WO1996034706A1 - Procede de nettoyage de canalisations dans les systemes de ventilation - Google Patents

Procede de nettoyage de canalisations dans les systemes de ventilation Download PDF

Info

Publication number
WO1996034706A1
WO1996034706A1 PCT/SE1995/000496 SE9500496W WO9634706A1 WO 1996034706 A1 WO1996034706 A1 WO 1996034706A1 SE 9500496 W SE9500496 W SE 9500496W WO 9634706 A1 WO9634706 A1 WO 9634706A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
pipeline
ventilation system
ventilation
medium
Prior art date
Application number
PCT/SE1995/000496
Other languages
English (en)
Inventor
Jan Olofsson
Mikael Gustafsson
Original Assignee
Jan Olofsson
Mikael Gustafsson
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 Jan Olofsson, Mikael Gustafsson filed Critical Jan Olofsson
Priority to PCT/SE1995/000496 priority Critical patent/WO1996034706A1/fr
Priority to AU27559/95A priority patent/AU2755995A/en
Publication of WO1996034706A1 publication Critical patent/WO1996034706A1/fr

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
    • B08B9/049—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

Definitions

  • the present invention relates to a method for cleaning pipelines in ventilation systems in accordance with the preamble of Claim 1.
  • the object of the present invention is to provide a novel and improved method of the kind defined in the introduction which will assist in eliminating the drawbacks encumbered by the known technique.
  • This object is achieved in accordance with the invention with a method of the aforedefined kind having the characteristic features set forth in Claim 1.
  • the invention is based on the concept of generating a large subpressure in the ventilation system, by throttling the amount of air that can be sucked in through the openings of the ventilation system, wherein the medium extracted by the dust extractor is comprised of the pressure medium blown from the cleansing nozzle while the nozzle is at work.
  • the ventilation system In the case of the majority of ventilation ducts, it has been found beneficial to construct the ventilation system as a generally closed system, by sealing all openings of the ventilation system against atmosphere, wherein the only medium withdrawn by suction from the ventilation duct via the dust extractor is comprised of the pressure medium blown from the cleansing nozzle while the nozzle is at work.
  • the openings of the pipeline in which the extractor works can be provided with a respective air-permeable filter while remaining openings in the ventilation system are effectively sealed against the surrounding atmosphere, so as to allow a given quantity of air to enter the system.
  • Fig. 1 is a perspective view of one embodiment of a ventila ⁇ tion system installed in a building structure, with which the inventive method is applied;
  • Fig. 2 is a fragmentary view, partly in section, of a dust extractor connected to one end of the ventilation system shown in Fig. 1 and in which a cleaning nozzle works; and Fig. 3 is a side view of one example of a cleaning nozzle intended for use with the inventive method.
  • a ventilation system 1 installed in a building structure 2 and functioning to effect a change of air in the rooms or spaces 3 in said device of structure.
  • the ventila ⁇ tion system 1 includes a main pipeline 4 having connected thereto branch pipes 5 provided with openings 6 in the form of valves or like devices, these openings opening out in each room or space of the building structure.
  • Fig. 2 illustrates a dust extractor arrangement 7 which is connected to an inspection opening 9 , suction valve or like device included in the main pipeline 4 of the ventilation system, by means of a connecting device 8.
  • the connecting device 8 includes a flange 10 which seals against the wall
  • the dust extractor arrangement 7 can be activated to create a subpressure in the ventilation system 1, such that air will be sucked continuously from the ventilation system at the same time as air is sucked in through the opening 6 of said system.
  • Fig. 3 illustrates an example of a typical cleaning nozzle 13 that can be used when practicing the inventive method.
  • the nozzle 13 has a generally spherical configuration and is connected to a pressure medium source, for instance to an air compressor, through the medium of a delivery conduit 14 in the form of a flexible hose.
  • the cleaning nozzle is mounted at one end of the hose and can be inserted into the pipeline
  • the cleaning nozzle 13 includes a slot or one or more nozzle orifices 16 which face rearwardly of the direction in which the nozzle is inserted into the pipeline.
  • the air exiting from the slot or nozzle orifices - is effective in cleaning the inner wall surfaces of the pipeline and also generates reaction forces which drive the nozzle along the pipeline 4.
  • the cleaning nozzle 13 When the system is to be cleaned, the cleaning nozzle 13 is inserted into a ventilation duct to be cleaned and supplied with compressed air, to which a cleansing agent and/or a disinfectant may optionally be added. Compressed air will then flow at a high velocity rearwardly from the nozzle orifices 16 provided around the periphery of the nozzle 13, causing the nozzle to be driven along the duct by the reaction forces generated by the air exiting from the nozzle, while entraining the hose.
  • the nozzle 13 lies against the inner wall of the pipeline and is anoeuvered laterally by twisting the hose to one side or the other.
  • the duct is placed under a subpressure through the medium of the dust extractor arrangement 7, wherewith dust and solids dislodged or falling from the inner wall surfaces of the duct are extracted therefrom by the extractor.
  • the quantity of air that can be sucked into the ventilation system 1 when the dust extractor 7 is at work is restricted by throttling the openings 6 of the ventilation system in relation to the surrounding atmosphere.
  • the openings are preferably throttled before commencing to clean the system, by providing one or more openings with a cover 17 which includes a valve or like device by means of which the outlet area of the opening can be controlled and there- with also the amount of air that enters the system and the subpressure generated therein.

Landscapes

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

Abstract

Cette invention concerne un procédé de nettoyage de canalisations, notamment de buses d'aération et de conduits d'aération dans un système de ventilation (1), ce nettoyage étant effectué au moyen d'une tuyère de nettoyage (13) généralement sphérique reliée à une source d'un fluide sous pression, par exemple un compresseur d'air, par l'intermédiaire d'une conduite d'alimentation (14), la tuyère de nettoyage étant du type comportant une fente ou au moins un orifice (16) tourné(e) en direction opposée à la direction dans laquelle la tuyère est introduite, le fluide sortant par la fente ou par les orifices servant à nettoyer les parois internes de la canalisation et à créer des forces de réaction qui provoquent le déplacement de la tuyère le long de la canalisation (12). Ledit procédé consiste (a) à relier un extracteur de poussière (7) à une ouverture (9) ménagée dans une des canalisations (12) du système de ventilation (1) pour créer une dépression dans la canalisation conjointement à l'activation de la tuyère de nettoyage (13), (b) à introduire la tuyère (13) à l'intérieur de la canalisation et (c) à provoquer le déplacement de la tuyère (13) dans cette canalisation (12) à l'aide de la conduite d'alimentation (14). Selon ce procédé, avant l'étape (a), on empêche l'arrivée d'air de l'atmosphère environnante par étranglement (6) du système de ventilation (1) pour maîtriser la quantité d'air qui peut être aspirée à l'intérieur du système de ventilation (1), de manière à mettre le système de ventilation dans des conditions de forte dépression et à restreindre la quantité d'air pouvant entrer dans ce système, le fluide extrait du système par aspiration à l'aide de l'extracteur (7) étant constitué du fluide sous pression soufflé à partir de la tuyère de nettoyage (13), lorsque celle-ci fonctionne.
PCT/SE1995/000496 1995-05-05 1995-05-05 Procede de nettoyage de canalisations dans les systemes de ventilation WO1996034706A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/SE1995/000496 WO1996034706A1 (fr) 1995-05-05 1995-05-05 Procede de nettoyage de canalisations dans les systemes de ventilation
AU27559/95A AU2755995A (en) 1995-05-05 1995-05-05 A method for cleaning pipelines in ventilating systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1995/000496 WO1996034706A1 (fr) 1995-05-05 1995-05-05 Procede de nettoyage de canalisations dans les systemes de ventilation

Publications (1)

Publication Number Publication Date
WO1996034706A1 true WO1996034706A1 (fr) 1996-11-07

Family

ID=20397172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000496 WO1996034706A1 (fr) 1995-05-05 1995-05-05 Procede de nettoyage de canalisations dans les systemes de ventilation

Country Status (2)

Country Link
AU (1) AU2755995A (fr)
WO (1) WO1996034706A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2326685A (en) * 1995-05-19 1998-12-30 Piguillet & Zonen Vof Nozzle for cleaning ducts

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5003998A (en) * 1989-04-21 1991-04-02 Collett Donald H Method and apparatus for cleaning and sanitizing HVAC systems
WO1993024246A1 (fr) * 1992-05-26 1993-12-09 Bruce James Lake Dispositif de nettoyage pour des conduits
SE500894C2 (sv) * 1990-10-04 1994-09-26 Johan Faxon Förfarande och anordning för rengöring av rörledningar

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5003998A (en) * 1989-04-21 1991-04-02 Collett Donald H Method and apparatus for cleaning and sanitizing HVAC systems
SE500894C2 (sv) * 1990-10-04 1994-09-26 Johan Faxon Förfarande och anordning för rengöring av rörledningar
WO1993024246A1 (fr) * 1992-05-26 1993-12-09 Bruce James Lake Dispositif de nettoyage pour des conduits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2326685A (en) * 1995-05-19 1998-12-30 Piguillet & Zonen Vof Nozzle for cleaning ducts

Also Published As

Publication number Publication date
AU2755995A (en) 1996-11-21

Similar Documents

Publication Publication Date Title
US10493390B2 (en) Air or gas cleaning blower with spiral separation chamber
US20140034039A1 (en) Air exchange system with multiple air blowers or fans to produce a cyclone-like air flow
US20040132387A1 (en) Pipe renovating system and method
US5347677A (en) Apparatus for cleaning isolated surfaces
US5364473A (en) Treatment element and method for treating the inside of pipes
US20190001365A1 (en) Vehicle collision repair booth
SE9300645L (sv) Förfarande och anordning för rengöring av rörledningar
US5383973A (en) Method for cleaning heating, ventilating and air conditioning ducts
FI104238B (fi) Menetelmä ja laitteisto putkijohtojen puhdistamiseksi
WO1996034706A1 (fr) Procede de nettoyage de canalisations dans les systemes de ventilation
CN207463783U (zh) 通风柜
JPH0833227B2 (ja) 流体処理装置
CN106422614B (zh) 一种均匀送风的滤筒除尘器
CN109924925A (zh) 一种车间真空吸尘系统
US3916772A (en) Device at supply air means with throttling member
JPH0666439A (ja) クリーンルーム及びエアサプライユニット
US3759580A (en) Structure for transporting fluid-entrainable material
JP2002282635A (ja) バグフィルタおよびその運転方法
CN209758516U (zh) 气动输送系统的换向机构和气动输送系统
JP2544372B2 (ja) 局所除塵方法
CN110216036A (zh) 一种环保喷漆工作房
JP2005201488A (ja) ゾーン浄化システム
ATE278114T1 (de) Mit einer vorrichtung zur schwingungs- und schockverringerung ausgestattes t-stück in einer gasrohranlage und mit einem derartigen t-stück ausgestattete rohranlage
CN109675854A (zh) 一种风机盘管清洗装置
JP5207754B2 (ja) 汚染物質の拡散防止装置および拡散防止システム

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NO NZ PL PT RO RU SD SG SI SK TJ TM TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA