EP0100082A2 - Wärmerückgewinnungseinrichtung für den Trocknungs- und Deodorierungskreislauf einer Trockenreinigungsmaschine - Google Patents

Wärmerückgewinnungseinrichtung für den Trocknungs- und Deodorierungskreislauf einer Trockenreinigungsmaschine Download PDF

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Publication number
EP0100082A2
EP0100082A2 EP83107266A EP83107266A EP0100082A2 EP 0100082 A2 EP0100082 A2 EP 0100082A2 EP 83107266 A EP83107266 A EP 83107266A EP 83107266 A EP83107266 A EP 83107266A EP 0100082 A2 EP0100082 A2 EP 0100082A2
Authority
EP
European Patent Office
Prior art keywords
air
condenser
drying
deodorizing
drum
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
EP83107266A
Other languages
English (en)
French (fr)
Other versions
EP0100082B1 (de
EP0100082A3 (en
Inventor
Tommaso Arbizzani
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.)
Donini International SpA
Original Assignee
Donini International SpA
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 Donini International SpA filed Critical Donini International SpA
Priority to AT83107266T priority Critical patent/ATE25409T1/de
Publication of EP0100082A2 publication Critical patent/EP0100082A2/de
Publication of EP0100082A3 publication Critical patent/EP0100082A3/en
Application granted granted Critical
Publication of EP0100082B1 publication Critical patent/EP0100082B1/de
Expired 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
    • D06F43/086—Recovering the solvent from the drying air current

Definitions

  • This invention relates to an improved heat recovery system for a dry cleaner drying and deodorizing circuit.
  • a drying step is next carried out to remove, from the cleaned articles of clothing, most of the solvent and moisture present therein, which is followed by a deodorizing step directed to remove from said articles of clothing even the last traces of solvent.
  • the drying and deodorizing steps have optimum operating temperatures, depending on the type of solvent being used.
  • Dry cleaners with such construction operate quite well but involve a more than indifferent energy consumption during the drying and deodorizing steps.
  • the task of this invention is to provide an improved heat recovery system for a dry cleaner drying and deodorizing circuit, which can afford substantial energy savings both during the drying step and deodorizing step.
  • an improved heat recovery system for a dry cleaner drying and deodorizing circuit having, in a connection conduit of the air outlet and inlet of a cleaning drum, an evaporator of a refrigerating machine and a heating battery, characterized in that said refrigerating machine has at least two condensers, one of which is advantageously cooled by a cooling fluid, which are located in said conduit between said evaporator and said heating battery and which exchange heat with the air prior to its re-introduction into the drum.
  • a dry cleaner portion incorporating the improved heat recovery system for a drying and deodorizing circuit according to the invention.
  • the dry cleaner 1 has a cleaning drum chamber 2 shown only in part and provided with an inlet 3 for the drying air and an outlet 4 for the air-moisture and solvent mixture; the outlet 4 and inlet 3 are interconnected externally to the chamber 2 by a composite conduit 5 extending from the outlet 4 to the inlet 3 and having a first section 5a, a second section 5b and a third section 5c.
  • the second section 5b comprises two passages in by-pass relationship to each other and shown by arrows A1 and A2.
  • a fan 6 is operative to drive the airflow in the direction of the arrows A1 and A2.
  • Located between sections 5a and 5b of conduit 5 is a filter 7. After the filter 7, the airflow A is divided into two branches A1 and A2.
  • the second section 5b of the conduit 5 has an evaporator 8 of a refrigerating machiae R positioned in the passage A1 and which is provided to lower the air-solvent-moisture mixture temperature and cause the moisture and solvent present in the mixture to be condensed; the condensed moisture and solvent are collected on an inclined wall 9 underlying the evaporator and removed through a pipe union 10 toward a station (not shown) for separating the solvent from water.
  • a heating battery 11 advantageously of the electric resistance heater type, for the air prior to its re-introduction into the drum; in practice, both during the drying step and during the deodorizing step the air is admitted into the drum in a hot state to promote removal of the moisture and solvent present in the articles of clothing being cleaned, and is then cooled by the evaporator 8 upon leaving the drum to condense the moisture and solvents present in the air.
  • the optimum temperatures of the mixture at the introduction into the drum and at the condensation zone vary when passing from the drying step to the deodorizing step, depending on the solvent used.
  • the temperature during the drying step is at the entrance of 65-70° 0 and in the condensation zone of 25-30° C, whereas for the deodorizing step they are of 40° 0 and 15 0 C, respectively.
  • the condenser 12 is of the water-cooled pipe coil type and is advantageously located upstream of the air condenser 13, the latter being in turn located near the inlet 3;
  • the condensers 12 and 13 are a source of heat which is in practice fully utilized to heat the air prior to its re-introduction into the drum.
  • the condensers 12 and 13 may be either assembled in series (Fig. 1) or in parallel (Fig.
  • valve means 15,16,17,17' are provided which are adapted to: either cut off, during the drying step, the waterflow to the condenser 12 such that the latter can transfer all the calories produced to the drying air (thus recovering almost all of the energy normally dissipated in those systems which have said condenser located externally to the drying conduit); or, during the deodorizing step, supply said condenser 12 with cooling water, thereby providing, on the one side, faster cooling of the air, and on the other side, recovery of energy by virtue of the cooling water frigories being rensed which with conventional systems (having the condenser 12 on the outside) are dissipated.
  • valve 17' is closed, whereas during the deodorization step the valve 17' is open.
  • valve 15 is open and valves 16 and 17 are closed, whereas during the deodorization ste valve 15 is closed and valves 16 and 17 are open.
  • the so called secondary condenser 12 both in case in which it is series connected or connected in parallel with the main condenser 13, is active in the deodorizing step. Its function is to absorb the heat taken by the evaporator 8 from the air, so as to allow the air which passes through the evaporator 8 to reach in a very short time of a few minutes very low temperature levels, which make it possible to completely recover the solvent contained therein. Instead, during the drying step, since it is necessary to recover heat in order to raise the temperature of the air, the condenser 12 is closed.
  • the condenser 8 is in every .case effective; during the drying step because of the exclusion of the condenser 12, it will cool the air to values of 5-6°0; during the deodorization, owing to the operation of the condenser 12, it will cause the air to reach far lower temperatures even below zero point.
  • the energy recovery enabled by providing the two condensers 12 and 13 in the conduit 5 is quite substantial, so much that the heating battery 11 may be a low power one and only be energized during the initial stage of the drying step to reach operating temperature, thereafter it may be shut off without problem because the heat required to raise the air temperature prior to its re-introduction into the drum is supplied entirely by the condensers 12 and 13.
  • Black arrows in the drawing show the air-solvent-moisture mixture and white arrows show the drying and deodorizing air; the other components of the refrigerating machine are not shown in the figure because known per se.
  • valve 17 is opened so that water is supplied to the condenser 12, so that the temperature of the air contacting the cool surface of the condenser 12 will sink and consequently a more rapid cooling thereof will ensue.
  • the ratio of the rate of flow of the by-passing air according to arrow A2 to the flow of arrow A1 may be regulated according to the requirements by valve means not shown in the drawing so that the total reunited air flow reaching the condenser 12 may have the desired mean temperature for an advantageous energy recovery.
  • the mean temperature should be considered only from a theoretical point of view, while in actual practice the total air current reaching the condenser 12 may have partial air streams at higher and lower temperature as compared to the theoretical average temperature and this is the reason why the above explained effect occurs.
  • the mixing of hot and cool air streams which flow together after the by-passing portion may be regulated by suitable blending means, not shown in the drawing.
  • the materials used, as well as the shapes and dimensions, may be any selected ones to meet individual requirements, without in so doing departing from the protection scope of the appended claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Processing Of Solid Wastes (AREA)
EP83107266A 1982-07-27 1983-07-25 Wärmerückgewinnungseinrichtung für den Trocknungs- und Deodorierungskreislauf einer Trockenreinigungsmaschine Expired EP0100082B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107266T ATE25409T1 (de) 1982-07-27 1983-07-25 Waermerueckgewinnungseinrichtung fuer den trocknungs- und deodorierungskreislauf einer trockenreinigungsmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT501182U 1982-07-27
IT8205011U IT8205011V0 (it) 1982-07-27 1982-07-27 Recuperatore di calore perfezionato per circuito di asciugatura e deodorizzazione in macchina lavasecco

Publications (3)

Publication Number Publication Date
EP0100082A2 true EP0100082A2 (de) 1984-02-08
EP0100082A3 EP0100082A3 (en) 1984-09-12
EP0100082B1 EP0100082B1 (de) 1987-02-04

Family

ID=11116929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107266A Expired EP0100082B1 (de) 1982-07-27 1983-07-25 Wärmerückgewinnungseinrichtung für den Trocknungs- und Deodorierungskreislauf einer Trockenreinigungsmaschine

Country Status (4)

Country Link
EP (1) EP0100082B1 (de)
AT (1) ATE25409T1 (de)
DE (1) DE3369714D1 (de)
IT (1) IT8205011V0 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583076A1 (fr) * 1985-06-05 1986-12-12 Frimair Sa Machine de nettoyage a sec
EP0331611A2 (de) * 1988-03-02 1989-09-06 OTTO OEKO-TECH GMBH & CO. KG Anlage zum Reinigen von Werkstücken
EP0405941A2 (de) * 1989-06-28 1991-01-02 Damaso Coindreau-Palau Verfahren und Vorrichtung zur Rückgewinnung von Lösungsmitteln in Trockenreinigungsmaschinen
EP0420103A2 (de) * 1989-09-27 1991-04-03 Tusa, Maurizio Trockenreinigungsmaschine mit einem geschlossenen Kreis
WO1996005351A1 (de) * 1994-08-09 1996-02-22 Walter Baumann Vorrichtung und verfahren zum trocknen von textilien bei der reinigung in organischen lösemitteln
EP1637641A2 (de) * 2004-09-07 2006-03-22 SANYO ELECTRIC Co., Ltd. Wäschetrockner

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE644124C (de) * 1935-02-13 1937-04-24 Escher Wyss Maschf Ag Trockenanlage
DE743271C (de) * 1939-03-10 1943-12-22 Franz Pichler Dipl Ing Verfahren und Anlage zum Trocknen von feuchtem Gut
FR1391485A (fr) * 1964-04-28 1965-03-05 Procédé et installation de séchage de bois
CH470917A (de) * 1963-09-13 1969-04-15 Res Dev Company Verfahren und Vorrichtung zur Reinigung von Stoffen, insbesondere von textilen Bekleidungsstücken
US3610002A (en) * 1969-02-13 1971-10-05 Poerio Carpigiani Wearing apparels dry cleaning machine
CH608289A5 (en) * 1976-06-15 1978-12-29 Escher Wyss Gmbh Drying apparatus, in particular for paper machines
DE2902369A1 (de) * 1979-01-22 1980-08-07 Happel Kg Einrichtung zum entfeuchten und temperieren der in einer trocknungskammer fuer die holztrocknung bewegten kammerluft
US4247991A (en) * 1979-10-01 1981-02-03 Intertechnology/Solar Corporation Industrial drying
GB2060713A (en) * 1979-10-10 1981-05-07 Amaten Sa Treating fabric articles with solvents
DE3013820A1 (de) * 1980-04-10 1981-10-15 Jürgen Dipl.-Ing. 8026 Irschenhausen Lambrecht Trockenverfahren mit rueckgewinnung der zur trocknung erforderlichen energie
EP0053727A1 (de) * 1980-11-25 1982-06-16 Multimatic Maschinen GmbH. & Co. Trockenreinigungsvorrichtung

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE644124C (de) * 1935-02-13 1937-04-24 Escher Wyss Maschf Ag Trockenanlage
DE743271C (de) * 1939-03-10 1943-12-22 Franz Pichler Dipl Ing Verfahren und Anlage zum Trocknen von feuchtem Gut
CH470917A (de) * 1963-09-13 1969-04-15 Res Dev Company Verfahren und Vorrichtung zur Reinigung von Stoffen, insbesondere von textilen Bekleidungsstücken
FR1391485A (fr) * 1964-04-28 1965-03-05 Procédé et installation de séchage de bois
US3610002A (en) * 1969-02-13 1971-10-05 Poerio Carpigiani Wearing apparels dry cleaning machine
CH608289A5 (en) * 1976-06-15 1978-12-29 Escher Wyss Gmbh Drying apparatus, in particular for paper machines
DE2902369A1 (de) * 1979-01-22 1980-08-07 Happel Kg Einrichtung zum entfeuchten und temperieren der in einer trocknungskammer fuer die holztrocknung bewegten kammerluft
US4247991A (en) * 1979-10-01 1981-02-03 Intertechnology/Solar Corporation Industrial drying
GB2060713A (en) * 1979-10-10 1981-05-07 Amaten Sa Treating fabric articles with solvents
DE3013820A1 (de) * 1980-04-10 1981-10-15 Jürgen Dipl.-Ing. 8026 Irschenhausen Lambrecht Trockenverfahren mit rueckgewinnung der zur trocknung erforderlichen energie
EP0053727A1 (de) * 1980-11-25 1982-06-16 Multimatic Maschinen GmbH. & Co. Trockenreinigungsvorrichtung

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583076A1 (fr) * 1985-06-05 1986-12-12 Frimair Sa Machine de nettoyage a sec
US4694588A (en) * 1985-06-05 1987-09-22 Frimair S.A. Dry cleaning machine
EP0331611A2 (de) * 1988-03-02 1989-09-06 OTTO OEKO-TECH GMBH & CO. KG Anlage zum Reinigen von Werkstücken
EP0331611A3 (de) * 1988-03-02 1989-10-18 OTTO OEKO-TECH GMBH & CO. KG Anlage zum Reinigen von Werkstücken
EP0405941A2 (de) * 1989-06-28 1991-01-02 Damaso Coindreau-Palau Verfahren und Vorrichtung zur Rückgewinnung von Lösungsmitteln in Trockenreinigungsmaschinen
EP0405941A3 (en) * 1989-06-28 1992-03-04 Damaso Coindreau-Palau Method and system for the recovering of solvents in dry cleaning machines
EP0420103A2 (de) * 1989-09-27 1991-04-03 Tusa, Maurizio Trockenreinigungsmaschine mit einem geschlossenen Kreis
EP0420103A3 (en) * 1989-09-27 1992-01-29 Multimax S.R.L. Closed-circuit dry-cleaning machine
WO1996005351A1 (de) * 1994-08-09 1996-02-22 Walter Baumann Vorrichtung und verfahren zum trocknen von textilien bei der reinigung in organischen lösemitteln
EP1637641A2 (de) * 2004-09-07 2006-03-22 SANYO ELECTRIC Co., Ltd. Wäschetrockner
EP1637641A3 (de) * 2004-09-07 2009-01-07 SANYO ELECTRIC Co., Ltd. Wäschetrockner

Also Published As

Publication number Publication date
EP0100082B1 (de) 1987-02-04
EP0100082A3 (en) 1984-09-12
DE3369714D1 (en) 1987-03-12
ATE25409T1 (de) 1987-02-15
IT8205011V0 (it) 1982-07-27

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