WO1999055473A1 - Method of and apparatus for cleaning objects manually by use of solvents - Google Patents
Method of and apparatus for cleaning objects manually by use of solvents Download PDFInfo
- Publication number
- WO1999055473A1 WO1999055473A1 PCT/EP1999/003035 EP9903035W WO9955473A1 WO 1999055473 A1 WO1999055473 A1 WO 1999055473A1 EP 9903035 W EP9903035 W EP 9903035W WO 9955473 A1 WO9955473 A1 WO 9955473A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- chamber
- solvent
- cleaning
- objects
- atmosphere
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/006—Cabinets or cupboards specially adapted for cleaning articles by hand
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
- B08B15/026—Boxes for removal of dirt, e.g. for cleaning brakes, glove- boxes
Definitions
- This invention concerns a method of and apparatus for cleaning objects manually by use of solvents.
- cleaning means all operations carried out on objects, such as industrial component parts, to remove impurities, dirt or foreign bodies from their surface.
- a cleaning operation may involve degreasing new parts after being manufactured or worn parts for maintenance purposes .
- An object of the present invention is to provide a method and apparatus for putting the method into effect whereby these problems and dangers are obviated.
- the invention proposes a method of cleaning objects manually comprising the following steps :
- the cleaning process may involve spraying solvent onto the object or objects, or brushing the object or objects with solvent, or dipping the object or objects into solvent.
- any flammability risk is obviated. This is preferably accomplished by pumping air out of the cleaning chamber and introducing nitrogen, which is inert. However, any other inert gas or mixture of gases may be used in place of nitrogen. Alternatively, the air may simply be evacuated and not replaced so that the procedure is carried out in a partial or substantial vacuum.
- the first refrigeration step consists, through the intermediary of a refrigeration unit, in bringing the solvent to a temperature below its flashpoint. This must be undertaken before any cleaning operation is started.
- the second refrigeration step which is optional, follows drainage. This enables all residual vapours of solvent to be removed from the nitrogen before the latter is sent back out into - 4 - the atmosphere.
- the invention also proposes corresponding apparatus for cleaning objects manually by use of solvent comprising:
- a cleaning chamber having two sealed sleeves onto which gloves are fitted, which chamber is adapted to receive the object or objects to be cleaned and has sealingly securable closure means;
- Figure 1 is a diagrammatic front view of an exemplary embodiment of the apparatus of the invention
- Figure 2 is a side view of the same apparatus.
- Figure 3 is a plan view of the same apparatus.
- a practical embodiment of the apparatus of the invention comprises a cleaning chamber (1) preferably made of non-corrodible material mounted upon a technical compartment (2) .
- the chamber (1) has a sloping window (3) so that a user can observe the cleaning process.
- the chamber has a door (4) which allows access to the chamber and enables a user to put objects to be cleaned inside. When closed, the door (4) is sealed around its edges so that the interior of the chamber (1) is hermetically sealed off from the outside atmosphere.
- Below the window (3) there are two sleeves (5) projecting into the chamber (1) , to which gloves (not shown) are attached.
- control panel (6) Above the cleaning chamber (1) , there is a control panel (6) .
- Rails (9) are mounted in the interior, at the front and the back of the cleaning chamber (1) .
- the rails (9) enable a sliding platform or tray (10) , which may be of mesh, to be slid in and out of the cleaning chamber (1) when the door (4) is open.
- the sliding platform (10) holds the object or objects to be cleaned (not shown) .
- a housing (12) that contains a tank or reservoir (13) which is mounted on a transport trolley (14) enabling the tank or reservoir to be moved in and out of the housing (12) .
- a second smaller housing (15) which contains a pump (16) for supply of solvent to the cleaning chamber (1) and an extraction pump (17) for the removal of the solvent and its return to the tank or reservoir (13) .
- the technical compartment (2) and the housing (12) also contain refrigeration units (18) and associated pipework, the unit (18) in compartment (2) being a compressor, while that in the housing (12) is an evaporator.
- the cleaning chamber (1) , the technical compartment (2) , the pumps (16) and (17) and the tank of solvent (13) are connected by means of pipes (19) permitting the supply of solvent to the cleaning chamber (1) from the tank of solvent (13) but also - 7 - permitting return or drainage of the used solvent from the cleaning chamber (1) to the tank of solvent (13) .
- the pump (16) removes solvent from the tank (13) by way of pipe (19a) and supplies solvent to the chamber (1) via pipe (19b) .
- the extraction pump (17) removes solvent from the chamber (1) , first via a drain (11) , at the bottom, which may simply be a plugable aperture, and then via pipe (19c) , although the connection of the latter back to the pump (17) is not shown in the drawings.
- the pump (17) returns solvent to the tank (13) via pipe (19d) .
- an object to be cleaned is placed on the sliding platform (10) .
- the sliding platform is pushed in to the chamber (1) .
- the door (4) is sealed until the end of the cleaning programme.
- a cleaning programme is then selected on the control panel (6) above the chamber (1) . Air is extracted from the interior of the chamber (1) via pipe (7) and nitrogen is supplied via one of the ducts (8) . Thus, solvent is supplied to the chamber (1) .
- both the nitrogen and the residual vapours may be directly extracted by the extraction duct (7) equipped with an extraction system.
- the nitrogen when initially supplied, can be led into the solvent in the cleaning chamber (1) so as to assist in the cleaning process by bringing about a mechanical/mixing effect.
- the chamber (10) may be partially filled with solvent so that the object, upon the sliding platform (10) , is submerged, or so that it can be dipped into the solvent by the operative by the use of the gloves.
- the solvent may be directed into the cleaning chamber (10) by way of a brush (not shown) or by way of a spray head or nozzle (not shown) , so that it can be directed more precisely onto the object being cleaned by the user who may manipulate the brush or the object by having his/her hands in the gloves (not shown) .
- the invention is not limited to the precise details of the apparatus or method just described.
- the design of the casing which defines the cleaning chamber (1) may vary from that in the illustrated example.
- the window to the chamber need not be sloping, and may serve also as a door to the chamber. There may be a door on each side of the casing, if desired.
- the housing (12) for the solvent tank (13) may be behind the chamber (1) and the technical compartment (2) .
- the sliding platform (10) may be round and rotate inside the chamber. Numerous other variations in design detail are possible within the scope of the invention.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99922168A EP1084003B1 (en) | 1998-04-29 | 1999-04-29 | Method of and apparatus for cleaning objects manually by use of solvents |
GB0025478A GB2351802B (en) | 1998-04-29 | 1999-04-29 | Method of and apparatus for cleaning objects manually by use of solvents |
AU39312/99A AU3931299A (en) | 1998-04-29 | 1999-04-29 | Method of and apparatus for cleaning objects manually by use of solvents |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9809090.5A GB9809090D0 (en) | 1998-04-29 | 1998-04-29 | Method of and apparatus for cleaning objects manually by use of solvents |
GB9809090.5 | 1998-04-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999055473A1 true WO1999055473A1 (en) | 1999-11-04 |
Family
ID=10831137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/003035 WO1999055473A1 (en) | 1998-04-29 | 1999-04-29 | Method of and apparatus for cleaning objects manually by use of solvents |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1084003B1 (en) |
AU (1) | AU3931299A (en) |
GB (2) | GB9809090D0 (en) |
WO (1) | WO1999055473A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1208921A1 (en) * | 2000-11-28 | 2002-05-29 | Nash Inovations and Technology Limited | Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents |
EP2415532A1 (en) * | 2010-08-02 | 2012-02-08 | NCH Corporation | Parts washer |
CN105665399A (en) * | 2016-02-25 | 2016-06-15 | 赵齐赞 | Trough cover |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105352098B (en) * | 2015-11-20 | 2018-03-09 | 浙江金盾风机股份有限公司 | Nuclear power dry ice decontamination system vent cabinet |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5027841A (en) * | 1990-04-24 | 1991-07-02 | Electronic Controls Design, Inc. | Apparatus to clean printed circuit boards |
US5045120A (en) * | 1989-03-06 | 1991-09-03 | Electrovert Ltd. | Method for cleaning electronic and other devices |
US5107876A (en) * | 1989-07-19 | 1992-04-28 | Balisbex Pty, Ltd. | Parts washer |
US5205303A (en) * | 1990-12-06 | 1993-04-27 | Electrovert Ltd. | Liquid cleaning process and apparatus for circuit boards and the like |
US5273060A (en) * | 1992-06-26 | 1993-12-28 | Martin Marietta Corporation | Alcohol spray cleaning system |
-
1998
- 1998-04-29 GB GBGB9809090.5A patent/GB9809090D0/en not_active Ceased
-
1999
- 1999-04-29 EP EP99922168A patent/EP1084003B1/en not_active Expired - Lifetime
- 1999-04-29 GB GB0025478A patent/GB2351802B/en not_active Expired - Fee Related
- 1999-04-29 AU AU39312/99A patent/AU3931299A/en not_active Abandoned
- 1999-04-29 WO PCT/EP1999/003035 patent/WO1999055473A1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5045120A (en) * | 1989-03-06 | 1991-09-03 | Electrovert Ltd. | Method for cleaning electronic and other devices |
US5107876A (en) * | 1989-07-19 | 1992-04-28 | Balisbex Pty, Ltd. | Parts washer |
US5027841A (en) * | 1990-04-24 | 1991-07-02 | Electronic Controls Design, Inc. | Apparatus to clean printed circuit boards |
US5205303A (en) * | 1990-12-06 | 1993-04-27 | Electrovert Ltd. | Liquid cleaning process and apparatus for circuit boards and the like |
US5273060A (en) * | 1992-06-26 | 1993-12-28 | Martin Marietta Corporation | Alcohol spray cleaning system |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1208921A1 (en) * | 2000-11-28 | 2002-05-29 | Nash Inovations and Technology Limited | Method and machine with controlled tightness for the manual cleaning of workpieces with industrial solvents |
EP2415532A1 (en) * | 2010-08-02 | 2012-02-08 | NCH Corporation | Parts washer |
WO2012016909A1 (en) * | 2010-08-02 | 2012-02-09 | Nch Corporation | Parts washer |
CN103201051A (en) * | 2010-08-02 | 2013-07-10 | Nch公司 | Parts washer |
CN105665399A (en) * | 2016-02-25 | 2016-06-15 | 赵齐赞 | Trough cover |
Also Published As
Publication number | Publication date |
---|---|
GB9809090D0 (en) | 1998-06-24 |
GB2351802B (en) | 2002-06-12 |
GB2351802A (en) | 2001-01-10 |
GB0025478D0 (en) | 2000-11-29 |
EP1084003A1 (en) | 2001-03-21 |
AU3931299A (en) | 1999-11-16 |
EP1084003B1 (en) | 2004-12-22 |
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