FI68289B - LAOSNING AV FODRINGSDELAR I EN SKORSTEN - Google Patents

Description

Chimney liner locking 68289

Partial condensation of flue gases in a brick chimney causes weathering, especially at the colder upper end of the chimney. The disadvantage is at its worst in brick chimneys connected to oil heating. The flue can be partially or completely lined with acid-resistant steel to reduce the adverse effects of condensation. A flexible pipe made of acid-resistant steel strip, which is particularly suitable for this purpose, can be used in the lining. This lining method is now quite common in Central Europe. Mainitun-. in the installation of such a liner, auxiliary parts are used, e.g., to hold the insulation in place or to conduct flue gases into the acid-resistant liner pipe. According to current practice, the structure of these parts has been such that they have not adhered to the liner pipe. The absence of infection has clearly made the installation more laborious and uncertain.

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The object of the invention is to eliminate the above-mentioned drawback, which is achieved by locking the chimney lining parts according to the invention, the features of which are set out in the claims.

The invention will be explained in more detail below with reference to the accompanying drawing, in which Figure 1 shows the parts used in the chimney liner (rain cover, liner pipe and masonry cone), Figure 2 shows the same from left side of Figure 1 and the masonry cone is locked to the liner, Figure 3 shows the masonry cone from above seen, Fig. 4 shows the locking strip in the masonry cone and other parts of the system before the internally and externally threaded liner pipe is inserted, Fig. 5 shows the same locking strip in the gripped position when the threaded liner pipe is pressed in place, Fig. 6 shows the liner-related corner connection part at both ends locking strips for adhesion, Fig. 7 shows a corner connection part with a bottom, Fig. 8 shows a locking strip obtained by cutting it from the material of the sleeve part, Fig. 9 shows a substitute for the locking strip obtained by pressing the sleeve part a 68289 Fig. 10 shows the installation step of the lining of the upper end of the chimney according to Fig. 2, in which the masonry cone is laid in place, but the insulation has not yet been placed in the space between the lining pipe and the brick chimney.

Figures 1 and 2 show an embodiment in which the parts are a rain cover 1, a liner pipe 2 threaded inside and outside, and a masonry cone 3 · Figure 3 shows a masonry cone 3 seen from above. The sleeve 4 of the rain cover 1 suitably fits inside the liner pipe 2. The outer surface of the sleeve 1 »has one or more locking strips 5 which hold the rain cover in place at the end of the liner tube when the sleeve 4 of the cover 1 is pressed inside the liner tube.

Since the liner tube 5 is threaded on both the inner and outer surface due to the manufacturing method, the parts can be separated from each other by twisting, if necessary.

The masonry cone 3 has similar locking strips 6 on the inner surface of the sleeve, since the lining pipe 2 is intended to be inserted inside the sleeve 7. In Fig. 2 the masonry cone 3 is locked in the liner pipe 2. Fig. 4 shows in more detail the locking strip 6 in the sleeve 7 of the masonry cone 3. It is spot welded to the sleeve 7 at one end 8 and its other end 9 is bent at its tip In Fig. 5, the liner pipe 2 is pressed into the sleeve 7 of the masonry cone and the tip 9 of the locking strip 6 keeps the masonry cone 3 and the liner pipe 2 firmly connected to each other. The fixed connection ensures that the lining installed in the chimney remains in place.

However, if the thin-walled liner pipe 2 ever has to be replaced, it is precipitated by unscrewing it from the masonry cone 3, which, as the name implies, is usually masonry in place in the chimney.

Figures 6 and 7 show other parts used in the chimney lining, which are also provided with locking strips 5 and / or 6, external or internal.

In Fig. 8, the locking strip 10 is obtained by cutting it from the material of the sleeve part 11 in the usual way, and in Fig. 9 the locking is formed by a barb or barbs 12 pressed into the sleeve part, the elasticity of which during installation is suitably based on a loose sleeve 13-

Figure 10 shows how the assembly according to Figure 2 is installed in the chimney. Once it has been decided to implement a suitable lining length, e.g. 3 meters, a masonry cone 3 is attached to the end of the liner pipe 2. Its horizontal strips 14 are bent upwards (in Figure 2) so that the masonry cone fits properly in the chimney. The flue 15 is cleaned more thoroughly than usual from the height at which the masonry cone is to be located. After this, the masonry

Claims (3)

1. Interlocking of chimney liners, which is made of a flexible acid-resistant liner (2) and associated liners 0> 3), by which the locking ties the parts of the acid-resistant chimney liner in one piece with the liner, characterized in that the inner and outer thread 2) the sleeve (ä, 7) of the part to be connected, the sleeve of which is placed inside or on the liner tube, has one or more strip-like or other flexible tongues or barbs clinging to the threaded groove of the liner tube outside or inside the sleeve . Chimney liner locking according to Claim 1, characterized in that the locking strip or strips (5, 6, 10, 12) are spot-welded at one end to the sleeve to be connected to the liner and that the locking strip or strips are bent at one end (9) to ensure adhesion to the threaded liner. . Chimney liner locking according to Claim 1, characterized in that the locking strip or barb is obtained from the wall of the sleeve towards the liner by stretching the wall (Fig. 9) or cutting from the wall (Fig. 8).