FR2862127A1 - Air overheating device for chambers hood, includes vertical wide conduit whose mouth splays towards front inside hood and base opens in tubes that cross furnace - Google Patents

Abstract

The device has a vertical wide conduit (6) whose mouth splays towards front inside a hood (1) and base opens in tubes (7) that cross a furnace (4). An opening of the hood is closed by a shutter (2) that controls the starting of a turbine. The turbine delivers cold air that is heated by the furnace. The tubes are fixed in holes pierced in front and rear walls of the furnace.

Description

- 1 -

  The present invention relates to heating wood apartments by its apparatus surrounded by a metal housing or a masonry construction topped with a hood and called inserts. Fresh air enters the base of the insert either naturally or under the effect of a turbine. It warms up along the firebox and the flue pipe and out through an opening at the top of the hood.

  The device of the invention allows to overheat the air before its output much lower in the apartment.

  According to this device, the opening at the top of the hood is provided with a flap.

  If the shutter is open, the appliance functions as a traditional insert, with an air inlet above the door through tubes that pass through the fireplace.

  If the shutter is closed, the air pushed by a turbine is already hot in the hood. Having no other outlet, it descends into a large vertical duct whose flared mouth is inside the hood and whose base opens into tubes that pass through the hearth and in which it is overheated before go out in the apartment. If the flap is closed and the turbine is shut off, the air is no longer circulating. To prevent the hot air from stagnating in the hood, the switch that controls the turbine is placed above the flap. The turbine stops only when the flap is wide open and presses the switch. The rear part of the vertical duct goes down to the bottom of the tubes. The front wall bent a little over 90 rests on the fireplace.

  According to particular embodiments: - The flared portion of the vertical duct may have a depression.

  - The rear wall of the vertical duct may be part of the hood.

  - The tubes can be fixed without welding in the front and back walls of the fireplace.

  - Lestubes can be surmounted by two steel plates.

  - A pivoting flap can be placed between the two plates.

  The illustrated drawings illustrate the invention: FIG. 1 shows, on the left side, a front view of the apparatus and on the right side a section on AA.

  Figure 2 shows a section along BB Figure 3 shows a section of the device placed in a masonry construction.

  With reference to these drawings, the opening at the top of the hood 1 is closed by a shutter (2). The fresh air pushed by the turbine (3) heats up along the fireplace (4) and the smoke pipe (5), reached the top of the hood (1) and having no other outlet, the hot air descends in a wide vertical duct (6) whose mouth flared forwards is inside the hood and whose base opens into tubes (7) which pass through the fireplace (4). A switch (8) which controls the turbine (3) is placed above the flap (2). The turbine is curtailed when the large open flap presses on the inter-switch and allows the hot air to pass through the traditional system. The: duct (6) is placed behind the pipe. . (5) it. goes down under the tubes (7), the front wall (9) bent at 90 rests on the fireplace (4).

  The top of the duct (6) has a recess (10) for the passage of the flue pipe (5).

  The rear wall of the duct (6) forms part of the metal hood.

  É The tubes (7), one end of which is slightly flared, are fixed without welding in holes drilled at the top of the front and rear walls of the fireplace (4). The holes of the front wall are chamfered to receive the flared end of the tubes (7) which is blocked by washers (11) screwed in the middle of the space left between two holes.

  The tubes (7) are surmounted by two steel plates (12) placed on the same horizontal plane, spaced from each other by 8 to 10 cms approximately and leaving between them and the walls of the fireplace a space of a few cms. They are each equipped with four flat irons (13) folded down and whose beveled end rests between two tubes A pivoting flap (14) can adjust the opening of. 1: space left between the two plates (12) The invention relates to the heating of the apartments.

Claims (8)

- 3 - CLAIMS   1) Device for superheating the air before leaving the insert characterized in that it comprises a large vertical duct (6) whose mouth flared forward is located inside the hood (1) and whose base opens into tubes. (7) crossing the firebox (4).   2) Device according to claim 1 characterized in that an opening in the hood (1) can be closed by a flap (2) which controls the start of the turbine (3).   3) Device according to claim 1 characterized in that the flared portion of the duct (6) has a recess 4) Device së'lo claims (1) and (3) characterized in that the rear wall of the duct (6) is a part of the hood.   5) Device according to claim (1) characterized in that the tubes (7) are fixed without welding in the holes drilled in the front and rear walls of the hearth (4), a slightly flared end of the tubes being housed in the holes chamfered front wall.   6) Device according to claim 4 characterized in that the tubes (7) are blocked by washers (1) screwed in the middle of the space left between two holes.   7) Device according to claims 1, 5 and 6 characterized in that the tubes (7) are surmounted by two pla-25 of steel (12) each provided with four small flat irons (13) folded down and of which the beveled end rests between two tubes (7).   8) Device according to claim 7 characterized in that the plates (12) disposed on the same horizontal plane 30 are spaced apart from each other by 8 to 10 cm and leave-eit. A device according to claim 8 characterized in that a pivoting flap (14) adjusts the opening of the space left between the two plates (12).