FR2485695A1

FR2485695A1 - Heat recuperator for domestic fireplace - has horizontal tubular steel grille with water feed and vertical hollow fire-back

Info

Publication number: FR2485695A1
Application number: FR8014472A
Authority: FR
Original assignee: MONTANT JOSEPH
Current assignee: MONTANT JOSEPH
Priority date: 1980-06-25
Filing date: 1980-06-25
Publication date: 1981-12-31

Abstract

The heat recuperator consists of a tubular horizontal grille constructed from solid drawn steel tubing. The tubes are connected into a front header. The header is supplied with water from alternative inlet connections at the back of the fireplace and through each end tube. The heated water flows through the horizontal tubes backwards to the vertical water jacket. Here a further increase in temperature takes place before the water is discharged through one or both of the outlets (S). The vertical water jack has fins to increase its surface area and rate of heat exchange.

Description

La présente invention concerne une chaudière d'âtre, ou récupérateur de calories pour une cheminée à foyer ouvert assurant le chauffage d'un fluide caloporteur par l'intermédiaire, d'une part, d'une grille dite mouillée car le fluide traverse les tubes de la dite grille et, d'autre part, d'un plateau vertical mouillé lui aussi, muni d'ailettes de récupération. The present invention relates to a hearth boiler, or heat recovery unit for an open hearth chimney ensuring the heating of a heat transfer fluid by means, on the one hand, of a so-called wet grid because the fluid crosses the tubes. of the said grid and, on the other hand, a vertical platform also wet, provided with recovery fins.

La nécessité d'un récupérateur de calories dans une cheminée à foyer ouvert ou "âtre", est imposé par le très mauvais rendement calorifique d'une combustion dite à foyer ouvert. The need for a heat recovery unit in an open hearth chimney or "hearth" is imposed by the very poor calorific efficiency of a so-called open hearth combustion.

Le fluide caloporteur est ensuite dirigé par un circuit pompé ou thermosiphonique vers l'échangeur, qui restitue sa chaleur à l'air ambiant ou à de liteau sanitaire. The heat transfer fluid is then directed by a pumped or thermosiphonic circuit to the exchanger, which returns its heat to the ambient air or to the sanitary strip.

Dans les dispositifs connus de ce genre, que le langage populaire a dénommé "chaudière d'âtre", l'esthétique n'est pas respectée, car-les tuyauteries de raccordement sont apparentes, la grille dite mouillée, n'est pas collectée sur le devant de la chaudière avec 2 arrivées latérales, et le plateau vertical n'est pas muni d'ailettes de récupération, ni même d'un déflecteur en partie haute couvrant la hauteur des ailettes d'où une diminution, non négligeable du rendement, et une altération de l'esthétique. In known devices of this kind, which popular parlance has called "hearth boiler", the aesthetics are not respected, because the connection pipes are visible, the so-called wet grid is not collected on the front of the boiler with 2 lateral inlets, and the vertical plate is not fitted with recovery fins, or even a deflector in the upper part covering the height of the fins, hence a significant reduction in efficiency, and a change in aesthetics.

La chaudière d'âtre, récupératrice de calories, selon l'invention, permet d'éviter ces inconvénients. The hearth boiler, recovering calories, according to the invention, makes it possible to avoid these drawbacks.

Construite en tôle d'acier, très épaisse pour le plateau (3), et en tubes étirés sans soudure pour la grille (2), de par sa conception, le fluide caloporteur se répartit uniformément sur l'ensemble des surfaces soumises au feu. Built in sheet steel, very thick for the plate (3), and in seamless drawn tubes for the grid (2), by design, the heat transfer fluid is distributed evenly over all of the surfaces subjected to fire.

Telle qu'elle est représentée, 2 raccords latéraux (e) en partie basse pour les entrées et 2 raccords latéraux (s) en partie haute pour les sorties, permettent son raccordement en circuit unique en double et en diagonale, dans la plus grande discrétion des tuyauteries de raccordements. As shown, 2 lateral connections (e) in the lower part for the inputs and 2 lateral connections (s) in the upper part for the outputs, allow its connection in single circuit in double and diagonal, in the greatest discretion connection pipes.

La grille mouillée construite en tube étiré laisse un passage de 30 à 35 mm aux braises et, située à 5,5 cm du sol, les tubes sont rapidement entourés de flammes, ainsi l'échange calorifique est excellent. The wet grid built in drawn tube leaves a passage of 30 to 35 mm to the embers and, located at 5.5 cm from the ground, the tubes are quickly surrounded by flames, thus the heat exchange is excellent.

Selon l'invention, les deux fers plats (6), soudés sur les deux tubes latéraux, font office de chenets, et permettent une meilleurs oxygénation de la flamme. According to the invention, the two flat irons (6), welded to the two lateral tubes, act as andirons, and allow better oxygenation of the flame.

La chaudière d'âtre récupératrice de calories selon l'invention, possède un plateau (3) arrière vertical, muni d'ailettes de récupération (4) uniformément réparties, avec en partie haute un déflecteur (S) couvrant la hauteur des ailettes. The heat recovery hearth boiler according to the invention has a vertical rear plate (3), provided with recovery fins (4) uniformly distributed, with a deflector (S) covering the height of the fins in the upper part.

Deux supports chenets (7) en fer carré verticaux retiennent le bois à sa bonne place, mais aussi peuvent recevoir en option des chenets décoratifs en bronze gravés aux initiales des utilisateurs. Two vertical iron andirons supports (7) keep the wood in its right place, but also can optionally receive decorative bronze andirons engraved with the initials of the users.

Claims

1. Caloric heat hearth boiler associated with an open hearth fireplace, ensures excellent combustion efficiency by the passage of a heat transfer fluid from the two rear inlets (e) to the front collector (1), the fluid then crosses a wet grid (2). The wet rear plate (3) fitted with recovery fins (4) persists in the heating of the fluid which is then evacuated by the two outlets (s). The deflector (5) traps the top of the flames, the two flat irons (6) oxygenate the flame, and the andirons supports (7) retain the wood.

2. Hearth boiler according to claim 1 characterized in that the fluid penetrates from the rear, and is distributed in the front manifold (1).

3. Hearth boiler according to claim 1 characterized in that the fluid passes through a wet grid (2), located at a good distance from the ground.

4. Hearth boiler according to claim l characterized by a rear plate (3) with double walls provided with vertical fins (4)

5. Hearth boiler according to claim 1 characterized by a deflector (5) at 135 degrees, intended to "trap" the top of the flames.

6. Hearth boiler according to claim 1 characterized by two horizontal flat irons (6) and two andirons supports (7) ensuring good combustion.