EP0223726B1 - Apparatus for assembling components of a cast iron heater - Google Patents

Description

The invention relates to a device for assembling the constituent elements of a cast iron boiler and devices for implementing this process.

Currently most of the accessories for cast iron boilers: hinges, chimney sweeps, nozzles, burner support plates, covers ... are fixed with screws, through drilled and tapped holes in the elements of the heating body. cast iron, or in the facade elements.

This method of fixing accessories and other elements requires machining, its cost is therefore high.

By way of example, document FR-A-567,761 shows a conventional door mounting device which requires drilling of each fixing lug provided on the fixing element.

Another door mounting device is described in document LU-A-72 826, this device also requires machining of the fixing lugs which equip the two elements of the heating body.

Furthermore, the known assembly means are always provided to cooperate with a single type of accessory, none can indifferently receive a chimney sweep, or a nozzle or a door hinge for example.

The object of the present invention is to provide a less expensive assembly device while simplifying the assembly of the parts, this object has been achieved by providing a universal fixing method, that is to say capable of fixing or receiving indifferently the 'any of the boiler accessories mentioned above.

According to a first embodiment in accordance with the invention, the front element for a cast iron boiler, of the element boiler type composed of two front elements (front-rear) and a plurality of heating elements, said façade element having a substantially rectangular shape and intended to be arranged vertically in front of or behind the body of the boiler, the longitudinal edges of said façade element being arranged vertically and the transverse edges horizontally, said façade element comprising fixing means coming directly from foundry without machining with said facade element and provided for fixing the accessories of the boiler, such as smoke nozzle, hatch, covering, hinge, is characterized in that the fixing means comprise two ribs perpendicular to the facade plane and extending continuously along each of the longitudinal edges and over the entire length of said facade element, each e rib comprising a plurality of slots intended to receive fixing accessories, these slots being open and opening onto the free edge of each rib and arranged so that the fixing pins are horizontal.

According to a second embodiment in accordance with the invention, the front element for a cast iron boiler, of the element boiler type composed of two front elements (front-rear) and a plurality of heating elements, said facade element having a substantially rectangular shape and being intended to be arranged vertically in front of or behind the body of the boiler, the longitudinal edges of said facade element being arranged vertically and the transverse edges horizontally, said facade element comprising fixing means coming directly from the foundry without machining with said facade element and provided for fixing the accessories of the boiler, such as smoke nozzle, hatch, covering, hinge, is characterized in that the fixing means comprise a discontinuous plurality of ears perpendicular to the facade plane and extending along each of the longitudinal edges of said facade element, each ear being rigid identified by two legs perpendicular to said ear, each ear comprising a light, intended to receive a fixing accessory, this light being open and opening onto the free edge of said ear and being arranged so that the fixing axes are horizontal .

In addition, the facade element according to either of the embodiments may include a boss having a plurality of ears each comprising an open lumen and opening onto the edge of the ear opposite the edge adhering to the facade element.

• - La figure 1 est une vue en perspective d'un premier exemple de réalisation d'un élément de façade pour chaudière en fonte.
• - La figure 2 est un équivalent technique du premier exemple de réalisation.
• - Les figures 3, 4, 5, 6, 7, 8 montrent différents modes d'assemblages qui peuvent être prévus sur le ou les éléments de façade de la chaudière en fonte.
• - La figure 8a montre à plus grande échelle une patte de la figure 8.

The invention will be better understood on reading the description below, made with reference to the appended figures for which:

• - Figure 1 is a perspective view of a first embodiment of a facade element for a cast iron boiler.
• - Figure 2 is a technical equivalent of the first embodiment.
• - Figures 3, 4, 5, 6, 7, 8 show different assembly modes which can be provided on the front element or elements of the cast iron boiler.
• - Figure 8a shows on a larger scale a tab of Figure 8.

The embodiment shown in Figure 1 is given by way of non-limiting example.

Figure 1 shows in perspective a front element (1) front or rear of a boiler (2) in cast iron, comprising cladding panels (3), the other constituent elements not being shown.

The facade element (1) comprises one or more peripheral ribs (4) coming directly from the foundry, having a plurality of housings (5) intended to receive fixing accessories: hinge (6), bolts or clips not shown, etc. ..

The embodiment shown in Figure 2 is a technical equivalent to that of Figure 1.

The facade element (1) shown in FIG. 2 comprises, on its periphery, a plurality of ears (7) coming directly from the foundry. Each ear (7) has a fixing plane (7a) and two tabs (7b) perpendicular to the plane (7a) to ensure rigidity and solidity. Said fixing plane (7a) comprises at least one light, the function of which is the same as that of the housings (5) of FIG. 1.

According to the two alternative embodiments, the plane of attachment of the ribs (4) or the ears (7) is perpendicular to the main plane (1a) of the facade element (1).

The facade element (1) can be a front facade element or a rear facade element, it can comprise, as the case may be, a cylindrical boss (8) coming from the foundry to cooperate with a smoke nozzle (9) ) or a hatch (10) (front panel).

Two methods of fixing the nozzle or hatch are presented in FIGS. 3 and 4, by way of nonlimiting examples.

In Figure 3, the boss (8) has two ears (11) each comprising a fixing lumen (11a) from the foundry.

There are two ears (12) on the smoke nozzle (9) each comprising a light (12a), placed opposite the lights (11 a). The assembly (nozzle (9) - boss (8)) is carried out by means of bolts.

In Figure 4, the boss (8) also has two ears (11) with lights (11a), the intermediate nozzle (9) has two ears (13) perpendicular to the axis of the nozzle and having two holes (13a ) from the foundry, the hatch (10) has two ears or extensions with holes (14a).

The assembly of the three parts (hatch (10), nozzle (9), boss (8) is carried out by means of angled screws (15) passing through the holes (13a) and (14a), positioned as shown in Figure 4 and cooperating with nuts not shown.

It is also possible to provide on the front element (1) one or a plurality of means for fixing the assembly rods, reference will be made, for example, to FIG. 5.

The facade element (1) comprises at least one blocking rib (16) from the foundry, the thickness of which is for example less than that of the element (1), at least partially closing a cavity or a notch of fixing (17) provided on the periphery of the facade element (1).

Said locking rib (16) has a slot or housing (18), preferably open, for receiving a threaded assembly rod (18) of the heating elements not shown. The assembly is carried out by washer system (19) and nut (20) in a manner known per se, an edge (16a) coming from foundry on the rib (16) prevents the sliding of the washer (19) outwards and serves as stops.

Figures 6, 7, 8 show 3 variants of the means for assembling the covering panels (3) with the facade element (1).

In Figure 6, the facade element (1) has on its peripheral blanks a plurality of pins (21) from the foundry and cooperating with clips (22).

The sets of pins (21) and clips (22) simultaneously maintain and position the insulation (23) and the covering (3). Figure 6a shows in detail an assembly, the pin (21) comprises a body (21a) of a length suitable for the thickness of the insulation (23) and a head (21b) suitable for receiving a clip (22).

According to another variant shown in FIG. 7, the covering panels have fixing notches (24), in the shape of an "L", cooperating by gravity with sockets (25) intended to be fixed on ears (7) or on the ribs (4) described above. The notches (24) are produced in a folding strip (3b) parallel to the panel (3).

According to another variant shown in FIG. 8, the covering panel (3) has on its sides a folding strip (3a), as in FIG. 7, perpendicular to the plane of the panel (3), and a folding strip (3b ) parallel to the plane of the panel (3).

Said folding strip (3b) comprises at least one notch (27), for example rectangular.

A tab (26) is provided, for example made of sheet metal and obtained by folding, comprising a bore (26a) and a slot (26b). Said tab (26) cooperates on the one hand with the panel (3) through the slot (26b) and on the other hand with one of the ears (7) by screw-nut system. The panel (3) is held in the slot (26b) by gravity at the notch (27).

FIG. 8a shows on a larger scale a reversible tab (26) which preferably comprises 2 slots (26b) for an assembly on the left or on the right of the facade element (1).

Of course, for the sake of clarity, only the boiler front panel has been shown on the diagrams, but the boiler may comprise 2, each of which may include one or the other or more of the elements d 'assembly which have just been described, depending on the type of boiler on which it will be mounted.

Compared to the facade elements of the prior art, the facade element according to the invention has, whatever the variant chosen, advantages in terms of manufacturing (economy of foundry core), in terms of machining (which is reduced or zero), on the assembly plan (which is simplified), and this results in a reduction in the cost price of the boiler.

Whatever the implementation variants chosen, the method of assembling the components of the boiler is therefore characterized in that the said components (9, 10, 3, 23 ...) are maintained by one at least front elements (1), front and / or rear, of the boiler.

Throughout the description and the claims, it will be understood that the terms "foundry member (s) mean" foundry member (s) with the facade element (1) ".

Claims (3)

1. FaCade section for cast iron boilers, of the section boiler type comprising two façade sections (front-rear) and a multiplicity of heating sections, the said façade section having a substantially rectangular shape and beeing forecast to be placed vertically at the front or the rear of the boiler body, the longitudinal sides of the said façade section beeing placed vertically and the cross sides horizontally, the said façade section fixing methods issued straight from foundry without tooling with the said façade section and beeing forecast for the fixing of the boiler fittings, such as flue nozzle, cleaning door, casing, hinge, is characterized in that the fixing methods (4, 7) have two edges (4) perpendicular to the façade plane and extending continuously along each of the longitudinal sides and on the whole length of the said façade section, each edge (4) having a multiplicity of bores (5) forecast to bear fixing fittings, these bores beeing opened and coming out on the free border of edge (4) and placed in order to make the fixing axises be horizontal.

2. Façade section for cast iron boilers, of the section boiler type comprising two façade sections (front-rear) and a multiplicity of heating sections, the said façade section having a substantially rectangular shape and beeing forecast to be placed vertically at the front or the rear of the boiler body, the longitudinal sides of the said façade section beeing placed vertically and the cross sides horizontally, the said façade section having fixing methods issued straight from foundry without any tooling with the said façade section and beeing forecast for the fixing of the boiler fittings, such as flue nozzle, cleaning door, casing, hinge, is characterized in that fixing methods (4, 7) have an intermittent multiplicity of ears (7) perpendicular to the façade plane and extending along each of the longitudinal bord of said façade section, each ear (7) is stiffened by two feet (7b) perpendicular to the said ear (7), each ear has a bore (5) forecast to bear fixing fittings, this bore is opened and comes out on the free border of the said ear (7) and is placed in order to make the fixing axises be horizontal.

3. Façade section for cast iron boilers according to one of the previous claims characterized in that it also has a boss (8) having a multiplicity of ears (11) each having a bore (11 a) opened and coming out on the ear's border which is opposite to the border adhering to the façade section.

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