DK149711B - Booth with means for the extraction of polluted air - Google Patents
Booth with means for the extraction of polluted air Download PDFInfo
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- DK149711B DK149711B DK500479AA DK500479A DK149711B DK 149711 B DK149711 B DK 149711B DK 500479A A DK500479A A DK 500479AA DK 500479 A DK500479 A DK 500479A DK 149711 B DK149711 B DK 149711B
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- cabin
- air
- zone
- opening
- flow
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- 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
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- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Cleaning In General (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Description
149711149711
Den foreliggende opfindelse angår en kabine med midler til udsugning af forurenet luft, som opstår ved behandling af genstande i en indre zone af kabinen, hvor ventilationsluft bringes til at strømme fra kabinens omgivelser og ind gennem en i kabinens brugsstil-5 ling i hovedsagen lodret åbning i kabinens forvæg, hvorefter den forurenede luft udsuges gennem i det mindste én udsugningskanal fra en behandlingszone, som er begrænset af kabinens indre vægge, loft og bund, og hvor en styreplade strækker sig fra åbningens kant og indad mod bagvæggen. Den nævnte behandling af genstande er 10 f.eks. overfladebehandling, såsom sprøjtemaling, slibning, vaskning og limning med stoffer, som indeholder farlige opløsningsmidler.The present invention relates to a cabin with means for extracting contaminated air which arises from the treatment of objects in an interior zone of the cabin, where ventilation air is caused to flow from the surroundings of the cabin and into a substantially vertical opening in the cabin's operating position. in the front wall of the cabin, after which the contaminated air is extracted through at least one exhaust duct from a treatment zone which is limited by the interior walls, ceiling and bottom of the cabin, and wherein a guide plate extends from the edge of the opening and inwards towards the rear wall. Said treatment of objects is 10 e.g. coating, such as spray painting, grinding, washing and bonding with substances containing dangerous solvents.
Sådanne kabiner af denne art er velkendte og anvendes bl.a. i forbindelse med slibning eller sprøjtemaling og overfladebehandling af små genstande. Disse kendte udsugningskabiner er imidlertid 15 store og kræver store luftmængder, hvis man skal opnå akceptabelt begrænsede koncentrationer af luftforureninger og forhindre forurenet luft i at spredes i området udenfor kabinen. Da disse kendte udsugningskabiner er dimensioneret for store luftmængder, bliver energiforbruget højt, og følgelig vil udstyret være temmelig kostbart i drift.Such booths of this kind are well known and are used, inter alia, in connection with grinding or spray painting and surface treatment of small objects. However, these known suction booths are 15 large and require large amounts of air if acceptable concentrations of air pollution are to be obtained and prevented contaminated air from spreading in the area outside the cabin. Since these known suction booths are designed for large quantities of air, the energy consumption becomes high, and consequently the equipment will be quite expensive to operate.
20 En anden ulempe ved hidtil kendt udstyr er f.eks., at sprøjtemaling af små overflader på køretøjer skal udføres i relativt store anlæg, hvor hele køretøjet bringes ind i et rum eller kammer, hvor luft tilføres gennem ventilationsåbninger i loftet og udsuges gennem et gitter i gulvet. Maleren skal følgelig forblive i kammeret for at udføre 25 arbejdet, og hvis det skulle udføres uden beskyttelsesmaske, skulle luftstrømmen være af størrelsesordenen 100.000 m /time. Et sådant anlæg er naturligvis overordentligt kostbart at installere, og driftsomkostningerne er ligeledes høje på grund af den store luftstrøm under drift og det dermed sammenhængende energiforbrug.Another disadvantage of previously known equipment is, for example, that spray painting of small surfaces of vehicles must be carried out in relatively large plants, where the whole vehicle is brought into a room or chamber where air is supplied through ventilation openings in the ceiling and extracted through a lattice in the floor. Accordingly, the painter must remain in the chamber to perform the work, and if it were to be performed without a protective mask, the air flow should be of the order of 100,000 m / h. Such a plant is, of course, extremely expensive to install and the operating costs are also high due to the large airflow during operation and the associated energy consumption.
30 Endvidere er der ved kabiner af den konventionelle udførelse en tendens til, at forurenet luft kan undslippe fremad fra kabinen.Moreover, in the cabins of the conventional embodiment, there is a tendency for polluted air to escape from the cabin.
Når en kabine af denne type anvendes til sprøjtemaling, bliver malingspartiklerne fremdrevet med en betydelig hastighed ind i kabinen og medtages i luftstrømmen, som suges bagud i kabinen gennem en 35 lodret frontåbning. Der er imidlertid en tilbøjeligehed hos en del af malingspartiklerne til at bevæge sig langs indersiden af kabinens vægge hen mod åbningen og i nogle tilfælde fremad ud af kabinen. Denne strøm af forurenet luft udad fra kabinen er vanskelig at forhindre i sædvanlige sprøjtemalingskabiner, og der er foretaget forskellige for- 149711 2 anstaltninger for at afhjælpe denne ulempe, f.eks. ved som nævnt at forøge luftstrømmen gennem kabinen. Det har imidlertid stadig vist sig, at forurenet luft har tilbøjelighed til at strømme ud fra kabinen, f.eks. når en betjeningsperson, som står foran kabinen, frembringer 5 en turbulent zone i nærheden af betjeningspersonens krop ud for kabinen. Der er fare for, at denne forureningsgrad forårsaget af betjeningspersonens tilstedeværelse overstiger de begrænsende sikkerhedsværdier for den pågældende maling eller andre forureninger. Dette er naturligvis særlig alvorligt i et turbulent område omkring betje-10 ningspersonens ansigt.When a cabin of this type is used for spray paint, the paint particles are propelled at a considerable speed into the cabin and are included in the air flow which is sucked back into the cabin through a vertical front opening. However, there is a tendency for some of the paint particles to move along the inside of the cabin walls toward the opening and in some cases forward out of the cabin. This flow of polluted air outward from the cabin is difficult to prevent in conventional spray paint booths, and various measures have been taken to remedy this disadvantage, e.g. as mentioned, by increasing the air flow through the cabin. However, it has still been found that polluted air tends to flow out of the cabin, e.g. when an operator standing in front of the cabin produces a turbulent zone near the operator's body next to the cabin. There is a danger that this degree of contamination caused by the presence of the operator exceeds the limiting safety values of the paint or other contaminants. This is of course particularly severe in a turbulent area around the operator's face.
Formålet med den foreliggende opfindelse er at tilvejebringe en kabine af den indledningsvis angivne art, f.eks. til sprøjtemaling, med betydeligt mindre dimensioner end de ovenfor nævnte, og som forhindrer, at forurenet luft strømmer ud fra behandlingszonen og 15 ud gennem åbningen i kabinens forvæg. Ifølge opfindelsen opnås dette ved, at styrepladen er anbragt rundt om åbningen langs hele dens kant for at danne en del af en styreflade, som strækker sig ind i kabinen og sammen med kabinens forvæg er bestemt til at ændre retningen af og opfange i det mindste en del af den forurenede luft, 20 som ikke umiddelbart suges bort gennem udsugningskanalen, hvilken del af den forurenede luft strømmer langs de indre begrænsningsflader fra behandlingszonen og mod åbningen i kabinens forvæg.The object of the present invention is to provide a cabin of the type specified in the preamble, e.g. for spray paint, with considerably smaller dimensions than those mentioned above, which prevents contaminated air from flowing out of the treatment zone and out through the opening in the front of the cabin. According to the invention this is achieved by the guide plate being arranged around the opening along its entire edge to form part of a guide surface which extends into the cabin and together with the front of the cabin is intended to change the direction of and intercept at least one a portion of the contaminated air 20 which is not immediately sucked away through the suction duct, which portion of the contaminated air flows along the inner limiting surfaces from the treatment zone and toward the opening in the front of the cabin.
Ved hjælp af dette styrepladearrangement tilvejebringes der således en luftzone omkring åbningen, som vender bagud og dermed 25 står i forbindelse med det indre af kabinen. Tilstedeværelsen af denne omgivende luftzone formindsker den ovennævnte alvorlige ulempe ved de kendte konstruktioner, således at den forurenede luft ikke har tilbøjelighed til at strømme ud af boksen omkring kanterne af frontåbningen.Thus, by means of this control plate arrangement, an air zone is provided around the opening, which faces backwards and thus 25 communicates with the interior of the cabin. The presence of this ambient air zone mitigates the aforementioned serious disadvantage of the known designs, so that the polluted air does not tend to flow out of the box around the edges of the front opening.
30 Ved en udførelsesform ifølge opfindelsen strækker styrepladen sig også fra kabinens forvæg og udad for at danne et tragtlignende luftindløb, som tillader luft at strømme rundt om den forreste åbnings kant fra kabinens omgivelser til behandlingszonen i det væsentlige turbulensfrit.In one embodiment of the invention, the control plate also extends from the front of the cabin to the outside to form a funnel-like air inlet which allows air to flow around the front opening edge from the surroundings of the cabin to the treatment zone substantially turbulence-free.
35 Udformningen af kabinen ifølge opfindelsen tilvejebringer en væ sentlig reduktion af kabinens dimensioner uden at forårsage nogen forurening af den omgivende luft. Endvidere kan overfladebehandling, såsom sprøjtemaling af begrænsede flader på store genstande, f.eks. køretøjer, også udføres ved hjælp af kabinen ifølge opfindelsen og ud 149711 3 føres af en person, som befinder sig udenfor kabinen, hvilket betydeligt reducerer risikoen for skadelige påvirkninger fra opløsningsmidler.The design of the cabin according to the invention provides a substantial reduction in the dimensions of the cabin without causing any pollution of the ambient air. Furthermore, surface treatment, such as spray painting of restricted surfaces on large objects, e.g. vehicles, also carried out by means of the cabin of the invention and carried out by a person located outside the cabin, which significantly reduces the risk of harmful effects from solvents.
Oet sidstnævnte opnås i det væsentlige ved, at bagvæggen iføl-5 ge opfindelsen i det mindste delvis består af to med kabinens sidevægge svingeligt forbundne skærmplader, der sammen med en overflade på genstanden er indrettet til at kunne danne kabinens bagvæg.The latter is achieved essentially by the fact that the rear wall according to the invention consists at least in part of two screen plates pivotally connected to the cabin walls, which together with a surface of the object is arranged to form the rear wall of the cabin.
Opfindelsen skal herefter forklares nærmere under henvisning til tegningen, hvor 10 fig. 1 viser, et sidebillede delvis i snit af en kabine ifølge op findelsen til sprøjtemaling af siden af en bus, fig. 2 et billede forfra af kabinen i fig. 1 og fig. 3 et billede i plan af kabinen i fig. 1 indrettet til sprøj temaling af hjørnet af en bus.The invention will now be explained in more detail with reference to the drawing, in which: FIG. 1 is a partial side elevational view of a cab according to the invention for spray painting the side of a bus; FIG. 2 is a front view of the cabin of FIG. 1 and FIG. 3 is a plan view of the cabin of FIG. 1 arranged to spray paint the corner of a bus.
15 Kabinen i fig. 1 omfatter en forvæg 1 og en bagvæg 2, sidevæg ge 3 og 4, en overvæg 5 og en undervæg 6. Kabinen er placeret imod siden af en bus, som således danner en del af kabinens bagvæg 2. Sidevæggene 3 og 4 er udformet som to udsugningskanaler, der er forbundet opadtil til udsugningskanaler 7 og 8 til udsugning af luft fra 20 en behandlingszone 9, der i hovedsagen dannes af kabinens vægge.15 The cabin of FIG. 1, a front wall 1 and a rear wall 2, side walls 3 and 4, a wall 5 and a lower wall 6. The cabin is positioned against the side of a bus, which thus forms part of the rear wall of the cabin 2. The side walls 3 and 4 are designed as two suction ducts connected upwardly to suction ducts 7 and 8 for suction of air from a treatment zone 9 formed essentially by the walls of the cabin.
Forvæggen 1 er forsynet med en åbning, som tillader adgang til zonen 9 og også tillader luft at strømme udefra gennem filtre 10 og 11 ind i udsugningskanalerne 3 og 4, som fører luftstrømmen til udsugningskanalerne 7 og 8. Et luftindtag 12,14 er anbragt langs de fire 25 kanter 13 af åbningen i forvæggen 1, og delen 12 af indtaget strækker sig fra forvæggen 1 i retning mod bagvæggen 2 for at danne et indre styreorgan, som er indrettet til at ændre retningen af og afspærre, således at den er i turbulent bevægelse, en del af den forurenede luft, som ikke straks bortsuges gennem kanalerne 3,4. Den an-30 den del 14 af luftindtaget strækker sig udad fra forvæggen 1 for at danne et tragtformet organ, som tilskynder luften at strømme forbi indtaget udefra omkring hjørnerne af åbningen til zonen 9, så at denne luft er i det væsentlige fri for turbulens. Luftindtaget 12,14 har således en dobbelt funktion, nemlig at tilvejebringe en turbulensfri 35 lufttilgang til zonen 9, og at danne en turbulenszone 15, der er begrænset af de respektive dele af side- og forvæggene og den nævnte del 12, hvori luften, som ellers ville undslippe fra kabinen, afspær-res og holdes i turbulent bevægelse, indtil den suges bort gennem udsugningskanalerne.The front wall 1 is provided with an opening which allows access to zone 9 and also allows air to flow from the outside through filters 10 and 11 into the suction ducts 3 and 4 which direct the air flow to the suction ducts 7 and 8. An air intake 12,14 is arranged along the four 25 edges 13 of the opening in the front wall 1, and the portion 12 of the inlet extends from the front wall 1 towards the rear wall 2 to form an internal control means adapted to change the direction of and shut off so that it is turbulent. movement, a part of the polluted air which is not immediately absorbed through ducts 3,4. The other portion 14 of the air intake extends outwardly from the front wall 1 to form a funnel-shaped member which encourages the air to flow past the intake from outside the corners of the opening to zone 9 so that this air is substantially free of turbulence. Thus, the air inlet 12,14 has a dual function, namely, to provide a turbulence-free air access to zone 9, and to form a turbulence zone 15 limited by the respective portions of the side and front walls and said portion 12, wherein the air otherwise, it would escape from the cabin, be blocked and kept in turbulent motion until it is sucked away through the exhaust ducts.
4 1497114 149711
Der er mange grunde til, at forurenet luft undslipper i en kabine af sædvanlig form. Eksempelvis ved sprøjtemaling af genstande slynges farvepartikierne ved relativt stor hastighed ind i kabinen, hvor en del af dem afbøjes til siderne i hovedsagen på grund af virk-5 ningen af luftstrømmen. Da partiklerne har stor hastighed, vil nogle af dem blive ført med i luftstrømmen i kabinen, hvoraf en del vil bevæge sig langs indersiden af væggene hen mod åbningen og tilbage til luften udenfor kabinen. Denne spredning af forurenet luft fra kabinen og ud i omradet omkring denne er vanskelig at forhindre 10 i sædvanlige sprøjtemalekabiner, og mange foranstaltninger er blevet taget for at afhjælpe denne ulempe, f.eks. ved at forøge luftstrømmen gennem kabinen. Tilbagestrømningen af forurenet luft fra kabinen til den omgivende luft sker også, når partiklerne eller forureningerne ikke har nogen begyndelseshastighed i det hele taget, f.eks.There are many reasons why polluted air escapes in a cabin of the usual form. For example, by spray painting objects, the color particles are thrown into the cabin at a relatively large speed, with some of them deflected to the sides substantially due to the action of the air flow. Since the particles are at high velocity, some of them will be carried into the airflow in the cabin, some of which will move along the inside of the walls towards the opening and back to the air outside the cabin. This spread of contaminated air from the cabin into the surrounding area is difficult to prevent in conventional spray paint booths, and many measures have been taken to remedy this disadvantage, e.g. by increasing the air flow through the cabin. The backflow of polluted air from the cabin to the ambient air also occurs when the particles or contaminants have no initial velocity at all, e.g.
15 når genstande behandles med stærke og farlige opløsningsmidler. En person, som befinder sig foran kabinen og arbejder med genstande inden i kabinen, vil frembringe en turbulent zone i nærheden af den del af kroppen, som er vendt mod kabinen. Dette er naturligvis et resultat af, at personen danner en hindring for luften, som strømmer 20 fra rummet omkring kabinen og ind i den. I de turbulente zoner, som skabes af personens kropsdele, er trykket lavere end i de omgivende zoner med uhindret luftstrømning, og dette medfører, at den forurenede luft, som ikke umiddelbart udsuges gennem sidekanalerne, strømmer tilbage mod de turbulente lavtrykszoner bag personens krop.15 when treating objects with strong and dangerous solvents. A person who is in front of the cabin and works with objects inside the cabin will create a turbulent zone near the part of the body facing the cabin. Of course, this is a result of the person obstructing the air flowing 20 from the space around the cabin and into it. In the turbulent zones created by the person's body parts, the pressure is lower than in the surrounding zones with unobstructed air flow, and this causes the polluted air, which is not immediately sucked out through the side ducts, to flow back towards the turbulent low pressure zones behind the person's body.
25 Denne retur strømning af forurenet luft vil forårsage en koncen tration af forureninger i disse turbulente zoner umiddelbart bag personens krop og følgelig også umiddelbart bag ansigtet, hvilket er blevet klart påvist i for nylig offentliggjort forskningsarbejde. Det har også vist sig ved anvendelsen af sædvanlige kabiner, som iøvrigt gi-30 ver en lav koncentration af luftforureninger i det omgivende rum omkring kabinen, at graden af forurening i de turbulente zoner umiddelbart bag kroppen af en person, som står foran kabinen, betydeligt vil overstige de tilladte sikkerhedsværdier for de pågældende forureninger. Dette er naturligvis særligt alvorligt i et turbulent område 35 umiddelbart omkring ansigtet på en sådan person. Ved hjælp af arrangementet med luftindtaget 12,14 ifølge opfindelsen vil den forurenede luft, som har tendens til at strømme tilbage ind i luftrummet omkring kabinen, blive bibragt en ny retning og afspærret i turbulent bevægelse i en hvirvelzone 15 begrænset af den indre overflade af 149711 5 luftindtaget 12 og indersiden af forvæggen 1, Da luft kontinuerligt suges bort fra kabinen, vil forureningerne i disse iufthvirvler bortføres fra disses omkredse, nir de bevæges hen mod udsugningskanalerne af centrifugalkraften. Hvirvelzonerne 15 skabes ikke kun ved 5 siderne, men ligeledes ved den nederste og øverste væg af kabinen, og luften i disse hvirvelzoner suges bort til sidekanalerne 3,4, som er forbundet med udsugningskanalerne 7,8.25 This return of polluted air will cause a concentration of contaminants in these turbulent zones immediately behind the person's body and, consequently, also directly behind the face, as has been clearly demonstrated in recently published research work. It has also been found by the use of conventional cabins which otherwise give a low concentration of air pollution in the surrounding space around the cabin that the degree of pollution in the turbulent zones immediately behind the body of a person standing in front of the cabin is significantly will exceed the permitted safety values for the contaminants concerned. This is of course particularly severe in a turbulent area 35 immediately around the face of such a person. By means of the arrangement with the air intake 12,14 according to the invention, the polluted air, which tends to flow back into the air space around the cabin, is imparted in a new direction and blocked in turbulent motion in a vortex zone 15 limited by the inner surface of 149711. 5 Air intake 12 and the inside of the front wall 1 As air is continuously sucked away from the cabin, the contaminants in these air vortices will be removed from their perimeter as they move towards the suction channels of the centrifugal force. The vortex zones 15 are created not only at the 5 sides but also at the lower and upper walls of the cabin, and the air in these vortex zones is sucked away to the side ducts 3,4 which are connected to the suction ducts 7,8.
Kabinen vist i fig. 1 er understøttet i et stativ 16, som er bevægeligt på hjul 17 og let kan anbringes tæt ved en genstand, f.eks.The cabin shown in FIG. 1 is supported in a frame 16 which is movable on wheels 17 and can easily be placed close to an object, e.g.
10 siden af en bus, som skal sprøjtes. Kabinen kan naturligvis være stationær og forsynet med en stiv bagvæg, når den er bestemt til anvendelse i forbindelse med behandlingen af mindre genstande, som angivet ovenfor.10 side of a bus to be sprayed. The cabin may, of course, be stationary and provided with a rigid rear wall when intended for use in the treatment of smaller objects, as indicated above.
Udførelsesformen vist i fig. 3 er forsynet med to skærmplader 15 18 og 19, som er svingeligt forbundet med kabinens sidevægge 3 og 4 og kan manøvreres således, at de sammen med genstanden 20, der skal behandles, danner bagvæggen i kabinen. Når disse plader fungerer som bagvæg, er de også forsynet med et "loft" og et "gulv" for at afgrænse behandlingszonen fra omgivelserne. I udførelsesfor-20 men vist i denne figur er genstanden 10 et hjørne af en bus, som i henhold til opfindelsens princip kan sprøjtemales, uden at malings-partikler eller opløsningsmiddel kommer ud i den omgivende luft, hvilket betyder, at arbejdet kan udføres af en person, som ikke behøver at bære en beskyttelsesmaske. Skærmpladerne 18 og 19 vist i figuren 25 kan være hængslet ved 21 for at danne et antal sektioner, så at de let kan tilpasses til afstanden til genstanden, der skal behandles. De kan også foldes ud for fuldstændigt at lukke bagsiden af kabinen, så at den kan anvendes ved behandlingen af andre genstande, som da kan placeres i dens behandlingszone.The embodiment shown in FIG. 3 is provided with two shield plates 15 18 and 19 which are pivotally connected to the sidewalls 3 and 4 of the cabin and can be operated so that together with the object 20 to be treated they form the back wall of the cabin. When these panels act as a back wall, they are also provided with a "ceiling" and a "floor" to define the treatment zone from the surroundings. In the embodiment 20 shown in this figure, the object 10 is a corner of a bus which, according to the principle of the invention, can be sprayed without painting particles or solvent entering the ambient air, which means that the work can be carried out by a person who does not need to wear a protective mask. The shield plates 18 and 19 shown in FIG. 25 may be hinged at 21 to form a plurality of sections so that they can be readily adapted to the distance to the article to be treated. They can also be folded out to completely close the back of the cabin so that it can be used in the treatment of other objects, which can then be placed in its treatment zone.
30 Ifølge en yderligere udførelsesform for opfindelsen kan kabinen være anbragt stationært, f.eks. til overfladebehandling af gods, som ved hjælp af en transportør bringes ind i kabinens behandlingszone, hvor det f.eks. sprøjtemales, og derefter føres ud for tørring og efterbehandling.According to a further embodiment of the invention, the cabin may be stationary, e.g. for surface treatment of goods which is brought into the treatment zone of the cabin by means of a conveyor, where it is e.g. spray-painted, and then subjected to drying and finishing.
35 Kabinen ifølge opfindelsen kan om ønsket forsynes med udsug ningskanaler langs den øverste og/eller nederste væg, som i dette tilfælde skal udformes som udsugningskanaler.The cabin according to the invention may, if desired, be provided with suction ducts along the upper and / or lower wall, which in this case should be designed as suction ducts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7812139A SE7812139L (en) | 1978-11-24 | 1978-11-24 | UTSUGNINGSBOX |
| SE7812139 | 1978-11-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK500479A DK500479A (en) | 1980-05-25 |
| DK149711B true DK149711B (en) | 1986-09-15 |
| DK149711C DK149711C (en) | 1987-04-06 |
Family
ID=20336450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK500479A DK149711C (en) | 1978-11-24 | 1979-11-23 | Cabin with means for extraction of polluted air |
Country Status (7)
| Country | Link |
|---|---|
| DE (1) | DE2947334A1 (en) |
| DK (1) | DK149711C (en) |
| FI (1) | FI793693A (en) |
| FR (1) | FR2442084A1 (en) |
| GB (1) | GB2049164B (en) |
| NO (1) | NO793782L (en) |
| SE (1) | SE7812139L (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3123571A1 (en) * | 1981-06-13 | 1982-12-30 | Martin 7312 Kirchheim Hanke | MOBILE EXTRACTION UNIT IN A RECIRCULATED PROCESS |
| EP0224034A1 (en) * | 1985-10-29 | 1987-06-03 | Präzisions-Werkzeuge AG | Method and arrangement for preventing floating particles from descending, and a heat treatment station in a continuous inner liner installation |
| EP1858653A1 (en) * | 2005-02-08 | 2007-11-28 | Junair Group Limited | Localised extraction syste |
| CA2753531C (en) * | 2009-02-24 | 2017-09-12 | Michael Giarrizzo, Jr. | Vehicle collision repair booth |
| KR20180064605A (en) * | 2016-12-05 | 2018-06-15 | 삼성디스플레이 주식회사 | Laser processing work table and operation method of the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1205437A (en) * | 1967-08-25 | 1970-09-16 | Nat Res Dev | Improvements relating to fume cupboards |
| US3821924A (en) * | 1973-01-15 | 1974-07-02 | Doane Mfg Co | Damper mechanism for kitchen ventilating systems |
| US3943836A (en) * | 1974-08-15 | 1976-03-16 | Vent-Cair, Inc. | Apparatus for removing fumes from the space above a cooking appliance in a restaurant |
| US3941039A (en) * | 1974-11-18 | 1976-03-02 | Air Distribution Associates, Inc. | Cooking fume removal |
-
1978
- 1978-11-24 SE SE7812139A patent/SE7812139L/en unknown
-
1979
- 1979-11-21 GB GB7940292A patent/GB2049164B/en not_active Expired
- 1979-11-22 NO NO793782A patent/NO793782L/en unknown
- 1979-11-23 FI FI793693A patent/FI793693A/en not_active Application Discontinuation
- 1979-11-23 FR FR7928986A patent/FR2442084A1/en active Granted
- 1979-11-23 DE DE19792947334 patent/DE2947334A1/en not_active Withdrawn
- 1979-11-23 DK DK500479A patent/DK149711C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI793693A (en) | 1980-05-25 |
| GB2049164B (en) | 1983-09-28 |
| FR2442084A1 (en) | 1980-06-20 |
| DK149711C (en) | 1987-04-06 |
| DE2947334A1 (en) | 1980-06-04 |
| NO793782L (en) | 1980-05-28 |
| SE7812139L (en) | 1980-05-25 |
| DK500479A (en) | 1980-05-25 |
| FR2442084B1 (en) | 1983-12-30 |
| GB2049164A (en) | 1980-12-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |