FR2702823A1 - Pipe conduit connection for lateral connection of air supply and flue gas exhaust ducts from a single firing location to an air and flue gas chimney. - Google Patents

Abstract

The invention relates to a pipe connection for the lateral connection of the air supply and flue gas exhaust ducts from a single-hearth heating location to an air and flue gas fireplace. This connection (10) produced in the form of a set of spare parts comprises an external connection part (14) with a passage opening (40) for the supplied air, and for the flue gas pipe, an internal connection part (12) with a passage opening (22) for the flue gases, a bead (24) projecting into the opening (20) and with a flue gas pipe for the gas-tight connection of the flue gas pipe. smoke. The external connection piece (14) can be placed in a lateral opening (34) of the external wall (30), its front face (36) flush with the external face (38). The invention is applicable in the field of heating technology.

Description

The invention relates to a pipe conduit connection for the

  lateral connection of an air supply duct and a flue gas exhaust duct disposed therein from a single firing location to an outer wall of a chimney in which the air supply duct is disposed at this external wall and the flue gas discharge channel is disposed at a distance therefrom, the duct connection pipes having an external connecting piece with a passage opening for the supply air, and for connecting the flue gas discharge duct, an internal connecting piece which can be connected to the flue gas discharge channel and made of a heat-resistant material, with a concave-cylindrical application surface applying externally to the flue gas discharge channel in the vicinity of a lateral opening, with a passage opening for the flue gases, with a guiding element projecting into the side opening of the flue gas discharge channel and with a connecting element for a gas-tight connection of the exhaust duct

smoke gases.

  Document DE-OS 33 17 308 discloses a pipe connection of a flue gas discharge channel and an air supply duct from a chimney section to a duct. a flue gas outlet and an air supply duct, respectively, from a single-hearth heating location in which at least one chimney section connection opening for the air supply duct of the flue single-hearth heating location is disposed offset relative to the air supply channel and communicates via a connecting channel extending inside the casing of the chimney section with the supply channel

of air.

  For this pipe connection, a special chimney piece must be provided which, when the chimney is built, must already be mounted exactly

in the planned place.

  We know from the article by T Jannemann, "Das L A S -

  System, Dezentrale Heizung ohne Raumluft ", published in" Sanitâr-und Heizungstechnik, Cahier 3, 1983 "to connect a single gas-fired single burner space later to an existing air and flue gas (LAS) chimney after have made the openings for the connection of the air supply and the flue gas discharge by means of a special diamond crown In this case, the connection ducts of the single-hearth heating space are These solutions have the disadvantage that, in particular, the flue gas outlet duct is not connected, in a gas-tight manner, to the flue gas duct. evacuation of flue gases so that stray air can enter the flue gas exhaust duct or flue gases can exit the duct and enter the duct

  supply air as well as in the air supply duct.

  Document AT-PS 386 271 discloses a pipe conduit connection, in which the external connecting piece is made in the form of a connection box placed on the outer wall of the air and flue gas chimney, to which to be connected the conduit

  supply line for the single-firing location.

  A flue gas exhaust duct of a smaller diameter has been coaxially inserted into the passage opening for the supplied air. The internal connection piece is made in the form of a chamotte ring which is applied by means of a concave-cylindrical application surface at the outer side of the flue gas exhaust duct or which is glued to it The internal connecting piece designated in the AT-PS 386 271 as connection block is traversed by a bushing of receiving device which has a flange at the side of the connection block remote from the flue gas discharge channel The flange has bores with female threads for tightening tightening screws associated with a clamping ring, and in the vicinity of the bores, at the bottom flange side, sleeves projecting into the block for receiving the threaded bolts. There is provided between the clamping ring and the flange a sealing plate which can be fastened with asbestos or a similar heat-resistant insulating material. By tightening the clamping screws, the heat-resistant insulating material is pushed radially towards the outside. inside, and it tightly fits the flue gas vent protruding through the hollow of the sealing plate so

  it serves as a guide element.

  The realization of the internal connecting piece according to this embodiment is relatively expensive, and the assembly requires a lot of address Since asbestos or a similar heat-resistant material does not have durable elastic characteristics, a slot can be used. after some time between the internal connection piece and the flue gas outlet pipe, so that the flue gases and the supply air are mixed In the socket in the internal connection piece, a condensate can accumulate which, over time, can cause the sealing disc to rot When there is a large gap between the outer wall of the air supply duct of the air and flue gas chimney and the internal connection piece, particularly long clamping screws are required for the realization according to document AT-PS 386 271 and which each have a rearward projecting head portion up to s the air supply chimney and supporting a guide ring for the

tubing of flue gases.

  As a result of the air supply duct, it is necessary to provide in this embodiment an additional connecting box which is screwed onto the outer wall of the air supply chimney of the air and flue gas chimney. montage of

  this junction box takes time.

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  The object of the present invention is to provide a gas-tight pipe duct connection for a flue gas duct guided in an air supply duct from a single fire place with a temperature. reduced flue gas, wherein these ducts can be gas tightly connected directly to the pipe duct connection, and wherein the duct connection can be mounted with simple means without any special tools to any later on an existing chimney with flue gas and air for a very long time a gas-tight connection of the ducts of the single-hearth heating site with the ducts of the air chimney

  and flue gas without control or subsequent work.

  This object is realized according to the invention in that the pipe duct connection is made in the form of a set of spare parts, in that the external connection piece can be inserted into a side opening of the outer wall of the chimney. air and flue gas with a front face flush with the plane of the outer surface of the outer wall, and may be gas-tightly connected to the outer wall of the air and flue gas chimney, it is provided for the reception of the air supply duct an air supply pipe starting from the passage opening, sealingly connected to the external connecting piece and preferably made with a double wall , which surrounds the flue gas pipe, in that the guide element is in the form of a bead projecting from the application surface of the internal connecting piece and surrounding the passage opening for the gases of smoke, in that the connecting element is formed as a pipe of the flue gas from the passage opening in the direction opposite to the bead and gas-tightly connected to the inner connecting piece and protruding in the passage opening, for the reception of the flue gas duct, in that the free cross-sectional area of the opening e

2702823

  The passageway at least increases in a partial region towards the free end of the bead, and in that the internal connecting piece can be connected to the external connecting piece by means of a removable fastening device. Nowadays, a machine is always available on a construction site which includes a grinder wheel, for example an angle grinder, which makes it possible to practice without difficulty in the outer wall of an air and flue gas chimney. rectangular aperture for receiving the external connecting piece and then, coaxially with it, in the wall of the flue gas channel also a rectangular opening for receiving the bead of the internal connecting piece The opening

  is mostly smaller than adding.

  For the assembly of the pipe duct connection, it is possible to apply to the internal connection piece in the vicinity of its application surface and to the zone contiguous to the outer circumference of the bead a filler for joints or the like, and then can press the internal connecting piece to the wall of the flue gas channel. In doing so, the bead penetrates into the opening and centers the internal connecting piece in the opening. internal connection is tightly connected

  gas and securely to the flue gas channel.

  The mounting is particularly easy because of the removable fastening device The external connecting piece is fixed by means of the fastener in the position coaxial with the internal connecting piece in the ajour, and the intermediate space can be filled with mortar or analogous In doing so, all the inequalities are smoothed, the removable fastening device ensuring a precise adjustment of the external piece relative to the flue gas tubing. After setting the mortar, the external connecting piece is connected in a gastight manner. and securely to the outer wall of the air and flue gas chimney Next, the fastener is detached so that the flue gas pipe can move, following the movements of the flue gas channel, to the flue gas channel. inside of the opening opening of the outer part in the vertical direction In this case, the flue gas duct is always driven by the a flue gas pipe made particularly long. A particular advantage of the invention lies in the fact that the outer connecting piece is not projecting on the outer face of the outer wall of the air and flue gas chimney, but that the front face is flush with the plane of this external face The air supply duct can be put in place directly in the air supply duct disposed inside the passage opening and preferably made with a

  double wall, external connecting piece.

  Another advantage of the present invention is that the inner connecting piece can be manufactured in one piece Since the flue gases of modern combustion locations have a reduced temperature, a condensate can form on the inner wall of the flue. flue gas channel by condensed water Due to the configuration of the passage opening, namely the free cross-sectional area which increases at least in a partial area towards the free end of the bead, a condensate coming out of the flue gas duct and flowing from the top along the inner wall of the flue gas channel of the flue and flue gas chimney is guided into the flue gas channel down It goes without saying that the partial area of which the free cross-sectional area increases, must be arranged when mounting the internal connection piece so as to be directed downwards Due to the increase in surfing ace in cross section, the inner wall of the passage opening is inclined in the vicinity of the bead skew down towards the flue gas channel so that the condensate can not enter

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  in the passage opening and therefore in the conduit

smoke gases.

  When the opening in the outer wall of the air and flue gas chimney is square, the external connecting piece preferably made of concrete may have a substantially square outer shape and a preferably round passage opening disposed approximately in the middle for the supplied air, inside which the duct can be arranged

smoke gases.

  The thickness of the external connection piece should be of such a size that it can be inserted with its end face in the outer wall of the air and flue gas chimney flush with the outer face of the chimney. The introduction of mortar in the space between the outer connecting piece and the ajour is facilitated when the circumferential face of the outer connecting piece is chamfered towards the end face. The connection of the air supply duct is particularly simple when the air supply duct for receiving the air supply duct is made with an air intake duct.

  double wall to the external connection piece.

  The rectangular opening in the wall of the flue gas channel is preferably quadratic in accordance with the external dimensions of the bead. It is therefore advantageous to save material for the internal connection piece if the application surface of the part internal connection preferably made of chamotte has a substantially quadratic outer contour in the middle

  which is disposed the passage opening.

  When the flue gas duct has a round cross section, it is recommended that the passage opening be round and that the bead has a circular ring base surface and a trapezoidal cross section, the outer shell of the flange having a cylindrical shape Due to the conical embodiment of the inner envelope of the bead, the inner wall of the passage opening, regardless of the position of the internal connecting piece, is inclined during assembly always in the vicinity of the bead in downward towards the flue gas channel so that the condensate can not enter the passage opening and therefore into the

drives smoke gases.

  To apply the internal connection piece to a flue gas channel in the form of a cylindrical tube, the

  application surface is concave-

  cylindrical Flue gas channels in the form of cylindrical tubes are usually manufactured with diameters

  in the range of 170 mm to 300 mm.

  Since small differences in measurement can be equalized by the seal filler, it suffices to simply manufacture two different internal connection pieces, including the surface radius.

  concave concave application is 100 mm and 125 mm.

  The connection of the flue gas duct is simplified when the pipe of the flue gases from the passage opening for the reception of the flue gas duct is made with a double wall. Preferably, the flue gas pipe has a length such that its free end is in the vicinity of the outer face of

  the outer wall of the air and flue gas chimney.

  When the gap between the double wall of the flue gas manifold corresponds to the wall thickness of the flue gas duct, the flue gas duct can be inserted into the flue gas duct, which makes it possible to time a movement following the axial direction Then we can

  introduce a sealing mass.

  An adaptation to the construction data is possible when the distance between the internal connecting piece and the external connecting piece is adjustable to the fixing device. The fixing device may consist, in the simplest case, of a machined part made for example of plastic foam which is removed after the setting

  filler and mortar.

  A particularly stable fastening device can be realized in the form of a pipe collar surrounding the flue gas pipe, adjustable in the axial direction, removably attached to the external connection piece,

  for example by retaining brackets.

  The bent parts of the retaining brackets can be fixed by means of screws starting from the end face and passing through the external connection piece. After the filling plaster and the mortar are taken, the screws can be removed, whereby the connection between the retaining brackets and the

  external connection piece is released.

  The invention will be better understood, and other purposes, features, details and advantages thereof

  will become clearer during the description

  explanatory text which will follow with reference to the accompanying schematic drawing given solely by way of example, illustrating a preferred embodiment of the invention, and wherein: FIG. 1 is a sectional view of the connection of FIG.

  conduit pipe according to the invention.

  FIG. 1 shows a pipe duct connection 10 with an internal connection piece 12 and an external connection piece 14 in the state connected to an air and flue gas chimney. The internal connection piece 12 consists of stapplique chamotte with an application surface 16 of concave-cylindrical shape to the outer side of a flue gas channel 18 configured as a cylindrical tube surrounding a lateral opening 20 formed therein. The internal connecting piece 12 has a square outer contour and a round passage opening 22 disposed in the middle for the flue gases. As a guide member, a flange 24 surrounding the passage opening 22 has been arranged towards the internal space of the flue gas channel 18. and protruding into the aperture 20, with a circular ring base surface and a trapezoidal cross section. The outer envelope of the bead 24 is made in a cylindrical manner. and in the direction opposite to the bead 24, there is mounted as connecting element to the internal connection piece 12 a flue gas pipe 26 with a wall, and the inner casing widens conically towards the free end of the bead 24. double gas-tightly connected thereto and from the passage opening 22 for the reception of a flue gas duct which is not shown in the figure The intermediate space between the opening 20 and the bead 24 is filled with a seal filler 28 which is also applied to the application surface 16 for gas-tight attachment of the workpiece

  internal connection 12 to the flue gas channel 18.

  Between the flue gas channel 18 of the air and flue gas chimney and the outer wall 30 of

  this one an air supply channel 32.

  The outer concrete connection piece 14 is placed in an aperture 34 of the outer wall 30 of the air and flue gas chimney. The front face 36 of the external connecting piece 14 is flush with a plane with the outer face. 38 of the outer wall 30 The outer connecting piece 14 has a square outer shape and a round passage opening 40 disposed in the middle for the supply air The flue gas pipe 26 is arranged

  concentrically within the passage opening 40.

  The circumferential face 42 of the external connecting piece 14 is chamfered towards the end face 36, and the space between the peripheral surface 42 of the external connecting piece 14 and the aperture 34 is filled with mortar 44, by the external connecting piece 14 is gas-tightly secured in the outer wall 30 of the air and flue gas chimney. air 46 with double wall for receiving an air supply duct

  which is not shown in the figure.

  The flue gas pipe 26 and therefore the internal connecting piece 12 connected thereto is retained by means of a fastening device 48 concentrically to the air supply pipe 46 The fixing device 48 is constituted a pipe collar 50 surrounding the flue gas pipe 26 and displaceable in the axial direction which has two retaining brackets 52, 54 extending therefrom, diametrically opposed. 54 and 56 respectively, which are retained by means of bolts 60 and 62 starting from the end face 36 and passing through the external connecting piece 14.

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Claims (7)

  1 Hose conduit connection for lateral connection of an air supply duct and a flue gas duct disposed therein from a single-walled heating location to a wall external of an air and flue gas chimney, wherein the air supply channel is disposed at this outer wall and   the flue gas channel at some distance from it   ci, the pipe conduit connection having an external connecting piece with a passage opening for the supply air, and for the connection of the flue gas duct an internal connecting piece that can be connected to the flue gas channel and made of a heat-resistant material, with a concave-cylindrical application surface applicable externally to the flue gas channel in the vicinity of a lateral opening, with a passage opening for the flue gas, with a guide element projecting into the side opening of the flue gas channel and with a connection element for the gastight connection of the flue gas duct, characterized in that the pipe duct connection (10) is formed as a set of spare parts, in that the external connecting piece (14) can be inserted into a side opening (34) of the outer wall (30) of the chimney with air and flue gas with a front face (36) flush with the plane of the outer face (38) of the outer wall (30), and may be gas-tightly connected to the outer wall (30) of the air and flue gas chimney, in that for the reception of the air supply duct there is provided an air supply duct (46) extending from the passage opening (40) , gas-tightly connected to the outer connecting piece (14) and preferably double-walled, which surrounds the flue pipe (26), in that the guide element is in the form of a bead (24) protruding from the surface 13 2702823   for applying (16) the internal connecting piece (12) and surrounding the passage opening (20) for the flue gases, in that the connecting element is in the form of a flue gas pipe ( 26) extending in the opposite direction to the bead (24) of the passage opening (22), gas-tightly connected to the inner connecting piece (12), and protruding into the passage opening (40). for receiving the flue gas duct, in that the free cross-sectional area of the passage opening (22) increases at least in a partial area towards the free end of the bead (24), and in that that the internal connecting piece (12) can be connected to the external connection piece (14) by means of a device removable attachment (48).   2 pipe duct connection according to claim 1, characterized in that the outer connecting piece (14) has a roughly square outer contour, and that the circumferential surface is angled. towards the front face (36).   3 Pipe connection according to one of the   1 or 2, characterized in that the piece of   external connection (14) consists of concrete and the room   internal connection (12) chamotte.   4 Pipe connection according to one of the   Claims 1 to 3, characterized in that the opening of   passage (22) is round, and in that the bead (24) has a circular ring base surface and a trapezoidal cross-section, the outer envelope of the bead (24) being cylindrical and the inner envelope made of way to widen conically towards the free end. Pipe connection according to one of the   Claims 1 to 4, characterized in that the tubing of the   flue gas (26) is produced with a double wall at the   internal connecting piece (12).   6 Pipe connection according to one of the   Claims 1 to 5, characterized in that the difference between   external connecting piece (14) and the internal connecting piece (12) is adjustable to the fastener (48).   Pipe conduit connection according to claim 6, characterized in that the fastening device (48) is constructed as a pipe collar (50) surrounding the flue gas pipe (26) and displaceable in the axial direction, which is removably attached to the external connection piece (14), by   for example, by retaining brackets (52, 54).