FR2497906A1 - WATERPROOF ASSEMBLY FOR FORCE DRAFT BOILER - Google Patents

Abstract

THE INVENTION RELATES TO A SEALED ASSEMBLY FOR A HEATING APPARATUS. THE SAME FOLDED THIN SHEET 1 CONSTITUTES THE VERTICAL REAR WALL, THE HORIZONTAL UPPER COVER 1A AND THE HORIZONTAL LOWER BOTTOM 1B; BETWEEN THE CORNERS OF THE COVER AND THE BOTTOM ARE FIXED TWO V-SHAPED CORNERS 2 WHICH ENSURE THE RIGIDITY OF THE CARCASE AND WITH IT DELIMATE THE TWO SIDE OPENINGS AND THE FRONT OPENING ON WHICH THE PANELS ARE APPLIED TRIM PLATES. '' WATERPROOFING BY GASKETS 9 DOORS BY THE PANELS THEY ARE APPLIED TO THE EDGES OF THE OPENINGS. APPLICATION TO SEALED GAS FORCED DRAFT BOILERS.

Description

- 1 - The invention relates to forced draft boilers and relates to

  more specifically an assembly for sealing the device directly using the flat panels that form

its exterior cladding.

  In bath heaters or gas-tight boilers it is known that the combustion chamber, connected to the external atmosphere of the room is insulated in a gas-tight manner with respect to this room. In some cases an intermediate chamber for the admission of fresh air sealingly surrounds the combustion chamber, this chamber being itself incorporated into an outer casing

  to the device that covers all the mechanisms that compose it.

  In some types of equipment, since the seal is only required at the burner and the combustion chamber, the envelope is only sealed on a carcass above their level, while the rest mechanisms is arranged in a carcass

  lower unsealed and therefore more easily accessible.

  Anyway and for obvious reasons of economy, we are now looking to make external covers that constitute both the casing and the waterproof chamber that covers

  the combustion circuit, this hood obviously having to adapt rigorously

  the profile of the edges of the apparatus or the upper carcass

  and thus ensure a perfect seal.

  For this purpose, we know several types of hoods having the shape of

  shells that apply against joints arranged in

  provided on the entire circumference of the apparatus, or which fit

to other receiving shells.

  This is not without problems, on the one hand in manufacturing

  because the hood itself as well as the support on which it must

  dapter must be perfectly auxcotes, on the other hand

  because of its rigid design, the regular and sufficient crushing

  The joints necessary for good sealing require numerous and particularly precise fasteners for the support, taking into account the probable deformations of the cover and

  wear of joints over time.

  The invention proposes a solution which avoids these drawbacks in

  sealing is not ensured by the edges of a

  with a support correspondingly shaped, but is provided by the flat panels themselves which are intended to constitute the front and the side walls of the device. According to the invention, the upper carcass intended to enclose the burner and the combustion chamber is essentially formed of the same folded sheet which constitutes the vertical rear wall, the upper cover

  horizontal and the upper horizontal bottom; between the angles of the neck

  two V-shaped angles are provided for the rigidity of the carcass and define with it the two lateral openings and the front opening on which are applied the flat cladding panels which ensure the sealing by joints worn by the panels themselves that apply on the borders

openings.

  Other particular features and advantages of the invention

  will appear on reading the following description of an example

  embodiment with reference to the appended drawing which represents a view

  in partially exploded perspective of the armature of the device.

  The upper part of the apparatus shows the same folded sheet 1 which constitutes the vertical rear wall and which extends at the top to form the horizontal top cover 1a, and at the bottom to form the bottom horizontal bottom 1b. Two vertical angles 2 V-shaped

  two corners of the lid and the bottom are

  corresponding creations that are provided for therein. The sheet 1 and the angles 2 used to stiffen the assembly constitute the carcass

  upper sealed device which delimits a chamber within the

  of which are arranged the burner and the combustion chamber not shown, and the fume hood 3 which

  connected by an orifice 4 provided in the cover 1a, to a tubular

  not shown. An air distribution box 5 is attached to

  cover and admit fresh air into the chamber through a concen-

  This upper frame is fixed on a base which constitutes the lower unsealed carcass 6 inside which the mechanisms of which the pipes pass through are housed.

the bottom lb tightly.

  - 3 - The borders of the folded sheet 1 and vertical angles 2 delimiting two rectangular lateral openings and a frontal rectangular opening. The borders of each of these openings are in the same plane which allows to directly apply against them the panels of dressing of the device. The seal is provided by de joints 9 glued on the inner faces of said panels to the right of the borders of the corresponding openings against which it must apply. The panels are provided with notches 10 for attachment to unrepresented attachment lugs provided on the upper carcass of the side panels. They extend advantageously to the bottom of the lower carcass 6 to which they are also fixed by a system not shown. The covering panels (7, 8) thus ensure

  themselves sealing between the combustion chamber and the outside.

  Disassembly is extremely simple and allows easy access to

  the inside of the waterproof chamber.

  The invention is not limited to the embodiment shown,

  but also encompasses all constructive variants.

-4-

Claims (1)

R E V E N D I C A T I 0 N S   Watertight assembly for a forced draft boiler comprising an unsealed bottom casing containing the mechanisms of the apparatus and a sealed upper casing enclosing the burner and the combustion chamber, characterized in that the upper casing is formed essentially of a casing. same folded sheet (1) which constitutes the vertical rear wall, the horizontal top cover (1a) and the horizontal bottom bottom (1b), as well as two vertical V-shaped angles (2) connecting the corners of the cover and the bottom in such a way that the edges of the sheet and the angles limit   two side openings and a front opening on the-   which come to apply d; waterproof way the panels   cladding dishes (7, 8) reported on these openings.   / Assembly according to claim 1 characterized in that the borders of each of the lateral and frontal openings are in the same plane.   / Assembly according to claim 1 characterized in that the seals (9) are fixed on the inner faces of the panels (7, 8) to the right of the edges against which they must apply.