings groups according to way of connection. Said bending/distorting operation is applied on the air duct end part (1 1 ) on which the flange (20) used in standard would be fitted. The length of the part of said standard flange (20) engaging into the air duct (10) varies between 20-40 cm. Therefore, the size of engagement of the flange (20) to be fitted at the air duct end part (1 1 ) is determined at the beginning. The outwards inclined surface (12) is formed by being bent in a short distance after an interval as long as the flange (20) engagement distances on the air duct end part (1 1 ). Said formation operation is conducted via pulley or bending machine. Formation via. pulley is conducted by passing the product between two pulleys with the previously given pulley forms according to the shape of bending of the product and the alpha angle. Formation via bending machine is conducted by placing straight metal sheet between bending / folding machines and then giving the desired alpha angle. After the outwards inclined surface (12) formed with said operations, the shape of the air duct body (10) continues in a straight form. Therefore, via the outwards inclined surface (12), the flange interior surface (21 ) and the end part are found at the same level with the body (10) interior surface of the air duct and they are embedded at this part. In this way, at the same time, without the need of changing the form of said standard flanges (20), via the outwards inclined surface (12) found on the air duct end part,(1.1), the above said problems are solved.
In the preferred embodiments of the invention, said air duct body (10) can have cylinder, triangle prism etc. various geometries. Since the novelty of the invention is applied on the air duct end part (1 1 ), changing of the geometry of the air duct body (10) would not affect the invention.
In the preferred embodiments of the invention/ paste etc. impermeable and fixator materials can be applied at the end parts of the flange interior surface (21 ) over said outwards inclined surface (12), which is the subject of the invention.

Claims

1. The invention is the air duct (10) having air duct end parts (1 1 ), which are left open, added to each other via using flanges (20), and used in ventilation, pneumatic carrying, filtration etc. systems found in industrial or commercial facilities, and it is characterized in that; said air duct end part (1 1 ) comprises an outwards inclined surface (12) with an alpha angle.
2. An air duct (10) according to claim 1 , and it is characterized in that; the level of the interior surface of the air duct end part (1 1 ) and the level of the interior surface (21 ) of the flange are at the same alignment.
3. The invention is a method for elimination of the protrusion and resistance originating from the flange (20) formed at the interior surface of the air channels (10), and it is characterized in that; it comprises the operation steps of:
- bending of the air duct end part (1 1) outwards with an alpha angle,
- formation of outwards inclined surface (12) at the air duct end part (1 1 ) as a result of bending of this part along the whole circumferential surface,
- configuration of said outwards inclined surface (12) at the end of the engagement distance after calculation of the engagement distance of the flange (20) to be engaged and fitted at the air duct end part (1 1 ), and
- via said bending/distorting operation, bringing the level of the interior surface of the air duct end part (1 1 ) and the level ρή the interior surface (21 ) of the flange at the same alignment.
EP10779066A 2010-04-01 2010-09-21 Method of eliminating the protrusion and resistance originating from the flanges formed at the interior surfaces of air ducts Withdrawn EP2553348A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2010/02529A TR201002529A2 (en) 2010-04-01 2010-04-01 Method of eliminating the protrusion and resistance caused by the flange formed on the inner surface of the air ducts.
PCT/TR2010/000182 WO2011123078A1 (en) 2010-04-01 2010-09-21 Method of eliminating the protrusion and resistance originating from the flanges formed at the interior surfaces of air ducts

Publications (1)

Publication Number Publication Date
EP2553348A1 true EP2553348A1 (en) 2013-02-06

Family

ID=43502552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10779066A Withdrawn EP2553348A1 (en) 2010-04-01 2010-09-21 Method of eliminating the protrusion and resistance originating from the flanges formed at the interior surfaces of air ducts

Country Status (3)

Country Link
EP (1) EP2553348A1 (en)
TR (1) TR201002529A2 (en)
WO (1) WO2011123078A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558892A (en) * 1983-11-16 1985-12-17 Quikduc Of California, Inc. Duct assembly system
US5103872A (en) * 1990-09-18 1992-04-14 Jyh Long Chang Structure of air conduit flange and shock-absorbing connector
DE202006006139U1 (en) * 2006-04-15 2006-07-06 Lta Lufttechnische Komponenten Zweigniederlassung Der Berlinerluft. Technik Gmbh Channel for conducting air has a flange section locked into its casing's metal sheet and locking grooves rolled into the casing's metal sheet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT383516B (en) * 1985-06-12 1987-07-10 Prager Franz Kg Method for shaping connecting flanges on sheet-metal blanks of pipeline sections and also device for implementing it
GB2276208B (en) * 1993-03-20 1997-03-12 Nuaire Ltd Fan casing
DE10315109B4 (en) * 2003-04-02 2005-11-17 Smitka-Profex Gmbh Corner bracket for a flange connection for air conditioning ducts and flange profile and a connection method for this
KR100597567B1 (en) * 2004-09-17 2006-07-10 주식회사 진웅테크놀러지 Pocket flange of a duct

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558892A (en) * 1983-11-16 1985-12-17 Quikduc Of California, Inc. Duct assembly system
US5103872A (en) * 1990-09-18 1992-04-14 Jyh Long Chang Structure of air conduit flange and shock-absorbing connector
DE202006006139U1 (en) * 2006-04-15 2006-07-06 Lta Lufttechnische Komponenten Zweigniederlassung Der Berlinerluft. Technik Gmbh Channel for conducting air has a flange section locked into its casing's metal sheet and locking grooves rolled into the casing's metal sheet

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011123078A1 *

Also Published As

Publication number Publication date
TR201002529A2 (en) 2011-08-22
WO2011123078A1 (en) 2011-10-06

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