FR2538082A1 - Gas burner - Google Patents

Abstract

The body 1 of the burner 10 has the shape of a truncated pyramid whose small base 2 and side wall 3 are metal and whose large base 4 is constituted by a plate of perforated refractory brick which extends in an oblique plane with respect to a plane orthogonal to the small base. A barrel 6 connected to a gas injector traverses the lateral wall in the vicinity of the small base and extends over a certain distance within the body 1 parallel to the plane of the refractory plate 4.

Description

GAS BURNER
The present invention relates to a burner for a gas radiator.

In gas radiators the burner is mounted in a combustion chamber near a heat radiating element in order to bring this radiating element to a temperature suitable for heat radiation. The burner consists of a body in which is housed a gas injector and which has a metal wall pierced with holes for the passage of gas. In this known arrangement, an appreciable part of the thermal energy of combustion of the gas is lost to overcome the thermal inertia of the radiating element consisting of a refractory brick.

The problem which the invention aims to solve is to reduce the heat losses in order to improve the calorific efficiency of gas radiators and, consequently, to reduce the gas consumption required for a given calorific power.

The invention solves this problem by a gas burner consisting of a body having the shape of a trunk of a pyramid, the small base and the side wall of which are made of metallic material and the large base of which is a perforated refractory brick plate which extends in an oblique plane with respect to a plane orthogonal to the small base. A barrel connected to a gas injector passes through the side wall of the burner body and extends in the vicinity of the small base and extends for a certain distance inside said body. A diffuser is placed near the mouth of the injector barrel.

The invention is explained in more detail below in an exemplary embodiment illustrated in the attached drawings.

In these drawings, FIG. 7 is a front elevation view of a burner according to the invention with partial cutaway, FIG. 2 is a sectional view along the line II-II of FIG. 1.

The drawings show the burner 10 in the position in which it is mounted in the combustion chamber of a gas radiator. The burner 10 comprises a body 1 having the shape of a truncated pyramid with its small base downwards. The small base 2 and the side wall 3 of the burner body are made of metal, for example stainless steel. The large base 4 consists of a refractory brick plate perforated by a set of small holes 5. This refractory plate extends in an oblique plane relative to a vertical plane, orthogonal to the small base 2. The side wall 3 is pierced with an opening in the vicinity of the small base 2 for the passage of a barrel 6 connected to a gas injector (not shown).

In the illustrated embodiment, the injector barrel 6 extends axially over a certain distance inside the body 7 parallel to the plane of the plate 4.

When the burner 10 is mounted in the combustion chamber of a radiator, the refractory plate 4 is located opposite a porthole formed in the covering of the radiator. The gas injected by the barrel 6 propagates towards the plate 4 and ignites there through the holes 5. The calorific energy resulting from the combustion of the gas at the very right of the refractory wall 4 is radiated directly by the external surface of the refractory plate 4 without having to overcome the thermal inertia thereof.

The burner arrangement as described above makes it possible, for an equal radiating element surface, to obtain a given calorific value with a lower gas consumption than that of conventional burners. By way of illustrative comparison, a conventional burner with a gas pressure of 18 millibars, associated with a radiating element surface of 1060 cm2 has a calorific power PCI of approximately 10 kW (8650 kcal / h) for gas consumption 1.33 m3 / h. With the burner according to the invention, the same PCI calorific power is obtained with a gas consumption of approximately 1.27 m 3 / h, ie a reduction of approximately 4.5%, all other things being equal.

In the accompanying drawings, the reference 7 designates a support tab for a spark plug 8 and the reference 9 designates a diffuser locally isolating the outlet of the injector barrel 6 near the spark plug 8. The references It and 12 designate fixing lugs.

Claims (4)

1. Gas burner, characterized in that it consists of a body (1) having the shape of a pyramid trunk, the small base (2) and the side wall (3) of which are made of a metallic material and whose large base (4) consists of an openwork refractory brick plate, said refractory brick plate extending in an oblique plane relative to a plane orthogonal to the small base (2), the side wall (3 ) being pierced with an opening in the vicinity of the small base (2) for the passage of an injector barrel (6). 2. gas greaser according to claim 1, wherein the injector barrel (6) extends inside said body (1) parallel to the plane of the refractory brick plate (4). 3. Gas burner according to claim 2, wherein the body (1) comprises a diffuser (9) placed near the mouth of the injector barrel (6). 4. 3 gas grinder according to any one of the preceding claims, wherein the body (1) comprises a support tab (7) for a spark plug (8).