US3608339A - Antifoam seal for washing machines - Google Patents

Antifoam seal for washing machines Download PDF

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Publication number
US3608339A
US3608339A US841095A US3608339DA US3608339A US 3608339 A US3608339 A US 3608339A US 841095 A US841095 A US 841095A US 3608339D A US3608339D A US 3608339DA US 3608339 A US3608339 A US 3608339A
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US
United States
Prior art keywords
tank
water
foam
seal
tube
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
US841095A
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English (en)
Inventor
Lamberto Mazza
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.)
Industrie Zanussi SpA
Original Assignee
Industrie Zanussi 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 Industrie Zanussi SpA filed Critical Industrie Zanussi SpA
Application granted granted Critical
Publication of US3608339A publication Critical patent/US3608339A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/06—Arrangements for preventing or destroying scum
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements

Definitions

  • This invention relates to a device which impedes excess foam formed for any reason during operation of a washing machine from flowing out of the housing of the washing machine and the obvious disadvantages arising therefrom.
  • the first solution attempted for avoiding this disadvantage was that of hermetically sealing the wash tank.
  • This invention resolves the problems illustrated briefly above and in particular permits the use of a tank sealed hermetically during washing, by which the outflow of foam is impeded and at the same time it is not subject to the disadvantages mentioned under paragraphs 1 and 2 above set forth.
  • a washing machine consisting of a wash tank provided with a sealing cover and conventional means with a line interrupter for the introduction of water with or without detergent into the tank, comprising gasket means for the hermetic sealing of the cover; uni-directional valved means downstream of the line interrupter which opens under the action of feed water; tubular means substantially vertical and adjacent to the tank, with the tubular means being open at its lower end and in free communication with the inside of the tank, and connected at its upper end the atmosphere and syphon means having a first extremity in free communication with the internal space of the wash tank and situated above the highest level attainable by the water in the tank and the second extremity arranged inside the tubular means and below the normal level of water in the tank.
  • the wash tank is substantially hermetically sealed and the only open communication is that by way of the syphon means which, however, has its second extremity immersed in the water present in the substantially vertical tube, according to the principle of communicating vessels, because of which the foam which eventually tends to overflow finds itself caused to take a certain path and, in order to flow to the outside, has to pass through the water in which it dissolves.
  • FIG. 1 is a lateral sectional view of a washing machine including the device according to this invention
  • FIG. 2 is a back view, partially in section, of the machine shown in FIG. 1;
  • FIG. 3 is an enlarged detailed view of the device ac cording to the invention.
  • a washing machine which comprises an external housing 10 in which there is a wash tank 11 comprising an upper opening closed by a cover 12 and a bottom discharge opening 13 in communication with a discharge pump 14 having a tube 15 for discharging to the outside.
  • a wash basket 16 which rotates around a shaft 17 driven by a motor 18 by way of a conventional transmission mechanism.
  • a feed pipe 19 is provided for loading with wash water, which receives water from a tube 20 and sends the water by way of the so called line interrupter indicated by a space 21, against a non-return valve 22 loaded by a spring 23, which opens in order to permit the entry of water into a tank 24 for distribution of the detergent, from which the water then enters the Wash tank 11 by way of a pipe 25.
  • a feed pipe 26 also fed by the tube 20 is provided for loading the pre-wash water, to which the detergent is introduced directly together with the washing.
  • a tube 27 rises from the discharge opening 13 of the tank 11 and is substantially vertical, at least at its highest part. The lower end of the tube 27 is in free communication with the tank 11, because of which water attains the same level in the tube 27 during the wash cycle as in the tank '11.
  • the upper end of the tube 27 opens into a free chamber, of which one part is constituted by the line interrupter 21, and which communicates with the outside by way of a discharge pipe 28 for discharge of possible overflowing water.
  • a hole is formed at a suitable height in the side of the tank 11 in which a tube or syphon 2 9 is sealed, whose extremity 30 is open towards the tank 11 and its other extremity 3-1 is positioned inside the tube 27 so that when water arrives at its maximum level 32 in 'the tank 11' and'hence in the tube 27, the extremity 31 is below the level 32 by a distance denoted H.
  • the approximate length of the distance H for practical applications is about 60 mm.
  • the cover 12 is provided with sealing gaskets 3 3 which guarantee hermetic sealing of the tank 11 during the wash c'ycle.
  • the tank 11 is hermetically sealed and the only passage open is that through the syphon 29 which is obligatory.
  • the foam is compelled to pass through the water column of height H in the tube 27 in order to flow out, and consequently it dissolves in the water.
  • tubular means substantially vertical and adjacent to the tank, said tubular means being open at its lower end an in free communication with the inside of said tank at the bottom thereof, and connected at its upper end to the atmosphere and syphon means having a first extremity in free communication with the internal space of the wash tank and situated above the highest level attainable by the water in the tank and a second extremity arranged inside said tubular means and below the normal level of water in said tank.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
US841095A 1968-10-02 1969-07-11 Antifoam seal for washing machines Expired - Lifetime US3608339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2197968 1968-10-02

Publications (1)

Publication Number Publication Date
US3608339A true US3608339A (en) 1971-09-28

Family

ID=11189684

Family Applications (1)

Application Number Title Priority Date Filing Date
US841095A Expired - Lifetime US3608339A (en) 1968-10-02 1969-07-11 Antifoam seal for washing machines

Country Status (9)

Country Link
US (1) US3608339A (de)
JP (1) JPS498544B1 (de)
AT (1) AT291902B (de)
DE (1) DE1945428C3 (de)
ES (1) ES369968A1 (de)
FR (1) FR2019635A1 (de)
GB (1) GB1245874A (de)
NL (1) NL6911528A (de)
YU (1) YU32023B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6105403A (en) * 1999-01-14 2000-08-22 Whirlpool Corporation Lid seal for an automatic washer
US20040040344A1 (en) * 2002-08-30 2004-03-04 Hiroko Minayoshi Drum type washing machine
US20040187528A1 (en) * 2002-12-30 2004-09-30 No Yang Hwan Drum-type washing machine
US20040194514A1 (en) * 2002-12-30 2004-10-07 No Yang Hwan Drum-type washing machine
WO2007099112A1 (en) * 2006-03-01 2007-09-07 Arcelik Anonim Sirketi A washing machine
CN106350968A (zh) * 2016-10-17 2017-01-25 珠海格力电器股份有限公司 防止泡沫溢出的方法及系统
EP3719195A1 (de) * 2019-04-05 2020-10-07 Electrolux Appliances Aktiebolag Topladerwaschmaschine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878082A (en) * 1974-02-19 1975-04-15 Basf Wyandotte Corp Diaphragm cell including means for retaining a preformed sheet diaphragm against the cathode
ES2066675B1 (es) * 1992-07-21 1997-04-01 Mayc Sa Mejoras en los dispositivos antirrebosamiento de agua en cubas de lavadoras.
US10457437B2 (en) 2006-03-06 2019-10-29 Plastipak Packaging, Inc. Lightweight plastic container and preform
US8857637B2 (en) 2006-03-06 2014-10-14 Plastipak Packaging, Inc. Lightweight plastic container and preform

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6105403A (en) * 1999-01-14 2000-08-22 Whirlpool Corporation Lid seal for an automatic washer
AU749986B2 (en) * 1999-01-14 2002-07-04 Whirlpool Corporation Lid seal for an automatic washer
US8370980B2 (en) 2002-08-30 2013-02-12 Panasonic Corporation Drum type washing machine
US20070289612A1 (en) * 2002-08-30 2007-12-20 Matsushita Electric Industrial Co., Ltd. Drum type washing machine
US20040040344A1 (en) * 2002-08-30 2004-03-04 Hiroko Minayoshi Drum type washing machine
US20040187528A1 (en) * 2002-12-30 2004-09-30 No Yang Hwan Drum-type washing machine
US20040194514A1 (en) * 2002-12-30 2004-10-07 No Yang Hwan Drum-type washing machine
US7316133B2 (en) 2002-12-30 2008-01-08 Lg Electronics Inc. Drum-type washing machine
US7325423B2 (en) * 2002-12-30 2008-02-05 Lg Electronics Inc. Drum-type washing machine
WO2007099112A1 (en) * 2006-03-01 2007-09-07 Arcelik Anonim Sirketi A washing machine
CN106350968A (zh) * 2016-10-17 2017-01-25 珠海格力电器股份有限公司 防止泡沫溢出的方法及系统
CN106350968B (zh) * 2016-10-17 2019-01-08 珠海格力电器股份有限公司 防止泡沫溢出的方法及系统
EP3719195A1 (de) * 2019-04-05 2020-10-07 Electrolux Appliances Aktiebolag Topladerwaschmaschine

Also Published As

Publication number Publication date
YU196969A (en) 1973-08-31
ES369968A1 (es) 1972-03-16
DE1945428C3 (de) 1978-03-30
YU32023B (en) 1974-02-28
GB1245874A (en) 1971-09-08
NL6911528A (de) 1970-04-06
FR2019635A1 (de) 1970-07-03
AT291902B (de) 1971-08-10
DE1945428B2 (de) 1977-08-04
DE1945428A1 (de) 1970-04-09
JPS498544B1 (de) 1974-02-27

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