Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F73/00—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam 
  • D06F73/02—Apparatus for smoothing or removing creases from garments or other textile articles by formers, cores, stretchers, or internal frames, with the application of heat or steam  having one or more treatment chambers
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
  • D06F51/00—Apparatus for expelling or draining water from the linen, not provided for in the preceding groups

Definitions

• the invention relates to a method for finishing and / or drying laundry according to the preamble of claim 1.
• the main problem with finishing and drying laundry is a quick heat transfer and a safe penetration of the laundry with heat and moisture into the interior of the weaving and sewing threads, which are known to be a bundle of fibers.
• the invention has for its object, on the one hand, to achieve good smoothing of these laundry parts and, on the other hand, to achieve a high throughput speed while avoiding impairment of the laundry parts to be treated with low energy requirements.
• the invention is based on the knowledge that a very large amount of energy, namely the evaporation energy, which is a multiple of the specific heat of hot air, is suddenly released during the condensation of steam.
• the steam changes its state of matter and changes to the liquid phase (water).
• the moisture that is created in this way is definitely desirable, because it enables energy to be transported to the inside of the textile fiber.
• the hot air previously used for heat transport is no longer desirable in this process. It works; due to their insulating effect against the rapid heat transfer.
• the laundry is finished and dried in two phases.
• the heating phase the laundry should be heated to about 99 to 100 ° C. as quickly as possible. This is done by adding wet steam, which first condenses when it hits the cooler laundry and then, in the form of heated water and under the influence of the capillary action, penetrates the spaces between the individual fibers very quickly and intensively with both moisture and heat.
• the original residual moisture of the textile fabric and the additional moisture generated by condensation of the steam is evaporated. This is done by superheated steam, which has a high specific heat content, so that only relatively small masses have to be moved, which also has a favorable effect on the drive power.
• the moisture contained in or in the laundry is evaporated with some cooling of the superheated steam. It should be ensured that the superheated steam is not cooled down to the saturated steam range, since in such a case no moisture could be extracted from the laundry.
• the steam is advantageously circulated by means of a fan. The heat extracted from him during the evaporation of the water is then returned to him via a heat exchanger.
• the drying process starts at a predetermined residual moisture Broken.
• This residual moisture is namely necessary to achieve a corresponding surface smoothing, for example in a laundry shortage.
• the laundry shortage can be arranged both inside and outside the treatment chamber.
• the last-described process variant is particularly suitable for the treatment of laundry parts made of pure cotton.
• the steam contained in the chamber is either overheated within the chamber by heat exchangers or else superheated steam is introduced into the chamber.
• a rotating drum can also be used, which is initially filled with steam and later with superheated steam while displacing the air components.
• the steam can be overheated by means of heat exchangers via appropriate heat exchangers at the beginning of the second phase, the evaporation phase. Due to the overheating of the steam and the accompanying simultaneous evaporation of the moisture in the laundry, the steam volume increases continuously in the drying phase. As soon as a volume increase can no longer be determined, this is to be seen as a sign that the drying process of the laundry has been completed.
• a chamber with steam - for the heating phase and a chamber with superheated steam for the drying phase - can be arranged one after the other and between the two chambers as well as between the chambers and the outside atmosphere.
• the two gates of each lock are locked against each other in such a way that only one gate can be opened and a simultaneous opening of both gates of a lock is prevented.
• a slight overpressure in both the heating chamber and the evaporation chamber ensures that air cannot enter these chambers.
• the lock chambers are chosen to be so small that only a relatively small volume can escape into the surrounding atmosphere when they pass through. The air carried in when the laundry enters can be peeled off by directed steam radiation.
• the locks mentioned can be dispensed with entirely, if a container which is essentially closed on all sides is selected, which has one or more openings in the lower region, which is filled with steam from above and into which the laundry parts are fed in and out from below. Because of the lower specific density, the injected steam initially displaces the air in the container. If, according to the criteria described above, it can be seen that the laundry has reached a temperature of approx. 99 to 100 ° C. and the introduced steam no longer condenses, either superheated steam is introduced or the steam in the container is overheated by means of a heat exchanger . By evaporating the moisture on and in the laundry under the influence of the superheated steam, the steam volume increases considerably.
• the laundry can be introduced from the bottom upwards by means of a corresponding conveying device and passed through the treatment chamber at such a speed that there is a sufficiently long dwell time in the individual zones.
• the superheating temperature of the steam is chosen to be very high, for example at 220 ° C., during the first period of the drying phase.
• the fabric temperature does not rise above 100 ° C at normal pressure.
• the temperature is then reduced to such an extent that damage to the fabric is impossible. It was already explained above how the end of the drying phase can be recognized.
• Heat recovery only requires the amount of energy that is required during the heating phase of the laundry, ie the energy with which the laundry including the water it contains changes from the initial temperature (room temperature) to the final temperature of the heating phase (approx. 100 ° C) is heated. The he then in the drying phase required evaporation energy is latently retained in the excess steam. It is not lost.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatment Of Fiber Materials (AREA)
• Drying Of Solid Materials (AREA)
• Detergent Compositions (AREA)
• Detail Structures Of Washing Machines And Dryers (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (3)

Family

ID=6171160

Family Applications (1)

Country Status (5)

Cited By (2)

Families Citing this family (39)

Citations (11)

Family Cites Families (8)

• 1982
  • 1982-08-16 DE DE3230764A patent/DE3230764C2/de not_active Expired
• 1983
  • 1983-08-08 US US06/521,236 patent/US4527343A/en not_active Expired - Fee Related
  • 1983-08-11 AT AT83107947T patent/ATE48664T1/de not_active IP Right Cessation
  • 1983-08-11 DE DE8383107947T patent/DE3380967D1/de not_active Expired - Lifetime
  • 1983-08-11 EP EP83107947A patent/EP0101074B1/fr not_active Expired
  • 1983-08-16 JP JP58148876A patent/JPS5949800A/ja active Pending

Patent Citations (11)

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