EP0398853A1 - An improved method for cleaning ventilation ducts - Google Patents

An improved method for cleaning ventilation ducts Download PDF

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Publication number
EP0398853A1
EP0398853A1 EP90850157A EP90850157A EP0398853A1 EP 0398853 A1 EP0398853 A1 EP 0398853A1 EP 90850157 A EP90850157 A EP 90850157A EP 90850157 A EP90850157 A EP 90850157A EP 0398853 A1 EP0398853 A1 EP 0398853A1
Authority
EP
European Patent Office
Prior art keywords
duct
cleaning
stream
bristle
brush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90850157A
Other languages
German (de)
French (fr)
Inventor
Per Inge Wallén
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0398853A1 publication Critical patent/EP0398853A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0552—Spherically shaped pigs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/04—Cleaning by suction, with or without auxiliary action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles

Definitions

  • This invention relates to an improved method for cleaning venti­lation ducts.
  • the purpose of the subject invention is to provide a method which irrespective of the construction and extension of the ducts ensures that these ducts are cleaned in a most satisfactory way and absolutely free from germs over the whole of their lengths, the invention making it pos­sible to carry out the method in a more effective way and above all in a less expensive way.
  • This goal and other have been achieved in the way indicated in the characterising clause of the main claim.
  • a building comprising two rooms 1, 2 provided with ventilation ducts 3, 4, 5.
  • the ducts are connected to a common ventilation device 6 and are provided with openings 7, 8, 9, 10, 11, 12, 13, 14 and 15 for exhausting air.
  • a suction source e.g. a suction car, a big ventilator, a large suction device or a dust trap is connected by means of an attachment 16.
  • All the openings 7, 8 and 9 are closed and a brush shaped in accordance with the cross section of the ventilation duct 3 or adaptable to said cross sec­tion is inserted e.g. in the opening 17 and is brought to pass with high velocity through the ventilation duct 3.
  • the velocity of the air may be as high as 20 - 50 meters per second, the velocity being choosed with regard had to the construction.
  • the brush or the bristle of the brush which by means of air is brought to pass rapidly through the duct could be made from steel or nylon.
  • a brush provided with steel bristle, then a brush with nylon bristle, and finally compressed air is blown through the duct in order to remove loosened dirt. If necessary, the brush may then be used for the cleaning.
  • the duct 3 is desinfected by letting a desinfection de­vice pass through the duct.
  • a desinfactant to kill germs that may remain on such sur­faces.
  • Such a desinfactant may have a lasting effect and may prevent the development of new bacteria cultures.
  • the brushes may be replaced by e.g. foam rubber balls (Type: Tapprogge) or balls of another material or of another shape.
  • foam rubber balls Type: Tapprogge
  • the duct should, when it is free of dirt and dust, be sprayed with a desinfactant. Such desinfactant in excess will be removed from the suction device with the air.
  • the desinfactant may be re­placed or completed by means of water steam which in addition may contain a solvent so as to clean the surfaces in the duct from fatty or greasy depositions. Nicotine may be absorbed in such fatty depositions on the walls.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Brushes (AREA)
  • Duct Arrangements (AREA)

Abstract

A method for cleaning of ventilation ducts. This method is using vacuum for creating a strong air stream of high velocity which is used for passing a cleaning element through the duct. This cleaning ele­ment could comprise a brush or a ball of foam rubber or like, which can adapt its shape to the cross section of the duct. When passing through the duct the element sweeps the inner surfaces of the duct and then loosens dirt adhering thereto. The method is completed with a treatment of the walls with a desinfactant and/or water stream which may contain a grease solvent.

Description

  • This invention relates to an improved method for cleaning venti­lation ducts.
  • Until now such cleaning has been carried out by means of sweep­-brooms which in a way known per se have been drawn back and forth in the evacuation duct and the moisture duct. One has also used a small "robot car" having a rotating brush and the method has been carried out with the assistance of a camera.
  • However, sweep-brooms can be used only in vertical ducts. The result then being unsatisfactory because the cleaning will be imperfect but nevertheless this method is a very expensive and time consuming one.
  • The purpose of the subject invention is to provide a method which irrespective of the construction and extension of the ducts ensures that these ducts are cleaned in a most satisfactory way and absolutely free from germs over the whole of their lengths, the invention making it pos­sible to carry out the method in a more effective way and above all in a less expensive way. This goal and other have been achieved in the way indicated in the characterising clause of the main claim.
  • Other features are obvious from the sub-claims.
  • The invention will now be described more in detail reference being had to the drawing showing two rooms in a building having ventilations ducts.
  • In the drawing there is shown a building comprising two rooms 1, 2 provided with ventilation ducts 3, 4, 5. The ducts are connected to a common ventilation device 6 and are provided with openings 7, 8, 9, 10, 11, 12, 13, 14 and 15 for exhausting air.
  • When cleaning e.g. the ventilation duct 3 one proceeds such that a suction source, e.g. a suction car, a big ventilator, a large suction device or a dust trap is connected by means of an attachment 16. All the openings 7, 8 and 9 are closed and a brush shaped in accordance with the cross section of the ventilation duct 3 or adaptable to said cross sec­tion is inserted e.g. in the opening 17 and is brought to pass with high velocity through the ventilation duct 3. The velocity of the air may be as high as 20 - 50 meters per second, the velocity being choosed with regard had to the construction. The brush or the bristle of the brush which by means of air is brought to pass rapidly through the duct could be made from steel or nylon. However, it is preferable to use first a brush provided with steel bristle, then a brush with nylon bristle, and finally compressed air is blown through the duct in order to remove loosened dirt. If necessary, the brush may then be used for the cleaning. As a final step the duct 3 is desinfected by letting a desinfection de­vice pass through the duct. Such a device is spraying the surfaces, free of dust, with a desinfactant to kill germs that may remain on such sur­faces. Such a desinfactant may have a lasting effect and may prevent the development of new bacteria cultures.
  • Should the ventilation duct at the entrance be so narrow that it is impossible to enter the brush there one may proceed such that a nylon line is fed into the narrow slot and the suction device is used for suc­tion of the line to the wider entrance at the opposite end of the venti­lation duct. At this end the brush is attached to the nylon line and is drawn to the first mentioned end of the ventilation duct whereupon one proceeds as described in the aforegoing.
  • The brushes may be replaced by e.g. foam rubber balls (Type: Tapprogge) or balls of another material or of another shape. As already mentioned the duct should, when it is free of dirt and dust, be sprayed with a desinfactant. Such desinfactant in excess will be removed from the suction device with the air. In many a case the desinfactant may be re­placed or completed by means of water steam which in addition may contain a solvent so as to clean the surfaces in the duct from fatty or greasy depositions. Nicotine may be absorbed in such fatty depositions on the walls.
  • The invention is of course not restricted to the shown and described embodiments but many modifications are possible without departure from the scope of the invention as defined in the appended claims. As already mentioned the body which by the strong steam of air is sucked through the duct and sweeps the surface clean, be shaped in many ways even though in the most cases a fully satisfactory result is obtained by means of brushes. Within the scope of the invention the brushes may take many shapes for being adapted the type of depositions in the ventilation duct.

Claims (4)

1. An improved method for cleaning ventilation ducts, charac­terised by the fact that a source of vaccum is used to bring a stream of air to flow through the ventilation duct, said stream being strong when compared with the ventilation stream of air through the duct, that at least one cleaning element which is adaptable to the cross section of the duct is sucked with high velocity through the duct by means of the air stream.
2. A method as claimed in claim 1, characterised by the fact that several brushes are passed through the duct, said brushes having bristles of different stiffness, the first brush having the bristle with the highest stiffness (e.g. steel bristle) and the last brush having the softest bristle (e.g. nylon bristle).
3. A method as claimed in claim 1 or 2, characterised by the fact that the duct after finished brushing is treated with a desinfactant.
4. A method as claimed in any of the preceeding claims, charac­terised by the fact that the duct is treated with water stream and/or a grease solvent.
EP90850157A 1989-05-18 1990-04-25 An improved method for cleaning ventilation ducts Withdrawn EP0398853A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8901773A SE8901773L (en) 1989-05-18 1989-05-18 PROCEDURE FOR CLEANING OF VENTILATION CONDITIONS
SE8901773 1989-05-18

Publications (1)

Publication Number Publication Date
EP0398853A1 true EP0398853A1 (en) 1990-11-22

Family

ID=20375981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90850157A Withdrawn EP0398853A1 (en) 1989-05-18 1990-04-25 An improved method for cleaning ventilation ducts

Country Status (4)

Country Link
EP (1) EP0398853A1 (en)
CA (1) CA2015631A1 (en)
FI (1) FI902078A0 (en)
SE (1) SE8901773L (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715086A1 (en) * 1994-01-14 1995-07-21 Bonair Sa Air duct cleaning procedure
EP0754501A1 (en) * 1995-07-21 1997-01-22 Bonair S.A. Cleaning method for pipeducts or conduits
EP0941776A1 (en) * 1998-03-13 1999-09-15 Akira Akazawa Air feed passage cleaning apparatus
FR2942025A1 (en) * 2009-02-11 2010-08-13 Aldes Aeraulique Air diffuser for dual flow controlled mechanical ventilation system in dwelling, has face comprising orifice that is arranged opposite to air intake opening, allows insertion of aspiration unit and is equipped with removable closing unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055287A (en) * 1934-07-17 1936-09-22 Giraud Carlo Separating, emptying, cleaning device for liquid containing pipings
DE819477C (en) * 1949-11-29 1951-10-31 Karl Deussen Device for cleaning pipelines and containers
US2906650A (en) * 1956-10-31 1959-09-29 Roll Dippers Inc Method of cleaning pipe lines
DE3529310A1 (en) * 1985-08-16 1987-03-05 Hoelter Heinz Method of cleaning ventilating shafts in residential houses and hospitals, schools, homes for the elderly, etc.
US4792363A (en) * 1988-02-01 1988-12-20 Franklin Jr Smead P Vent cleaning system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2055287A (en) * 1934-07-17 1936-09-22 Giraud Carlo Separating, emptying, cleaning device for liquid containing pipings
DE819477C (en) * 1949-11-29 1951-10-31 Karl Deussen Device for cleaning pipelines and containers
US2906650A (en) * 1956-10-31 1959-09-29 Roll Dippers Inc Method of cleaning pipe lines
DE3529310A1 (en) * 1985-08-16 1987-03-05 Hoelter Heinz Method of cleaning ventilating shafts in residential houses and hospitals, schools, homes for the elderly, etc.
US4792363A (en) * 1988-02-01 1988-12-20 Franklin Jr Smead P Vent cleaning system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715086A1 (en) * 1994-01-14 1995-07-21 Bonair Sa Air duct cleaning procedure
EP0754501A1 (en) * 1995-07-21 1997-01-22 Bonair S.A. Cleaning method for pipeducts or conduits
EP0941776A1 (en) * 1998-03-13 1999-09-15 Akira Akazawa Air feed passage cleaning apparatus
FR2942025A1 (en) * 2009-02-11 2010-08-13 Aldes Aeraulique Air diffuser for dual flow controlled mechanical ventilation system in dwelling, has face comprising orifice that is arranged opposite to air intake opening, allows insertion of aspiration unit and is equipped with removable closing unit

Also Published As

Publication number Publication date
SE8901773D0 (en) 1989-05-18
CA2015631A1 (en) 1990-11-18
FI902078A0 (en) 1990-04-25
SE8901773L (en) 1990-11-19

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