FR2583505A1 - Fireplace hearth with heat recovery - Google Patents

Abstract

The invention relates to a heat recoverer which is able to be fitted to various forms of fireplace or to respect the decorative aspect desired by the users. It consists of cellular refractory bricks 1 made with notches 2 cast from refractory concrete, as well as [lacuna] in the corners 3. An aluminium sheath 4 open at its base and allowing hot air to diffuse via recovery outlets 5 rests on these bricks. The aluminium sheath is coated with refractory concrete 6. The joints 7 taken up and traced after casting are ensured by the use of a refractory adhesive. This recoverer according to the invention may, alone, constitute the hearth of the fireplace or use parts of the hearth.

Description

 The present invention relates to a heat recovery system for an open fire or closed hearth fireplace.

 Currently existing recuperators are generally made of cast iron or tiller, rarely aesthetic and often of standard dimensions.

 The current recuperator has the advantage over existing systoles of being able to adapt to different forms of chimneys, or of being able to respect the decorative aspect sought by users.

Made up of refractory separable elements, it can alone constitute the hearth or use parts of the hearth (heart, reluctant heart, or hearth plates).

 This recuperator made of refractory bricks with a heat release capacity 7 times greater than cast iron in equivalent weight.

 The recuperator is made of 14-hole honeycomb refractory bricks <i) reduced to 10 holes to provide a notch (2) on each of these bricks.

 The bricks thus notched are assembled with a refractory glue at the height and the desired size by the hearth 2 so as to superimpose the cells and the notches. This assembly is reinforced by a refractory concrete poured in the notches (2) ot in the angles (3) thus ensured of a complete blocking.

 In the alveoli circulates the frnis air arriving naturally or precically in the hearth of the chimney. This heated air is then collected at the top of the assembly of the bricks by an aluminum sheath (4), the open base of which rests on the honeycombed bricks. The hot air thus retained and channeled is diffused by two or more return outlets (5).

 The aluminum tank is coated with a refractory concrete, the horizontal upper part (6) of which will support the downstream of the chimney itself then covered with the hood.

 Another system, no longer with air circulation with water circulation in the copper tubes placed in the cells, can supply traditional central heating whatever the type of boiler.

 This kind of recuperator adapts to new chimneys but also and above all to existing chimneys of all shapes and sizes since the recuperator is shaped according to the shape of the chimney.

The joints (7) of the bricks are taken up again after gluing and tracing according to the desired aesthetic effect. The fire resistance of these
Joints is ensured by the use of a refractory glue.

Claims (2)

 i) Heat recovery unit made of honeycomb refractory bricks. Characterized in that it itself constitutes the hearth of the chimney and is not an added element thereof, or that it uses elements of the hearth according to the type of chimney to be fitted, by adapting to it thanks to its structure of refractory brick elements assembled by refractory glue.  3) Device as claimed in claim 2 characterized by the collection of heated air by means of an aluminum sheath (4) open at its base on the cells (1) and extended by two or more return outlets (5) which send air into the room to be heated.  2) Device according to claim 1 characterized by the arrangement of notches (2) on the bricks and angles (3) cast in refractory concrete intended to form an oloc in which the cells of the refractory bricks are swrerpose'es to ensure air circulation from bottom to top  4) Device according to the preceding claims characterized by the coating of the heat diffusion system in a refractory concrete (6) ciui serves as a support for all the dressing of the chimney and allows all aesthetic achievements.  5) Device according to claim 2 characterized in that the air circulation can be replaced by a circulation of water in copper tubes placed in the cells (1) of the refractory bricks and thus serving to supply central heating.  6) Device according to the preceding claims characterized in that this recuperator is adaptable to all open hearth fireplaces or closed hearth.