CA1105521A - Air-conducting passages - Google Patents
Air-conducting passagesInfo
- Publication number
- CA1105521A CA1105521A CA326,944A CA326944A CA1105521A CA 1105521 A CA1105521 A CA 1105521A CA 326944 A CA326944 A CA 326944A CA 1105521 A CA1105521 A CA 1105521A
- Authority
- CA
- Canada
- Prior art keywords
- limb
- connection according
- latch
- duct
- 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.)
- Expired
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Duct Arrangements (AREA)
- Building Environments (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention relates to a device for holding the edge of inner insulating mats which extends transversely to the longitud-inal direction of an air-conducting passage in the area of a frame-piecè of a prefabricated gland, where the metal frame-piece has a stay running inside the appropriate wall of the air-conducting passage and abutting the latte. A cross-conncetion is provided which, in the ready-assembled state, connects an inner stay of the frame-piece, resting on the outside of the wall, firmly to the latter. The inner stay is bent back on itself with multiple bends so as to form a pocket which is open in the longitudinal direction of the air-conducting passage and which has a catch strip extending transversely over the entire length of the pocket and pointing towards the inner stay.
A plastic holding strip is provided, whose heat-conducting value is considerably below that of the metal of the frame-piece, and whose cross-section is large enough to hold the edge of the insulating mat. A part of the holding strip has a catch strip which is complementary to the catch strip of the pocket and which is flexibly inserted in the pocket.
The invention relates to a device for holding the edge of inner insulating mats which extends transversely to the longitud-inal direction of an air-conducting passage in the area of a frame-piecè of a prefabricated gland, where the metal frame-piece has a stay running inside the appropriate wall of the air-conducting passage and abutting the latte. A cross-conncetion is provided which, in the ready-assembled state, connects an inner stay of the frame-piece, resting on the outside of the wall, firmly to the latter. The inner stay is bent back on itself with multiple bends so as to form a pocket which is open in the longitudinal direction of the air-conducting passage and which has a catch strip extending transversely over the entire length of the pocket and pointing towards the inner stay.
A plastic holding strip is provided, whose heat-conducting value is considerably below that of the metal of the frame-piece, and whose cross-section is large enough to hold the edge of the insulating mat. A part of the holding strip has a catch strip which is complementary to the catch strip of the pocket and which is flexibly inserted in the pocket.
Description
liG~iS21 Previous types of flange connections have been described, claimed and illustrated in my V.S. Patent No. 3,712, 650 which issued on January 23rd, 1973. The present invention, relates, however, to a flange connection for an air conditioning duct where the latter, either because of sound or heat insulation, incorporated insulation on the interior of the walls of the duct.
Securing such insulation to elongated portions of the ducts poses very little problems but the same cannot be said where the insulation is incorporated in the flanges connecting a pair of ducts together. Hence, it is the object of the present invention to overcome any previously known disadvantages and to provide a flange connection which is of relatively simple construction and which is inexpensive to manufacture.
Accordingly, the present invention relates to a flange connection for maintaining the edge of an insulating mat of an air-conditioning duct _ situ and adjacent a flange connecting a pair of such duct members together, said connection including primary and secondary interlocking and cooperating members so disposed and related that at least three pockets are formed, the first of said pockets receiving a portion of said flange, a second of said pockets receiviny an edge of said mat, and the third of said pockets being located intermediate the first and second pockets and containing means whereby said primary and secondary members are interlocked together.
The invention is illustrated, by way of example, in the accompanying drawings in which:
Figure 1 is a part-sectional elevation of a first type ~,~
B -1 ~
5Zï
of flange connection; and Figures 2 and 3 are diagrammatic cross-sections of two alternative forms of the invention.
Referrin~ to the drawings, and in particular to Figure 1, an air-conditioning duct, indicated generally at 11, includes four spaced sheet-metal walls 12 but as each is the mirror image of the remainder, only one such wall is shown in Figure 1 and it is that end of the duct capable of being connected to an adjacent and substantially aligned duct that is illustrated. The end of each wall is provided with a flange or framing piece including a pair of interlocking and cooperating members a primary one of which is indicated generally at 13 and which contains a reinforcement member 16.
Member 13 forms a metal stay,which is bent to provide many limbs,disposed about one end of the wall 12. A first limb
Securing such insulation to elongated portions of the ducts poses very little problems but the same cannot be said where the insulation is incorporated in the flanges connecting a pair of ducts together. Hence, it is the object of the present invention to overcome any previously known disadvantages and to provide a flange connection which is of relatively simple construction and which is inexpensive to manufacture.
Accordingly, the present invention relates to a flange connection for maintaining the edge of an insulating mat of an air-conditioning duct _ situ and adjacent a flange connecting a pair of such duct members together, said connection including primary and secondary interlocking and cooperating members so disposed and related that at least three pockets are formed, the first of said pockets receiving a portion of said flange, a second of said pockets receiviny an edge of said mat, and the third of said pockets being located intermediate the first and second pockets and containing means whereby said primary and secondary members are interlocked together.
The invention is illustrated, by way of example, in the accompanying drawings in which:
Figure 1 is a part-sectional elevation of a first type ~,~
B -1 ~
5Zï
of flange connection; and Figures 2 and 3 are diagrammatic cross-sections of two alternative forms of the invention.
Referrin~ to the drawings, and in particular to Figure 1, an air-conditioning duct, indicated generally at 11, includes four spaced sheet-metal walls 12 but as each is the mirror image of the remainder, only one such wall is shown in Figure 1 and it is that end of the duct capable of being connected to an adjacent and substantially aligned duct that is illustrated. The end of each wall is provided with a flange or framing piece including a pair of interlocking and cooperating members a primary one of which is indicated generally at 13 and which contains a reinforcement member 16.
Member 13 forms a metal stay,which is bent to provide many limbs,disposed about one end of the wall 12. A first limb
2~ extends outwardly from wall 12 at a substantially acute angle and is then bent to form a further limb 27 extending along, and in face-to-face contact with the outer face of wall 12 a predetermined distance. This limb 27 is then bent to form an outwardly extending limb 26 which, in turn, is bent at 24 to form limb 23 extending normal to wall 12. Limb 23 is then bent to form a short limb 22 which extends into another limb 19 spaced from, but parallel with, limb 23, the short limh 22 connecting the outer ends of limbs 23 and 19.
Limb 19 is then bent into limb 17 extending along the inner face of wall 12. Thus, the end o~ the metal wall 12 is located ~etween limbs 17 and 27 and the limbs 26, 23, 22, 19 and 17 define a first pocket 68 ~dapted to receive the metal B
iS;Zl reinforcing strip or member 16 therein.
Limb 17 is then bent at 29 to form a further limb 32 whi.ch extends part-way along limb 17 (and in face-to-face contact therewith) until it is bent again at 33 before again extending parallel to, but spaced from, limb 17 as a yet further limb 36 with a latch 37 formed on the free terminal end thereof, the area defined by limbs 17, 33 and 36 constituting an intermediate pocket 34 of substantially U-shaped cross-section.
A secondary member, indicated generally at 43, is also of substantially U-shaped cross-section and is defined.by a pair of spaced and parallel limbs 44,48, interconnected by a limb 47, the terminal end of limb 44 being slightly bent outwardly at 46.
Limb 48 is located in the intermediate pocket 34 and is serrated at 51 in order to serve as a cooperating detent for latch 37 whereby said detent and latch serve as means whereby the primary and secondary members 13 and 43 are interlocked together.
An insulating mat, indicated generally at 53 and provided with inner and outer plies 54,56 separated by a quantity of loose insulating material 57, is located to the rear of the metal wall 12, with the outer ply 56 being in substantially face-to-face contact with the inner face of said wall, the ~erminal end 58 of the mat being compressed within a second pocket 62 also of substantially U-shaped cross-section and formed by limbs 44 and 47 of secondary member 43 and the limbs 32, 33 and 36 of primary member 13.
As will be seen from the arrangement shown in Figure 1, the open end of intermediate pocket 34 faces in the same direction as the outer end of the duct ~.~.Jhereas the open end of the second
Limb 19 is then bent into limb 17 extending along the inner face of wall 12. Thus, the end o~ the metal wall 12 is located ~etween limbs 17 and 27 and the limbs 26, 23, 22, 19 and 17 define a first pocket 68 ~dapted to receive the metal B
iS;Zl reinforcing strip or member 16 therein.
Limb 17 is then bent at 29 to form a further limb 32 whi.ch extends part-way along limb 17 (and in face-to-face contact therewith) until it is bent again at 33 before again extending parallel to, but spaced from, limb 17 as a yet further limb 36 with a latch 37 formed on the free terminal end thereof, the area defined by limbs 17, 33 and 36 constituting an intermediate pocket 34 of substantially U-shaped cross-section.
A secondary member, indicated generally at 43, is also of substantially U-shaped cross-section and is defined.by a pair of spaced and parallel limbs 44,48, interconnected by a limb 47, the terminal end of limb 44 being slightly bent outwardly at 46.
Limb 48 is located in the intermediate pocket 34 and is serrated at 51 in order to serve as a cooperating detent for latch 37 whereby said detent and latch serve as means whereby the primary and secondary members 13 and 43 are interlocked together.
An insulating mat, indicated generally at 53 and provided with inner and outer plies 54,56 separated by a quantity of loose insulating material 57, is located to the rear of the metal wall 12, with the outer ply 56 being in substantially face-to-face contact with the inner face of said wall, the ~erminal end 58 of the mat being compressed within a second pocket 62 also of substantially U-shaped cross-section and formed by limbs 44 and 47 of secondary member 43 and the limbs 32, 33 and 36 of primary member 13.
As will be seen from the arrangement shown in Figure 1, the open end of intermediate pocket 34 faces in the same direction as the outer end of the duct ~.~.Jhereas the open end of the second
- 3 -ll~SSZ~
pocket 62 faces away from the open end of the duct. Limbs 27, 17, 32 are spot welded together as at 55.
A quite similar, but slightly different arrangement is shown in Figure 2.
In this arrangement, as well as that shown in Figure 3 and to be discussed later, four pockets or channels are formed, i.e. a first pocket 68, a second pocket 62, a third pocket 34 and a fourth pocket 64. However, both primary and secondary mem~ers 13 and 43 are formed differently to those shown in the arrangement of Figure 1.
The primary member 13 of Figure 2 has an additional limb 63, while the ends of limbs 17 and 32, which are in face-to-face contact with one another, form the latch 37. Limb 63 is parallel with and spaced from, limbs 17 and 32 so as to form the third pocket 34. On the other hand, secondary members 43 shown in the arrangement of Figure 2 also has an additional limb 44' which is intermediate limbs 44 and 48 so as to form a pair of parallel pockets, namely the second 62 and a fourth pocket 64. Limb 48, located in the third pocket 34, is again serrated at 51 to serve as a detent for latch 37. In this arrangement, the second, third and fourth pockets are each of substantially U-shaped cross-section with the second and third pockets 34, 62 facing away from the adjacent end of the duct where the fourth pocket 64 faces towards the said end and contains the latch 37.
In the arrangement shown in Figure 3, limbs 17 and 32 of the primary member 13 are in face-to-face contact with one another and spaced from parallel limb 63 on the free terminal end of which the latch 37 is formed.
52~
Each form of secondary member 43 is of injection moulded plastic having considerable less heat-conducting resistallce than the primary member 13.
In operation, the secondary member 43 of each form of the inventi.on is forced over the terminal end 58 of the insulating mat 53 whereby said end will be compressed and, if desired, the end can be cemented within the second pocket 62 for additional s.ability.
pocket 62 faces away from the open end of the duct. Limbs 27, 17, 32 are spot welded together as at 55.
A quite similar, but slightly different arrangement is shown in Figure 2.
In this arrangement, as well as that shown in Figure 3 and to be discussed later, four pockets or channels are formed, i.e. a first pocket 68, a second pocket 62, a third pocket 34 and a fourth pocket 64. However, both primary and secondary mem~ers 13 and 43 are formed differently to those shown in the arrangement of Figure 1.
The primary member 13 of Figure 2 has an additional limb 63, while the ends of limbs 17 and 32, which are in face-to-face contact with one another, form the latch 37. Limb 63 is parallel with and spaced from, limbs 17 and 32 so as to form the third pocket 34. On the other hand, secondary members 43 shown in the arrangement of Figure 2 also has an additional limb 44' which is intermediate limbs 44 and 48 so as to form a pair of parallel pockets, namely the second 62 and a fourth pocket 64. Limb 48, located in the third pocket 34, is again serrated at 51 to serve as a detent for latch 37. In this arrangement, the second, third and fourth pockets are each of substantially U-shaped cross-section with the second and third pockets 34, 62 facing away from the adjacent end of the duct where the fourth pocket 64 faces towards the said end and contains the latch 37.
In the arrangement shown in Figure 3, limbs 17 and 32 of the primary member 13 are in face-to-face contact with one another and spaced from parallel limb 63 on the free terminal end of which the latch 37 is formed.
52~
Each form of secondary member 43 is of injection moulded plastic having considerable less heat-conducting resistallce than the primary member 13.
In operation, the secondary member 43 of each form of the inventi.on is forced over the terminal end 58 of the insulating mat 53 whereby said end will be compressed and, if desired, the end can be cemented within the second pocket 62 for additional s.ability.
Claims (12)
1. A flange connection for maintaining the edge of an insulating mat of an air-conditioning duct in situ and adjacent a flange connecting a pair of such duct members together, said connection including primary and secondary interlocking and cooperating members (13, 43) so disposed and related that at least three pockets are formed, the first (68) of said pockets receiving a portion 16 of said flange, a second (62) of said pockets receiving an edge of said mat (53), and the third (34) of said pockets being located intermediate the first (68) and second pockets (62) and containing means (37, 51) whereby said primary and secondary members are interlocked together.
2. A connection according to Claim 1 wherein said interlocking means include a serrated limb (48) on said secondary member (43) adapted to cooperate with a latch (37) on an adjacent limb (36) of said primary member (13).
3. A connection according to Claim 2 wherein the intermediate pocket (34) is of substantially U-shaped cross-section and is defined by a pair of interconnected, spaced and parallel limbs (17, 32) of said primary member (13).
4. A connection according to claim 3 wherein the latch (37) is located adjacent the free terminal end of one (36) of said limbs of said primary member (13) and the open end of said intermediate pocket (34) faces towards the adjacent end of the duct.
5. A connection according to Claim 4 wherein said secondary member (43) includes a channel of substantially U-shaped cross-section defined by a pair of interconnected, spaced and parallel limbs (44, 48), one (48) of which is serrated to form a latch detent (51) and which extends into said intermediate pocket (34) and cooperates with said latch (37).
6. A connection according to Claim 5 wherein the second pocket (62) is defined by the remaining limb of said secondary member (43) and the latched limb (36) of said primary member (13), said second pocket (62) facing away from the end of the adjacent duct.
7. A connection according to Claim 2 wherein the intermediate pocket (34) is of substantially U-shaped cross-section and is defined by three parallel interconnected limbs (17, 32, 63), a selected pair (17, 32) of which are in face-to-face contact with one another and the remaining one (63) of which is spaced from said pair thereof, the open end of said pocket (34) facing away from the end of said duct.
8. A connection according to claim 7 wherein the ends of said selected pair (32, 63) of limbs are interconnected to form said latch (37).
9. A connection according to Claim 7 wherein the free terminal end of said remaining one limb (63) forms said latch (37).
10. A connection according to Claim 7 or 8 wherein the secondary member (43) includes a pair of oppositely facing channels each of substantially U-shaped cross-section defined by three interconnected spaced and parallel limbs, one outer said limb (48) being serrated to form a latch detent (51) extending into said intermediate pocket (34), while the remaining outer limb (44) and the intermediate limb (44') form said second channel, facing away from the end of the duct to define a fourth pocket (64) into which the latched limb (36) extends.
11. A connection according to Claim 5 wherein said second pocket (62) receives said edge of said mat under compression.
12. A connection according to Claim 10 wherein said second pocket (62) receives said edge of said mat under compression.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA326,944A CA1105521A (en) | 1979-05-04 | 1979-05-04 | Air-conducting passages |
| GB8014410A GB2051216B (en) | 1979-05-04 | 1980-05-01 | Clamp device for holding the edges of panels |
| DE19803016860 DE3016860A1 (en) | 1979-05-04 | 1980-05-02 | DEVICE FOR AIR GUIDING CANALS |
| SG17586A SG17586G (en) | 1979-05-04 | 1986-02-26 | Clamp device for holding the edges of panels |
| HK6188A HK6188A (en) | 1979-05-04 | 1988-01-21 | Clamp device for holding the edges of panels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA326,944A CA1105521A (en) | 1979-05-04 | 1979-05-04 | Air-conducting passages |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1105521A true CA1105521A (en) | 1981-07-21 |
Family
ID=4114130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA326,944A Expired CA1105521A (en) | 1979-05-04 | 1979-05-04 | Air-conducting passages |
Country Status (5)
| Country | Link |
|---|---|
| CA (1) | CA1105521A (en) |
| DE (1) | DE3016860A1 (en) |
| GB (1) | GB2051216B (en) |
| HK (1) | HK6188A (en) |
| SG (1) | SG17586G (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3313235A1 (en) * | 1983-04-13 | 1984-10-18 | Georg 7416 Reutlingen Mez | FLANGE CONNECTION |
| ZA845730B (en) * | 1984-01-31 | 1986-04-30 | Rafael Garcia | Flange connections for ducting |
| DE4023470C2 (en) * | 1990-02-17 | 1994-05-19 | Meinig Metu System | Butt joint between two air duct sections made of sheet metal |
| SG10201606130VA (en) | 2016-07-25 | 2018-02-27 | Instad Pre Fabrication Pte Ltd | A Duct Panel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT306982B (en) * | 1969-12-09 | 1973-05-10 | Mez Georg | Prefabricated connection flange for duct sections of rectangular air conditioning ducts |
-
1979
- 1979-05-04 CA CA326,944A patent/CA1105521A/en not_active Expired
-
1980
- 1980-05-01 GB GB8014410A patent/GB2051216B/en not_active Expired
- 1980-05-02 DE DE19803016860 patent/DE3016860A1/en active Granted
-
1986
- 1986-02-26 SG SG17586A patent/SG17586G/en unknown
-
1988
- 1988-01-21 HK HK6188A patent/HK6188A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3016860A1 (en) | 1980-11-13 |
| DE3016860C2 (en) | 1987-02-26 |
| HK6188A (en) | 1988-01-29 |
| GB2051216B (en) | 1983-01-26 |
| GB2051216A (en) | 1981-01-14 |
| SG17586G (en) | 1987-07-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |