US3577752A - Laundry apparatus - Google Patents

Laundry apparatus Download PDF

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Publication number
US3577752A
US3577752A US775088A US3577752DA US3577752A US 3577752 A US3577752 A US 3577752A US 775088 A US775088 A US 775088A US 3577752D A US3577752D A US 3577752DA US 3577752 A US3577752 A US 3577752A
Authority
US
United States
Prior art keywords
casing
laundry
room
receiving room
air 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.)
Expired - Lifetime
Application number
US775088A
Other languages
English (en)
Inventor
Max Hertig
Peter J Meier
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.)
GA Braun Inc
Original Assignee
GA Braun Inc
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 GA Braun Inc filed Critical GA Braun Inc
Application granted granted Critical
Publication of US3577752A publication Critical patent/US3577752A/en
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
    • D06F95/00—Laundry systems or arrangements of apparatus or machines; Mobile laundries 
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/26—Textiles, e.g. towels, beds, cloths

Definitions

  • ABSTRACT lnstitutional laundry equipment including [54] LAUNDRY APPARATUS laundry vvashing and extracting apparatus having a substan- 4 Claims, 1 Drawing Fig tlally airtight casing, with separate loading and unloading doors, disposed in a partition dividing a laundry area into a U-S-
  • the washing machine casing shell 52 is provided with a duct 1 1 LAUNDRY APPARATUS
  • This invention relates to laundry apparatus, and more. particularly to apparatus of the institutional type for use in hospitals, ,hotels, and the like, where cross infection is to be room and a clean laundry room, the apparatus having its loading door in the receiving-room and its unloading door in the cleanroom. Additionally the invention includes apparatus for scavenging the washing apparatus with outside air, and maintaining the apparatus and receiving room subatmospheric, as respects the clean room at all times, and door interlocks to prevent the opening of either unloading or loading door except when the other is closed. It will be understood that the laundry processed in the apparatus will be subjected to decontaminants to prevent the transmission of bacteria such as would be capable of cross infection, through the laundry being processed. I
  • FIG. 1 is an elevational view of the unloading side of a washing and extraction apparatus
  • FIG. 2 is a sectional view taken through the'washing and ex- .traction apparatus substantially'on the line 2-2 of FIG. 1.
  • a commercial size washing machine of the tumbler centrifugal extraction type with its exterior casing end wall forming a part of partition 22, which divides the laundry work space into two separate rooms isolated from each other.
  • the soiled laundry is delivered to the room 24 which is maintained at a subatmospheric pressure, and'clean laundry is removed from the washing machine directly into the room 26 which is maintained at atmospheric pressure.
  • the washing machine is pro- 1 vided with a soiled laundryloading door 28 and a clean laundry unloading door 30, the latter being in what may be 32 leading to a fresh air supply, at atmospheric pressure, and the cabinet also may be provided with a relief duct 34 preferably of a cross section larger than duct 32, and open to the room 24, the ducts 32 and 34 being open at all times.
  • An exhaust fan 40 of sufiicient capacity maintains subatmospheric pressure in room 24. It will be understood that only at the conclusion of a complete washing and extraction cycle, will the door 30 be opened for removal of washed and damp dry laundry from the washing machine tumbler and extractor drum.
  • the room 24 is maintained at a pressure differential lower than room 26 by an exhaust fan 40 delivering air from room 24 to the outside.
  • a suitable air filtration unit 42 associated with the fan 40 isprovided. Throughsuch means, the pressure in room 24, and within casing 52 is maintained somewhat below atmospheric pressure and below the atmospheric pressure in the clean room 26.
  • the wash and extraction drum indicated at 50 is contained in the surrounding stationary casing or shell 52 of which the wall 20 is a part.
  • the shell 52 is capable of containing and holding wash orrinse water, in which the wash drum rotates and is partially immersed.
  • Such shell is provided with a dump valve 55 to drain. The shell, when empty, with the dump valve open is open to the subatmospheric pressure in the room 24.
  • the shell Since the shell is open to room 24 at all times through the'dump valve, except during actual wash or rinse when the valve is closed, and the door 30 is locked except following extraction at the end of the wash and extraction cycle, it may besufficient to eliminate or cap the duct 34, since long prior to opening the door 30 to remove the clean laundry, the casing shell will be subjected to subatmospheric pressure during extraction through the open drain valve, and
  • the size of the duct 32 will be such in relation to the dump valve 55, or the dump valve aided by the exhaust duct 34, as to provide enough restriction to assure subatmospheric pressure within the shell 52.
  • Entrance to the room 24 will be through a passageway having interlocked doors, as is understood in the art, so as to prevent escape of contaminated air, and to at all times preserve the subatmospheric pressure in room 24.
  • Room 26 may be suitably provided with 'an entrance controlled by interlocked doors and supplied with filtered air at atmospheric pressure or slightly above if desired, to protect the room and clean laundry unloaded therein from contaminated air, which might otherwise enter the room from the surrounding atmosphere.
  • port means comprises an air duct of greater cross section than said outside airduct.
  • the port means comprises a water dump valve for the casing communicating with the receiving room during the extracting operations of the apparatus.
  • port means comprises both an air duct open to the receiving room and a ing flow is maintained through the washing machine casing 52, the extracting operations of the apparatus.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Residential Or Office Buildings (AREA)
US775088A 1968-11-12 1968-11-12 Laundry apparatus Expired - Lifetime US3577752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77508868A 1968-11-12 1968-11-12

Publications (1)

Publication Number Publication Date
US3577752A true US3577752A (en) 1971-05-04

Family

ID=25103295

Family Applications (1)

Application Number Title Priority Date Filing Date
US775088A Expired - Lifetime US3577752A (en) 1968-11-12 1968-11-12 Laundry apparatus

Country Status (4)

Country Link
US (1) US3577752A (enrdf_load_stackoverflow)
DE (1) DE1951085B2 (enrdf_load_stackoverflow)
GB (1) GB1238108A (enrdf_load_stackoverflow)
NL (1) NL6915630A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920768A (en) * 1989-06-20 1990-05-01 Gpl Partnership Vapor retaining clothes transfer system
US4972688A (en) * 1989-06-20 1990-11-27 Gpl Partnership Vapor retaining clothes transfer system
US5003794A (en) * 1990-03-06 1991-04-02 Griffis Steven C Method and means for laundering contaminated clothing
GB2251865A (en) * 1991-01-18 1992-07-22 Griffis Steven C Method and means for laundering contaminated clothing
US6082149A (en) * 1998-10-06 2000-07-04 Advanced Micro Devices, Inc. Chemical washing system including a chemical dispensing system and suitable for use within a semiconductor fabrication clean room
US6357069B1 (en) * 1998-10-29 2002-03-19 Electrolux Systemes De Blanchisserie Method and barrier laundry installation and apparatus for sealed transfer of laundry useable in said installation
EP3249095A1 (de) * 2016-05-23 2017-11-29 Gottlob Stahl Wäschereimaschinenbau GmbH Waschvorrichtung und verfahren zum reinhalten eines geschlossenen reinraums

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406919A1 (de) * 1984-02-25 1985-09-05 Miele & Cie GmbH & Co, 4830 Gütersloh Desinfektionswaschmaschine mit reiner und unreiner seite

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318122A (en) * 1966-07-15 1967-05-09 Pellerin Corp Milnor Cleansing apparatus for use in hospitals

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318122A (en) * 1966-07-15 1967-05-09 Pellerin Corp Milnor Cleansing apparatus for use in hospitals

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920768A (en) * 1989-06-20 1990-05-01 Gpl Partnership Vapor retaining clothes transfer system
US4972688A (en) * 1989-06-20 1990-11-27 Gpl Partnership Vapor retaining clothes transfer system
US5003794A (en) * 1990-03-06 1991-04-02 Griffis Steven C Method and means for laundering contaminated clothing
GB2251865A (en) * 1991-01-18 1992-07-22 Griffis Steven C Method and means for laundering contaminated clothing
US6082149A (en) * 1998-10-06 2000-07-04 Advanced Micro Devices, Inc. Chemical washing system including a chemical dispensing system and suitable for use within a semiconductor fabrication clean room
US6357069B1 (en) * 1998-10-29 2002-03-19 Electrolux Systemes De Blanchisserie Method and barrier laundry installation and apparatus for sealed transfer of laundry useable in said installation
EP3249095A1 (de) * 2016-05-23 2017-11-29 Gottlob Stahl Wäschereimaschinenbau GmbH Waschvorrichtung und verfahren zum reinhalten eines geschlossenen reinraums
CN107413804A (zh) * 2016-05-23 2017-12-01 哥特勒博·斯塔尔洗涤机械有限公司 洗涤设备和用于使封闭的净化室保持清洁的方法

Also Published As

Publication number Publication date
DE1951085B2 (de) 1974-01-31
NL6915630A (enrdf_load_stackoverflow) 1970-05-14
DE1951085C3 (enrdf_load_stackoverflow) 1974-09-05
GB1238108A (enrdf_load_stackoverflow) 1971-07-07

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