EP0420103A2 - Trockenreinigungsmaschine mit einem geschlossenen Kreis - Google Patents

Trockenreinigungsmaschine mit einem geschlossenen Kreis Download PDF

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Publication number
EP0420103A2
EP0420103A2 EP90118310A EP90118310A EP0420103A2 EP 0420103 A2 EP0420103 A2 EP 0420103A2 EP 90118310 A EP90118310 A EP 90118310A EP 90118310 A EP90118310 A EP 90118310A EP 0420103 A2 EP0420103 A2 EP 0420103A2
Authority
EP
European Patent Office
Prior art keywords
solvent
refrigerating fluid
circuit
cooling
duct
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90118310A
Other languages
English (en)
French (fr)
Other versions
EP0420103B1 (de
EP0420103A3 (en
Inventor
Giovanni Innesto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TUSA MAURIZIO
Original Assignee
Tusa Maurizio
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tusa Maurizio filed Critical Tusa Maurizio
Publication of EP0420103A2 publication Critical patent/EP0420103A2/de
Publication of EP0420103A3 publication Critical patent/EP0420103A3/en
Application granted granted Critical
Publication of EP0420103B1 publication Critical patent/EP0420103B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D06F43/00—Dry-cleaning apparatus or methods using volatile solvents
    • D06F43/08—Associated apparatus for handling and recovering the solvents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits

Definitions

  • the present invention relates to a closed-circuit dry-­cleaning machine.
  • dry-cleaning machines generally use a solvent such as perchloroethylene for washing.
  • a solvent such as perchloroethylene
  • the washed fabrics are dried by circulating within the washing container an adequate flow of warm air which causes the evaporation of the solvent.
  • the warm drying air is circulated in a closed circuit provided with a cooling device for recovering the solvent.
  • said cooling device consists of an evaporator through which there flows a refrigerating fluid fed by a conventional compressor driven refrigeration system.
  • a refrigerating fluid fed by a conventional compressor driven refrigeration system.
  • the mixture of air and solvent vapors which exits from the washing container is conveyed so as to strike the evaporator of the refrigeration system, so that the solvent condenses and can therefore be collected and reused in other washing cycles.
  • the air, purified of the solvent is instead heated and again circulated to the washing container until the drying step is completed.
  • the recovered solvent is then subjected to a distillation step so as to separate the impurities surfacing during the washing.
  • the dry-cleaning system usually provides the water-cooling of the refrigerating fluid and of the solvent vapors produced by distillation.
  • the aim of the present invention is to solve the above described problem by providing a dry-cleaning machine which operates in closed circuit, with recovery of the solvent by means of a refrigeration system which allows to also cool the refrigerating fluid during drying and to cool the solvent vapors during distillation.
  • a further object of the present invention is to provide a dry-cleaning machine which is simple in concept and is safely reliable in operation.
  • the present closed-circuit dry cleaning machine of the kind which comprises a washing container connected to the input and to the output of a closed circuit which is adapted to be traversed by a flow of warm air for the drying of a washing solvent and is provided with a cooling device for recovering the solvent, characterized in that said cooling device consists of a refrigeration circuit having a compressor adapted to circulate a refrigerating fluid drawn from a tank through a duct which branches out into two portions which respectively pass through a drying unit and a unit for cooling said solvent, said units having respective valve means for the expansion of said refrigerating fluid.
  • the refrigeration circuit of the dry cleaning machine is generally indicated by the reference numeral 1.
  • Said refrigeration circuit has a compressor 2 which is adapted to circulate an appropriate refrigerating fluid, such as freon; the refrigerating fluid is drawn from a tank 3 through a duct 4 and returns to said tank through a duct 5.
  • an appropriate refrigerating fluid such as freon
  • the drawing duct 4 branches out into two portions 4a, 4b which respectively pass through a drying unit 6 and a unit 7 for cooling the solvent, such as perchloroethylene, used in the machine.
  • the drying unit 6 and the cooling unit 7 are provided with respective thermostatic expansion valves 8 and 9 for the expansion of the refrigerating fluid; the units 6 and 7 are furthermore controlled by respective electric valves 10 and 11 arranged on the ducts 4a and 4b.
  • the return duct 5 has a heat exchanger 12 which constitutes the condenser of the refrigeration circuit.
  • the duct 5 furthermore has a parallel branching 5a, 5b which has a further unit 13 which is intended to act as heat pump and is adapted to preheat the flow of air which is intended to pass through the washing container; a one-way valve 14 is arranged after said unit 13.
  • the two branches 5a, 5b of the duct 5 are cutoff by respective electric valves 15 and 16. Downstream of the unit 13 a further solvent heat exchanger 21 is provided.
  • the refrigeration circuit is furthermore provided with a low-pressure switch 17 and with a high-pressure switch 18 which are respectively arranged on the ducts 4 and 5, and with a further electric valve 19 arranged upstream of the heat exchanger 12.
  • a filter 20 for the refrigerating fluid is provided downstream of the tank 3 .
  • the operation of the described machine is as follows. When the dry-cleaning machine is not washing, the electric valves 11 and 19 are opened. The refrigerating fluid therefore passes through the cooling unit 7 and cools the solvent, whereas the heat produced by the refrigeration system is dispersed by means of the heat exchanger 12.
  • the electric valves 10 and 16 are opened so that the refrigerating fluid circulates through the units 6 and 13.
  • the cooled solvent removes from the refrigerating fluid the excess heat, which has not been used in the heat pump.
  • the electric valve remains open and the electric valve 15 is opened, while the electric valve 16 is instead closed.
  • the refrigerating fluid exiting from the compressor 2 is sent to the solvent heat exchanger 21.
  • the described refrigeration system has a solvent cooling circuit which replaces the conventional water-based cooling of the refrigerating fluid and the equally water-based cooling of the solvent vapors in distillation.
  • the materials employed, as well as the shape and dimensions, may be any according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
EP90118310A 1989-09-27 1990-09-24 Trockenreinigungsmaschine mit einem geschlossenen Kreis Expired - Lifetime EP0420103B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT363389 1989-09-27
IT8903633A IT1235608B (it) 1989-09-27 1989-09-27 Macchina lavasecco a circuito chiuso

Publications (3)

Publication Number Publication Date
EP0420103A2 true EP0420103A2 (de) 1991-04-03
EP0420103A3 EP0420103A3 (en) 1992-01-29
EP0420103B1 EP0420103B1 (de) 1996-06-19

Family

ID=11110937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90118310A Expired - Lifetime EP0420103B1 (de) 1989-09-27 1990-09-24 Trockenreinigungsmaschine mit einem geschlossenen Kreis

Country Status (3)

Country Link
EP (1) EP0420103B1 (de)
DE (1) DE69027494T2 (de)
IT (1) IT1235608B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6375686B1 (en) 2000-05-08 2002-04-23 Su Heon Kim Method and apparatus for treating spots on a spotting table with a spotting gun
EP1584731A3 (de) * 2004-03-15 2007-11-14 SANYO ELECTRIC Co., Ltd. Trockenreinigungsmaschine und zugehöriger Trockner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391550A (en) * 1962-05-28 1968-07-09 L T Ind Inc Drycleaning machine
DE2004650A1 (de) * 1969-02-13 1970-09-03 Apaw S.A., Freiburg (Schweiz) Maschine zur Trockenreinigung von Textilien, insbesondere von Kleidungsstücken
DE3044331A1 (de) * 1980-11-25 1982-06-16 Multimatic Maschinen GmbH & Co, 4520 Melle Trockenreinigungsvorrichtung
IT8205011V0 (it) * 1982-07-27 1982-07-27 Donini Int Spa Recuperatore di calore perfezionato per circuito di asciugatura e deodorizzazione in macchina lavasecco
EP0260333A1 (de) * 1986-09-16 1988-03-23 Giorgio Luppi Trockenreinigungsanlage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6375686B1 (en) 2000-05-08 2002-04-23 Su Heon Kim Method and apparatus for treating spots on a spotting table with a spotting gun
EP1584731A3 (de) * 2004-03-15 2007-11-14 SANYO ELECTRIC Co., Ltd. Trockenreinigungsmaschine und zugehöriger Trockner

Also Published As

Publication number Publication date
IT1235608B (it) 1992-09-11
EP0420103B1 (de) 1996-06-19
DE69027494T2 (de) 1996-10-31
DE69027494D1 (de) 1996-07-25
EP0420103A3 (en) 1992-01-29
IT8903633A0 (it) 1989-09-27

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