GB1577362A - Flues - Google Patents
Flues Download PDFInfo
- Publication number
- GB1577362A GB1577362A GB392177A GB392177A GB1577362A GB 1577362 A GB1577362 A GB 1577362A GB 392177 A GB392177 A GB 392177A GB 392177 A GB392177 A GB 392177A GB 1577362 A GB1577362 A GB 1577362A
- Authority
- GB
- United Kingdom
- Prior art keywords
- flue
- sleeve
- duct
- adaptor
- break
- 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/12—Devices for fastening the top or terminal to chimney, shaft, or flue
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
Description
(54) IMPROVEMENTS IN AND RELATING TO FLUES
(71) We, THE HENDERSON SAFETY
TANK CO. LIMITED, a British Company of lb/lc Queensway (Off Purley Way), Croydon, Surrey, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to improvements in flues and particularly the connection of a flue to a flue outlet assembly from which flue gases escape.
It is known to provide a flue outlet in the roof of a building using a ridge tile which is especially adapted for this purpose, the ridge tile having an inlet for communicating with the flue and one or more outlet openings communicating with the exterior.
The inlet of the ridge tile is connected to an adaptor which is, in turn, connected to the flue. The adaptor is selected firstly in dependence on the internal diameter of the flue and then in dependence on the type of flue used, for example an asbestos cement flue, a twin wall flue or a single wall flue, all of which have different wall thicknesses and different methods of assembly. The ridge tile and adaptor are put in place when the roof is built so that the type and length of flue to be used must be determined at this point. Subsequently the appliance requiring the flue is installed and its flue connected to the adaptor. It is frequently found that at the time of installation of the appliance a different flue is preferred to that for which the adaptor is intended.Either the originally intended flue must be used or modifications must be made on site to the flue adaptor to permit its connection to the preferred flue. Additionally, because the distance from the adaptor to the appliance varies from one building to the next, and may not be equal to a whole number of flue sections, flue sections have to be cut to the required length or flue connection elements of a length less than that of a flue section have to be provided to enable connection of the flue to the adaptor.
According to the present invention there is provided a flue adaptor for connecting a flue outlet assembly to the end of a flue, the adaptor comprising a duct having one end for introduction into the end of the flue to be connected to the outlet assembly, the other end being adapted for connection to the flue outlet assembly, a sleeve surrounding the duct and for surrounding the end of the flue, the sleeve being fixed to the duct and at least part thereof having a variable diameter to accommodate varying outside diameters of flue, and means for clamping the sleeve against the flue.
In a preferred embodiment, that end of the sleeve remote from one end of the duct is fixed to the duct and the sleeve has at least one longitudinally extending break to permit variation in the diameter of at least the other end of the sleeve. The edges of the sleeve at the break may be overlapped and the clamping means preferably take the form of a quick action catch, e.g. a worm clip or toggle catch, which may be mounted on the sleeve. Clamping may alternatively be effected by tightening the sleeve round the end of the flue and rivetting the overlapped edges or using a self tapping screw or similar fixing means.
The present invention will be more fully understood from the following description of embodiments thereof, given by way of exexample only, with reference to the accom paning drawings, in which:
Figure 1 is a vertical section through a ridge tile with an embodiment of an adaptor according to the present invention: and
Figures 2, 3 and 4 are sections on the line Il-Il of Figure 1 showing different embodiments of the sleeve of the adaptor of
Figure 1.
As shown in Figure 1, the ridge tile has an inlet 2a which is connected to a flue adaptor 3 and two outlets 2b opening one to each side of the ridge. The adaptor 3 comprises a circular section duct 4 connected to a generally frusto-conical portion 5 of generally rectangular section extending from the duct 4 and terminating in a flange 5a by which it is connected to the ridge tile 1 with the flange Sa surrounding the ridge tile inlet 2a.
Conventional flue adaptors are designed for assembly with only one type of flue, e.g. with an asbestos cement flue, a metal twin wall flue or a metal single wall flue, and can only be used with that one type of flue.
To permit the adaptor according to the present invention to be used with the different types of flue, the duct 4 is dimensioned to be received in the end of any type of flue with a particular internal diameter and is provided with an external clamping sleeve 7 which has a variable diameter at least at its lower end and is intended to surround the end of a flue and to be clamped against the flue to hold the flue in place.
The sleeve 7 is fixed to the duct 4 in such a way as to allow variation in the diameter of the sleeve at least at its lower end. As shown in Figure 1, the upper end of the duct 4 is provided with a downwardly opening generally U-shaped ring 8 having an inner arm longer than its outer arm. The inner arm of the ring is rivetted to the duct 4 at a level below the lower edge of the outer arm for ease of rivetting. The upper end of the sleeve 7 is then rivetted to the outer arm of the ring 8 at, for example, 3 angularly spaced points.The ring 8 may alternatively have a Z shaped section or may be replaced by a plurality of brackets of U or
Z section spaced around the periphery of the duct, the annular gap between the duct and sleeve may then be closed by a ring of non-combustible material, e.g. fibre glass or metal, attached to the brackets, e.g. by rivetting or spot welding.
The sleeve 7 is provided with at least one longitudinal break to permit variation in diameter thereof. As shown in Figures 2 to 4 a single break is provided extending the full length of the sleeve.
As shown in Figure 2, the edges of the break in the sleeve are overlapped to a greater or lesser extent depending on the thickness of the flue to be accommodated between the duct 4 and sleeve 7. To provide a degree of sealing between the overlapped edges of the sleeve 7, one edge may be bent in the form of an S to surround the other edge, as shown in Figure 3. Alternatively the edges of the sleeve at the break may be spaced apart, e.g. as shown in Figure 4.
Clamping of the sleeve 7 on to a flue may be effected by any suitable means, for example by a worm clip 9, Figure 1, which may be attached to the lower end of the sleeve 7 or may be separate therefrom, or a toggle catch 10, Figure 2, mounted on the sleeve 7. Alternatively where the edges of the sleeve at the break are overlapped they
may be rivetted when the sleeve is clamped
round the end of the flue. Where the edges
of the sleeve at the break are spaced apart, the gap between the edges may be wedge shaped and downwardly convergent and the edges outwardly turned for engagement with a correspondingly wedge shaped plate 11 with inwardly turned edges, the plate 11 being pushed up the sleeve 7 until the edges of the sleeve have been brought together to an extent that the flue is clamped by the sleeve.
In use of the above described adaptor, the end of the flue 6 is slid over the lower end of the duct 4 and into the gap between the duct 4 and sleeve 7. The sleeve is then clamped round the end of the flue. Where a metal single wall flue is used, the end of the flue may simply be rivetted to the end of duct 4 and the clamping sleeve 7 not used.
To enable this rivetting to be effected easily, the duct 4 is made longer than the sleeve 7.
The duct 4 and sleeve 7 are of sufficient length that no cutting of a flue section to fit the gap between the last flue section and the adaptor is required, the overlap between the last flue section and the duct being merely adjusted to accommodate any excess length of flue section.
There is thus provided a flue adaptor which can be used with a range of flue pipes having a predetermined internal diameter, which is determined initially by the appliance to which the flue is to be connected.
The adaptor is simple to manufacture and easy to use and avoids the need for preselection of a particular type of flue and for cutting of flue sections to fit the gap between the appliance and adaptor.
WHAT WE CLAIM IS:- 1. A flue adaptor for connecting a flue outlet assembly to the end of a flue, the adaptor comprising a duct having one end for introduction into the end of the flue to be connected to the outlet assembly, the other end being adapted for connection to the flue outlet assembly, a clamping sleeve surrounding the duct and for surrounding the end of the flue and being clamped, thereto the sleeve being fixed to the duct and at least part thereof having a variable diameter to accommodate varying outside diameters of flue.
2. An adaptor as claimed in claim 1, wherein the sleeve Is fixed at its one end remote from the one end of the duct to the duct by bracket means spacing the sleeve from the duct, at least the other end of the sleeve having a variable diameter.
3. An adaptor as claimed in either claim
1 or claim 2, wherein the sleeve is provided with at least one longitudinally extending break therein to permit variation in the diameter thereof at least in the region of the or each break.
4. An adaptor as claimed in claim 3, wherein a single break is provided extending the full length of the sleeve.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (9)
1 with the flange Sa surrounding the ridge tile inlet 2a.
Conventional flue adaptors are designed for assembly with only one type of flue, e.g. with an asbestos cement flue, a metal twin wall flue or a metal single wall flue, and can only be used with that one type of flue.
To permit the adaptor according to the present invention to be used with the different types of flue, the duct 4 is dimensioned to be received in the end of any type of flue with a particular internal diameter and is provided with an external clamping sleeve 7 which has a variable diameter at least at its lower end and is intended to surround the end of a flue and to be clamped against the flue to hold the flue in place.
The sleeve 7 is fixed to the duct 4 in such a way as to allow variation in the diameter of the sleeve at least at its lower end. As shown in Figure 1, the upper end of the duct 4 is provided with a downwardly opening generally U-shaped ring 8 having an inner arm longer than its outer arm. The inner arm of the ring is rivetted to the duct 4 at a level below the lower edge of the outer arm for ease of rivetting. The upper end of the sleeve 7 is then rivetted to the outer arm of the ring 8 at, for example, 3 angularly spaced points.The ring 8 may alternatively have a Z shaped section or may be replaced by a plurality of brackets of U or
Z section spaced around the periphery of the duct, the annular gap between the duct and sleeve may then be closed by a ring of non-combustible material, e.g. fibre glass or metal, attached to the brackets, e.g. by rivetting or spot welding.
The sleeve 7 is provided with at least one longitudinal break to permit variation in diameter thereof. As shown in Figures 2 to 4 a single break is provided extending the full length of the sleeve.
As shown in Figure 2, the edges of the break in the sleeve are overlapped to a greater or lesser extent depending on the thickness of the flue to be accommodated between the duct 4 and sleeve 7. To provide a degree of sealing between the overlapped edges of the sleeve 7, one edge may be bent in the form of an S to surround the other edge, as shown in Figure 3. Alternatively the edges of the sleeve at the break may be spaced apart, e.g. as shown in Figure 4.
Clamping of the sleeve 7 on to a flue may be effected by any suitable means, for example by a worm clip 9, Figure 1, which may be attached to the lower end of the sleeve 7 or may be separate therefrom, or a toggle catch 10, Figure 2, mounted on the sleeve 7. Alternatively where the edges of the sleeve at the break are overlapped they
may be rivetted when the sleeve is clamped
round the end of the flue. Where the edges
of the sleeve at the break are spaced apart, the gap between the edges may be wedge shaped and downwardly convergent and the edges outwardly turned for engagement with a correspondingly wedge shaped plate 11 with inwardly turned edges, the plate 11 being pushed up the sleeve 7 until the edges of the sleeve have been brought together to an extent that the flue is clamped by the sleeve.
In use of the above described adaptor, the end of the flue 6 is slid over the lower end of the duct 4 and into the gap between the duct 4 and sleeve 7. The sleeve is then clamped round the end of the flue. Where a metal single wall flue is used, the end of the flue may simply be rivetted to the end of duct 4 and the clamping sleeve 7 not used.
To enable this rivetting to be effected easily, the duct 4 is made longer than the sleeve 7.
The duct 4 and sleeve 7 are of sufficient length that no cutting of a flue section to fit the gap between the last flue section and the adaptor is required, the overlap between the last flue section and the duct being merely adjusted to accommodate any excess length of flue section.
There is thus provided a flue adaptor which can be used with a range of flue pipes having a predetermined internal diameter, which is determined initially by the appliance to which the flue is to be connected.
The adaptor is simple to manufacture and easy to use and avoids the need for preselection of a particular type of flue and for cutting of flue sections to fit the gap between the appliance and adaptor.
WHAT WE CLAIM IS:- 1. A flue adaptor for connecting a flue outlet assembly to the end of a flue, the adaptor comprising a duct having one end for introduction into the end of the flue to be connected to the outlet assembly, the other end being adapted for connection to the flue outlet assembly, a clamping sleeve surrounding the duct and for surrounding the end of the flue and being clamped, thereto the sleeve being fixed to the duct and at least part thereof having a variable diameter to accommodate varying outside diameters of flue.
2. An adaptor as claimed in claim 1, wherein the sleeve Is fixed at its one end remote from the one end of the duct to the duct by bracket means spacing the sleeve from the duct, at least the other end of the sleeve having a variable diameter.
3. An adaptor as claimed in either claim
1 or claim 2, wherein the sleeve is provided with at least one longitudinally extending break therein to permit variation in the diameter thereof at least in the region of the or each break.
4. An adaptor as claimed in claim 3, wherein a single break is provided extending the full length of the sleeve.
5. An adaptor as claimed in either claim
3 or claim 4, wherein the edges of the sleeve at the break are overlapped and can be secured directly together when the sleeve is clamped round a flue.
6. An adaptor as claimed in either claim 3 or claim 4, wherein at least one of the edges of the sleeve at the break is bent and engaged round the other edge of the sleeve.
7. An adaptor as claimed in any one of claims 3 to 6, including adjustable clamping means for clamping the sleeve on the flue and extending across the break for urging the edges of the sleeve at the break together.
8. An adaptor as claimed in either claim 3 or claim 4, wherein the break in the sleeve defines a wedge shaped gap and clamping means are provided comprising a corresponding wedge shaped member slidable along the gap to urge the edges of the sleeve at the break together.
9. A flue adaptor substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB392177A GB1577362A (en) | 1978-01-13 | 1978-01-13 | Flues |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB392177A GB1577362A (en) | 1978-01-13 | 1978-01-13 | Flues |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1577362A true GB1577362A (en) | 1980-10-22 |
Family
ID=9767408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB392177A Expired GB1577362A (en) | 1978-01-13 | 1978-01-13 | Flues |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1577362A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2592924A1 (en) * | 1986-01-10 | 1987-07-17 | Total France | DEVICE FOR HOLDING THE END OF A MOBILE ELEMENT IN A POSITION, ROTATING DRIVE IN A TUBE AND APPLICATION TO PREVENTING FOULING AND CLEANING OF THIS TUBE. |
| GB2303202A (en) * | 1995-07-12 | 1997-02-12 | Robert Hodgson | Cowl |
| FR2796451A1 (en) * | 1999-07-12 | 2001-01-19 | T A Soc D Expl As | Adjustable static extractor for flue pipe has collar with radial slit to allow edges to overlap |
-
1978
- 1978-01-13 GB GB392177A patent/GB1577362A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2592924A1 (en) * | 1986-01-10 | 1987-07-17 | Total France | DEVICE FOR HOLDING THE END OF A MOBILE ELEMENT IN A POSITION, ROTATING DRIVE IN A TUBE AND APPLICATION TO PREVENTING FOULING AND CLEANING OF THIS TUBE. |
| EP0233092A1 (en) * | 1986-01-10 | 1987-08-19 | COMPAGNIE DE RAFFINAGE ET DE DISTRIBUTION TOTAL FRANCE: Société Anonyme dite | Device for maintaining in position one extremity of a mobile element, rotating in a tube, and application for this device |
| US4781245A (en) * | 1986-01-10 | 1988-11-01 | Compagnie De Raffinage Et De Distribution Total France | Device for positioning a rotatable element within a tube |
| GB2303202A (en) * | 1995-07-12 | 1997-02-12 | Robert Hodgson | Cowl |
| GB2303202B (en) * | 1995-07-12 | 2000-01-26 | Robert Hodgson | Cowl |
| FR2796451A1 (en) * | 1999-07-12 | 2001-01-19 | T A Soc D Expl As | Adjustable static extractor for flue pipe has collar with radial slit to allow edges to overlap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |