DE1907808C3 - Continuous drying device for laundry items or the like - Google Patents

Description

de, L «un _S

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The invention relates to a conveyor dryer for laundry items or the like, in which the dry goods by means of a continuously moving wide-mesh belt conveyor is movable through the drying zone.

A major problem when drying dry textiles is the temperature sensitivity of the dry goods. As a result, overheating of the dry goods must be avoided under all circumstances. Therefore, only with a relatively high rrock ^
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^^ _{VQn bed linenc} . R _{oH en} towels or the like. Yordnnn _{dJ is and} where at the same time -nc long ^ ^ _going smooth

_Requiring every drying cycle

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, 5 ^is ", _He fi"_; ! ung will do this job. -i-

J ^Il " ^lJb _c £ u _flrockcn device of the input cr-

nc ^^ Uut ^^ ^ _{Kombl non der} .

wahnt.n Art _{it as} wire mesh

^ '^ is and that below this edition--

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Nunisvorgangs lies in the use of very large throughputs of the drying medium and thus correspondingly high flow velocity. To the However, narrow limits are set by the flow resistance ues TcxtilKCwcbcs.

Drum dryers heated directly with gas known (USA patent 3 290 027.3 201467). in which the dry air is the exhaust gases from the gas burner contains. Also for these known dryers are temperature and flow rate Limits.

Furthermore, throughput devices for drying

Patent specifications 573 124, 325 019, 171586. German Inscriptions I (W 943, 1 097 942 fra nzos.sche Patent documents 1076753, 568 546 1 05 (034 unu Austrian patent specification 30 209), which air nozzle, or Konvcktionsheizkorper or radiation hcizkrrper have, with the dry goods being guided to the radiators by means of conveying equipment will. It is known ^ "rc.ch.sche

are. inventive training is

D «rcJ ^ü ^ _{b through the} radiation recovery.

by d ^ e he. .g ^ _{n Luftstrah, mash} td _US en the

^ ^u "^ |", _{1Γ schneti} abgeetrcrl.net, without the need to use such> ™ ck fe _ _wind i _g ilities mus- ^{high air} 8 ^esc ^ § lifting phenomena or ^ movements of the dry material from the _{sjnd This effect occurs}

^ ^ _{ß by the} heating devices that ^ ^by _b 2 ^ _u ^ _zcitiger heating, which is not seduced, evaporated and formed

uftsirahn ^ izdusen removed from the tissue

will. _{d in the following} on the basis of the

De invention _ngsbeis piclcn closer

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In d > ^ _{rope view} through the

¹ ^ i _{device with} an upstream washing

^ ^ν0Γ _Γ ^Γ ^ _c f _schvorri rect, and ^ crausq _{tcm scale schcma} t, sch

F ^ J ⁸ _{f a} modification of the

limited in its effect, wöbe that used The temperature must be so low that cmc o Overheating of the dry food prevents wnU

Einc overheating of the dry goods let sch i, ci such drying time «« !. the m.t belt conveyors Aibciten, also by avoiding that the dry material is only exposed to heat for a very short time

to the'
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_{laundry is used}

YY. _Tei f _{of the} washing and drying eig _{ΐ (ώ.} "Toggle connection mt

^ _{h ystema rten} can be used canr ^ ren wy _{washing device is the} washing

In the "J ^reic " _promotion through laundry facilities "ncr ^ _during ^ _{g | calibration mark}

I 907 808

Achieving a water squeeze line for the product is a never-ending process with the washing device

Direction 199 provided to the washing solution to the lungsgurt 280 over a Antrieb.Avalze 281 a, a

the Ar deflection roller 281 ft, a deflection roller 283 and a -

bcitsstück to squeeze out. The items to be washed are guided by deflection roller 278 so that the items to be dried

from the conveyor via a delivery wake 5 opposite the vertical strand 276 b of the drying

130 of the water squeezing device 19G is supplied, voltage conveyor is held. This will be

with a feed dry product guided around the rollers 137, 138 between the adjacent surfaces

Conveyor 136 is used to hold the laundry onto the belts 276 and 280 while it is on

Nip roller 191 of the water squeezer transported down the vertical strand 276 ft

to give up. Another nip roller 192 is working io. Guide rollers 279 α and 279 ft are

together with the squeegee roller 191 to wrap the opposite sides of the vertical strand 276 b

to squeeze the liquid out of the laundry. arranged so that the conveyor belts 276 and 280

The items to be washed are pressed against the items to be conveyed in a washing device 220, and the latter is held in its position by means of a washing conveyor device 221 when it is fed onto the club's endless belt conveyor, which is transported downwards by the vertical line 276 ft. Squeeze roller 191 works together, with the four consecutive rinsing units 276 running away from the belt 280 in the region of the deflection roller 278 c. The latter is fed for 230 a, 230 ft, 230 c and 230 d. One short horizontal delivery section 280 a flushing solution is fed in via a pipe 252, and is guided around the deflecting roller 281 b . Each SpüTeinheit with superheated steam or air 20 return track 280 ft isr ^r: m mixed the deflection roller or other gas ft through tubes 281 and out from there to the drive roller α 281st 253 is fed and then under pressure by the where it is pressed again against the belt 276, weiterge-washed items are pressed. At the exit end that is directed.

Rinsing conveyor 221 is another water. The drying conveyor belt 276 is provided in a clockwise squeezing device 260 in order to extract the rinsing by means of an endless chain (not shown) from the laundry, which is driven by the rinsing device 222 with a sprocket (not shown) and in the drying "- the drive shaft 278 ft. engaged - is done. This Ketvorrichtung 275 is transferred. The Wasseraiis- te in turn consists of a different crimping device 260, not shown, is driven from a crushing sprocket on the shaft 191 of the roller 261 and associated α pressure rollers 262,? 63rd 30 nip roller 191 is seated. In a similar way, the belt 280 with the deflection roller of the washing conveyor device 221 is driven independently in a clockwise direction by an endless chain, not shown, which is guided over rollers 228, 229 and which works together to transfer the items to be washed from a not shown sprocket of roller 281 a is engaged in the discharge end of the flushing conveyor device 221.

the squeegee roller 261 to enable. However, this is 35 in the process shown in FIG. 1 embodiment shown is gas

not the subject of the invention. from a source not shown of a number of

In the drying device 275, the we gas burner 277 is fed. The burners 277 are

sentlicht evaporates part of the flushing solution, which is formed in the elongated so that it spreads in the transverse direction

Workpiece remains after it has passed through the full width of the drying conveyor 276

Wasserausciuetschvorrichturig260 is passed, 40 and it is provided that, albeit

so that a suitable ironing Rc:; t moisture- only six burners 277 in FIG. 1 shown schematically

salary is achieved. Optionally, the drying are provided, and more burners can be provided. the

Device 275 be set so that the drying upper horizontal strand 276 α rA arranged so that

well to the extent necessary, he dries the dry goods through the flames 277 α trans-

wiid to get it ready for immediate use 45 ported. coming out of the burners. The Fcuch-

do. activity content of the dry material and the relative

As shown in FIGS. 1 and 2, includes the moderately high speed of the conveyor

Drying device 275 an endless drying 276 prevent the drying material from being burned or

conveyor 276 that is scorched from a horizontal.

upper conveyor line 276 α, which is arranged over a 5 ° Another embodiment of the Trocknungsvor-Rcihe of heat-emitting elements is in F: g. 2 shown. There is a number. The belt of the conveyor device 276, which is made of wire netting known from gas-fired infrared burners 277 ft, is of a take-up type, which is shown schematically in FIG. 2 are shown, with the belt looped around a deflection roller at a distance from one another below and across to drying 278 α , which is arranged below the 55 voltage conveyor 276, the burners squeezing roller 261 of the water squeezing device gas is supplied through gas pipes, not shown. 260 is arranged as well as a delivery area, in between each of the infrared burners 177 ft one of which the belt is wrapped around a deflection roller 278 c is arranged number of hot air nozzle tubes 285 (Fig. 1), which at the end of a vertical is arranged across the entire width of the Förderkaien strand 276 b . The upper hori- 60 device 276 extend. Each hot air nozzle tube zontate strand 276 α of the conveyor is 285 is along its tip with an elongated drive roller 278 ft down, where it is narrowed L jftauslaßdüse 285 α provided, which merges into the vertical strand 276 ft. The rear, also across the entire width of the conveyor guide strand 27t c of the conveyor servo device, extends around device 276. Heated air looped by about the deflection roller 218 d. 65 66 ° C is under pressure through pipes not shown around the dry material, while it is fed to the vertical hot air nozzle pipes 285 , and the he-strand is transported 276 ft to u /, th, safely in heated air is up through the Förclervor-position to keep to a horizontal delivery direction 276 and through the placed dry material

submitted. The arrangement of the heating devices and air delivery nozzles is shown in FIG. , 2 are shown as only shown schematically and it may also be more heaters 277 b and the air branches are provided 285 AD. The combination of heating devices and nozzle pipes is used for uninterrupted drying, the degree of drying being significantly greater than that using conventional flame drying and the like. B by the heaters 277, the moisture contained in the dry material into vapor is converted, wherein immediately from the area of tissue removed by the subsequent HciRluftströmc the Dampl before it starts to condense. In operation, the material to be dried is placed on the horizontal belt 276 of the drying conveyor, which transports it through a sequence of flames 277 α from the gas burners 277 when the drying device according to FIG. 1 is used.

Alternatively, if the drying device design according to FIG. 2 is used, the laundry is successively transported over the infrared burner 277 b and the narrow hot air streams arranged between them, which are generated by the nozzle pipes 285 and their nozzles 285 α , whereby the moisture in the dry goods is repeated

ίο evaporates and the steam is blown away. After passing through the last flame or over the last Heizvorrich'.ung the row, the dry goods between the conveyor belt 276 and the conveyor belt 280 over a short downward strand 276 /; in addition

> 5 horizontal delivery line 280 α , from which the dry material can be removed clean and dry for use or, if necessary, processed further.

1 sheet of drawings

Claims (1)

I 907 Conveyor drying device for laundry items of a continuously moving wide-meshed od the like., In which the dry material is movable by means of a belt conveyor through the drying zone characterized by a Korno nation such that the belt conveyor (276) is designed as a wire mesh fabric and ate a plurality of below the support strand. whose conveying width corresponds to infrared emitters (277 b) alternating with He.ßlutt-Bre.tstrahldüsen (285 «) at a short distance Drying effect is delayed on the basis of the discovery , dryer for one '· R wh Tr, -knun «with high speed , nu.erhcheTo.j-knun ^ ^ ^ ^ rgehcu :, ι and Ausquetschstraße anschli. · .-., in its A _can .rden preceding inen b ^ grow the drying process, without ^ hr strength extensive facilities erforden.cn