FR2838506A1 - Heat recovery device in sleeved chimney comprises ventilation unit, fan, compression chamber, safety and non-return valves, flexible stainless steel pipe, diffuser and stainless steel plate - Google Patents

Abstract

The heat recovery device in a sleeved chimney comprises a ventilation unit (K) with an orifice (a'), a fan (Y) supplied by a conductor (L) connected to an electrical power source, a compression chamber (Z), a safety valve (N), a non-return valve (M), an orifice (b'), a flexible stainless steel pipe (E), a diffuser (C) and a stainless steel plate (B). The ventilation unit drives air in the pipe to the diffuser which releases it in the conduit (H). A water inlet (D) in the pipe supplies the diffuser which releases this water into the conduit and prevents extension of the fire from the sleeve.

Description

control. - 1 This inverftion concerns three devices: a)

  Heat recovery in a sheathed chimney b) Sheath fire extension protection G) Extinguishing the chimney fire The chal eur dog aged by the smoke evacuation duct is traditionally lost at the outlet of the chimney, because the space between the interior of the bushels and this duct is closed at the bottom of the chimney, the strong heat made by the heater at the bottom of the duct, naturally rises along the bushels to be more important at the top of o the chimney, this causes overheating, and deterioration of the bushels, increases the deposit of tars which always form at the outlet

  of sheath by the temperature difference with the outside.

  Device a) se30n 1'invention allows: To recover this heat lost in a chimney, between the bushels and the sheath (or pipe) which evacuates the fumes given off by a stove, an insert or other combustion devices, this heat can be either drawn from the hood, and dissipated through its decorative holes in the room, or channeled into the hood to be distributed in another room

  housing, it also contributes to air renewal.

  zo De d i m in uer considerably the tar caused by slow combustion, and the temperature difference between the heat of the

  sheath and cold air at the outlet of the latter.

  To reduce the risks of overheating of the bushels, which cause

the bursting of the paths.

  z Fire in ducts or pipes, often caused by tars,

  traditionally split boisscaux because of the strong dogged heat.

  Device b) according to the invention makes it possible: To avoid bursting of the bushels by heat, in the event of a fire in the

  - sheath, and propagation of fire, in the case of faulty bushels.

  so Open fireplaces, and in particular old fireplaces where it is not uncommon for wooden beams to cross the duct, the Firefighters are traditionally called because very quickly overtaken by events, this

  quickly becomes dangerous for the rest of the house.

  Device c) according to the invention allows: ss To extinguish the fire of a chimney, simple to use, very fast and efficient, without going up on the roof, without risk of spreading to the dwelling, without the help of the Firemen and without dangen This device is only applicable to

open fireplaces (hearths, etc.).

  These devices can be mounted in straight or twisted sleeves.

  - 2 The devices according to the invention make it possible to remedy these drawbacks. Devices a) and b) have the particularity of being able to be

  - mounted separately or in duo. The device c) can only be mounted alone.

  The devices a) and b) mounted in duo indeed have, according to a first characteristic, a ventilation unit equipped with a motor-fan supplied with electric energy, a cold air inlet, a cold air outlet, coupled with an inlet cold water, a non-return valve and a safety tap. Its role is to draw air, roid received by a pipe up to height 3 of the chimney, to transmit it to a key, ffuseur muludirectionnel down. This air heats up on the sheath and the bushels, to be distributed in the hood. If water is used, the non-return valve comes into play to

  to prohibit the latter from entering the motor-fan.

  The device c) in fact comprises, according to a first characteristic, an inlet of cold water to the pipe incorporated in the chimney, which supplies a

  multidireGtional diffuser down and placed on the top of the chimney.

  According to particular embodiments: The fan unit can be of different power, controlled by

  zo a switch, or by a variable speed drive with switch.

  The arrival of cold water can be controlled by a thermal probe placed on the sheath, or in the chimney as the case may be. It gives its temperature information to a control relay, which opens or

  closes the one-way solenoid valve according to the information received.

  z The diffuser can have a different internal diameter, depending on the standardized dimensions of the ducts or pipes. It can be square or rectangular with different dimensions depending on the outlet of the conduits.

so-called osert chimneys.

  Devices a) and b) mounted in duo can be equipped at the outlet

  the ventilation unit of a manual or electronic air / water inverter.

  The accompanying drawings illustrate the invention: iigure 1 shows in longitudinal section the devices a) and b)

as a duo.

  Figure 2 shows the top view of the path equipped with

3s devices a) and b) in duo.

  FIG. 3 represents the longitudinal section of the chimney equipped with the device c) FIG. 4 represents the top view of the chimney equipped with the device c)

  o Figure 5 shows the longitudinal section of the ventilation unit.

  - 3 With reference to these drawings, the devices a) and b3 comprise: a ventilation unit (k) equipped with a motor-fan (Y), supplied by a conductor (L) connected to a source of electrical energy controlled by a switch (S), a pressure chamber (Z), a non-return valve (M) which prevents water from entering it, a safety tap (N) in the event of failure of (M), It is provided with an inlet (a ') connected to an inlet (W) which supplies it with cold air, at the outlet of an orifice (b') connected to the pipe (D) controlled by an opening tap ( V) capable of supplying cold water, and

to the air diffusion pipe (E).

  o The ventilation unit (K) aims to draw its air received from the pipe (W) in the flexible stainless steel pipe (E) diameter 21 mm., placed "in the corner of the bushels (F). This cold air arrives in the diffuser (C) er 'rigid stainless steel connected to the pipe (F) by a union connection called olive (without joint). It has an eye shape whose internal diameter corresponds to the standard sheath used, it is made of diameter 21 mm It is compulsory to weld stainless steel to its stainless steel support plate (B) which covers the orifice between the plugs (F) and the sheath (A). This support plate (B) is fixed to the chimney (G) by the screws (I). The role of the diffuser (C) is by its irrational mu ltid holes (P) d irrigated down to berate the air (

  or water if necessary) in the space () between the bushels (F) and the sheath (A).

  zo This cold air has no difficulty descending, due to its own weight and the action of the ventilation unit (K). it changes by passing through space (H)

  to be recovered in the hood (Q).

  The device b) in duo with the device a) is as follows: Open the tap (V) in moderation the water arrives via the hose (D) it closes the non-return valve (M) by its own weight, and his pressure,

  passes through the pipe (E) to the diffuser (C) which distributes it in the space (H).

  As soon as the first drops of water arrive at the bottom of the bushels (F) close the tap (V). Repeat the operation after the water has evaporated. The normal temperature reached 'close the valve (V) and open the

  tap (R) to drain the circuit.

  According to a variant not illustrated, these two devices can be mounted separately, it suffices: To keep the device a): remove the water supply pipe (D)

  cold and close the pipe access hole (E).

  s To keep the device b) remove the ventilation unit (K) and

  close the pipe access hole (E).

  With reference to these drawings, the device c) comprises a pipe (D) for cold water inlet controlled by a tap (V) The water rises directly in the stainless steel pipe (E) connected to the diffuser (C) by a fitting dit o unlon oiive (without joint). This stainless steel diffuser, welded stainless steel to its supports - 4 stainless steel fixings (T), themselves fixed by screws (l) to the chimney (G), transmits by its mulilUirectional holes downwards' the water in the conduit chimney (U). - The use of device c3 is as follows: Open the tap (V) in moderation, until you observe the first drops of water at the bottom of the path (G), close the tap (V). As soon as these drops evaporate. Open the tap again (Vj, repeat the operation until extinct, on fire. When the operation is complete, drain the

circuit using the tap (R).

    According to a variant not illustrated, this device can be mounted with a circular, square, rectangular diffuser or other forms selGn IGS dimensions or the shape of the outlet of the chimney (G). The stainless steel pipe (E) can be shaped

  with a diameter dimension different to 21 mm. but not within 14 mm.

  The stainless steel supports (T) can be mounted on a pivot or hinges in order to

s to facilitate branching.

  The device a) according to the invention is particularly intended for recovering the heat lost in chimneys equipped with a sheath or a

  pipe, and to decrease, see delete, the tars in the sheath or the pipe.

  The ispositi! b) according to the invention is particularly intended in the event of fire of the sheath QU of the pipe to prevent the extension of the fire, and

  protect the bushels against thermal shock.

  The device c) according to the invention is particularly intended for

  the extinction of so-called open chimney lights.

  The devices a) b) c) or a3 and b) in duo, according to the invention can a5 be placed in any places of the building. It is enough simply to connect it or to the pipe (E) by pipes to the standards in force. - 5

Claims (5)

CLAIMS \ 1) Heat recovery unit in a lined chimney, characterized in that it comprises, a ventilation unit (K) having an orifice (a '), a motor-fan (Y) supplied by a conductor (L) connected to a source of electrical energy, a compression chamber (Z), a safety valve (N), a non-return valve (M), an orifice (b '), a flexible stainless steel pipe (E), a diffuser (C), a stainless steel plate (B).   2) Heat recovery unit according to claim 1 characterized in that the motor-fan (Y), the compression chamber (Z), the tap (N), the non-return valve (M), the orifices (a ') and (b ') constitute a part of the ventilation unit (K). 3) Heat recovery unit according to claim 2 characterized in that the motor-fan is of different power depending on the length of the plugs (F). 4) Heat recovery unit according to claim 2 characterized in that the non-return valve (M) prevents water from entering the ventilation unit (K). ) Heat recovery unit according to claim 1 characterized in that the pipe (E) is made of flexible stainless steel connected by a steel fitting   stainless, said unlon olive, to the diffuser (C).   6) Heat recovery unit according to claim 1 characterized in that the diffuser (C) is circular in rigid stainless steel whose internal diameter corresponds to the sheath (A) used, and is equipped with multidirectional holes i (P) towards the bottom of the chimney, and welded stainless steel to its plate support (B).   7) Heat recovery unit according to claim 1 characterized in that the support plate (B) is made of rigid stainless steel, and covers the entire space (H) between the plugs (F) and the sheath (A), and in that it is placed on the chimney (G), and held by the fixings (1) .:   8) Heat recovery unit according to any one of the claims   previous, characterized in that the air entering through the orifice (a ') passes through the ventilation unit (K), exits through the orifice (b'), rises in the pipe (E), passes through the diffuser ( C) which sends it into space (H), when the motor-fan (Y) is   powered by an energy source through a conductor (L).   9) Heat recovery unit according to any one of the claims   previous characterized in that it further comprises a water inlet pipe (D) connected to the stainless steel pipe (E), itself connected by a connection called an unlon olive to the diffuser (C) in stainless steel, welded stainless steel to its support (B), - 6 the diffuser (C) sending its water received from the pipe (E) into the space (H) under the action of the tap (V).   s) Heat recovery unit according to claim 9 characterized in that the diffuser (C) is circular in rigid stainless steel whose internal diameter corresponds to the sheath (A) used, and in that it is equipped with multidirectional holes (P) down the chimney, and welded stainless to the plate