NL1038202C2 - Device for sealing a flue tube passage around a flue tube. - Google Patents
Device for sealing a flue tube passage around a flue tube. Download PDFInfo
- Publication number
- NL1038202C2 NL1038202C2 NL1038202A NL1038202A NL1038202C2 NL 1038202 C2 NL1038202 C2 NL 1038202C2 NL 1038202 A NL1038202 A NL 1038202A NL 1038202 A NL1038202 A NL 1038202A NL 1038202 C2 NL1038202 C2 NL 1038202C2
- Authority
- NL
- Netherlands
- Prior art keywords
- sealing
- flue gas
- gas pipe
- flue tube
- assembly
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/02—Vertical ducts; Channels, e.g. for drainage for carrying away waste gases, e.g. flue gases; Building elements specially designed therefor, e.g. shaped bricks or sets thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Description
tl· 1
Title: Device for sealing a flue tube passage around a flue tube
The present invention relates to a device for sealing a flue tube passage around a flue tube, comprising: an internal space for allowing the flue tube to pass through the device, and a sealing sleeve surrounding the internal space, which is provided with two openings providing access to the internal space, wherein the 5 sealing sleeve comprises a heat insulating, fireproof material.
Such a device is known from practice. For example, such a device may be formed by a quantity of solid, compressible material loosely stuffed in an interstitial space that is present between an outer surface of a flue tube and a flue facing boundary surface of a flue tube passage through which the flue tube is extending.
10 Also, it is possible for such a device to be formed as a solid sleeve structure that fits in an interstitial space as mentioned, wherein the dimensions of the sleeve structure are such that it entirely blocks the space.
Basically, a flue tube passage is a hole in a structure, through which a flue tube can be guided in order to allow it to pass the structure. In buildings, flue tube 15 passages are often applied in roofs and walls,- in order to guide a flue tube from the inside of the building to the outside of the building. Also, flue tube passages can be applied in floors, for instance to guide a flue tube through a floor in the direction of a roof.
With regard to fire safety, in practical situations, a cross-sectional area of a 20 flue tube passage is often chosen such as to be substantially larger than a cross-sectional area of a flue tube extending through the passage. Thus, it is achieved that any combustible materials in the structure in which the passage is present are located at a certain distance from the flue tube. As a result, during use, easy ignition of such materials as a result of exposure to a hot outer surface of the flue tube is 25 prevented.
It appears from the foregoing that having free space between an outer surface of a flue tube and a flue facing boundary surface of a flue tube passage through which the flue tube is extending is advantageous as far as fire safety is concerned.
1 03 8202 2
Still, there is a need for a device for sealing a flue tube passage around a flue tube. The reason is that it is often desirable to prevent free ventilation from one side of a structure in which a flue tube passage is present to another side, in order to avoid undesired transport of air, heat, moisture, and sound, and, in case of a fire, 5 undesired spreading of the fire from one compartment of a building to another. In particular, having a space surrounding a flue tube in a structure does not comply with modern building standards with regard to energy efficiency, sustainability, and living comfort. Further, when there is free ventilation, transport of smoke and hot gases is facilitated, which is very dangerous in cases of fire. In this respect, having an open 1Q interstitial space still compromises fire safety.
Although known sealing devices to some extent alleviate the above-mentioned problem of free ventilation, said devices have several drawbacks. In structures which are of a certain thickness and which are well isolated, an effect of heat accumulation occurs at the position of the flue tube passage, which may lead to fire. In relatively 15 thick structures, the dimensions of a sealing device need to be so large that the presence of the hole for accommodating the sealing device has a weakening effect on the structure. When sleeves of mineral wool are applied, there is a problem related to the fact that such sleeves are not capable of absorbing forces, so that a flue tube cannot be fixed to the structure very well. Furthermore, when a vapor 20 barrier (combustible foil) is applied, it is not possible to have airtight connections, so that undesired vapor diffusion is obtained.
It is an objective of the present invention to provide a sealing device which is fireproof, and which is especially suitable to be used in the field of (metal) flue tubes having an operational temperature at an outer surface which is higher than 85°C, 25 and higher than 100°C in case of fire in the flue tube, and requiring a certain distance to combustible materials, as has been explained in the foregoing.
The objective is achieved by a device for sealing a flue tube passage around a flue tube, which comprises an internal space and a sealing sleeve surrounding the internal space as defined in the opening paragraph, and also at least one barrier 30 element extending at least partially inside the internal space, and, in the internal space, being located at a distance from an inner surface of the sealing sleeve, at least for a substantial part.
The device according to the present invention comprises a sealing sleeve comprising a heat insulating, fireproof material, which is intended to be used for 3 surrounding a flue tube, wherein there can be space between an inner surface of the sleeve and the flue tube over a considerable length of the flue tube. Prevention of open ventilation can be achieved on the basis of the fact that the design of the sealing sleeve can be adapted to the shape and dimensions of a flue tube in such a 5 way that it is possible to have contact, possibly through suitable sealing means, or only very little play between a portion of the sealing sleeve and the flue tube. In a portion of’the sealing sleeve which is free from contact, at least one barrier element as defined in the foregoing is present. This barrier element plays a role in shielding the sealing sleeve from heat radiated by the flue tube, which adds to the fireproof 10 properties of the device according to the present invention, as this helps in avoiding heat accumulation.
An important advantage of the barrier element is that it is possible for this element to have such a design that it can have a function in realizing a thermosiphon effect inside the sealing sleeve. For example, this is the case when the barrier 15 element is shaped like a bush, especially when the bush is arranged such that an end of the bush is facing the inner surface of the sealing sleeve, wherein it is assured that there is a certain space between the said end and the said inner surface. Hence, air can pass between the said end and the inner surface, so that there can be an air path inside the device according to the present invention. In fact, 20 in such a case, the barrier element separates a hot side, namely a side where a flue tube is present, from a cold side. At the hot side, air is inclined to rise, and on the basis of the fact that there is an air passage between the hot side and the cold side, fresh air can be drawn in. It is advantageous if a portion of the bush is extending outside of the internal space, as in that case, an incoming airflow and an outgoing 25 airflow can very well be separated.
It is profitable to have a thermosiphon effect, as this is a cooling effect, wherein outside air is drawn in and eventually guided along the outer surface of the flue tube before it escapes from the inner space of the device according to the present invention. On the basis of this effect, dimensions of the device can be kept 30 within acceptable limits. Also, the upper limit of the temperature of the flpe tube can be increased in comparison with existing situations, and the same is true in respect of the thickness of a structure through which the flue tube is extending, while the maximum allowable temperature of combustible materials is not exceeded.
4 .
It is noted that the thermosiphon effect is known per se, for instance from DE 1 195 928. However, realizing this effect in a sealing sleeve of a heat insulating, fireproof material is a concept that is not part of the state of the art. The use of heat insulating, fireproof material is known for preventing open ventilation, but in the 5 known cases, the material is used to fill up the entire space surrounding a flue tube in a flue tube passage. Hence, the device according to the present invention differs from known devices in various ways, wherein a combination of heat insulation and a possible thermosiphon effect is unique.
As has been mentioned in the foregoing, prevention of open ventilation can be 10 achieved on the basis of the fact that the design of the sealing sleeve can be adapted to the shape and dimensions of a flue tube in such a way that it is possible to have contact, possibly through suitable sealing means, or only very little play between a. portion of the sealing sleeve and the flue tube. The portion of the sealing sleeve can be a portion in which one of the openings is present. When the flue tube 15 has a constant cross-sectional area over its length, the contact or small play can easily be realized when the two openings of the sealing isleeve have different dimensions, and the portion is provided with the smallest of the openings.
In order to close the sealing device at an end where there is space between the flue tube and the sealing sleeve, a suitable cover can be provided. Preferably, 20 the cover is provided with openings, so that air can pass the cover in case the barrier element is used for realizing a thermosiphon effect inside the sealing device, as has been explained in the foregoing. It is also possible for the cover to be arranged at a certain distance from the end of the sealing device as mentioned. In such a case, the openings for letting pass air can be omitted, since the air can flow in and out of the 25 sealing device through the gap between the cover and the sealing device.
When use is made of sealing means between a portion of the sealing sleeve and the flue tube, it is advantageous if a suitable choice is made in respect of the material of the sealing means. One example of a suitable embodiment of the sealing means is a ring or cord made of glass fiber.
30 The sealing sleeve can be made of any suitable heat insulating, fireproof material. Examples of suitable material are vermiculite and calcium silicate. The barrier element can be made of metal, for example.
5
The present invention further relates to an assembly of a flue tube which at one side is connected to an apparatus producing flue gases during operation, a structure having a flue tube passage through which the flue tube is extending, and a device sealing the flue gas passage around the flue tube, wherein the device 5 comprises a sealing sleeve surrounding the flue tube, wherein the sealing sleeve comprises a heat insulating, fireproof material, and wherein space is present between a portion of an inner surface of the sealing sleeve and the flue tube, which is accessible from a side of the sealing sleeve which is the most remote from the flue gases producing apparatus.
10 The space as mentioned is suitable for accommodating at least one barrier element, which may have a function in shielding the inner surface of the sealing sleeve from the influence of the hot flue tube during operation of the flue gases producing apparatus, and which may also have a function in enhancing a thermosiphon effect, as has been explained in the foregoing. In any case, the space 15 allows for a length of the flue tube extending through the sealing device to be surrounded by air. When an airflow is induced in this space in some way, for example on the basis of a thermosiphon effect, there is an advantageous cooling effect, on the basis of which the fireproof properties of the sealing device can be more than sufficient to avoid problems under any operational circumstance.
20 Preferably, in order for the sealing device to really constitute a separation of two sides of a structure, a considerable part of an outer surface of the sealing sleeve closely adjoins the structure. In respect of the structure, it is noted that this may be part of a building, and may be one of a floor, a wall, a ceiling, or a roof of the building.
25
The present invention also relates to a building through which a flue tube is extending, wherein the flue tube is guided through both at least one flue tube passage in an inner structure of the building and a flue tube passage in an outer structure of the building, and wherein a separate sealing device as described in the 30 foregoing is applied per flue tube passage for sealing the respective flue gas passages around the flue tube.
An advantage of the building as defined in the preceding paragraph is that there is practically no heat loss from one space of the building to another when a sealing device is arranged around the flue tube in a flue tube passage that is present 6 between the spaces. Moreover, there is no loss of any space outside of the structures, as there is no need for the sealing devices to surround the flue tube along lengths outside of the flue tube passages.
A building which is furthermore covered by the present invention is a building 5 comprising at least two times an assembly of a flue tube which at one side is connected to an apparatus producing flue gases during operation, a structure which is part of the building and which has a flue tube passage through which the flue tube is extending, and a device sealing the flue gas passage around the flue tube, wherein the device comprises a sealing sleeve surrounding the flue tube, wherein 10 the sealing sleeve comprises a heat insulating, fireproof material, and wherein space is present between a portion of an inner surface of the sealing sleeve and the flue tube, which is accessible from a side of the sealing sleeve which is the most remote from the flue gases producing apparatus. In that case, the flue tube which is part of each assembly is one and the same flue tube.
15
The present invention will be further explained on the basis of the following description of an assembly of a flue tube, a structure having a flue tube passage through which the flue tube is extending, and a device sealing the flue gas passage around the flue tube, with reference to the drawing, in which equal reference signs 20 indicate equal or similar components, and in which: figure 1 diagrammatically shows a longitudinal section of a possible embodiment of a sealing device according to the present invention; figure 2 diagrammatically shows a cover which is intended to be placed on an end of the,sealing device; 25 figure 3 diagrammatically shows an alternative of the cover shown in figure 2; figure 4 illustrates the application of the cover shown in figure 3 with a flue tube and a sealing device according to the present invention; figure 5 illustrates an application of a sealing device as shown in figure 1 in a roof construction of a building; 30 figure 6 illustrates the use of a number of separate sealing devices according to the present invention in a building; and figure 7 illustrates the use of two different types of a sealing device according to the present invention.
7
Figure 1 shows an assembly 1 of a flue tube 10, a structure 20 having a flue tube passage 21 through which the flue tube 10 is extending, and a device 30 sealing the flue gas passage 21 around the flue tube 10.
In the shown example, the flue tube 10 is straight, has a constant cross-5 sectional area over its length, and has a vertical orientation. For sake of completeness, it is noted that the present invention is applicable with many other types of flue tubes 10 as well. Furthermore, in the shown example, the flue tube 10 is of the double wall type, wherein an inner tube 11 of the flue tube 10 is intended to be used for transporting flue gases, away from a flue gas producing apparatus (not 10 shown in figure 1) to which the flue tube 10 can be connected, and wherein an outer tube 12 of the flue tube 10 has an insulating function. The material of the flue tube 10 can be metal.
The structure 20 having the flue tube passage 21 can be a floor or a ceiling in a building, for example, wherein it is possible for the structure 20 to comprise 15 combustible materials. In order to avoid contact between the flue tube 10, which can be very hot during operation, and the structure 20 at the position of the flue tube passage 21, a cross-sectional area of the flue tube passage 21 is chosen such as to be considerably larger than a cross-sectional area of the flue tube 10, wherein it is advantageous for the flue tube 10 to have a central position in the flue tube passage 20 21.
The sealing device 30 comprises a sealing sleeve 31, which is shaped like a hollow box, and which encloses an internal space 32 of the sealing device 30. A suitable shape of a cross-sectional area of the sealing sleeve 31 is square, but that does not alter the fact that it is also possible for the cross-sectional area to have 25 another shape, for instance circular. The sealing sleeve 31 has relatively thick walls which are made of a heat insulating, fireproof material. At one end, which is the top end in the orientation of the sealing sleeve 31 as shown in figure 1, the sealing sleeve 31 is completely open, and has a relatively large opening 33. At another end, which is the bottom end in the orientation of the sealing sleeve 31 as shown in figure 30 1, the sealing sleeve 31 has a bottom portion 34 having a central opening 35 which is smaller than the opening 33 at the top end. A cross-sectional area of the opening 35 at the bottom end is only slightly larger than the cross-sectional area of the flue tube 10. In the shown example, the sealing sleeve 31 contacts the flue tube 10 at the position of the opening 35 at the bottom end through a sealing ring 40. Furthermore, 8 : the sealing sleeve 31 is dimensioned such that it is closely fitted inside the flue tube passage 21, wherein an outer surface 36 of the sealing sleeve 31 closely adjoins the structure 20 at the position of the flue tube passage 21. In this way, the sealing device 30 seals the flue tube passage 21 around the flue tube 10, wherein transport 5 of things like air, heat, smoke, moisture, and sound from one side of the structure 20 to another is prevented. The sealing ring 40 can be made of glass fiber, for example.
The use of a sealing ring 40 as sealing means is advantageous in view of the fact that a sealing ring 40 is capable of allowing for axial motion of the flue tube 10 with respect to the structure 20 and the sealing device 30, which motion takes place when 10 the flue tube 10 heats up or cools down.
Besides the sealing sleeve 31, the sealing device 30 comprises a bush 50 shaped like a thin-walled, cylindrical tube, which can be made of metal, for example.
One part of the bush 50 is extending inside a space 37 which is present between an inner surface 38 of the sealing sleeve 31 and an outer surface 13 of the flue tube 10, 15 and another part of the bush 50 projects from the sealing sleeve 31, at the open top end of the sealing sleeve 31. The bush 50 is arranged such as to be at a distance from both the outer surface 13 of the flue tube 10 and the inner surface 38 of the sealing sleeve 31. The bush 50 does not extend all the way to the bottom portion 34 of the sealing sleeve 31, seen in a downward direction. Instead, there is a passage 20 51 between the bottom portion 34 and a bottom end 52 of the bush 50. In the shown example, the bush 50 is coaxially arranged with respect to the flue tube 10.
The bush 50 can be supported in any suitable way. For example, the bush 50 can be fixed to the flue tube 10 through suitable fixation means (not shown), which can be radially oriented bars, for example. It is also possible for the bush 50 to be 25 fixed to one or more other components. In this respect, it is noted that the bush 50 is preferably not attached to the sealing sleeve 31, so that there is no physical connection of the sealing sleeve 31 to a relatively hot component during operation.
With the bush 50 being positioned inside the sealing device 30 as described in the foregoing, i.e. between the outer surface 13 of the flue tube 10 and the inner .30 ' surface 38 of the sealing sleeve 31, it is achieved that two annular spaces 53, 54 can be discerned, namely an outer space 53 between an outer surface 55 of the bush 50 and the inner surface 38 of the sealing sleeve 31, and an inner space 54 between an inner surface 56 of the bush 50 and the outer surface 13 of the flue tube 10. As the bush 50 is projecting from the sealing sleeve 31, a top opening 57 of the inner space .9 54 is at a higher level than a top opening 58 of the outer space 53. At the position of the passage 51 between the bottom portion 34 and a bottom end 52 of the bush 50, the outer space 53 and the inner space 54 are open to each other.
As the sealing device 30 seals the flue tube passage 21 around the flue tube 5 10, the sealing device 30 acts as a barrier against free ventilation through the flue tube passage 21, from a bottom side to a top side, and vice versa. Preferably, the material of the sealing sleeve 31 is not only a heat insulating, fireproof material, but also an airtight material. A practically airtight construction is obtained when furthermore the sealing ring 40 is capable of realizing an airtight coupling between 10 the bottom portion 34 of the sealing sleeve 31 and the outer surface 13 of the flue tube 10, and the outer surface 36 of the sealing sleeve 31 adjoins the structure 20 in an airtight fashion.
On the basis of the fact that the sealing sleeve 31 comprises a heat insulating, fireproof material, and the fact that the sealing sleeve 31 is in circumferential contact 15 with the outer surface 13 of the flue tube 10, through the sealing ring 40, and also with the structure 20, transport of heat from one side of the structure 20 to another is prevented. Furthermore, on the basis of the fact that the sealing sleeve 31 comprises a thermally insulating, fireproof material, and is only in contact with the flue tube 10 through the sealing ring 40, while a substantial portion of the sealing sleeve 31 is at a 20 distance from the flue tube 10, and is also shielded by the bush 50 against heat radiation from the flue tube 10, transport of heat from the flue tube 10 to the structure 20 cannot take place to such an extent that the temperature in the structure 20 rises to a dangerous level, i.e. a level at which materials of the structure 20 can be ignited, even in case of a fire in the flue tube 10. Hence, an important advantage of the 25 sealing device 30 is that the sealing function is combined with a fire preventing function.
Another fire preventing measure that is associated with the design of the sealing device 30 will be explained in the following. Due to the presence of the bush 50, on the basis of which an external space 53 and an internal space 54 are 30 obtained inside the sealing device 30, which are in communication through the passage 51 at the bottom end 52 of the bush 50, as has been described in the foregoing, natural air circulation can take place inside the sealing device 30 when the flue tube 10 is hot. Hence, a continuous flow of air can be obtained inside the sealing device 30, which can be used for cooling the flue tube 10. In particular, when the flue 10 tube 10 is hot, there is a temperature difference between the external space 53 and the internal space 54, wherein the internal space 54 is hotter than the external space 53. As a result, air is put in motion, wherein a rising movement of air is obtained inside the internal space 53. In the process, fresh air is continuously drawn into the 5 external space 53, and moves in a downward direction toward the passage 51 between the external space 53 and the internal space 54. Hence, there is a flow of fresh air along the flue tube 10, which has a cooling effect. As this natural process can take place at the open side of the sealing device 30, there is no need for ventilation which requires a passage between both sides of the structure 20, as is the 10 case in many conventional solutions for ensuring that the flue tube 10 is cooled to a sufficient extent, which would deteriorate the sealing function of the sealing device 30. It is noted that the natural circulation of air under the influence of heat differences in a structure with annular spaces is known per se, and is referred to as thermosiphon process. Furthermore, it is noted that, for sake of clarity, the directions -> 15 of flows of air inside the sealing device 30 are indicated by means of arrows in figure “ 1.
The sealing device 30 can comprise a cover 60 as shown in figure 2, which is intended to be placed on the sealing sleeve 31, at the top end thereof. The cover 60 - .has.a central opening 61 for allowing the flue tube 10 and the bush 50 to pass. It is 20 possible that the cover 60 is arranged such as to abut against the top end of the sealing sleeve 31. In that case, in order to avoid hindrance of the thermosiphon process, it is practical for the cover 60 to be provided with other openings 62 besides the central opening 61, which are positioned such as to provide access to the external space 53 when the cover 60 is in place on the sealing sleeve 31. Hence, 25 when the cover 60 is applied and the thermosiphon process is induced on the basis of a high temperature of the flue tube 10, fresh air is supplied to the inside of the sealing device 30 through these other openings 62, while air that has been heated up by the flue tube 10 is discharged through the bush 50 extending through the central opening 61.
. 30 It is also possible that the cover 60 is arranged such that there is a gap between the top end of the sealing sleeve 31 and the cover 60. In that case, there is only a need for the central opening 61, while the other openings 62 may be omitted.
A top view of a cover 60 having only a central opening 61 is shown in figure 3. The way in which such a cover 60 is mounted with respect to a sealing device 30 is 11 illustrated in figure 4, wherein the gap between the top end of the sealing sleeve 31 and the cover 60 is indicated by means of reference numeral 63.
Figure 5 illustrates an application of an assembly 1 as shown in figure 1 in a roof construction 70 of a building, which comprises a ceiling 71 and a roof 72. In the 5 shown example, the ceiling 71 has two layers, namely a vapor barrier 73 at a bottom side, and a relatively thick isolation layer 74 at a top side. The sealing device 30 is positioned inside a flue tube passage 21 which is present in the ceiling 71. In figure 5, directions of flows of air to and from the sealing device 30, and the direction of flue gases through the flue tube 10 are indicated by means of arrows. A rain barrier 10 which can be present on the roof 72 is indicated by means of reference numeral 75, and a slope roof flashing, which can be present on the roof 72 for surrounding the flue tube 10 is indicated by means of reference numeral 76.
Figure 6 illustrates the use of a number of separate sealing devices 30 in a . building 80. In the shown example, a flue gas producing apparatus 81 is positioned 15 at a ground floor 82 of the building 80, and a flue tube 10 is connected to this apparatus 81 at one side, and is extending from this apparatus 81 through the building 80, until it finally exits the building 80 through the roof 72. On its way from the apparatus 81 to the outside of the building 80, the flue tube 10 passes three flue tube passages 21, namely a flue tube passage 21 in a first floor 83, a flue tube 20 passage 21 in a second floor 84, and a flue tube passage 21 in the roof 72. In figure 6, directions of flows of air to and from the various sealing devices 30, and the direction of flue gases through the flue tube 10 are indicated by means of arrows.
An outer shell 85 of the building 80 is thermally insulated, and on the basis of the application of the sealing devices 30, it is achieved that there is also no energy 25 loss through the flue tube passages 21. The sealing devices 30 can be used sëparately at each level where a flue tube passage 21 is present. An advantage of this fact is that the heat delivery to various rooms of the building 80 by the flue tube 10 is not hindered, which would be the case if the flue tube 10 would be entirely covered by some construction, for instance a construction for realizing a 30 thermosiphon process for cooling the flue tube 10.
Figure 7 illustrates the use öf two different types of a sealing device 30 according to the present invention. At the top side of figure 7, the type of sealing device 30 is shown which is shown in figure 1 and other figures as well, and which 12 has beep described in the foregoing. At the bottom side of figure 7, another type of sealing device 30 is shown, namely a type which does not comprise the bush 50.
The type of sealing device 30 with the bush 50 is suitable to be applied with structures 20 in which a flue tube passage 21 is present which have a relatively large 5 thickness, whereas the type of sealing device 30 without the bush 50 is suitable to be applied with structures 20 in which a flue tube passage 21 is present which have a relatively small thickness. For example, a threshold value between a relatively large thickness and a relatively small thickness may be 200 mm. Another situation in which the type of sealing device 30 without the bush 50 may be used is a situation in which 10 a sufficiently low temperature of the flue tube 10 is guaranteed, wherein the thickness of the structure 20 is not so much a determining factor. In that situation, the shielding function of the bush 50 can be dispensed with. In any case, it is important to note that both types of sealing device 30 are capable of constituting a fireproof blockage between two compartments of a building 80 and allowing for a 15 cooling action at the position of flue tube passages 21 at the same time, without introducing energy losses from a building 80. The thermosiphon process does not require the presence of the bush 50, and therefore takes place in the sealing device 30 without the bush 50 as well, as is indicated by means of arrows in figure 7.
In figure 7, it is shown that it is possible to use a safety sleeve 90 which is 20 extending all the way between two structures 20, and which is arranged such as to surround the flue tube 10 in order to prevent touching of the flue tube 10. The sealing devices 30 may be used for positioning and fixing the safety sleeve 90. In figure 7, it can be seen that for this purpose, the sealing devices 30 are projecting from the structures 20 to some small extent. Advantageously, in order to avoid accumulation 25 of heat inside the safety sleeve 90, holes 91 are provided in this sleeve 90, so that ventilation of the sleeve 90 is possible, and heat can be removed under the influence of a natural flow of air, which, needless to say, is in an upward direction, as indicated by means of arrows in figure 7.
30 In the following, a number of important aspects relating to the present invention are described.
- When the present invention is applied, resistance of the existing structure 20 to fire disruption and flash over remains in tact.
13 - When the present invention is applied, the minimum fire safety requirements are amply met. Furthermore, the sealing device 30 according to the present invention can be accommodated inside structures 20 of combustible material without play.
- When the present invention is applied, the requirements for prevention of flash over 5 between two compartments of a building 80 are met. The resistance to flash over of the structure 20 is not negatively influenced by the passage of the combination of the flue tube 10 and the sealing device 30. Hence, the sealing device 30 can serve as a fire stop. Spreading of fire by conduction through the (metal) flue tube 10 is prevented or at least slowed down on the basis of the possible thermosiphon effect 10 in the sealing device 30.
- When the present invention is applied, insulating properties of the insulation shell 85 of a building 80 remain in tact, on the basis of which energy loss, cold bridges and condensation are prevented.
- When the present invention is applied, the air tightness remains in tact. Hence, the 15 present invention is suitable to be used in the field of mechanically ventilated houses and passive houses. Air tightness prevents undesired heat losses, condensation, and transfer of sound from occurring.
- When the present invention is applied, vapor diffusion resistance of the structure 20 remains in tact, on the basis of which undesired vapor diffusion and damage as a 20 result of condensation are prevented. It is possible to provide the sealing device 30 with a vapor barrier 73, because it remains cool. Vapor diffusion through the packing between the flue tube 10 and the sealing device 30 will not accumulate, but is discharged by ventilation of the sealing device 30.
- When the present invention is applied, acoustic properties of the existing structure 25 20 are not influenced in a negative fashion, wherein a lack of continuous seams or gaps, and the possible use of sound damping material in the sealing device 30 are important factors.
- The sealing device 30 according to the present invention and the flue tube 10 are allowed to move with respect to each other in the axial direction. On the basis of this 30 fact, the convenience of installation is enhanced, and expansion of the flue tube 10 as a result of high temperatures or bending of a roof can be compensated for.
- The packing arranged at the bottom of the sealing device 30 is made of fireproof material, and is resilient to such an extent that an airtight sealing can be guaranteed.
14 - The sealing device 30 is robust and remains cool enough to allow for fixation to a structure 20. Therefore, it is possible to create a fixation point for the flue tube 10 against (lateral) wind loads.
- The sealing sleeve 31 of the sealing device 30 can be used for attaching a sleeve 5 along the entire height of a floor. This can be useful in case touch safety or additional enhancement of fire resistance is necessary.
- In general, when the present invention is applied in a building, energy losses are substantially reduced under all possible circumstances, whether flue gases are flowing through the flue tube 10 or not, as there is complete sealing of flue tube 10 passages 21. At the same time, there is practically no risk of fire induced by a hot flue tube 10.
It will be clear to a person skilled in the art that the scope of the present invention is not limited to the examples discussed in the foregoing, but that several 15 amendments and modifications thereof are possible without deviating from the scope of the invention as defined in the attached claims.
For example, the fact that the figures only show a vertical orientation of the flue tube 10 should not be understood such as to mean that the present invention cannot be applied in case of another orientation of the flue tube 10 as well.
20 The presënt invention is applicable with flue tubes 10 of any type. For example, the flue tube 10 can be of the double wall type, wherein an inner tube 11 of the flue tube 10 is intended to be used for transporting flue gases, away from a flue gas producing apparatus to which the flue tube 10 can be connected, and wherein an outer tube of the flue tube 10 is intended to be used for transporting air towards 25 the apparatus as mentioned. The material of the flue tube 10 may be a metal, but other materials are possible as well. The present invention is particularly, but not exclusively, intended to be used in situations in which the flue tube 10 has an outer surface 13 which can be heated to a temperature higher than a fire-safe value (maximum 85°C under normal circumstances and maximum 100°C in case of fire in 30 the flue tube 10).
For sake of completeness, it is noted that in the context of this text, the term "sealing a flue tube passage 21 around a flue tube 10" should be understood such as to mean that there is practically no possibility of ventilation along the flue tube 10 at the position of the flue tube passage 21. In practice, sleeve-like devices are known 15 ., for surrounding a flue tube 10, however, they are adapted to allow for ventilation at the positions of the flue tube passages 21, so that there can be an airflow from one side of a structure 20 having a flue tube passage 21 to another when such devices are used. According to the present invention, there is no ventilation in order to avoid 5 loss of energy from one compartment of a building 80 to another, and eventually to the outside of the building 80.
In the foregoing, among other things, a device 30 for sealing a flue tube passage 21 around a flue tube 10 has been described, especially a device 30 which 10 comprises an internal space 32 for allowing the flue tube 10 to pass through the device 30, and a sealing sleeve 31 surrounding the internal space 32, which is provided with two openings 33, 35 providing access to the internal space 32, wherein the sealing sleeve 31 comprises a heat insulating, fireproof material. Furthermore, the device 30 comprises at least one barrier element 50 extending at least partially 15 inside the internal space 32, and, in the internal space 32, being located at a distance from an inner surface 38 of the sealing sleeve 31, at least for a substantial part. On the basis of the design with the sealing sleeve 31 and the barrier element 50 as mentioned, it is possible for the device 30 to have a complete sealing function in a structure 20, and guarantee fire safety at the same time.
1 03 8202
Claims (28)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1038202A NL1038202C2 (en) | 2010-08-26 | 2010-08-26 | Device for sealing a flue tube passage around a flue tube. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1038202A NL1038202C2 (en) | 2010-08-26 | 2010-08-26 | Device for sealing a flue tube passage around a flue tube. |
| NL1038202 | 2010-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL1038202C2 true NL1038202C2 (en) | 2012-02-28 |
Family
ID=43929061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1038202A NL1038202C2 (en) | 2010-08-26 | 2010-08-26 | Device for sealing a flue tube passage around a flue tube. |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL1038202C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3757458A1 (en) * | 2019-06-28 | 2020-12-30 | Greenergia Oy | Chimney flue sleeve of a chimney flue |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2130385A (en) * | 1936-05-04 | 1938-09-20 | Fluor Corp | Muffler and ventilator system |
| US2713301A (en) * | 1953-04-30 | 1955-07-19 | Henry S Mckann | Sheet metal chimney construction |
| US2916983A (en) * | 1956-09-19 | 1959-12-15 | William Wallace Company | All purpose flue |
| DE1195928B (en) * | 1957-06-21 | 1965-07-01 | Ing Hans Schindler | Metal pipe chimney |
| DE2236194A1 (en) * | 1972-07-24 | 1974-02-14 | Kurt Karl | PREFABRICATED, FOAMED CHIMNEY HEAD MADE OF STEEL OR CONSTRUCTION PIPES FOR RESIDENTIAL AND INDUSTRIAL BUILDINGS |
| DE202008006744U1 (en) * | 2008-05-19 | 2008-07-24 | Culimeta Textilglas-Technologie Gmbh & Co.Kg | Wall duct for passing a chimney pipe through combustible components |
-
2010
- 2010-08-26 NL NL1038202A patent/NL1038202C2/en active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2130385A (en) * | 1936-05-04 | 1938-09-20 | Fluor Corp | Muffler and ventilator system |
| US2713301A (en) * | 1953-04-30 | 1955-07-19 | Henry S Mckann | Sheet metal chimney construction |
| US2916983A (en) * | 1956-09-19 | 1959-12-15 | William Wallace Company | All purpose flue |
| DE1195928B (en) * | 1957-06-21 | 1965-07-01 | Ing Hans Schindler | Metal pipe chimney |
| DE2236194A1 (en) * | 1972-07-24 | 1974-02-14 | Kurt Karl | PREFABRICATED, FOAMED CHIMNEY HEAD MADE OF STEEL OR CONSTRUCTION PIPES FOR RESIDENTIAL AND INDUSTRIAL BUILDINGS |
| DE202008006744U1 (en) * | 2008-05-19 | 2008-07-24 | Culimeta Textilglas-Technologie Gmbh & Co.Kg | Wall duct for passing a chimney pipe through combustible components |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3757458A1 (en) * | 2019-06-28 | 2020-12-30 | Greenergia Oy | Chimney flue sleeve of a chimney flue |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11585466B2 (en) | Device for passing pipes or cables through an opening in a building | |
| US8517568B2 (en) | Embedded type lamp with heat radiating device | |
| DK1756472T3 (en) | Heat-resistant house | |
| US9504182B2 (en) | Electrical housing having cooling and sound-absorbing means | |
| US2687127A (en) | Insulated flue | |
| JP2007056536A (en) | Drain piping structure, drain collecting pipe, and fire-resistant auxiliary member for drain pipe | |
| KR102626947B1 (en) | fire protection for pipes | |
| US2275902A (en) | Outlet stack construction for building heating systems | |
| NL1038202C2 (en) | Device for sealing a flue tube passage around a flue tube. | |
| JP5014450B2 (en) | Drainage piping structure | |
| JP6255180B2 (en) | Smoke exhaust heat dissipation device | |
| JP6331489B2 (en) | Fireproof structure of cables in nuclear power plants. | |
| US10739014B2 (en) | System and method to cool an exposed surface of an appliance | |
| JP2007056538A (en) | Drain pipe | |
| JP2009092253A (en) | Double chimney combustion appliance | |
| JP6431416B2 (en) | Fall-off prevention device and fall-off prevention method for fireproof caps installed in the fire-prevention compartment penetration of the refrigerant piping system | |
| FI129398B (en) | Chimney flue sleeve of a chimney flue | |
| FI125508B (en) | Metal light smoke flue pass-through protection | |
| KR20100004148A (en) | Assembly type gas flue | |
| JP6283527B2 (en) | Fireproof tube | |
| FI125992B (en) | Fire protection duct for electrical cables | |
| SK792015U1 (en) | Vapor proof junction of the chimney body with horizontal/vertical/diagonal building construction made up of foam glass | |
| JP4060780B2 (en) | Building | |
| SE541972C2 (en) | A chimney arrangement | |
| FI125555B (en) | Water-circulating bowl oven |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| HC | Change of name(s) of proprietor(s) |
Owner name: SCHIEDEL METALOTERM B.V.; NL Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), CHANGE OF OWNER(S) NAME; FORMER OWNER NAME: ONTOP B.V. Effective date: 20210727 |