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WO1997039839A1 - Dispositif permettant de laver, de rincer et de secher des objets tel que des chariots de restauration utilises a bord d'avions - Google Patents

Dispositif permettant de laver, de rincer et de secher des objets tel que des chariots de restauration utilises a bord d'avions Download PDF

Info

Publication number
WO1997039839A1
WO1997039839A1 PCT/DK1997/000181 DK9700181W WO9739839A1 WO 1997039839 A1 WO1997039839 A1 WO 1997039839A1 DK 9700181 W DK9700181 W DK 9700181W WO 9739839 A1 WO9739839 A1 WO 9739839A1
Authority
WO
WIPO (PCT)
Prior art keywords
cage
carts
washing
flushing
housing
Prior art date
Application number
PCT/DK1997/000181
Other languages
English (en)
Inventor
Kim S. Rasmussen
Original Assignee
Ken Maskinfabrik A/S
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 Ken Maskinfabrik A/S filed Critical Ken Maskinfabrik A/S
Priority to DE69700666T priority Critical patent/DE69700666T2/de
Priority to EP97918071A priority patent/EP0898501B1/fr
Priority to AU26341/97A priority patent/AU2634197A/en
Publication of WO1997039839A1 publication Critical patent/WO1997039839A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays

Definitions

  • a device for washing, flushing and drying objects such as catering carts, for use on board aircraft
  • the invention relates to a device for washing, flushing and drying objects, such as catering carts, for use on board aircraft, and comprising a housing to receive the objects which are secured by holding means which are pro ⁇ vided in the housing, said housing accommodating washing nozzles, flushing nozzles and means for centrifuging the objects during washing, flushing and drying.
  • catering carts also called trolleys
  • a meal is served to the passen- gers .
  • the catering carts are packed with the soiled service and are returned to another large-scale kitchen in another airport.
  • a machine for the cleaning of catering carts is known e.g. from the published Swedish patent application No. 91 12 20.
  • This known machine consists of a housing which has a door through which the catering carts may be run into a compartment in the housing.
  • the carts are secured by some gripping means, and, when placed in the housing, the carts are washed during centrifugation. After washing, the carts are dried, which also takes place by centrifu ⁇ gation, but at a somewhat greater speed. It is clear that the higher the speed of the centrifugation is, the faster the carts will be dried.
  • this washer operates at cen ⁇ trifugation speeds in the range from 30 to 90 revolutions per minute.
  • the European published patent application No. 569 885 discloses a similar machine in which the centrifugation can take place according to different patterns of motion, such as oscillating or in step.
  • the object of the invention is to provide a washer which allows the washing time to be reduced while maintaining sufficient safety conditions.
  • the object of the invention is achieved by a washer of the type mentioned in the opening paragraph, which is characterized in that the objects are confined in a cage during washing, flushing and drying. It is ensured hereby that if some piece of tableware or a glass is left, such an object will be retained inside the cage even at a high centrifugation speed.
  • the cage may be box-shaped, which is the most optimum in connection with catering carts which themselves are box-shaped.
  • the cage When the cage is centrifuged together with the objects, it is ensured that if e.g. a plate or the like remains in a catering cart and is thrown out, it will hit the cage more "softly” than if it is thrown right out to the inner wall of the washer.
  • the cage also protects the inner parts of the machine against damage caused by impacts, squeezing and wedging of loose parts coming from the washed objects.
  • the cage is formed by a wire net which is arranged vertically slid- ably inside the housing, which is an advantage in terms of minimizing the weight of the cage.
  • the holding means are formed by a rod which is fixed on each side of the cage, and the rod has slidable hooks which are adapted to engage an edge on the objects, a secure attachment of the catering carts is achieved during centrifugation, as the hooks have a good grip of an upper edge which is usually formed on the carts.
  • the holding means additionally serve to en- sure that the doors on the carts can open during the process. If these are not attached, the carts will move to the inner side of the cage, and this will prevent the doors from opening.
  • the slidable rod prevents overturning of a single cart when it stands by itself, and the ma- chine is subjected to the washing pressure.
  • a spacer is provided on one or more of the inner sides of the cage, said spacer preventing the cart from leaning against the walls of the cage, which may cause the doors to be closed during washing.
  • the housing has two ver- tically slidable doors, as stated in claim 7. This pro ⁇ vides the advantage that one door may serve as an inlet side for catering carts to be washed, while the other door may be used for removing cleaned doors.
  • the wash ⁇ ing time may be reduced additionally, as all internal sides are effectively cleaned in this manner, since all internal sides will thus have the same washing time.
  • the device is recessed in a cavity m a floor, and that the device in the cavity is supported by two rings of the same outside diameter, the first ring having an inside diameter which is smaller than the diameter of the second ring, and that the second ring is arranged on top of the first ring, said first ring being made of polyurethane, said second ring being made of soft polyurethane, which is desirable in particu ⁇ lar in connection with high centrifugation speeds, as the strongest vibrations are effectively damped hereby.
  • the washer of the invention is adapted to run at centrifuga- tion speeds of at least 120 revolutions per minute.
  • fig. 1 shows the washer of the invention in a first state of operation
  • fig. 2 shows constructional parts which are incorporated in the washer
  • fig. 3 shows the cage for mounting in the washer
  • fig. 4 shows holding means which are arranged inside the cage of fig. 3,
  • figs. 5A-5F schematically show the movement of the spray ⁇ ing nozzles
  • fig. 6 shows some additional constructional details of the washer
  • fig. 7 shows how the washer is arranged on a base.
  • the washer of the invention is generally desig- nated 1.
  • 2 and 3 designate slidable doors which are shown vertically displaced in fig. 1, thereby providing an openmg on the both sides of the washer.
  • a cage 4 is arranged inside the washer, said cage being movable up and down together with the doors, as will be described later.
  • a rotatable floor 7 is shown in the interior of the housing 1, and spraying nozzles 5, 6 are shown on inner walls of the housing, one spraying nozzle 5 being fixedly mounted, the other spray ⁇ ing nozzle 6 being movable, as will be explained more fully below.
  • two vertical rows of nozzles are provided for the final flushing, cf. the reference nu ⁇ meral 37.
  • No further washing nozzles of the same type as the spraying nozzles 5 and 6 are shown inside the hous ⁇ ing. 8 designates a through shaft which connects a ro ⁇ tatable floor with a motor (not shown in fig. 1), which is mounted in the upper part of the housing 1.
  • a compart ⁇ ment for the storage of detergents, electric motors and other control is provided to the left in fig. 1.
  • Fig. 2 shows the individual constructional parts of the washer of the invention in detail. As will be seen in fig. 2, it is indicated by arrows 10 that the cage 4 can rotate together with the floor 7. The rotation is pro ⁇ vided by a motor 12, which is capable of transferring a rotary movement to the cage via drive belts 19, 20, 21 and pulleys 17, 18 and 22. This rotary movement may be controlled at different speeds, as will be explained more fully below.
  • Fig. 2 additionally shows pumps 14 and 16 which are arranged partly for pumping water into the washing nozzles 5, 6, cf. fig. 1. The pump 11 is the fi- nal flushing pump and is only in operation during the flushing period.
  • Fig. 2 shows the individual constructional parts of the washer of the invention in detail. As will be seen in fig. 2, it is indicated by arrows 10 that the cage 4 can rotate together with the floor 7. The rotation is pro ⁇ vided by a motor 12, which is capable of transferring a rotary movement to the cage via drive belts 19, 20, 21
  • FIG. 2 moreover shows a ventilator 30 which is adapted to suck vapour out of the machine during the drying process.
  • Fig. 2 finally shows a door motor and a gear 13.
  • Fig. 3 shows in greater detail how catering carts to be washed in the washer are placed m the cage 4.
  • two catering carts 23, 24 are shown, one of which is twice as large as the other.
  • the catering carts 23, 24 are secured in the cage 4 by holding means which, as shown m fig. 4, consist of a slidable rod 25 and hooks 27. With the catering carts 23, 24 placed in ⁇ side the cage, the hooks 27 can engage over edges 19 on the catering carts. It is ensured in this manner that the carts do not rest against the wire net, which might have as a result that doors (not shown) of the catering carts could not be positively closed, and consequently that they could not be washed and dried on the rear side.
  • spacers 28 are provided internally on two sides of the cage, and these spacers ensure that the carts cannot rest against the two walls of the cage.
  • the washing process can now be initiated, and it consists partly of a wash with detergent, a flush with rinse aid, and partly of a subsequent drying with centrifugation and venting.
  • the wash with detergent takes place at a first speed of rotation, and then the carts are accelerated to about 50-100 rpm for throwing excess soap, debris and reading matter out of the carts. This is followed by de ⁇ celeration to a first speed and final flushing with the pump 11. Finally, drying is performed where the speed of rotation is increased, and vapour is simultaneously sucked out of the machine. During the first flushing any objects left in the machine might be thrown out, but this will not have disastrous results, since such objects will be confined within the cage 4.
  • figs. 5A-5F how the circular movement of the spraying nozzles 6 cooperates with the rotation of the catering carts 23.
  • a net 29 from the spraying nozzle 6 and the catering cart 23 in a first position are shown.
  • the jet 29 now sweeps one side of the catering cart 23 which has correspondingly moved a distance clockwise.
  • figs. 5C-5F how the net can reach all sides inside the catering cart and clean the cart effectively, as the rotary movement to and fro of the spraying nozzle 6 is adapted to the rotary speed of the catering cart 23.
  • Fig. 6 schematically shows partly in sectional view how the various components are arranged inside the housing 1 in the washer.
  • the figure e.g. shows the motor 12 which drives the centrifugation, the ventilator 30 which sucks vapour out in order to provide rapid drying, and the pumps 11, 14 and 15.
  • the hous ⁇ ing 1 of the washer is recessed in a floor which is shown in detail in fig. 7, and in which the washer is arranged in a depression 36.
  • the base 32 and adjoining sides 36 of the washer are placed on two rings 34, 35, of which the outer ring 35 has a smaller mside diameter than the in ⁇ ner ring 34.
  • the ring 35 is adapted to support the floor in the machine 32, while the ring 34 is adapted to absorb transverse vibrations from the machine.
  • the two rings 34, 35 consist of soft polyurethane foam 34 and somewhat more rigid polyurethane foam 35, respectively.
  • the housing 1 itself is made of stainless steel plate, with foam plastics sandwiched therebetween, which additionally ensures that the sound level is kept at even very low values.
  • This sandwich structure thus ensures optimum strength for the entire machine, without this resulting in a very great weight, and thereby optimum heat and noise insulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Handcart (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Drying Of Solid Materials (AREA)
  • Washing And Drying Of Tableware (AREA)

Abstract

Cette invention concerne un dispositif permettant de laver, de rincer et de sécher des objets tels que des chariots de restauration (23, 24) utilisés pour transporter des repas depuis une cuisine vers un avion ou vice-versa. A cette fin, les chariots sont disposés à l'intérieur d'une cage (4) se trouvant dans un système de lavage, système dans lequel le lavage et le séchage se font par effet centrifuge. Afin que ce traitement par effet centrifuge se fasse à la plus grande vitesse possible et avec une sécurité maximale, les chariots sont placés dans une cage (4) de préférence en forme de boîte, ladite cage étant ensuite soumise au traitement centrifuge avec les chariots. Le système de lavage comprend deux portes (2, 3), l'une servant à le remplir de chariots de restauration sales, et l'autre à faire sortir de la machine les chariots nettoyés. Ce système possède une grande efficacité et permet à la machine de fonctionner de manière quasiment continue. Lors du rinçage à l'intérieur du système de lavage, des buses de lavage (6) disposées verticalement se déplacent selon un plan horizontal de manière à fonctionner en synchronisation avec le mouvement de rotation. Cette invention permet donc d'obtenir un système de lavage rapide et d'une grande efficacité tout en observant les exigences strictes en matière de sécurité et de nettoyage.
PCT/DK1997/000181 1996-04-24 1997-04-23 Dispositif permettant de laver, de rincer et de secher des objets tel que des chariots de restauration utilises a bord d'avions WO1997039839A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69700666T DE69700666T2 (de) 1996-04-24 1997-04-23 Vorrichtung zum waschen, spülen und trocknen von gegenständen wie gaststättenwagen zur verwendung an bord eines flugzeuges
EP97918071A EP0898501B1 (fr) 1996-04-24 1997-04-23 Dispositif permettant de laver, de rincer et de secher des objets tel que des chariots de restauration utilises a bord d'avions
AU26341/97A AU2634197A (en) 1996-04-24 1997-04-23 A device for washing, flushing and drying objects, such as catering carts, for use on board aircraft

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK199600485A DK173019B1 (da) 1996-04-24 1996-04-24 Anordning til afvaskning, skylning og tørring af genstande, såsom cateringvogne til anvendelse om bord på flyvemaskiner
DK0485/96 1996-04-24

Publications (1)

Publication Number Publication Date
WO1997039839A1 true WO1997039839A1 (fr) 1997-10-30

Family

ID=8094099

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1997/000181 WO1997039839A1 (fr) 1996-04-24 1997-04-23 Dispositif permettant de laver, de rincer et de secher des objets tel que des chariots de restauration utilises a bord d'avions

Country Status (7)

Country Link
EP (1) EP0898501B1 (fr)
AT (1) ATE185715T1 (fr)
AU (1) AU2634197A (fr)
DE (1) DE69700666T2 (fr)
DK (1) DK173019B1 (fr)
ES (1) ES2138458T3 (fr)
WO (1) WO1997039839A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6244278B1 (en) 1998-04-30 2001-06-12 Ken Maskinfabrik Device for cleaning transport carts
EP1172156A1 (fr) * 2000-07-12 2002-01-16 Bodson Industries Machine à laver les bacs de type alimentaire
EP1223397A1 (fr) * 2001-01-11 2002-07-17 Valiant Corporation Essoreuse centrifuge de pièces industrielles
EP1316369A2 (fr) * 2001-11-29 2003-06-04 Valiant Corporation Nettoyer et sécher des pièces industrielles
EP2008729A2 (fr) * 2007-06-29 2008-12-31 Teknox S.R.L. Unipersonale Dispositif pour enlever les vapeurs dans une machine pour nettoyer des pièces mécaniques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868596A (en) * 1955-02-04 1959-01-13 Rattigan A Frieda Valve seal and mechanism
US2850042A (en) * 1955-02-04 1958-09-02 Strazdins Atis Control device for twin valves
DK201370239A1 (en) 2013-04-30 2014-10-31 Semi Stål As Container drying device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239786A (en) * 1967-10-30 1971-07-21 Ind Washing Machine Corp Method and apparatus for washing industrial articles
DE2431895A1 (de) * 1974-07-03 1976-01-15 Fegu Bosch Kg Reinigungsmaschine fuer maschinenteile
DE2647356A1 (de) * 1975-11-12 1977-05-26 Hildebrand Ed Ing Ag Reinigungsmaschine
US4741351A (en) * 1985-03-07 1988-05-03 The Modern Auto Recycling Techniques Corporation Parts washer
DE4215614A1 (de) * 1992-05-12 1993-11-18 Premark Feg Corp Vorrichtung und Verfahren zum Reinigen von Wagen zum Transport von Speisetabletts oder dergleichen sowie Wagen hierfür
WO1993026035A1 (fr) * 1992-06-15 1993-12-23 Semitool, Inc. Appareil de nettoyage par centrifugation de supports de tranches

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239786A (en) * 1967-10-30 1971-07-21 Ind Washing Machine Corp Method and apparatus for washing industrial articles
DE2431895A1 (de) * 1974-07-03 1976-01-15 Fegu Bosch Kg Reinigungsmaschine fuer maschinenteile
DE2647356A1 (de) * 1975-11-12 1977-05-26 Hildebrand Ed Ing Ag Reinigungsmaschine
US4741351A (en) * 1985-03-07 1988-05-03 The Modern Auto Recycling Techniques Corporation Parts washer
DE4215614A1 (de) * 1992-05-12 1993-11-18 Premark Feg Corp Vorrichtung und Verfahren zum Reinigen von Wagen zum Transport von Speisetabletts oder dergleichen sowie Wagen hierfür
WO1993026035A1 (fr) * 1992-06-15 1993-12-23 Semitool, Inc. Appareil de nettoyage par centrifugation de supports de tranches

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6244278B1 (en) 1998-04-30 2001-06-12 Ken Maskinfabrik Device for cleaning transport carts
EP1172156A1 (fr) * 2000-07-12 2002-01-16 Bodson Industries Machine à laver les bacs de type alimentaire
EP1223397A1 (fr) * 2001-01-11 2002-07-17 Valiant Corporation Essoreuse centrifuge de pièces industrielles
EP1316369A2 (fr) * 2001-11-29 2003-06-04 Valiant Corporation Nettoyer et sécher des pièces industrielles
EP1316369A3 (fr) * 2001-11-29 2004-02-11 Valiant Corporation Nettoyer et sécher des pièces industrielles
EP2008729A2 (fr) * 2007-06-29 2008-12-31 Teknox S.R.L. Unipersonale Dispositif pour enlever les vapeurs dans une machine pour nettoyer des pièces mécaniques
EP2008729A3 (fr) * 2007-06-29 2013-06-12 Teknox S.R.L. Unipersonale Dispositif pour enlever les vapeurs dans une machine pour nettoyer des pièces mécaniques

Also Published As

Publication number Publication date
ATE185715T1 (de) 1999-11-15
AU2634197A (en) 1997-11-12
DE69700666T2 (de) 2000-02-10
DK48596A (da) 1997-10-25
EP0898501B1 (fr) 1999-10-20
EP0898501A1 (fr) 1999-03-03
DK173019B1 (da) 1999-11-15
DE69700666D1 (de) 1999-11-25
ES2138458T3 (es) 2000-01-01

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