US3800566A - Dry cleaning machine - Google Patents

Dry cleaning machine Download PDF

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Publication number
US3800566A
US3800566A US00268138A US3800566DA US3800566A US 3800566 A US3800566 A US 3800566A US 00268138 A US00268138 A US 00268138A US 3800566D A US3800566D A US 3800566DA US 3800566 A US3800566 A US 3800566A
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US
United States
Prior art keywords
tank
solvent
washing tank
machine
cycle
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.)
Expired - Lifetime
Application number
US00268138A
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English (en)
Inventor
G Zucchini
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.)
AMA ARTIGIANI MECC ASS
ARTIGIANI MECCANICI ASS SOC DI FATTO CASTELMAGGIORE IT
Original Assignee
AMA ARTIGIANI MECC ASS
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 AMA ARTIGIANI MECC ASS filed Critical AMA ARTIGIANI MECC ASS
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Publication of US3800566A publication Critical patent/US3800566A/en
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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

Definitions

  • a dry cleaning machine comprises a main washing tank, a pair of solvent tanks for storing solvent connected to the washing tank and a continuous-action V still and a condenser connected in series between the 3 Claims, 3 Drawing Figures DRY CLEANING MACHINE DESCRIPTION OF THE INVENTION
  • This invention relates to dry cleaning machines and, in particular, to continuous distillation dry. cleaning machines suitable for use with washing solvents having relatively low boiling points.
  • Known dry cleaning machines are provided, among other things, with one or'more vents through which the gases formed inside the washing tank during the operational cycles of the machine are continuously dis-. charged into the external atmosphere.
  • Continuous distillation dry cleaning machines are also known wherein there are at least two wash cycles and the solvent discharged from .the washing tank is subjected to a process of purification by evaporation, with the intent of separating the solvent from the impurities accumulated during the washing operation.
  • An important object of this invention is to obviate the aforementioned difficulties and, in particular, to supply a dry cleaning machine on which the discharge of the gases from inside the washing tank during the operational cycle takes place under conditions which are such that it is possible to completely prevent the loss of solvent from occurring.
  • a further object of the invention is to supply a dry cleaning machine for which the running cost is minimum.
  • the dry cleaning machine forming the subject of this in- .vention which comprises electro-mechanical follow-up means for allowing air to be sucked in from the outside or the air remaining inside the washing tank to be discharged into the external atmosphere as a function of the vacuum or pressure conditions within the machine, upon completion of the full operational cycle of the machine; a first and a second tank for the solvent, the first of which connecting with the tank discharge duct, the tanks being interconnected with an interposed continuous action still and a condenser for the distilled solvent being connected in series with the still; electromechanical follow-up means operative to allow the solvent coming from the washing tank, used for the last wash in the subsequent cycle without the said solvent passing through the aforementioned still and operative to allow the use of the solvent contained in the second solvent tank during the wash subsequent to the first, while contemporaneously, the solvent used for the first wash, discharged from the washing tank into the first solvent tank, is being distilled and sent to the aforementioned second solvent tank.
  • FIG. 1 shows diagrammatically the aeration circuit for the machine forming the subject of the invention, referred to the circuit for the drying of the washed garments.
  • FIG. 2 is an electrical wiring diagramshowing how the various devices indicated in FIG. 1 are connected to the circuit.
  • FIG. 3 is a working diagram 'of the solvent washing circuit for the machine forming the subject of the invention.
  • washing tank -1 communicates with an air filter 3 through a'duct 2.
  • a fan 5 has its intake connected to the air filter 3 through the duct 4 and its output connected to a condenser 7 through the duct 6.
  • the condenser 7 communicates, in turn, with a preheater 9 through a duct 8.
  • the pre-heater 9 is connected, in turn, with the'washing tank 1 via a duct 10.
  • a duct 13 communicates with the washing tank 1 and with the external atmosphere.
  • a valve indicated at 14 is installed to close the duct 13.
  • a door 15 seals the washing tankl and its operation is dependent upon an interlocking device 16, of a known type, more about which will be. said in due course.
  • a changeover switch is indicated at 17 and this is provided with a moving contact 17a and two fixed contacts 17b and 17c.
  • the fixed contact 17b is connected to a relay 18 whose moving contact can operate on a fixed contact 18b and on a fixed contact 180, the former being connected to the device 16 for locking the door 15 and the latter to the control units belonging to the valve 11.
  • the fixed contact 17c is connected to a relay 19 whose moving contact 19a can operate on a fixed contact 19b and on a fixed contact 190, the former being connected to the control units belonging to the valve 12 and the latter to the control units belonging to the valve 14. Furthermore, the fixed contact'17c is also connected to a time relay 20 whose moving contact 20a can operate on a fixed contact 20b connected to the relay l8.
  • the fan 5 causes the cycle fluid in the said circuit to undergo forced circulation and thus the fluid passes through the filter 3 and the condenser 7 and is gradually purified until it is totally separated from the previously absorbed gases which, in accordance with known practices, are recovered through the condenser 7.
  • the aforementioned gasification of the solvent it is possible that a certain pressure is created inside the tank 1 which has to be balanced and destroyed before the tank sealing door is opened.
  • the changeover switch 17 is set on the fixed contact 17c and this brings about the energization of the time relay 20 and of the relay 19. What actually happens is that the moving contact 19a operates on the fixed contact 19b, whilst the time relay 20 enables the relay 18 to be kept energized and this continues its action on the device 16 for locking the door 15.
  • the non-energized control units belonging to the valve 14 open the relief valve 14 and thus place the tank 1 in communication with the external atmosphere, whilst at the same time, the valve 12 is closed and this closes the duct 2.
  • the moving contact 20a of the time relay 20 ceases its action on the fixed contact 20b.
  • valve 11 is closed and this closes the duct 10.
  • the device 16 for locking the door 15 ceases to exercise an interlocking action and thus it is possible to open the said door.
  • the opening of the said door only becomes possible once the washing tank has already been placed in communication with the external atmosphere, that is to say, once any pressure which has been created inside the said tank has been destroyed.
  • the still 27 is connected direct to a condenser 34 which, through a duct 29 is linked with the tank 22.
  • valves 30, 31, 32 and 33, respectively, serve to close the duct 23, the duct 26, the branch pipe 28 and the duct 24.
  • the solvent contained in the tank 21 is, in the first stage, sucked up by the pump 25 and, via the ducts 26 and 28 and the valve 32, is made to flow inside the tank 1.
  • the valve 30 opens and the solvent contained in the tank 1 returns back into the tank 21 whence, again drawnup by the pump 25, it is made to flow into the still 27 through the duct 26 and the valve 31.
  • valve 33 opens and the solvent contained in the tank 22 flows inside the washing tank 1 for the garments to be given a second wash.
  • the distillation solvent passes through the condenser 34 and the duct 29 and into the tank 22, whilst the valve 33', in the meantime closed, prevents it from running out of the said tank.
  • the solvent contained in the tank 21 previously used for the final wash in the first washing cycle is now used again for the subsequent washing cycle.
  • the pump 25 draws solvent out of the tank 21 and this solvent goes, through the ducts 26 and 28 and the valve 32 back into the washing tank 1 whence it is again discharged into the tank 21, is picked up again by the pump 25 and is passed into the still 27, after which'the second washing cycle is initiated in accordance with the aforementioned procedure.
  • a machine for dry cleaning comprising: a main washing tank, a closed forced aeration circuit for drying the cleaned garments or fabrics contained in said washing tank, electro-mechanical follow-up means operative as a function of the vacuum or pressure conditions within the machine to vent said tank to atmosphere, to allow air to be sucked in from the outside or the air remaining inside said main washing tank to be discharged to the external atmosphere upon completion of the full operational cycle of the machine; a closed circuit for washing and dry cleaning said fabrics in a wash cycle comprising two washes in each cycle, including a first and a second tank for the solvent; a tank discharge duct connecting said main washing tank to said first tankand a duct connecting said second tank to said main washing tank; duct means interconnecting said first and second tanks in series with a continuous action still and a condenser for the distilled solvent and additional duct means connecting said first tank directly to said main washing tank; and other electro-mechanical follow-up means operative to allow the solvent discharged from the washing tank and used for the last wash in the first
  • a machine wherein said main washing tank is provided with a sealing door and an interlocking device is connected to said electromechanical follow-up means operative as a function of the vacuum or pressure conditions within the machine to allow air to be sucked in from the outside or the air remaining inside said main washing tank to be discharged to the external atmosphere upon completion of the full operational cycle of the machine; said interlocking device being connected to the washing tank sealing door and permitting the said door to be opened for removal of the cleaned fabrics only after the intake or the discharge of air from and into the external atmosphere has first taken place.
  • a machine including in said aeration circuit for drying the washed garments at least two valves connected in the ducts of said aeration circuit and controlled by said followup means which enable the gases to be discharged into the external atmosphere and being operative to close the ducts at the time the washing tank sealing door is opened to prevent

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
US00268138A 1971-07-02 1972-06-30 Dry cleaning machine Expired - Lifetime US3800566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT346471 1971-07-02

Publications (1)

Publication Number Publication Date
US3800566A true US3800566A (en) 1974-04-02

Family

ID=11107852

Family Applications (1)

Application Number Title Priority Date Filing Date
US00268138A Expired - Lifetime US3800566A (en) 1971-07-02 1972-06-30 Dry cleaning machine

Country Status (3)

Country Link
US (1) US3800566A (de)
DE (1) DE2147125A1 (de)
FR (1) FR2144686B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301379A (en) * 1991-08-08 1994-04-12 Rewatec Ag Dry-cleaning method using ignitable or potentially explosive solvents

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123792A1 (de) * 1981-06-16 1982-12-30 Multimatic Maschinen GmbH & Co, 4520 Melle Verfahren und vorrichtung zum reinhalten der umgebungsluft beim entleeren und reinigen der destillierblase von trockenreinigungsvorrichtungen
DE3234105A1 (de) * 1982-09-14 1984-03-22 Multimatic Maschinen GmbH & Co, 4520 Melle Verfahren und vorrichtung zum vermindern der loesungsmittelkonzentration in waschtrommelgehaeusen von trockenreinigungsvorrichtungen nach beendigung des waschvorgangs

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865218A (en) * 1928-04-07 1932-06-28 Albert T Otto & Sons Inc Apparatus for treating rolled fabric
US2019896A (en) * 1932-02-15 1935-11-05 Edlich William Recovery control
US3002287A (en) * 1960-02-18 1961-10-03 Detrex Chem Ind Control means for solvent recovery machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1137608A (fr) * 1954-10-08 1957-05-31 Italia Off Machine à laver combinée pouvant fonctionner arbitrairement avec du trichloréthylène ou analogue ou avec de l'eau
FR1317665A (de) * 1961-03-23 1963-05-10
NL122515C (de) * 1962-04-10
CH482052A (fr) * 1967-09-06 1969-11-30 Zolra Ag Procédé et dispositif de nettoyage à sec des vêtements
DE1949017A1 (de) * 1969-09-27 1971-04-01 Seco Maschb Gmbh & Co Kg Verfahren zum Reinigen von Kleidungsstuecken

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1865218A (en) * 1928-04-07 1932-06-28 Albert T Otto & Sons Inc Apparatus for treating rolled fabric
US2019896A (en) * 1932-02-15 1935-11-05 Edlich William Recovery control
US3002287A (en) * 1960-02-18 1961-10-03 Detrex Chem Ind Control means for solvent recovery machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5301379A (en) * 1991-08-08 1994-04-12 Rewatec Ag Dry-cleaning method using ignitable or potentially explosive solvents

Also Published As

Publication number Publication date
DE2147125A1 (de) 1973-01-11
FR2144686A1 (de) 1973-02-16
FR2144686B1 (de) 1976-01-16

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