EP0322936B1 - Chimney having discharge means for condensated fluid - Google Patents
Chimney having discharge means for condensated fluid Download PDFInfo
- Publication number
- EP0322936B1 EP0322936B1 EP19880202386 EP88202386A EP0322936B1 EP 0322936 B1 EP0322936 B1 EP 0322936B1 EP 19880202386 EP19880202386 EP 19880202386 EP 88202386 A EP88202386 A EP 88202386A EP 0322936 B1 EP0322936 B1 EP 0322936B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- tubular member
- discharge
- transport shaft
- transport
- 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 - Lifetime
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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
- F23L17/14—Draining devices
Definitions
- the invention relates to a chimney according to the preamble of the main claim.
- Such a chimney is described in US-A-3,650,198, wherein a terminal device or vent top is attached to a flue or vent pipe above the roof level of a house or building.
- the vent top is a double-discharge vent top, as the vent top is provided with a flow divider band having upper and lower discharge openings.
- the flow divider band is a tubular member having a greater diameter than the vent pipe, while the width of the band for terminal devices on a conventional vent pipe should be around 0.25 to 0.31 times piping diameter.
- the object of said double-discharge vent top is to produce highly favourable air flow characteristics including a tendency to induce aspiration within the vent pipe while offering a minimum resistance to flow.
- liquid e.g. water
- waste gases such as e.g. combustion gases, vapours or contaminated air
- liquid e.g. water
- the condensate and possibly the rain water flows down from the end shaft along the transport shafts to places in the building where this liquid is undesired, e.g. in the equipment that produces the waste gases.
- the invented chimney comprises an end shaft 1 that is known per se and a shield 2 mounted near the top end of the end shaft.
- the end shaft 1 comprises near its top end openings (not drawn) under the shield 2 and via said openings the end shaft is in open communication with the outside air.
- This arrangement is known in many types so that further description and drawing are superfluous.
- the invention comprises a transport shaft 3 that can be connected to discharge shafts (not drawn) for waste gases.
- waste gases can originate from a heater, oven or other combustion appliance, so that then the waste gases will be combustion gases. Otherwise these discharge shafts may originate from a kitchen or laboratory or other (work) space, so that then the waste gases are vapours or contaminated air. Since this is known art further description and drawing are superfluous.
- the transport shaft 3 protrudes through the roof and a collar shaped sealing member 4 with a spherically curved lower portion 5 is arranged around the transport shaft.
- the spherically curved lower portion 5 is borne by the complementarily curved inner portion 7, so that a rain water proof connection is created between the lower portion 5 and the inner portion 7. Since this is known art further description and drawing are superfluous.
- a connecting sealing member 8 as shown in figure 2 is arranged about the transport shaft that protrudes through the roof.
- the bottom flange 9 of the connecting sealing member can be sealed against rain water by closely fitting it to the remainder of the roof covering (not drawn), such as roof plates for a flat roof.
- the connecting sealing member 8 extends upwards with an upper flange 10 near and around the transport shaft 3. This is also known art, so that further description and drawing are superfluous.
- end shaft 1 can be far higher than casually glancing at figures 1 and 2 would lead one to suspect, for the connection of the end shaft to the outside air should be at a sufficiently high level with respect to the surrounding roofs to safeguard a proper discharge of waste gases.
- a higher end shaft produces more condensate than one would suspect upon casually glancing at figures 1 and 2.
- the invention aims to remove this disadvantage by the features of the characterising portion of claim 1.
- liquid condensated within on the end shaft and possible rain water cannot flow into the transport shaft, so that the purpose of the invention is attained.
- the invention provides a discharge member 11 that at its inner circumference can be connected to the transport shaft 3 and at its outer circumference to the end shaft 1.
- the discharge member may have the shape of a carrier member or carrier members, so that the transport shaft 3, by this carrier member, supports the end shaft 1, in which arrangement these carrier members allow sufficient space for condensate and possible rain water on the inner wall of the end shaft 1 to flow to the collar shaped sealing member 4 in figure 1 or the connecting sealing member 8 on the roof covering, and therefore cannot flow into the transport shaft 3.
- the discharge member 11 preferably has the shape as shown in figures 1, 2, 3 and 4, i.e. a ring with stepped axial section.
- the ring according to figure 3 comprises an upwardly extending inner flange 13 that abuts the cylindrical transport shaft 3 and can, if desired, be secured onto the transport shaft, e.g. by welding.
- the ring shaped discharge member 11 furthermore comprises a lowermost step 14, the bottom end of the cylindrical shaft 1 being connected to this lowermost step by means of e.g. a weld 12 according to figures 1 and 2.
- the ring shaped discharge member according to figure 3 comprises between the inner flange 13 and the lowermost step 14, a higher step 15, the collar shaped sealing member 4 according to figure 1 or the connecting sealing member 8 according to figure 2 extending upwards below this intermediate step 15 and outside the transport shaft 3.
- the collar shaped sealing member 4 or the connecting sealing member 8 abuts the lower side of the higher step 15.
- rain water cannot end up in the transport shaft 13.
- the discharge member 11 comprises at least one lowered step 16 in the bottom step 14.
- this lowered step 16 forms a discharge port passing the bottom edge of the end shaft 1.
- the discharge member 11 is joined with the transport shaft 3 through its flange 13 in a waterproof manner and to the end shaft 1 through the weld 12 in a waterproof manner, so that the discharge member 11 and particularly the space between the bottom step 14 and the opposite portion of the end shaft 1 form a drain for collecting liquid that flows down along the end shaft 1 (condensate plus possible rain water).
- the liquid collected in this drain can flow out of the drain along the lowered step 16 and past the collar shaped sealing member 4 according to figure 1 or the connecting sealing member 8 according to figure 2 it flows onto the roof covering, so that no liquid can end up in the transport shaft 3.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Sink And Installation For Waste Water (AREA)
Description
- The invention relates to a chimney according to the preamble of the main claim.
- Such a chimney is described in US-A-3,650,198, wherein a terminal device or vent top is attached to a flue or vent pipe above the roof level of a house or building. The vent top is a double-discharge vent top, as the vent top is provided with a flow divider band having upper and lower discharge openings. The flow divider band is a tubular member having a greater diameter than the vent pipe, while the width of the band for terminal devices on a conventional vent pipe should be around 0.25 to 0.31 times piping diameter. The object of said double-discharge vent top is to produce highly favourable air flow characteristics including a tendency to induce aspiration within the vent pipe while offering a minimum resistance to flow.
- When waste gases, such as e.g. combustion gases, vapours or contaminated air, are discharged through a chimney, liquid, e.g. water, may condense from said waste gases against the end shaft protruding above the roof of a building, since that end shaft, due to the surrounding outside air, is cooler than the waste gases. Apart from that some rain water may end up in the end shaft if the connection of the end shaft to the outside air is insufficiently shielded. The problem is that the condensate and possibly the rain water flows down from the end shaft along the transport shafts to places in the building where this liquid is undesired, e.g. in the equipment that produces the waste gases.
- According to the invention this problem is solved by the features of the characterising portion of
claim 1. - Due to this construction, condensate formed on the inner wall of the end shaft and possible rain water cannot flow into the transport shaft.
- Preferred embodiments of the invention have been indicated in the pertaining sub-claims.
- These and other advantages of the invention will be further described in the following description of an embodiment of the invented chimney, in which reference is made to the pertaining drawing. In the drawing:
- figure 1 shows a schematic section of the left-hand halve of an embodiment of the invented chimney that is mounted on a sloping roof,
- figure 2 shows a section as in figure 1, but then of the right-hand halve of the chimney, mounted on a flat roof,
- figure 3 shows a section through the centre line of an embodiment of the invented discharge member according to figures 1 and 2,
- figure 4 shows a top view of the discharge member according to figure 3.
- According to figures 1 and 2 the invented chimney comprises an
end shaft 1 that is known per se and ashield 2 mounted near the top end of the end shaft. Theend shaft 1 comprises near its top end openings (not drawn) under theshield 2 and via said openings the end shaft is in open communication with the outside air. This arrangement is known in many types so that further description and drawing are superfluous. - Furthermore the invention comprises a
transport shaft 3 that can be connected to discharge shafts (not drawn) for waste gases. These waste gases can originate from a heater, oven or other combustion appliance, so that then the waste gases will be combustion gases. Otherwise these discharge shafts may originate from a kitchen or laboratory or other (work) space, so that then the waste gases are vapours or contaminated air. Since this is known art further description and drawing are superfluous. - With a sloping roof the
transport shaft 3 according to figure 1 protrudes through the roof and a collar shaped sealing member 4 with a spherically curvedlower portion 5 is arranged around the transport shaft. On the roof asecond sealing member 6, having an upwardly extending spherically curvedinner portion 7, is mounted on the roof covering, such as roof tiles (not shown). The spherically curvedlower portion 5 is borne by the complementarily curvedinner portion 7, so that a rain water proof connection is created between thelower portion 5 and theinner portion 7. Since this is known art further description and drawing are superfluous. - If the roof does not slope but is horizontally positioned, then a connecting
sealing member 8 as shown in figure 2 is arranged about the transport shaft that protrudes through the roof. Thebottom flange 9 of the connecting sealing member can be sealed against rain water by closely fitting it to the remainder of the roof covering (not drawn), such as roof plates for a flat roof. The connecting sealingmember 8 extends upwards with anupper flange 10 near and around thetransport shaft 3. This is also known art, so that further description and drawing are superfluous. - Finally it is also known to connect the above-described and itself known
chimney 1 to thetransport shaft 3 known per se. A disadvantage of this kind of structure, however, is that the waste gases transported through the transport shaft and described above are warmer than the end shaft whose temperature is defined by the surrounding air, so that liquid, e.g. water, can condensate from the waste gases onto the inner wall of the end shaft. Also, if the connection of the end shaft to the outside air is not sufficiently shielded, some rain water may end up in the end shaft. This condensate and possible rain water will flow downwards from the end shaft through the transport shafts to places in the building where this liquid is undesired, e.g. in the equipment that produces those waste gases, or in other producers of gases. It is also remarked that theend shaft 1 can be far higher than casually glancing at figures 1 and 2 would lead one to suspect, for the connection of the end shaft to the outside air should be at a sufficiently high level with respect to the surrounding roofs to safeguard a proper discharge of waste gases. A higher end shaft, however, produces more condensate than one would suspect upon casually glancing at figures 1 and 2. - The invention aims to remove this disadvantage by the features of the characterising portion of
claim 1. Thus liquid condensated within on the end shaft and possible rain water cannot flow into the transport shaft, so that the purpose of the invention is attained. - In order to be able to secure the
end shaft 1 onto thetransport shaft 3, the invention provides adischarge member 11 that at its inner circumference can be connected to thetransport shaft 3 and at its outer circumference to theend shaft 1. The discharge member may have the shape of a carrier member or carrier members, so that thetransport shaft 3, by this carrier member, supports theend shaft 1, in which arrangement these carrier members allow sufficient space for condensate and possible rain water on the inner wall of theend shaft 1 to flow to the collar shaped sealing member 4 in figure 1 or the connectingsealing member 8 on the roof covering, and therefore cannot flow into thetransport shaft 3. - The
discharge member 11 preferably has the shape as shown in figures 1, 2, 3 and 4, i.e. a ring with stepped axial section. The ring according to figure 3 comprises an upwardly extendinginner flange 13 that abuts thecylindrical transport shaft 3 and can, if desired, be secured onto the transport shaft, e.g. by welding. - According to figure 3 the ring shaped
discharge member 11 furthermore comprises alowermost step 14, the bottom end of thecylindrical shaft 1 being connected to this lowermost step by means of e.g. aweld 12 according to figures 1 and 2. - Preferably the ring shaped discharge member according to figure 3 comprises between the
inner flange 13 and thelowermost step 14, ahigher step 15, the collar shaped sealing member 4 according to figure 1 or the connectingsealing member 8 according to figure 2 extending upwards below thisintermediate step 15 and outside thetransport shaft 3. Here it is possible that the collar shaped sealing member 4 or the connectingsealing member 8 abuts the lower side of thehigher step 15. Thus rain water cannot end up in thetransport shaft 13. - According to figures 1, 2, 3 and 4 the
discharge member 11 comprises at least one loweredstep 16 in thebottom step 14. According to figures 1 and 2 this loweredstep 16 forms a discharge port passing the bottom edge of theend shaft 1. Preferably thedischarge member 11 is joined with thetransport shaft 3 through itsflange 13 in a waterproof manner and to theend shaft 1 through theweld 12 in a waterproof manner, so that thedischarge member 11 and particularly the space between thebottom step 14 and the opposite portion of theend shaft 1 form a drain for collecting liquid that flows down along the end shaft 1 (condensate plus possible rain water). The liquid collected in this drain can flow out of the drain along the loweredstep 16 and past the collar shaped sealing member 4 according to figure 1 or the connectingsealing member 8 according to figure 2 it flows onto the roof covering, so that no liquid can end up in thetransport shaft 3. - Instead of the lowered
step 16, it is also possible to have discharge ports (not shown) through the horizontal portion of thelowermost step 14. - Since this lowered
step 16 or the (not shown) ports form an exit of only slight diameter with respect to the total diameter of the space between theend shaft 1 and thetransport shaft 3, the undesired inflow of outside air past the bottom end of the end shaft is quite limited, for the annulus between theend shaft 1 and thetransport shaft 3 is closed, with the exception of the loweredstep 16 or the (not shown) ports, by means of theinvented discharge member 11, as the the discharge member, by itsflange 13, joins the transport shaft entirely and, by theweld 12, joins the entire bottom edge of theend shaft 1 almost entirely, with the exception of the loweredstep 16. - The above-described embodiments, also shown in the pertaining drawings, are devised for a
cylindrical transport shaft 3, acylindrical end shaft 1 and adischarge member 11 adapted to these cylindrical shapes, but it will be clear that the invention can just as well be applied with atransport shaft 3 and/or atransport shaft 1 of different cross-section, theinvented discharge member 11 having a shape that is adapted to those cross-section.
Claims (5)
- A chimney, comprising:
a transport shaft (3) for waste gases which can be mounted protruding through a roof and which at its top can be connected to a tubular member (1) being in communication with the open air at its top end, the diameter of the tubular member (1) being larger than the diameter of the transport shaft (3);
a discharge member (11) with which the tubular member (1) can be secured in such a way that the tubular member (1) with its bottom end extends to a lower level than the top end of the transport shaft (3), so that the transport shaft (3) protrudes into the tubular member (1);
said discharge member (11) being connectable to the inner wall of the tubular member (1) and also being connectable to the outer wall of the transport shaft (3) and moreover being stepped in cross-section having a lowermost step and a next, higher step, its outer step (14) being the lowermost one and joining the tubular member (1) near its bottom end, characterized in that the tubular member is an end shaft (1) mountable on top of the roof and being in communication with the open air via a shield (2) at its top end, while the higher step (15) of the discharge member (11) serves to receive at its bottom side the top end of a sealing member (4, 6 or 8, 9) which seals the roof covering onto the transport shaft (3), the discharge member (11) being formed to discharge liquid condensed on the inner wall of the end shaft (1) and, if any, rain water, to the roof. - A chimney according to claim 1, characterized in that the discharge member (11) forms a drain together with the inner wall of the end shaft (1), said drain comprising at least one discharge opening (16) debouching outside the periphery of the transport shaft (3) for discharging condensed liquid and possible rain water.
- A chimney according to claim 2, characterized in that the discharge member (11) is annular with an upwardly extending inner flange (13) that fits around the cylindrical transport shaft (3) and has locally at least one step (16) that is lowered with respect to the lowermost step (14), the cylindrical end shaft (1) being joinable with the top of said lowermost step (14), so that the space between the transport shaft (3) and the end shaft (1) is only in open communication with the open air by means of the lowered step (16).
- A chimney according to claim 3, characterized in that instead of having a lowered step (16), ports are present in the horizontal part of the lowermost step (14).
- A chimney according to claim 3, characterized in that instead of having a lowered step (16), ports are present near the bottom end of the end shaft (1) in the wall of the end shaft (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8703097A NL8703097A (en) | 1987-12-22 | 1987-12-22 | CHIMNEY WITH CONDENSATE DRAIN. |
NL8703097 | 1987-12-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0322936A2 EP0322936A2 (en) | 1989-07-05 |
EP0322936A3 EP0322936A3 (en) | 1989-10-04 |
EP0322936B1 true EP0322936B1 (en) | 1993-02-24 |
Family
ID=19851130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880202386 Expired - Lifetime EP0322936B1 (en) | 1987-12-22 | 1988-10-27 | Chimney having discharge means for condensated fluid |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0322936B1 (en) |
DE (1) | DE3878673T2 (en) |
NL (1) | NL8703097A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7458888B2 (en) * | 2007-02-27 | 2008-12-02 | Huta Robert M | Chimney termination cap |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1237676A (en) * | 1959-10-17 | 1960-07-29 | Anti-backflow device for chimney | |
US3183822A (en) * | 1962-11-08 | 1965-05-18 | William Wallace Corp | Dome type chimney top |
US3650198A (en) * | 1969-06-04 | 1972-03-21 | Wallace Murray Corp | Dome type vent top |
-
1987
- 1987-12-22 NL NL8703097A patent/NL8703097A/en not_active Application Discontinuation
-
1988
- 1988-10-27 DE DE19883878673 patent/DE3878673T2/en not_active Expired - Lifetime
- 1988-10-27 EP EP19880202386 patent/EP0322936B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3878673T2 (en) | 1993-06-09 |
EP0322936A3 (en) | 1989-10-04 |
DE3878673D1 (en) | 1993-04-01 |
NL8703097A (en) | 1989-07-17 |
EP0322936A2 (en) | 1989-07-05 |
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