SE435546B

SE435546B - DEVICE FOR COOLING OR DRYING GOODS

Info

Publication number: SE435546B
Application number: SE8000425A
Authority: SE
Inventors: B Larsson
Original assignee: Flaekt Ab
Priority date: 1980-01-18
Filing date: 1980-01-18
Publication date: 1984-10-01
Also published as: SE8000425L

Abstract

An apparatus for cooling or drying objects in an air stream, consisting of devices (4), which are designed to form openings for incoming and outgoing air and to direct the air stream between the inlets and outlets (10, 14). Each device consists of a cover, whose internal surfaces are designed to conform to the object's (3) external surfaces in such way that these surfaces together form passages (15) for at least part of the air stream, which is thereby made to flow over the object on its way from the inlets to the outlets.<IMAGE>

Description

3000425-'2 I Några som exempel valda utföringsformer av anordningen enligt upp- finningen beskrivs närmare nedan med hänvisning till bifogade ritningar, på vilka f _ I fig. 1 visar ett tvärsnitt genom en anordning för kylning av en gjut- skänk medelst en kåpa, som befinner sig i overksamt läge, medan I fig. 2 visar samma anordning som fig. 1 med kåpan i .verksamt läge. Some exemplary embodiments of the device according to the invention are described in more detail below with reference to the accompanying drawings, in which Fig. 1 shows a cross section through a device for cooling a ladle by means of a cover, which is in the inactive position, while in Fig. 2 shows the same device as Fig. 1 with the cover in the inactive position.

Den på fig. 1 och 2 visade anordningen är avsedd att kyla exempelvis gjutlådor eller gjutskänkar som är infodrade med keramiskt material. Enligt 'uppfinningen innefattar anordningen ett ramverk 1 som är förskjutbart på I hjul 2 och således kan förflyttas i läge över en gjutskänk 3 när denna skall kylas. I ramverket 1 är en kåpa 4 anordnad höj- och sänkbar med hjälp av en telferutrustning 5, vars vajrar 6 är fästade I kåpan Ä och löper över brytskivor 7. Kåpan löper i gejdskenor 8 på båda sidor om ramverket 1. Kå- pans mittparti 9 har en form som är anpassad efter skänkens 3 invändiga yta, medan dess sidostycken och överstycke är utformade för att tillsammans med gjutskänkens yttre begränsningsytor bilda kanaler för luftströmmen. Mitt- partiets9 nedåtvända delär försedd med frånluftöppningar 10 genom vilka luft sugs in i en inre kammare 11 i kåpan medelst en sugfläkt 12, som till- sammans med käpan Ä bildar en höj- och sänkbar enhet. Från avsugningsfläkten 12 leder rörliga fläkttrummor (icke visade) till en anläggning för avskilj- ning av stoft och tillvaratagande av värmen i den utsugna luften. l fläkt- kåpan är vidare dysor 13 anordnade, vilka är avsedda att tillföra vatten i finfördelad form till den luftström som bestryker gjutskänken.The device shown in Figs. 1 and 2 is intended for cooling, for example, casting boxes or ladles which are lined with ceramic material. According to the invention, the device comprises a framework 1 which is displaceable on wheels 2 and thus can be moved in position over a ladle 3 when it is to be cooled. In the framework 1, a cover 4 is arranged to be raised and lowered by means of a hoisting equipment 5, the wires 6 of which are attached to the cover Ä and run over breaking discs 7. The cover runs in guide rails 8 on both sides of the frame 1. The middle part 9 of the cover has a shape which is adapted to the inner surface of the ladle 3, while its side pieces and top piece are designed to form channels for the air flow together with the outer limiting surfaces of the ladle. The downwardly facing part of the middle portion 9 is provided with exhaust air openings 10 through which air is sucked into an inner chamber 11 in the cover by means of a suction fan 12, which together with the cover Ä forms a height-adjustable unit. From the extraction fan 12, movable fan drums (not shown) lead to a plant for separating dust and utilizing the heat in the extracted air. In the fan cover, nozzles 13 are further arranged, which are intended to supply water in finely divided form to the air stream which coats the ladle.

Fig. 1 visar anordningen när kåpan Å är i ett övre overksamt läge medan fig.2 visar anordningen då kåpan Ä är nedsänkt över gjutskänken 3 och fläkten 12 suger luft, som inströmmar genom tílluftsöppningar eller spalter lå och därefter genom kanaler 15 som bildas mellan kåpan och gjutskänkens begräns- ningsytor. Luftströmmen tvingas på detta sätt att bestryka skänken utmed hela den yta som skall kylas och den framkallas genom det undertryck som bildas i kåpans invändiga kammare 11 till följd av fläktens 12 sugverkan.Fig. 1 shows the device when the cover Å is in an upper idle position while Fig. 2 shows the device when the cover Ä is immersed over the ladle 3 and the fan 12 sucks air, which flows in through air openings or gaps and then through ducts 15 formed between the cover and the confinement surfaces of the ladle. The air flow is forced in this way to coat the ladle along the entire surface to be cooled and it is developed by the negative pressure formed in the inner chamber 11 of the housing as a result of the suction action of the fan 12.

På fig. 2 har också antytts att vätska i finfördelad form utströmmar ur ,dysorna 13 på kåpans sidostycken.In Fig. 2 it has also been indicated that liquid in finely divided form flows out of the nozzles 13 on the side pieces of the cover.

Claims

8000425-2 Patent claims

Device for cooling and / or drying goods in an air stream, comprising a chamber and means for generating and controlling the air flow so that it coats the goods when passing between supply and exhaust air openings in the chamber, characterized therefrom, that the chamber is provided with a wall part which is movable towards and away from the goods intended for cooling and / or drying and whose surfaces facing the goods are adapted to the shape of the goods in such a way that the wall part and the goods together can form channels which allow air flow , and that at least one exhaust air opening is formed in the movable wall part.

Device according to claim 1, characterized in that the movable wall part is designed as a cover, its shape is adapted to the good interior, confinement surfaces, and that at least one exhaust air opening is formed in a part of the cover which is located substantially centrally 1 in relation to the estate.

Device according to claim 1 or 2, characterized in that the exhaust air opening formed in the wall part is in communication with a suction chamber formed inside the wall part, which is movable together with the wall part.

Device according to one of the preceding claims, characterized in that nozzles for supplying coolant or combustible gas are arranged in the path of the air flow between the supply and exhaust air openings.