DK143538B - ADJUSTABLE AGGREGATE FOR EXTRACTION OF GAS AND STEAMS ISAER WELDING - Google Patents

ADJUSTABLE AGGREGATE FOR EXTRACTION OF GAS AND STEAMS ISAER WELDING Download PDF

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Publication number
DK143538B
DK143538B DK296575AA DK296575A DK143538B DK 143538 B DK143538 B DK 143538B DK 296575A A DK296575A A DK 296575AA DK 296575 A DK296575 A DK 296575A DK 143538 B DK143538 B DK 143538B
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Denmark
Prior art keywords
suction
welding
extraction
isaer
steams
Prior art date
Application number
DK296575AA
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Danish (da)
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DK296575A (en
Inventor
G Klemmensen
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G Klemmensen
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.)
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Publication date
Application filed by G Klemmensen filed Critical G Klemmensen
Priority to DK296575AA priority Critical patent/DK143538B/en
Priority to SE7607384A priority patent/SE7607384L/en
Priority to DE19762629689 priority patent/DE2629689A1/en
Publication of DK296575A publication Critical patent/DK296575A/en
Publication of DK143538B publication Critical patent/DK143538B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/08Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0849Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid being turned through an angle when passing from one joint element to another
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/08Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/0804Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another
    • F16L27/0837Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends
    • F16L27/0845Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe the fluid passing axially from one joint element to another the joint elements being bends forming an angle of 90 degrees

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)

Description

143538143538

Den foreliggende opfindelse angår et indstilleligt aggregat til udsugning af luftarter og dampe, især svejserøg, fra arbejdspladser, især fra svejsepositioner og af den i indledningen til krav 1 angivne art.The present invention relates to an adjustable assembly for extraction of gases and vapors, in particular welding fumes, from workplaces, in particular from welding positions and of the kind specified in the preamble of claim 1.

5 De kendte aggregater til udsugning af luftarter og dampe er normalt forsynet med en eller flere bøjelige slanger mellem sugehovedet og udsugningsventilatoren respektivt udsugningsanlægget. Ved et kendt udsugningsaggregat for svejserøg er den bøjelige slange således ført langs med 10 et armsystem omfattende indbyrdes drejelige ledarme, som ved hjælp af fjedre og en kontravægt er indrettet til at understøtte sugehovedet i ønsket stilling i nærheden af en svejseposition. Den seneste udvikling indenfor området består i, at man har anbragt et armsystem af den 15 art, som f.eks. kendes fra såkaldte arkitektlamper indeni den bøjelige slange mellem udsugningsblæseren og sugehovedet. En sådan udformning kendes med såvel et armsystem bestående af stænger, som er indbyrdes drejelige ved hjælp af rene friktionsled, som af et armsy-20 stem, der er forsynet med stænger, som er indbyrdes forbundne ved et simpelt drejeled, idet den indbyrdes indstillelighed af stængerne styres af derimellem forbundne fjedre. Dette giver ganske vist aggregatet et noget mindre klodset udseende end tidligere kendte aggregater 25 af denne art. Men rent funktionelt har denne udvikling vist sig at være mindre heldig.5 The known air and vapor extraction units are usually provided with one or more flexible hoses between the suction head and the suction fan or the suction system respectively. Thus, in a known welding suction assembly, the flexible hose is guided along with an arm system comprising mutually rotatable articulated arms, which are arranged by means of springs and a counterweight to support the suction head in the desired position near a welding position. The most recent development in the field consists of the installation of an arm system of the 15 kind, such as for example. is known from so-called architectural lamps inside the flexible hose between the extractor fan and suction head. Such a design is known with both an arm system consisting of rods which are mutually rotatable by means of pure friction joints and by an arm system provided with rods which are interconnected by a simple pivot joint, the mutually adjusting of the rods are controlled by interconnected springs. Admittedly, this gives the aggregate a somewhat less clumsy appearance than previously known aggregates 25 of this kind. But purely functional, this development has proved to be less fortunate.

I forvejen var den væsentligste ulempe ved kendte udsugningsaggregater netop forbundet med brugen af bøjelige slanger f.eks. varmebestandige, tråd- eller glasfiberfor-30 stærkede kunststofslanger. Det er nemlig almindeligt kendt, at det frie gennemstrømningstværsnit i en bøjelig slange af den art, som anvendes i kendte udsugningsaggregater for svejserøg, formindskes væsentligt ved bøjning eller knækning af slangerne. Desuden har sådanne 143538 2 normalt spiraliserede slanger en meget ujævn og i strømningsteknisk henseende håbløs indvendig overflade. Den seneste udvikling, nemlig at placere bærearmsysternet indeni sugeslangen, er ligeledes i strømningsteknisk 5 henseende meget uheldig, idet dette sammenholdt med slangens ujævne inderside forstærker den tendens, slangen i forvejen har til at ville tilstoppes. Det er for denne vurdering vigtigt ikke at forglemme, at svejserøg er uhyre fed, hvilket er en medvirkende årsag til, at 10 sugeslangen ved aggregater med bærearmsystemet anbragt indeni den bøjelige slange relativt hurtigt vil til-stoppes eller få et stærkt reduceret gennemstrømnings-tværsnit.In advance, the main disadvantage of known suction units was precisely associated with the use of flexible hoses, e.g. heat resistant, wire or fiberglass reinforced plastic hoses. Namely, it is well known that the free flow cross-section of a flexible hose of the kind used in known welding fume extractors is substantially reduced by bending or cracking the hoses. In addition, such normally spiraled tubes have a very uneven and, in flow-technical terms, hopeless internal surface. The recent development, namely to place the support arm system within the suction hose, is also very unfortunate in flow technology, as this, together with the uneven inside of the hose, reinforces the tendency of the hose already to be clogged. For this assessment, it is important not to forget that welding fumes are extremely greasy, which is a reason why the suction hose for aggregates with the support arm system placed inside the flexible hose will be clogged relatively quickly or have a greatly reduced flow cross-section.

Placeringen af bærearmsystemet indeni sugeslangen med-15 fører også en anden ulempe, nemlig at det er forholdsvis besværligt at ændre aggregatets rækkevidde, idet dette udover en ændring af slangelængden også kræver indgreb i bærearmsystemet, som ved de kendte aggregater af denne art forløber hele vejen fra udsugnings-20 blæseren til sugehovedet. Den største ulempe ved disse kendte udsugningsaggregater er imidlertid den nævnte formindskelse af det aktive gennemstrømningsareal ved bøjning af slangen. Ydermere er de benyttede slanger normalt meget tyndvæggede, hvilket ofte kan med-25 føre, at der prikkes eller brændes huller i slangen.The location of the support arm system within the suction hose also causes another disadvantage, namely that it is relatively cumbersome to change the range of the assembly, since this, in addition to a change in the hose length, also requires interference with the support arm system, which in the known assemblies of this kind extends all the way from Extractor 20 fan for suction head. However, the major disadvantage of these known suction units is the mentioned reduction in the active flow area by bending the hose. Furthermore, the tubes used are usually very thin-walled, which can often cause holes or holes to be punctured in the tubing.

Fra beskrivelsen til DE-PS 851.540 kendes en indstillelig udsugningsindretning af den i krav 1's indledning angivne art, ved hvilken vinkelstillingen sker mellem to vandrette rørstykker, der er indbyrdes dre-30 jelige om lodrette akser af simple drejeled. Dette kræver brug af unødvendigt lange kraftige rør for at opnå en rimelig aktionsradius. Desuden er sugehovedet ved denne kendte indretning forbundet med et af de vandrette rør ved hjælp af en kompliceret teleskopisk 3 5 hæve-/sænkemekanisme.From the specification of DE-PS 851.540 an adjustable suction device of the kind specified in the preamble of claim 1 is known, in which the angular position occurs between two horizontal tubes rotatable about vertical axes by simple swivel joints. This requires the use of unnecessarily long, powerful tubes to achieve a reasonable range of action. In addition, in this known device, the suction head is connected to one of the horizontal pipes by means of a complicated telescopic raising / lowering mechanism.

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Opfindelsen har til formål at angive et udsugningsaggregat for svejserøg af den nævnte art, hvorved de nævnte ulemper ved såvel de kendte udsugningsaggregater med sugeslange som ved forannævnte indretning er imødegået.The invention has for its object to provide a welding fume extraction assembly of the said kind, whereby the aforesaid disadvantages of both the known suction hose suction units and the aforementioned device are counteracted.

5 Aggregatet ifølge opfindelsen er ejendommelig ved, at de hule ledelementer består af to således tæt sammen-spændte ledparter, at disse er indbyrdes drejelige med væsentlig friktion om i hovedsagen vandrette ledakser.The assembly according to the invention is characterized in that the hollow guide members consist of two parts which are so closely spaced together that they are rotatable with substantial friction about substantially horizontal joint axes.

Herved opnås på enkel måde, at man som følge af de an-10 vendte friktionsled kan udføre vinkelindstillingen uden at skulle løsne og spænde leddene. I forhold til forannævnte kendte indretning med stive, vandrette rørstykker opnås, at der for en givet aktionsradius takket være friktionsleddene kan anvendes et minimum af rør, som 15 tilmed kan udgøres af meget lette og tyndvæggede rør.This is achieved in a simple way that, due to the friction joints used, the angular adjustment can be performed without having to loosen and tighten the joints. Compared to the aforementioned known device with rigid horizontal tubes, it is achieved that for a given radius of action, thanks to the friction joints, a minimum of tubes can be used, which can even be made of very light and thin-walled tubes.

Aggregatet kan let opbygges med enhver ønsket totallængde, da det eneste, der skal afpasses, er længden af rørstykkerne, der selv kan overføre de nødvendige holdekræfter, således at yderligere holde- eller støtteorganer 20 imellem leddene er overflødig. Ligesom gennemstrømningen på i og for sig kendt måde kan foregå uhindret uanset rørstykkernes indbyrdes vinkelstilling.The assembly can be easily constructed with any desired total length since the only thing to be adjusted is the length of the pipe pieces which themselves can transfer the required holding forces, so that additional holding or supporting means 20 between the joints are superfluous. Like the flow in a manner known per se, can occur unimpeded regardless of the angular position of the tubes.

Ved det i krav 2 angivne opnås, en hensigtsmæssig forenkling af friktionsleddene, når de skålformede ledpar-25 ter i en foretrukket udformning er udformet med en cylindrisk vægdel, hvorfra rørstykkerne udgår.In accordance with claim 2, a convenient simplification of the friction joints is achieved when the cup-shaped joint portions in a preferred embodiment are formed with a cylindrical wall part from which the pipe pieces are formed.

Opfindelsen forklares i det følgende nærmere i forbindelse med tegningen, på hvilken, fig. 1 er et sidebillede af en udførelsesform for et ud-30 sugningsaggregat ifølge opfindelsen, og fig. 2 et opdelt snitbillede af en udførelsesform for ledelementerne til aggregatet ifølge opfindelsen.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail in connection with the drawing, in which: FIG. 1 is a side view of an embodiment of a suction assembly according to the invention; and FIG. 2 is a fragmentary sectional view of one embodiment of the guide members of the assembly according to the invention.

4 1435384 143538

Udsugningsaggregatet i fig. 1 omfatter en udsugningsventilator 2, som er monteret på en vægkonsol 4, og som er forbundet med en rørkanal 6 til bortledning af ventilatorens udblæsningsluft. Ventilatoren 2 er ved hjælp af 5 et centralt sugerør 8 drejeligt forbundet med en koblingsdel 10. Sugerøret 8 kan i stedet for en ventilator lige så godt være forbundet til et udsugningsanlæg, som er fælles for et antal af udsugningsaggregater. Dre-jeforbindelsen mellem sugerøret 8 og koblingsdelen 10 10 er udformet som en vulstforbindelse, idet en i sugerøret 8 udformet vulst er indlejret i en i koblingsdelen udformet vulst, således at koblingsdelen 10 kan drejes i et vandret plan i forhold til sugerøret 8. Koblingsdelen 10 er forbundet med et tudrør 12 på et ledelement 15 14, som er beskrevet nærmere i forbindelse med fig. 2.The suction assembly of FIG. 1 comprises a suction fan 2 mounted on a wall bracket 4 connected to a pipe duct 6 for venting the exhaust air of the fan. The fan 2 is, by means of 5, a central suction tube 8 pivotally connected to a coupling part 10. Instead of a fan, the suction tube 8 may equally well be connected to a suction system which is common to a number of suction units. The swivel connection between the suction pipe 8 and the coupling part 10 10 is formed as a bead joint, a bead formed in the suction pipe 8 being embedded in a bead formed in the coupling part, so that the coupling part 10 can be rotated in a horizontal plane with respect to the suction pipe 8. The coupling part 10 is connected to a spout tube 12 on a guide element 15 14, which is described in more detail in connection with FIG. 2nd

Et andet tudrør 16 på ledelementet 14 er forbundet med et stift rørstykke 18, hvis anden ende er forbundet med et ledelement 20 af samme udformning som ledelementet 14. Fra ledelementet 20 fører et andet rørstykke 22 til 20 et sugehoved 24. Mellem dette og rørstykket 22 er der indskudt et særligt rørstykke 26, som er aksialt drejeligt forbundet med røret 22, og som omfatter en 45° skrå drejeforbindelse 28 i form af en drejelig, falset rørforbindelse. Som antydet punkteret kan sugehovedet 24 25 herved indtage en ønsket uddrejet stilling i forhold til rørstykket 22.A second spout 16 on the guide member 14 is connected to a rigid pipe piece 18, the other end of which is connected to a guide member 20 of the same design as the guide member 14. From the guide member 20, another pipe piece 22 to 20 carries a suction head 24. Between this and the pipe piece 22 For example, there is inserted a special pipe piece 26 which is axially pivotally connected to the pipe 22 and which comprises a 45 ° inclined pivot joint 28 in the form of a pivotal, folded pipe joint. As indicated, the suction head 24 25 can thereby take a desired extended position relative to the pipe piece 22.

Det vil ses, at den drejelige koblingsdel 10, ledelementerne 14 og 20 samt det særlige knækrør 26 medgiver sugehovedet 24 fuldstændig placeringsfrihed indenfor aggre-30 gatets rækkevidde. Ledelementerne 14 og 20 er nemlig, som det fremgår af fig. 2, dannet af to i hovedsageligt lodret plan drejeligt anordnede ledskåle 30 og 32, hvortil de nævnte tudrør 12 og 16 er forbundne. Ledelementerne 14 og 20 er fortrinsvis ens. Drejeforbindelsen mellem 35 ledskålene 30 og 32 er udformet som en friktionsforbin- 143538 5 delse idet en rundtgående reces 34 i ledskålen 30 er beregnet til direkte at optage en rundtgående, udbukket kantflange 36 af ledskålen 32, således at der mellem recessen 34 og kantflangen 36 dannes samvirkende friktions-5 flader til fiksering af ledskålene 30 og 32 i indbyrdes vilkårlige vinkelstillinger.It will be seen that the swivel coupling portion 10, the guide members 14 and 20, and the special break tube 26 allow the suction head 24 to allow complete placement freedom within the range of the aggregate. Namely, as shown in FIG. 2, formed by two generally vertically pivotally arranged guide bowls 30 and 32, to which said spout pipes 12 and 16 are connected. The link elements 14 and 20 are preferably the same. The pivot connection between the 35 bowls 30 and 32 is designed as a frictional joint, in that a circumferential recess 34 in the bowls 30 is intended to directly receive a circumferential, curved edge flange 36 of the guide bowl 32, thus forming between the recess 34 and the edge flange 36 cooperating friction surfaces for fixing the articulation cups 30 and 32 in mutually arbitrary angular positions.

Den egentlige drejeforbindelse mellem ledskålene 30 og 32 består af en centralt gennem ledskålene forløbende i hovedsagen vandret aksel eller bolt 38, som er ført 10 gennem et snævert hul 40 midt i de let buede endeflader 42 af ledskålene 30 og 32. Disse er spændt sammen ved hjælp af udvendige hættemøtrikker 44 på hver sin ende af den gennemgående bolt 38. Mellem møtrikkerne 44 og ledskålenes endeflader 42 er der anbragt metalskiver 15 46. Rundt omkring bolten 38 er der anbragt et afstands rør 48, som er forsynet med udragende endeflanger 50, som er beregnet til at ligge an imod indvendige friktionsskiver 52 bestående af et egnet kunststof eller fibermateriale, dvs. at afstandsrøret 48 udover at styre 20 den indbyrdes glidningsfriktion mellem recessen 34 og kantflangen 36 langs ledskålenes ydre omkreds også danner en friktionsforbindelse mellem ledskålene ved hjælp af friktionsskiverne 52.The actual pivotal connection between the articulated cups 30 and 32 consists of a substantially horizontal shaft or bolt 38 passing through the articulated cups, which is guided 10 through a narrow hole 40 in the middle of the slightly curved end faces 42 of the articulated cups 30 and 32. by means of external cap nuts 44 at each end of the through bolt 38. Between the nuts 44 and the end faces 42 of the cups, metal washers 15 46 are arranged. Around the bolt 38 a spacer tube 48 is provided which is provided with protruding end flanges 50 which is intended to abut against internal friction discs 52 consisting of a suitable plastic or fibrous material, i.e. besides guiding the spacer 48, the spacing friction between the recess 34 and the edge flange 36 along the outer circumference of the guide cups also forms a frictional connection between the guide cups by the friction washers 52.

Det vil forstås, at friktionsforbindelsen langs med led-25 skålenes omkreds på grund af den forholdsvis store frik-toinsflade, som er dannet mellem kantflangen 36 og recessen 34, er særlig vigtig, idet denne friktionsforbindelse er i stand til at overføre den overvejende del af det holdemoment, som er nødvendigt for, at aggregatet 30 kan være selvlåsende i alle arbejdsstillinger af rørene 18 og 22, som i øvrigt indenfor vide rammer kan have enhver ønsket længde.It will be appreciated that the friction connection along the circumference of the articulation cups due to the relatively large frictional surface formed between the edge flange 36 and recess 34 is particularly important as this friction connection is capable of transmitting the majority of the the holding torque necessary for the assembly 30 to be self-locking in all working positions of the pipes 18 and 22, which, moreover, within wide frames, can be of any desired length.

Det aktive gennemstrømningstværsnit ved aggregatet ifølge opfindelsen vil som nærvnt altid være konstant uanset 6 143538 den indbyrdes vinkelstilling af rørene 18 og 22. Da yderligere rørene 18 og 22 udgør selve støttearmene, vil det være yderst let at ændre aggregatets rækkevidde, idet dette blot kræver en ændring af længden af et af eller 5 begge rørene 18 og 22. Fortrinsvis er rørene 18 og 22 såkaldte Spiro-rør, dvs. lette rør, som løbende sammen-falses på en sådan måde, at der kan afskæres vilkårlige rørlængder, uden at der kræves særlige låseforanstaltninger ved rørenderne.As mentioned above, the active flow cross-section of the assembly according to the invention will always be constant regardless of the angular position of the pipes 18 and 22. Since further the pipes 18 and 22 constitute the supporting arms themselves, it will be extremely easy to change the range of the assembly as changing the length of one or both of the tubes 18 and 22. Preferably, the tubes 18 and 22 are so-called Spiro tubes, ie. lightweight pipes which are continuously collapsed in such a way that any length of pipe can be cut without requiring special locking measures at the pipe ends.

10 Aggregatet ifølge opfindelsen kan eksempelvis have en rækkevidde på 2,2 meter, hvilket svarer til, at rørene 18 og 22 hver er 1 meter lange, og at aggregatet vejer syv kilogram, medens et tilsvarende kendt aggregat med bærearmsystemet anbragt indeni sugeslangen vejer ca. fjor-15 ten kilogram.For example, the assembly of the invention may have a range of 2.2 meters, which corresponds to pipes 18 and 22 each being 1 meter long, and that the assembly weighs seven kilograms, while a corresponding known assembly with the support arm system placed inside the suction hose weighs approx. fourteen kilograms.

Sugehovedet 24 kan være forbundet til røret 22 på anden måde end den viste, idet det særlige knækrør 26 eksempelvis kan erstattes af et særligt kuglerørled, som desuden kan være udformet med en aflang ventilslidse, som 20 ved drejning af sugehovedet kan afspærres mere eller mindre, dvs. virke som indstillingsventil for sugeluften i stedet for det sædvanlige drejespjæld i sugehovedet.The suction head 24 may be connected to the tube 22 in a different manner than the one shown, the particular knuckle tube 26 being replaced, for example, by a special ball pipe, which may also be formed with an elongated valve slot, which 20 can be more or less blocked by turning the suction head. i.e. act as an adjustment valve for the suction air instead of the usual rotary damper in the suction head.

DK296575AA 1975-07-01 1975-07-01 ADJUSTABLE AGGREGATE FOR EXTRACTION OF GAS AND STEAMS ISAER WELDING DK143538B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DK296575AA DK143538B (en) 1975-07-01 1975-07-01 ADJUSTABLE AGGREGATE FOR EXTRACTION OF GAS AND STEAMS ISAER WELDING
SE7607384A SE7607384L (en) 1975-07-01 1976-06-29 ADJUSTABLE DEVICE FOR EXHAUSTING GASES AND ENGINE, SPECIAL WELDING SMOKE
DE19762629689 DE2629689A1 (en) 1975-07-01 1976-06-29 Suction device for welding plants - to remove steam from varying operating locations with joined flexible connections

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK296575AA DK143538B (en) 1975-07-01 1975-07-01 ADJUSTABLE AGGREGATE FOR EXTRACTION OF GAS AND STEAMS ISAER WELDING
DK296575 1975-07-01

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DK296575A DK296575A (en) 1977-01-02
DK143538B true DK143538B (en) 1981-09-07

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DK (1) DK143538B (en)
SE (1) SE7607384L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988009227A1 (en) * 1987-05-22 1988-12-01 Stefan Jacek Moszkowski Exhaust hood
CN105598119A (en) * 2015-12-23 2016-05-25 天津艾力特斯科技有限公司 Movable laboratory exhaust blower

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8304343L (en) * 1983-08-10 1985-02-11 Anesteco Hab DEVICE FOR SUCTION SYSTEMS
IT1186845B (en) * 1985-03-15 1987-12-16 Aspirgas Srl PLANT FOR THE EXTRACTION OF GAS FROM CLOSED ENVIRONMENTS SUCH AS GARAGES AND GARAGES
US5636627A (en) * 1991-04-12 1997-06-10 N.J. Rochester Limited Equipment and method for gas extraction in general anaesthesia
WO1996027452A1 (en) * 1995-03-03 1996-09-12 Alsident System A/S An exhaust line
SE529141C2 (en) * 2005-08-04 2007-05-15 Fumex Ab Lockable friction joint and use of such joint
LU91416B1 (en) * 2008-02-13 2009-08-14 Nce Sa Cryogenic fluid feed assembly
CN103537827A (en) * 2012-07-17 2014-01-29 上海申江压力容器有限公司 Automatic separating and discharging system of small welding fume particles
CN104923539B (en) * 2015-05-29 2017-09-26 安徽育安实验室装备有限公司 A kind of intelligent universal extract system in laboratory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988009227A1 (en) * 1987-05-22 1988-12-01 Stefan Jacek Moszkowski Exhaust hood
CN105598119A (en) * 2015-12-23 2016-05-25 天津艾力特斯科技有限公司 Movable laboratory exhaust blower

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SE7607384L (en) 1977-01-02
DE2629689A1 (en) 1977-01-20
DK296575A (en) 1977-01-02

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