Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Manipulation of liquid
Patent
1999-01-27
2000-08-01
Coe, Philip R.
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Manipulation of liquid
34 58, 34236, 34322, 34328, 34361, 34380, 68210, D06F 3900, F26B 2500
Patent
active
060947632
DESCRIPTION:
BRIEF SUMMARY
When items of laundry of the most varied type are being washed or cleaned, the washing dentro de la zona 34 or cleaning process is generally followed by a further number of treatment cycles, such as, for example, spin-drying, drying, ironing, stacking and the like. This also applies to items of laundry which after being washed are pressed dry in a drying press, for which purpose the very compact bundle of laundry first has to be separated before the items of laundry can be treated further.
Items of laundry are understood here as being all types of textile and nontextile articles which are washed, cleaned, spun dry, dried and otherwise further treated, such as, for example, underwear, shirts, trousers, dresses, overalls, aprons, bed linen, but also cloths, mops, rubber gloves, loose plastic covers and the like.
In each of the abovementioned treatment stations the items of laundry have to be removed from the machine after the treatment process concerned is finished, i.e. the machine has to be unloaded so that the items of laundry can be transported to the next treatment station. For this purpose, the items of laundry are generally removed by hand from the treatment machine concerned and placed into a transporting container or placed onto a transporting device and transported thereby to the next treatment station. This is relatively laborious and time-consuming and requires expensive transporting means and transporting devices which, moreover, are susceptible to mishaps and wear and require a correspondingly high outlay on maintenance. When soft items of laundry, for example cotton underwear, are being processed, a further additional disadvantage frequently occurs during the spin-drying in that, at high spin-drying speeds, parts of the items of laundry resting directly against the perforated peripheral wall of the operating drum are pressed into the nozzle-shaped perforations and sometimes even emerge outside the latter and relax again, i.e. swell up somewhat, outside the perforation. The unloading of such items of laundry requires an additional, comparatively great effort to be exerted by the attendant and considerably increases the time required. These circumstances impede automatic transfer from the spin-drying machine to the next treatment machine.
An attempt has already been made to automate the removal of the items of laundry from the spin-drying machine by only operating the spin-drying drum at a relatively low spin-drying speed so that the items of laundry do not adhere so strongly to the drum wall. To unload the spin-drying drum, the spin-drying machine is tilted toward the end-side unloading opening and the spin-drying drum is either continuously rotated in one direction or rotated to and fro in both directions, specifically at a relatively low speed, in order to detach the items of laundry so that they can then fall out through the downwardly inclined unloading opening. However, this requires a very high outlay on the construction for the spin-drying machine and the pivoting mechanism. The connecting lines all have to be of flexible design. The space required for a spin-drying machine of this type is greater than in the case of a fixed spin-drying machine.
When items of laundry are cleaned, i.e. when the items of laundry are "washed" in a cleaning fluid, which in the following text is called the detergent, the items of laundry are treated in a cleaning machine which is of similar design to a washing machine or a washer-dryer, i.e. in which the drum housing can be closed in a liquidtight manner for the cleaning operation. After the cleaning process is finished, the detergent is removed. However, the items of laundry are still soaked with a considerable amount of the detergent. Since this detergent and its vapors are damaging to health, the detergent has first to be completely removed from the items of laundry before the cleaning machine may be opened and the items of laundry can be removed and supplied to other stations for further treatment. In general, some of the detergent remaining is removed by
REFERENCES:
patent: 4285219 (1981-08-01), Grunewald
patent: 5060399 (1991-10-01), Engel
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