NZ306453A - Method and device for treating ducts - Google Patents

Method and device for treating ducts

Info

Publication number
NZ306453A
NZ306453A NZ306453A NZ30645396A NZ306453A NZ 306453 A NZ306453 A NZ 306453A NZ 306453 A NZ306453 A NZ 306453A NZ 30645396 A NZ30645396 A NZ 30645396A NZ 306453 A NZ306453 A NZ 306453A
Authority
NZ
New Zealand
Prior art keywords
jet nozzle
duct
source
arms
propelling
Prior art date
Application number
NZ306453A
Inventor
Edouard Jean Francoi Piguillet
Original Assignee
Piguillet & Zonen Vof
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 Piguillet & Zonen Vof filed Critical Piguillet & Zonen Vof
Publication of NZ306453A publication Critical patent/NZ306453A/en

Links

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
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
    • 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
    • B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
    • B08B9/0495—Nozzles propelled by fluid jets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Nozzles (AREA)

Description

New Zealand No. 306453 International No. PCT/EP96/01635 TO BE ENTERED AFTER ACCEPTANCE AND PUBLICATION Priority dates: 19.05.1995; Complete Specification Filed: 17.04.1996 Classification:^) B08B9/02 Publication date: 24 September 1998 Journal No.: 1432 NEW ZEALAND PATENTS ACT 1953 COMPLETE SPECIFICATION Title of Invention: Method and device for treating ducts Name, address and nationality of applicant(s) as in international application form: PIGUILLET & ZONEN V.O.F., Industrieweg 82, NL-2651 BD, Berkel en Rodenrijs, The Netherlands METHOD AND DEVICE FOR TREATING DUCTS The invention relates to a method for treating ducts, for instance deeming thereof, in particular a duct for ventilation, comprising the steps of: - generating an underpressure in said duct, and 5 - propelling a jet nozzle by means of a reaction thrust said nozzle being connected to a source of fluid through a hose or the like.
According to a generally known method for cleaning air conditioning ducts, an underpressure is 10 generated in the duct system an a jet nozzle connected to a source of fluid is transported through the duct. The jet nozzle can be connected for instance to a source of pressurized air. With the powerful air jet accumulated dirt in the duct is loosened and removed from the duct 15 system by means of the underpressure. The jet nozzle is moved forward in the duct for cleaning due to the thrust of the outflowing pressurized air.
Such a jet nozzle is known from EP-A-0 077 562.
In this known method the problem arises that 20 the jet nozzle moves forward lying on the bottom of the duct as a consequence of the own weight of the jet nozzle and the connecting member between the source of fluid and the jet nozzle. This results in loss of efficiency, particularly in ducts of larger diameter.- It is moreover 25 difficult in this manner to adequately clean the enclosed corners in rectangular ducts.
The object of the present invention is to provide a solution herefor in that during moving said jet nozzle, said nozzle is kept roughly in the centre of the cross-sectional area of the duct by said propelling means, or at least to 30 provide the public with a useful choice.
Owing to this step the distance of the walls to the jet nozzle is to a very large degree the same in all 306453 directions, so that a considerable efficiency improvement is achieved.
A device for performing the method as stater' above comprises a jet nozzle with a rotor part and a 5 stator part and connecting means on the jet nozzle for connection to a source of pressurized fluid and means to propel said jet nozzle by means of a reaction thrust, said device being characterized in that said propelling means are formed by radially protruding flexible hollow 10 arms connected to said source of pressurized fluid. These arms strike with their end part against the wall of the duct and centre the jet nozzle roughly in the centre of the duct. The flexible arms preferably take a hollow form and are See further pages 2, 2a filed with our letter of 12.02.97. *m.ENDED Sfr*:ET PCT/EP95/' 01635 Encl. to mv letter of Feb. 12, 199.' 2 connected to the connecting means for the fluid. In this manner pressurized air is for instance also directed through the hollow arms to the corners of the duct, so that a sufficient cleaning takes place there also.
In order to enhance the stability of the central guiding of the jet nozzle, a second set of arms can be arranged as seen in longitudinal direction at a distance from the first arms so that support at differing mutual distance also takes place in longitudinal direction. 10 From WO 94/19118 is known a method and device for cleaning air ducts wherein a jet nozzle connected to a source of pressurized air is moved through a duct. The displacement occurs by means of a rigid feed tube, wherein during operation the jet nozzle carries out a swinging 15 movement along the inner wall of the pipe. Such a device is not suitable for cleaning rectangular or square ducts. Because of the uncontrolled movement of the jet nozzle it is moreover uncertain during operation whether all wall parts of the pipe are subjected to the cleaning opera-20 tion.
From USA 5347677 is known a construction wherein a device for cleaning ducts is used in which a blow-out piece is moved through the duct over wheels or a suitable frame. Air is blown from cleaning elements, wherein the 25 cleaning elements perform a sine-shaped movement through the duct during operation.
USA 510 9567 describes a device for cleaning air ducts, wherein a nozzle with radially protruding arms is rotated in the duct. The nozzle is connected to a hose 3 0 which is pulled through the duct. Flexible spacers hold the rotating nozzle with the arms at a distance from the walls of the duct for cleaning. 0645 f,Mc ended S ftp 306453 SU-A-919 768 discloses a device which is self-propelling by means of nozzles 5. By changing the angle 5 of inclination of the jet to the walls cleaning quality is improved. This device does not disclose means for keeping the jet nozzle substantially in the middle of the duct to be cleaned.
EP-A-0 274 831 discloses a method for treating 10 the air passage of an air conditioning system by introducing an air-borne mist into the air passage in order to coat the surface of the duct. No means for moving an air jet into the air conditioning system and keeping the jet nozzle substantially in the middle of the 15 duct are disclosed.
The invention is .further elucidated with reference to the drawings of embodiments.
In the drawing: Figure 1 shows schematically the method according to the invention, Figures 2-4 show details of the method and device • according to the invention, and (MBfflS) ^ Figures 5-7 show in perspective view with cut-away parts embodiments of the jet nozzle according to the invention.
An air duct system 1 for cleaning comprises a main 5 duct 2 and a number of side ducts, for instance 3, 4. Prior to cleaning, the grid in the side ducts is covered with cover foil 5. The closing member 7 in one of the openings of the main duct is also removed and the opening 6 is connected onto an installation 8 for generating 10 underpressure. Connected to this installation is a discharge device 9 for dust 9. The cleaning device 11 is placed into the duct through a second small opening 10 in the main duct 2. The device 11 is connected to a source 12 of pressurized air. The device 11 comprises a jet 15 nozzle 13 which is connected via the flexible hose 14 to the pressurized air source 12. Figure 5 shows in detail the construction of the jet nozzle.
As shown in figures 2-4, the jet nozzle is supported by means of flexible arms 15, 16, 17, 18 such that the 20 jet nozzle 13 is situated roughly in the centre of the duct. Due to the thrust of the outflowing pressurized air the jet nozzle is moved in the direction of the arrow 19. Air jets are emitted radially from the jet nozzle as according to arrow 20, whereby the accumulated dirt in 25 the duct is loosened. Due to the underpressure resulting from the device 8 the dirt is sucked out of the duct to the discharge device 9 in the direction of the arrows 21, 22. The radially protruding arms take a hollow form and are connected to the connecting means of the jet nozzle 3 0 for fluid under pressure, for instance pressurized air. The corners of the duct are hereby also influenced by the outflowing air and thus cleaned adequately.
Figure 2 shows a duct of relatively large cross section. Figure 3 shows a duct of considerably smaller 3 5 cross section. This results in the arms being bent fur ther than in the duct of fig. 2.
Figure 4 shows a duct of very limited cross section.
These embodiments show that in principle ducts with a wide range of inner diameters can be cleaned in this 4 0 manner.
FCT/EP96/01635 4 In order to increase stability still further a second set of radially protruding arms 23, 24, 25, 26 can be arranged at a distance from the first set of arms 15, 16, 17, 18. The two sets are connected by a connecting member 27 of limited flexibility.
It is noted that during withdrawal of the jet nozzle after cleaning, the arms can fold over such that the end parts thereof lie in a direction opposed to the position shown in figures 2-4.
Figure 5 shows details of the construction of the jet nozzle. The jet nozzle consists of a stationary part 3 0 and a rotating part 31. Connected to a stationary part 3 0 are the aforementioned arms 15, 16, 17 and 18. The pressurized air flows in the direction of the arrows through the stator part 30 and the arms 15, 16, 17 and 18. Pressurized air also moves to the rotating part 31. By choosing the inclination of the outflow channels in a suitable manner, the rotor 31 can be provided with a rotating movement. Figures 6 and 7 show different directions of the outflow channels. The rotating part can be mounted by means of a water bearing as designated with the reference numeral 32 which indicates a groove-like opening between the relevant parts.

Claims (7)

NEW CLAIMS INTELLECTUAL PROPERTY OFFICE OF NZ 2 1 JUL 19S8 RECEIVED
1. A method for treating the inside of a duct, in particular a duct for ventilation, comprising the steps of: - generating an underpressure in said duct, 5 and - propelling a jet nozzle by means of a reat • n thrust, said jet nozzie being connected to a source of fluid through a hose or the like, wherein said jet nozzle is kept roughly in the centre of the cross-sectional area ^ of the duct by said propelling means during moving said jet nozzle.
2. A method as claimed in claim 1, wherein the jet nozzle and said propelling means 15 as well are connected to a source of pressurized air.
3. A method as claimed in claim 1, wherein the jet nozzle and said propelling means as well are connected to a source 20 of pressurized air and coating material.
4. A device for performing the method as claimed in any one of claims 1-3, comprising a jet nozzle with a rotor part and a stator part and connecting means on the jet nozzle for connection to a source of pressurized 25 fluid and means to propel said jet nozzle by means of a reaction thrust, wherein . said propelling means are formed by radially protruding flexible hollow arms connected to said source of pressurized fluid. 30
5. A device as claimed in claim 4, wherein as seen in longitudinal direction, second roughly 6 radially directed flexible arms are arranged at at distance from said hollow arms.
6. A method as claimed in claim 1 substantially as herein described.
7. A device for treating ducts substantially as herein described with reference to figures 1 to 5 and 6 or 7 of the accompanying drawings. n.i. 2 \ ]UL ^
NZ306453A 1995-05-19 1996-04-17 Method and device for treating ducts NZ306453A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1000399A NL1000399C2 (en) 1995-05-19 1995-05-19 Method and device for treating channels.
PCT/EP1996/001635 WO1996036445A1 (en) 1995-05-19 1996-04-17 Method and device for treating ducts
GB9713692A GB2326685A (en) 1995-05-19 1997-06-27 Nozzle for cleaning ducts

Publications (1)

Publication Number Publication Date
NZ306453A true NZ306453A (en) 1998-09-24

Family

ID=26311808

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ306453A NZ306453A (en) 1995-05-19 1996-04-17 Method and device for treating ducts

Country Status (9)

Country Link
EP (1) EP0825906B1 (en)
CN (1) CN1094800C (en)
CA (1) CA2221385A1 (en)
GB (1) GB2326685A (en)
GR (1) GR3031221T3 (en)
NL (1) NL1000399C2 (en)
NO (1) NO975279D0 (en)
NZ (1) NZ306453A (en)
WO (1) WO1996036445A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2157711B1 (en) * 1998-02-27 2002-03-01 Vilarasau Alegre M Teresa DEVICE FOR CLEANING AIR DUCTS.
US6269519B1 (en) 1999-10-15 2001-08-07 Esteam Manufacturing Ltd. Duct cleaning device
FI108408B (en) * 1999-11-23 2002-01-31 Lifa Iaq Ltd Oy Air conditioning and other duct cleaning equipment
GB2384841B (en) * 2002-01-30 2003-12-17 Hamish Charles Gregor Mulliner Pipe cleaning tool
GB0722467D0 (en) * 2007-11-16 2007-12-27 Fastflow Pipeline Services Ltd Apparatus for cleaning an interior of a pipe
CN102580961B (en) * 2012-02-03 2013-11-13 重庆大学 Air duct cleaning device
CN106391602A (en) * 2016-11-22 2017-02-15 天津中化洁安科技有限公司 Air jet cleaning structure of special air conditioner pipeline sweeping robot
WO2024149911A1 (en) * 2023-01-12 2024-07-18 Fadelpo, S.L. System and method for removing scale from inside pipes

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4073302A (en) * 1977-01-18 1978-02-14 Jones Thomas E Cleaning apparatus for sewer pipes and the like
US4206313A (en) * 1978-05-30 1980-06-03 S. D. Meo Pipe cleaning nozzle
SU919768A1 (en) * 1980-03-18 1982-04-15 Белорусский Конструкторско-Технологический Институт Городского Хозяйства Apparatus for cleaning pipeline inner surface
US4780333A (en) * 1986-12-29 1988-10-25 Ford Motor Company Method for treatment of air conditioning system
US5109567A (en) * 1991-04-29 1992-05-05 Steamatic, Inc. Duct air sweeper
GB2282429B (en) * 1992-05-26 1996-02-14 Bruce James Lake Duct cleaning devices
US5438720A (en) * 1992-09-16 1995-08-08 Daneshvar; Yousef Toe protector and related devices
US5438729A (en) * 1992-12-28 1995-08-08 Powell; Samuel O. Apparatus for cleaning air ducts
US5347677A (en) * 1993-02-12 1994-09-20 Prentice William H Apparatus for cleaning isolated surfaces
SE9300645L (en) * 1993-02-26 1994-08-27 Johan Faxon Method and apparatus for cleaning pipelines
US5369834A (en) * 1994-05-17 1994-12-06 Groen; Douglas D. Rotary duct cleaning brush device
WO1996034706A1 (en) * 1995-05-05 1996-11-07 Jan Olofsson A method for cleaning pipelines in ventilating systems

Also Published As

Publication number Publication date
NO975279L (en) 1997-11-18
GB2326685A (en) 1998-12-30
NO975279D0 (en) 1997-11-18
WO1996036445A1 (en) 1996-11-21
EP0825906B1 (en) 1999-06-30
CN1184441A (en) 1998-06-10
NL1000399C2 (en) 1996-05-07
CA2221385A1 (en) 1996-11-21
GR3031221T3 (en) 1999-12-31
GB9713692D0 (en) 1997-09-03
EP0825906A1 (en) 1998-03-04
CN1094800C (en) 2002-11-27

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