FR2675886A1 - Device for clearing smoke away from the window in fireplaces with closed hearth - Google Patents

Abstract

This device is noteworthy in that it is produced by two branches of the pipeline (6) through which external air arrives in the heating body: a first branch (9) under the hearth (2) directs the air, heated up by the hot coals, over the entire width of the window (8) via one or more suitable openings, and a second branch (13) at the top of the heating body directs the outside air heated up by the hood (4) over the top and over the entire width of the window through one or more suitable openings.

Description

 Device for dismantling the glass in chimneys with an enclosed firebox.

 The object of the invention relates to the technical field of heating apparatus, in particular closed hearth chimneys.

It is known to use in chimney stoves smoke control devices of the window to avoid the deposition of tars, but these arrangements are either provided only from the base of the light by derivation of the arrival outside air, and in this case, do not act effectively on the entire height of the glass is provided at the top and bottom of the glass, but they take the air in the room and then he There is no more tightness of the heating body, Because of this, the efficiency is very diminished, and this system no longer works with a distribution of aerolic heat or by forced convection, because the call of air in the room creates a depression that siphone the air of smoke extraction. It is the same with a
Controlled mechanical ventilation.

 The desem @ umage device according to the invention overcomes these disadvantages in that it retains the e @ ancheite to the heating body necessary for good performance and allows the smoke removal of the glass effectively on its full height .

For this and according to a first feature, the dice @ fumage of the glass is made by two branches of the external air inlet duct in the heater @ a first derivation under focus directs @ 'air warms by embers , across the entire width of the window by one or more appropriate apertures, and a second bypass in the upper part @u heating body directs the outside air heated by the throat, above and across the entire width of the glass by a or appropriate openings,
According to another characteristic, the smoke extraction device is implemented in a chimney equipped with an instailation of automatic regulation of outside air injection by a thermostatic flap placed in the outside air intake pipe at the lower front part. its arrival under the hearth, and by a vacuum oscillating louvre disposed in the upper part and in derivation relative to the outside air supply duct to direct when it is open.

excess outside air directly into the exhaust duct; the second upper smoke extraction bypass being connected to the outside air inlet ducting before said automatic regulating oscillating blade.

 Another characteristic lies in the fact that the smoke extraction device is implemented in a chimney equipped with a semi-automatic control unit for external air injection by a shutter obt @ rateur manual control placed in the pipe external air intake in the lower part before its arrival in the foyer, and by a low-pressure oscillating louvre disposed in the upper part in another external air supply duct communicating directly with the exhaust duct; the second upper smoke extraction bypass is connected to this second pipe before @adite oscillating ventelle.

These and other characteristics will become apparent from the following description;
To fix the subject of the invention without limiting it, in the accompanying drawings:
FIG. 1 is a schematic view illustrating a chimney equipped with an automatic outside air control installation and two venting by-passes.

 FIG. 2 is a diagrammatic view illustrating a chimney equipped with a semiautomatic external air injection control installation and two smoke extraction bypasses.

 FIG. 3 is a perspective view showing an exemplary embodiment of the upper smoke extraction ramp.

In order to make the object of the invention more concrete, it is now described in a nonlimiting manner illustrated in the figures of the drawings.
The chimney according to FIG. 1 which essentially comprises a heating body 91) with a combustion chamber (2) equipped with a grill (@) and a duct (4) for drawing by af @ and venturi with transversal heat exchanger (5). ), is connected with the outside by a pipe (6) opening under the fireplace.

 The automatic adjustment of the heat sink is obtained by a thermostatic flap (7) placed at the bottom of the pipe, before entering the fireplace. The outside air injected under the hearth passes mainly through the grill, but a part warmed by the embers, is directed towards the window (8) to go back upwards from it by a corridor (9) arranged on the floor. grid and the front wall of the heating body, efin clean the window over its entire width @ar a @ i @ air water at high temperature.

 In the upper part, above the front, a transverse ducting communicates the duct (6) of @ n @ ection of air e @ terieur with a duct @@@ d evacuation @@ s gax br @@ es.

 In this duct (10) is disposed a vacuum oscillating louvre (12) which when the external air injected is too large, automatically opens to direct the excess air into the exhaust duct (11).

 According to the invention, the upper smoke evacuation device of the window (8) is obtained by a branch pipe (13) connected to the pipe (6) or the pipe (10) before the oscillating blade (12). above the drier (4) for heating the derived air and opens into a member of the ramp type (14) disposed above the glass to project a curtain of air over the entire width of the window.

 In the embodiment according to FIG. 2, there are the same main components of the chimney, but in this case, the external air injection is regulated in a semi-automatic manner by a shutter (15) with manual control arranged in cup portion of the pipe (6) prior to entry under the fireplace, while the oscillating blade (12) is disposed in another external air supply channel (16) communicating with the exhaust duct (11) .

 According to this embodiment, the bypass (13) of smoke extraction is connected to the pipe (16) before the oscillating blade (12) and, as before it passes on the drain to open into the air projection rarsp (14) arranged above the window (8).

As an indication only, the ramp (14), as illustrated in FIG. 3, is made in the form of a box made of sheets welded together and leaving, unlike the connection with the branch (13), a space (e ) intended to form a longitudinal opening creating the air curtain to be projected along the window,
The advantages are clear from the description, it emphasizes yet efficient and complete smoke removal of the glass by the two branches delivering air at high temperature without decreasing the efficiency of the chimney because the air taken for the smoke extraction comes only from the outside, so without destroying the tightness of the heating body.

Claims (1)

-1- Device for removing smoke from the glass in the fireplaces ia closed hearth, characterized in that it is realized by two branches of the pipe (6) of external air inlet in the heating body a first branch <> under the firebox (2) directs the heated air through the embers, over the entire width of the window (8) by one or more appropriate apertures, and a second branch (13) in the upper part of the heating unit directs the outside air heated by the drier (4), above and across the entire width of the window by one or more appropriate apertures -2- Device according to claim 1, characterized in that it is implemented in a chimney equipped with an automatic control system for external air injection by a thermostatic flap (7) placed in the duct (6) of the outside air inlet at the bottom part before it arrives under the hearth (2) and by an oscillating louvre a depression (12) arranged in part e high and in derivation with respect to the external air supply duct to direct when it is open, the excess outside air directly in the evacuation duct (11); the second upper smoke removal bypass (13) being connected to the outside air inlet pipe (6) before said automatic regulating oscillating blade. -3- Device according to claim 1, characterized in that it is implemented in a chimney equipped with a semi automatic automatic external air injection control system by a shutter flap (15) manually controlled placed in the duct (6) of the outside air inlet in the lower part before it arrives under the hearth (2), and by a vacuum oscillating louvre (12) disposed at the top in another duct (16) of arrival d outside air communicating directly with the exhaust duct (11) 1) | the second upper smoke removal branch 913) being connected to this second pipe (16) before the said oscillating veil-4 Device according to claim 1, characterized in that the second branch (13) connected to the pipe (6 or 16) opens above the window in a ramp-type member (14) consisting of a box of welded sheets in which is arranged a longitudinal opening in the direction of the window, opposite the connection with the bypass (13)