EP3144593B1

EP3144593B1 - Tool for cleaning chimney-flues

Info

Publication number: EP3144593B1
Application number: EP16425026.8A
Authority: EP
Inventors: Pier Davide Pilia
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-18
Filing date: 2016-04-01
Publication date: 2019-10-23
Anticipated expiration: 2036-04-01
Also published as: EP3144593A1; ITUB201579755U1

Description

Based on my research, on the market, there is not many systems for the cleansing that are found for chimney-flues, and the type are: manual pipe cleaning brush that they not succeed to cover a few bends or a full curve, or electric pipe cleaning brush system that work with a drill and that it has the inconvenient of having to take apart chimney-flue for being able to mount it. None of these tools are equipped of system with join branch to the inspection access that insert the probe and the exhaust fan (Fig. 3).
Tool for cleaning chimney flues is a particurarly effective system for the chimney flues of pellet stoves.
The tool is equipped with an appropriate head with rotary blower (Fig. 1 (C)) that is inserted manually inside of chimney-flues through probe line (Fig. 3), the cleaning of the internal surfaces happens with the compressed air that comes out from the rotary head (through n° 4 holes ø 1,2 mm.) against the internal wall of the chimney flue, favoring the strip of the soot (Fig. 4).
Such head is mounted on a probe line realized with pipeline in plastic and flexible material (Fig. 1 (A)) what allows his insertion inside a very long chimney flues and overcome of more curves.
Thanks to the help of a little compressor and a simple vacuum ash cleaner, which they are both connected, through a kit (Fig. 2), at the only inspection point of the chimney, positioned in the back of the stove. The cleaning of the chimney flue it can be done on the shortest times, without taking apart anything, leaving clean the floor and without getting on the roof (Fig. 3).
Kit is composed with:

1) The brush head is made out with small of thread arches from steel, diameter of 2 mm. (Fig. 1 (C)) assembled with a blower rotary head (Fig. 1 (D)) and connected by a directional joint from brass (Fig. 1 (B)) to the probe line (Fig. 1 (A)) through fast connectors. The blower, that rotates on a ball bearing ø 8-22, the shell is made from copper or steel and the nozzle is made from steel or brass, or copper (Fig. 5 (D)).
2) The connection adapter, that goes at the chimney flue inspection port, is made from polyethylene or a different plastic material, with conical base, that goes to the pipe, the branch that connect into the vacuum ash cleaner is connect at the entry of rotating head with probe line, anti-soot cap with laces that keep attach at the inspection door (Fig. 2).
3) The probe line is made from a suitable pipeline with flexible plastic material, such diameter of 15 mm. and 2 mm. thickness, and length mt. 10-15-20 (Fig. 1 (A)).
4) A compressor with air aspiration 180 litre/min., existing in commerce.
5) A vacuum type (vacuum ash cleaner), with shake filter, existing in commerce.

The complete kit of vacuum and air compressor is easily transportable.
Such system it make easier to the user that save on the maintenance, almost 50 % and boosts the commerce of pellet stoves, being the lowest costs in maintenance.

DETAILED BOARDS:

Figure 1 (Head with rotating blower, flexible hose and joints)

A)

Probe line ø 15 mm., thickness 2 mm., made with plastic material flexible, existing on the market named "Acorn";

B)

Directional joint made with brass, with 360 degrees rotation and inclination of 30 degrees;

C)

Curve arches, joint to the head, made from steel thread, thick 2 mm.;

D)

Rotating blower made from copper or steel, it stay connected with a ball bearing ø 8-22.
Figure 2 (branch fitting for the connection with the chimney flue and the vacuum ash cleaner)

E)

A fitting branch used for inlet, and an entry probe line with an inspection trap on chimney flue build up on several connections soldered with polyethylene or semi finished polypropylene ø 75 mm.;

F)

Antisoot plastic cup ø 75 mm. with probe line ø 15 mm.;

G)

Laces that tied up to the chimney flue .

H)

Anchor into the conical base and related to an inspection port that is located in the chimney flue;

I)

An anchor for exhaust fan;

J)

Anchor for entry head with blower and probe line.
Figure 3 (example of using the tool)

K)

Blower with filter shake;

L)

Pellet stove;

M)

An operator;

N)

Air compressor 180 liter/min;

O)

Chimney flue ø 100 mm. long 9 mt., with probe line inserted, that have n° 2 open bend and n° 2 close bend.
Figure 4 (Example of head with rotating blower that passes inside a chimney flue ø 80 mm.)

1)

n° 2 holes for air exit 2 mm. in the nozzle (6) in direction towards the vane of the dome vane (5);

2)

n° 4 holes 1,2 mm. in the dome vane (5) for compressed air exits against the internal chimney flue;

3)

Chimney-flue wall;

4)

n° 11 small thread arches made of 2 mm. steel;

5)

Cup dome vane;

6)

Head jet.
Figure 5 (rotary blower)

D)

Assembled rotary blower, from copper or steel;

7)

Spacer made from copper ø 8-10 .

8)

Ball bearing ø 8-22

6)

Nozzle from copper ø 8 with head ø 12 , having n° 2 holes ø 2 mm.;

5)

Dome vane made from copper (assembled);
Figure 6 (blower explosion group)

7)

Spacer made from copper ø 8-10;

8)

Ball bearing ø 8-22;

6)

Head jet made from copper ø 8, head a bit flat ø 12 with 2 holes from 2 mm.;

5)

Cup dome made from copper ø 22, thickness 1 mm., that shows the vane inside the dome, and have 4 holes from 1,2 mm.;

9)

n° 4 "L" vane made from copper sheet thickness 0,5 mm.;

10)

Cover cup dome made from copper sheet thickness 0,5 mm.
Figure 7 (head arches group)

11)

Brass fitting reduction sleeve 3/8" x ¼";

12)

Small thread arch made from steel, thickness 2 mm., total 11 pieces;

13)

Assembly brass washer ø 12-17;

14)

Rivet arches stopper ø 6 mm.;

15)

Chemical anchors made from metalcrylate hybrid adhesive.

Claims

Tool for cleaning chimney flues, particularly for cleaning chimney flues of pellet stoves. The tool is suitable to be used with a small air compressor with an average air flow of 180 liters per minute and a vacuum ash cleaner. The tool comprises an air supply unit and a branch fitting (E). The air supply unit comprising: a probe line 10 meters long (A) in flexible plastic material and featuring fast connectors; a directional joint (B) preferably made of brass; an oval shaped blower head made with thread of steel arcs (C) with an inside rotary blower (D) having a steel bearing encasing a head jet preferably made of copper or steel, the air supply unit being configured for blowing compressed air inside the chimney flue. The branch fitting (E) is configured to be connected to a chimney flue inspection port and the vacuum ash cleaner and the probe line.
Tool for cleaning chimney flues as claimed in claim 1, wherein the oval shaped blower head and thread of steel arcs with a thickness of 2 mm and have a low friction resistance.
Tool for cleaning chimney flues as claimed in claim 2, wherein the head blower is a rotary blower and blows air from the sides.
Tool for cleaning chimney flues as claimed in claim 3, wherein the rotary head blower blows from the sides and moves vanes.