Brushing – scrubbing – and general cleaning – Implements – Pipe – tube – or conduit cleaner
Patent
1994-02-16
1995-05-23
Roberts, Jr., Edward L.
Brushing, scrubbing, and general cleaning
Implements
Pipe, tube, or conduit cleaner
15 17, 15 3, 15 521, 15 884, A46B 1302
Patent
active
054169445
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a device for internal cleaning and/or treatment of elongated closed channels, or ducts, preferably ventilation ducts.
It is previously known to clean, for instance, ventilation ducts, or channels, by moving a brush backwards and forwards in the ventilation duct, so as to remove dirt that has adhered to the duct walls. It is also known to inspect such ducts with the aid of an automotive vehicle equipped with an inspection camera. The drawback with these known devices is that they cannot be used simultaneously, and consequently it is not possible to inspect the result of a cleaning operation until the brush has been withdrawn from the duct. If the inspection reveals an unsatisfactory result, it is necessary to reinsert the brush into the duct and carry out a supplementary cleaning operation, this supplementary cleaning operation being effected by "guess work" with the guidance of what was revealed by the inspection.
The object of the present invention is therefore to provide a novel duct cleaning device which will enable the duct to be inspected during a duct cleaning operation and a supplementary cleaning operations to be carried out when so necessary.
The object of the invention has been realized with a device having the characteristic features set forth in the following Claims.
The invention will now be described in more detail with reference to a non-limiting exemplifying embodiment thereof illustrated in the accompanying drawings, in which
FIG. 1 is a schematic perspective view of an inventive device equipped for the internal cleaning of ducts of round internal cross-section;
FIG. 2 is a schematic perspective view of an inventive device equipped for the internal cleaning of ducts having a square internal cross-section; and
FIG. 3 is a schematic perspective view of an inventive device equipped for the internal surface treatment of a duct.
The inventive device illustrated in FIG. 1 is intended for cleaning the internal surfaces of ventilation ducts. The device is primarily intended for cleaning work in which the internal surfaces of a ventilation duct are scraped or brushed clean mechanically and in which the material thus mechanically removed from the duct walls is sucked from the duct by means of a suction device, a vacuum cleaner, connected to an opening in the duct wall.
The device illustrated in FIG. 1 includes an automotive vehicle 1. The vehicle is preferably driven electrically and is connected to an electric power supply and which control means located externally of the duct, via a power and control cable, not shown. The vehicle is equipped with vehicle drive-bands 2 which pass over guide rollers 3 at respective ends of the vehicle. The diameter of the guide rollers 3 is smaller than the diameter of wheels or rollers 4 which support the drive bands 2 and are also positioned on a higher level than the supporting wheels 4. Thus, the drive bands 2 extend obliquely upwards at the ends of the vehicle 1, thereby enabling the vehicle to pass minor obstacles more easily. Respective drive bands 2 are driven by means of a drive wheel 5 mounted in the centre of the vehicle, as seen in the direction of its longitudinal axis, and acting directly on respective drive belts 2.
Various types of cleaning and/or surface treating units can be fitted to the vehicle 1, in accordance with requirements and also in accordance with the configuration and construction of the duct concerned.
The vehicle 1 of the FIG. 1 illustration is fitted with a cleaning unit in the form of a rotatable brush 6. The shaft 7 around which the brush 6 rotates extends generally in the same direction as the longitudinal axis of the vehicle 1 and also in the direction of the longitudinal axis of the duct to be cleaned. The brush 6 is therewith intended for cleaning a duct of internal round cross-section. The brush 6 is driven by compressed air, which can be delivered through a brush connection for rotation of said brush. The brush 6 is fitted to the vehicle 1 by means of a stand structure 8. The stand structure 8
REFERENCES:
patent: 3800358 (1974-04-01), Ryan
patent: 5020188 (1991-06-01), Walton
Lezdey John
Roberts, Jr. Edward L.
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