EP0100082B1 - 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
EP0100082B1
EP0100082B1 EP83107266A EP83107266A EP0100082B1 EP 0100082 B1 EP0100082 B1 EP 0100082B1 EP 83107266 A EP83107266 A EP 83107266A EP 83107266 A EP83107266 A EP 83107266A EP 0100082 B1 EP0100082 B1 EP 0100082B1
Authority
EP
European Patent Office
Prior art keywords
air
deodorizing
drying
condenser
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.)
Expired
Application number
EP83107266A
Other languages
English (en)
French (fr)
Other versions
EP0100082A3 (en
EP0100082A2 (de
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.
  • a heat recovery system for a dry cleaner drying and deodorizing ciruit 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 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 machine 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 station not shown
  • 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°C and in the condensation zone of 25-30°C, whereas for the deodorizing step they are of 40°C and 15°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 reused 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 step 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 evaporator 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°C; 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 conensers 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 of 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)

Claims (5)

1: Wärmerückgewinnungseinrichtung für den Trocknungs- und Deodorierungskreislauf einer Trockenreinigungsmachine, mit in einer Verbindungsleitung (5) des Luftauslasses (4) und Einlasses (3) einer Reinigungstrommel (2) einem Verdampfer (8) einer Kühlmaschine und einer Heizbatterie (11), dadurch gekennzeichnet, daß die Kühlmaschine wenigstens zwei Kühler (12, 13) besitzt, von denen einer mit Kühlmedium gekühlt ist und welche in der Leitung (5) zwischen dem Verdampfer (8) und der Heizbatterie (11) angeordnet sind und Wärme mit der Luft vor deren Wiedereinführung in die Trommel austauschen.
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Heizbatterie (11) eine mit niedriger Leistung ist und am Beginn der Trocknungsstufe eingeschaltet wird.
3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kühler (12, 13) in Serie geschaltet sind und während der Trocknungsstufe der Strom des Kühlmediums in den mit Kühlmedium gekühlten Kühler (12) abgeschaltet wird.
4. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Kühler (12, 13) parallel geschaltet sind und während der Trocknungsstufe der mit Kühlmedium gekühlte Kühler (12) überbrückt wird.
5. Einrichtung nach den Ansprüche 1 bis 4, dadurch gekennzeichnet, daß ein By-pass (A2) im Luftkreislauf hinter dem Verdampfer (8) vorgesehen ist, um die Temperatur der den mit Kühlmedium gekühlten Kühler berührenden Luft zu regeln.
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 EP0100082A2 (de) 1984-02-08
EP0100082A3 EP0100082A3 (en) 1984-09-12
EP0100082B1 true 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)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2583076B1 (fr) * 1985-06-05 1987-09-18 Frimair Sa Machine de nettoyage a sec
DE3806610A1 (de) * 1988-03-02 1989-09-14 Otto Oeko Tech Anlage und verfahren zum abscheiden und rueckgewinnen von loesungsmitteln
US4984318A (en) * 1989-06-28 1991-01-15 Coindreau Palau Damaso Method and system for the recovering of solvents in dry cleaning machines
IT1235608B (it) * 1989-09-27 1992-09-11 Multimax Srl Macchina lavasecco a circuito chiuso
DE4428174A1 (de) * 1994-08-09 1996-02-15 Walter Dr Ing Baumann Vorrichtung und Verfahren zum Trocknen von Textilien bei der Reinigung in organischen Lösemitteln
JP4108072B2 (ja) * 2004-09-07 2008-06-25 三洋電機株式会社 乾燥機

Family Cites Families (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
US3664806A (en) * 1963-09-13 1972-05-23 Res Dev Co Dry cleaning of textile fibers and other garment materials with chlorofluoro hydrocarbons having relatively high freezing points
FR1391485A (fr) * 1964-04-28 1965-03-05 Procédé et installation de séchage de bois
DE2004650A1 (de) * 1969-02-13 1970-09-03 Apaw S.A., Freiburg (Schweiz) Maschine zur Trockenreinigung von Textilien, insbesondere von Kleidungsstücken
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
FR2467009A1 (fr) * 1979-10-10 1981-04-17 Amaten Procede et machine de traitement en milieu solvant
DE3013820A1 (de) * 1980-04-10 1981-10-15 Jürgen Dipl.-Ing. 8026 Irschenhausen Lambrecht Trockenverfahren mit rueckgewinnung der zur trocknung erforderlichen energie
DE3044331A1 (de) * 1980-11-25 1982-06-16 Multimatic Maschinen GmbH & Co, 4520 Melle Trockenreinigungsvorrichtung

Also Published As

Publication number Publication date
EP0100082A3 (en) 1984-09-12
DE3369714D1 (en) 1987-03-12
ATE25409T1 (de) 1987-02-15
IT8205011V0 (it) 1982-07-27
EP0100082A2 (de) 1984-02-08

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