US3761996A - Suction device - Google Patents
Suction device Download PDFInfo
- Publication number
- US3761996A US3761996A US00122984A US3761996DA US3761996A US 3761996 A US3761996 A US 3761996A US 00122984 A US00122984 A US 00122984A US 3761996D A US3761996D A US 3761996DA US 3761996 A US3761996 A US 3761996A
- Authority
- US
- United States
- Prior art keywords
- valve
- suction
- piston
- opening
- nozzle
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/018—Unsoldering; Removal of melted solder or other residues
Definitions
- ABSTRACT A suction device in the shape of an easily handled penshaped tool for collecting and keeping small particles and other objects.
- the suction is generated by an ejector comprised in the tool.
- the suction is started by closing an outflow opening for air under pressure supplied to the tool said closing bringing about the opening of a valve through the displacement ofa piston,'said valve and said piston being located in a common cylindrical chamber.
- the invention relates to a suction device provided with an ejector for generating suction by means of air pressure and with a collecting container connected to a suction channel of said ejector, the suction device having a suction nozzle and a valve which controls the air pressure to the ejector and is adjustable by means of a piston, said piston being movable under the influence of air pressure, which is adjustable by varying the area of an outflow opening in a branch conduit.
- the invention is mainly characterized by the fact that the piston and the valve are located in a common cylindrical chamber in which the air pressure is substantially uniform when the valve is open, whereby no tight seal for a piston rod between the valve and the piston is required.
- FIG. 1 is a diagram showing the air conduits in the suction device according to the invention.
- FIG. 2 is a longitudinal section through a part comprised in the suction device, the visible details of which only are shown.
- FIG. 3 is an outer view of the device according to the invention.
- a source of air under pressure (not shown) is connected to a flexible tube 1 which in turn is connected to an inlet channel 2 which opens into a valve chamber 3.
- Said chamber 3 is a part of a cylindrical chamber 4 by means of an opening through a valve seat 6.
- Said opening can be opened or closed by means of a valve member 5 which has an annular flexible packing round it.
- the valve member 5 is connected by means of a piston rod 7 to a piston 8 which is displaceable in the cylindrical chamber 4 and provided with annular packings for sealing.
- a branch conduit 9 is connected to the cylindrical chamber 4 between the opening of the inlet channel 2 and a part 4' of said chamber located. at one side of the piston 8.
- Said branch conduit 9 is provided with a screw throttle 10 for adjustment of the cross sectional area of said branch conduit and downstreams of said throttle with an outlet opening 11.
- a channel 12 leads to a nozzle 13 which supplies air to a venturi nozzle 14 which opens to the free air.
- a suction channel 15 is connected to the ejector 13,14 and opens into a con tainer 16 of transparent material which is provided with a filter 17, preferably of sintered bronze.
- the container 16 is provided with a nozzle 18 which has a spout. Said nozzle or said spout may be exchangeable so that straight nozzles or bent nozzles may be attached to the container.
- air under pressure is supplied through the bendable hose 1 and is streaming into the inner channel 2 and the branch conduit 9.
- the air pressure in the parts 3 and 4' of the cylindrical chamber 4 may be so adjusted in relation to each other, that the valve unit 5,7,8 will be kept in the position shown in FIG. 1 in which the valve 5 is in closing position, and air under pressure in the channel 2 and the branch channel 9 streams out of the opening 11 as a weak air stream.
- said opening 11 is closed for example by pressing the thumb against it, the pressure in the branch conduit 9 and in the part 4' of the cylindrical chamber will rise and therefore the pressure increases on that side of the piston 8 which is turned to the chamber part 4'.
- a suction in the spout of the nozzle 18 is obtained which can be utilized for removing small particles and transporting them to the container 16 where the filter 17 prevents said particles to be transported further into the suction channel 15.
- the suctioning spout 18 it is thus possible to remove small particles of any kind from places which otherwise would be difficult to get access to.
- All the air channels shown in FIG. 1 and the parts therein having the reference numerals 2-15 are arranged within an integral member 20 illustrated in FIGS. 2 and 3, said member being preferably cylindrical and made of light metal such as aluminium and removably connected to the container 16, which is preferably made of a transparent material such as transparent plastic. From the longitudinal section through the member 20 illustrated in FIG. 2 it is evident that said member has a bore 21 in the bottom of which the ejector nozzle 13 is formed while a separate venturi nozzle 14 is pressed into the bore 21.
- the suction device according to the invention is formed as an easily operable suction tool as shown in FIG. 3 which can be used in places which are difficult to get access to. Further, the particles removed by suction will be well collected in the container and can be taken care of when needed. Further, said particles are visible in the container so that it is evident when the container needs emptying. The air pressure required for the suction action of the tool is frequently easily accessible and it makes it possible to obtain a powerful suction. The controlling of said suction is easy and reliable.
- the tool according to the invention can also be used instead of a pair of pinchers for picking up and keeping small components, such as resistors and capacitors and the like, when such components are mounted in, for example, electronic devices of all kinds. The tool is also usable for removing liquid particles.
- a suction device comprising:
- a container having a suction nozzle opening into one end, and fluid conduit means opening into the end opposite the suction nozzle;
- ejector means located in said conduit means, and in communication with said nozzle;
- valve means located in said conduit means; an opening located in said conduit means said valve means being responsive to the closing of said opening to effect a flow of air from a source of air under pressure to said ejector means, thereby creating a suction at said suction nozzle.
- valve means includes a valve adjustable by a piston, which is movable on a rod under the influence of a difference in air pressures; the conduit means including a branch conduit in which said opening is located; the piston and valve being located in a common chamber in which the air pressure is substantially uniform while said valve is open; said branch conduit being connected to said chamber on one side of said piston, and air pressure is supplied to the piston on said one side through said branch conduit, and on the other side of the piston through the valve, said device including a throttle in the branch conduit upstream of the opening.
- a device as claimed in claim 2 in which said conduit means, ejector means, and valve means are all located in a generally cylindrical member, said container being removably attached to one end of said member.
- a device as claimed in claim 3 in which said member has an axial bore provided in the end opposite said container, said ejector means including a nozzle, the ejector nozzle being positioned within the bore and a venturi nozzle provided in the bore.
- a device as claimed in claim 4 in which said container includes a filter preferably of sintered bronze positioned between the suction nozzle and fluid conduit means.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
- Nozzles (AREA)
- Reciprocating Pumps (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE03804/70A SE349471B (de) | 1970-03-20 | 1970-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3761996A true US3761996A (en) | 1973-10-02 |
Family
ID=20262898
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00122984A Expired - Lifetime US3761996A (en) | 1970-03-20 | 1971-03-10 | Suction device |
Country Status (6)
Country | Link |
---|---|
US (1) | US3761996A (de) |
CH (1) | CH529931A (de) |
DE (1) | DE2113166A1 (de) |
FR (1) | FR2084944A5 (de) |
GB (1) | GB1306884A (de) |
SE (1) | SE349471B (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4915245A (en) * | 1988-05-12 | 1990-04-10 | General Dynamics Corp., Pomona Div. | Electrostatic-safe, air-powered, miniature vacuum generator |
US5940926A (en) * | 1997-08-19 | 1999-08-24 | Eastman Kodak Company | Multiple port evacuation apparatus having independent vacuum level control |
US20080202602A1 (en) * | 2007-02-22 | 2008-08-28 | Piab Usa, Inc. | Valve Controlled Vacuum Assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1090670A (fr) * | 1953-10-02 | 1955-04-01 | Grouvelle Arquembourg Et Par A | Dispositif de servo-commande par fluide |
US2746078A (en) * | 1950-11-02 | 1956-05-22 | Syntron Co | Vacuum cleaner |
US3516405A (en) * | 1967-06-20 | 1970-06-23 | United Aircraft Corp | Aspirator and control therefor |
-
1970
- 1970-03-20 SE SE03804/70A patent/SE349471B/xx unknown
-
1971
- 1971-03-10 US US00122984A patent/US3761996A/en not_active Expired - Lifetime
- 1971-03-12 CH CH363571A patent/CH529931A/de not_active IP Right Cessation
- 1971-03-18 DE DE19712113166 patent/DE2113166A1/de active Pending
- 1971-03-19 FR FR7109850A patent/FR2084944A5/fr not_active Expired
- 1971-04-19 GB GB2476371*A patent/GB1306884A/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2746078A (en) * | 1950-11-02 | 1956-05-22 | Syntron Co | Vacuum cleaner |
FR1090670A (fr) * | 1953-10-02 | 1955-04-01 | Grouvelle Arquembourg Et Par A | Dispositif de servo-commande par fluide |
US3516405A (en) * | 1967-06-20 | 1970-06-23 | United Aircraft Corp | Aspirator and control therefor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4915245A (en) * | 1988-05-12 | 1990-04-10 | General Dynamics Corp., Pomona Div. | Electrostatic-safe, air-powered, miniature vacuum generator |
US5940926A (en) * | 1997-08-19 | 1999-08-24 | Eastman Kodak Company | Multiple port evacuation apparatus having independent vacuum level control |
US20080202602A1 (en) * | 2007-02-22 | 2008-08-28 | Piab Usa, Inc. | Valve Controlled Vacuum Assembly |
Also Published As
Publication number | Publication date |
---|---|
CH529931A (de) | 1972-10-31 |
SE349471B (de) | 1972-10-02 |
DE2113166A1 (de) | 1971-10-07 |
FR2084944A5 (de) | 1971-12-17 |
GB1306884A (en) | 1973-02-14 |
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