US20060112736A1 - Plastic washing fluid container for a washing machine - Google Patents

Plastic washing fluid container for a washing machine Download PDF

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Publication number
US20060112736A1
US20060112736A1 US11/291,472 US29147205A US2006112736A1 US 20060112736 A1 US20060112736 A1 US 20060112736A1 US 29147205 A US29147205 A US 29147205A US 2006112736 A1 US2006112736 A1 US 2006112736A1
Authority
US
United States
Prior art keywords
washing fluid
fluid container
section
air trap
cap
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.)
Abandoned
Application number
US11/291,472
Other languages
English (en)
Inventor
Egon Brockschmidt
Matthias Hollenhorst
Antje Nieder
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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
Priority claimed from DE102004057943A external-priority patent/DE102004057943B3/de
Priority claimed from DE102004057942A external-priority patent/DE102004057942B3/de
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Assigned to MIELE & CIE. KG. reassignment MIELE & CIE. KG. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROCKSCHMIDT, EGON, HOLLENHORST, MATTHIAS, NIEDER, ANTJE
Publication of US20060112736A1 publication Critical patent/US20060112736A1/en
Abandoned 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • 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
    • D06F39/087—Water level measuring or regulating devices

Definitions

  • the invention in general, relates to a plastic washing fluid container, hereafter sometimes referred to as a tub, for a washing machine and, more particularly, to a tub surrounding a cylindrical drum each end of which is provided with a closure cap at least one of which has an air trap for measuring the washing fluid level and which at its lower and upper ends is respectively provided with an opening and a nipple for receiving a hose.
  • a plastic washing fluid container hereafter sometimes referred to as a tub
  • a tub for a washing machine and, more particularly, to a tub surrounding a cylindrical drum each end of which is provided with a closure cap at least one of which has an air trap for measuring the washing fluid level and which at its lower and upper ends is respectively provided with an opening and a nipple for receiving a hose.
  • U.S. Pat. No. 5,115,651 to Nukaga et al. discloses an air trap formed on the cap of the washing fluid tub.
  • the housing is arranged at the exterior of the washing fluid tub and, therefore, necessitates additional means for connection with the internal chamber of the washing fluid tub.
  • the air trap may be structured at the cap of the washing fluid container such that it may be integrally formed by an injection molding tool.
  • the invention provides for an air trap in a plastic washing fluid container of the kind referred to supra in which the air trap with its downwardly open housing and integral opening nipple is integrally formed in the wall of the washing fluid container cap in penetrating relationship therewith.
  • the downwardly open housing with its attached opening nipple is an integral component of the cap of the washing fluid tub in penetrating relationship therewith such that the latter and the air trap are of unitary structure.
  • This arrangement allows the air trap housing to be integrated into an injection molding tool so that both the air trap and the washing fluid container cap may be molded in a single operation. The result is an air trap which is fully integrated in the cap of the washing fluid container and which avoids the need for additional caps and seals or gaskets in the cap of the washing fluid container.
  • the complexity of any alteration of the air trap in terms of tools otherwise required is minimized or at least reduced, because forming the hollow body of the air trap requires but one core in the injection molding tool for the cap of the washing fluid container.
  • the volume and the cross-section of the opening may be adjusted to existing air traps and significant changes or conversion procedures can be avoided.
  • the housing with its opening nipple occupies a partial section of the outer wall surface of the washing fluid container cap with the opening nipple being formed to extend upwardly at an acute angle relative to the outer wall surface of the washing fluid container cap. Accordingly, the opening nipple is not only of a compact structure but it also is easily accessible for attaching a hose.
  • the housing is structured such that the housing of the air trap and its downwardly open section occupy a partial section of the inner wall surface of the washing fluid container cap, with the section of the opening being preferably also formed at a downwardly directed acute angle at the surface of the inner wall. In this manner it is possible to provide two mold discharge directions, one being disposed laterally and the other one in the direction of the angle of the air trap.
  • the partial section of the surface of the inner wall forming the housing of the air trap is offset in a step-like manner in order to enlarge the cross-section of the opening.
  • the step is inclined which advantageously affects the mold discharge process.
  • the walls forming the housing are disposed parallel to each other which also affects the mold discharge process in an advantageous manner.
  • the opening nipple for the hose is formed to extend into the interior of the housing.
  • the sleeve section of the nipple is provided with a collar or shoulder for arresting the hose.
  • the housing of the air trap is formed of a lower housing section and an upper housing section with the downwardly open lower housing section being integrally formed in, and penetrating through, the wall of the washing fluid container cap.
  • the internal chamber of the air trap is thus accessible from the exterior because the upper housing section is mounted for movement relative to the lower housing section at the outer surface of the washing fluid container cap. Accordingly, the interior of the housing of the air trap is easily accessible for cleaning.
  • the upper housing section is integrally connected to the lower housing section by means of a hinge of flexible film or foil which makes possible the fabrication of both housing sections in one injection molding tool.
  • the upper housing section is pivotally connected to the lower housing section by the foil hinge so that the cap of the washing fluid container and the two housing sections may be molded in one piece.
  • the lower housing section occupies a partial section of the surface of the outer wall of the cap of the washing fluid container with the partial section being advantageously formed to extend upwardly from the outer surface at an acute angle in the manner of a wedge resulting, relative to the outer surface, in an opening of rectangular or square cross-section.
  • the partial section formed in the wall may be useful so to shape the partial section formed in the wall to yield an opening of oval, elliptical or circular cross-section.
  • the downwardly open section of the lower housing section is offset in a step-like manner for enlarging the opening area, i.e. the water-inlet area.
  • the step is inclined which facilitates its configuration.
  • the lateral walls forming the housing are disposed parallel to each other which results in a rectangular channel-shaped housing, i.e. the internal chamber has a rectangular profile.
  • the upper section is provided with a circumscribing groove for receiving a gasket.
  • For opening or closing the upper housing section its outer wall is provided with lugs for securing it in a snap-like manner.
  • Outwardly extending ribs are formed in the lateral walls of the lower housing section which occupies a partial section of the surface of the inner wall of the washing fluid container cap. Within the ribs there are provided bores or openings for receiving the lugs.
  • the edges of the ribs are beveled or slanted which results in an incline.
  • the lugs thereof will initially engage the inclines, and the inclines will cause the ribs to be spread apart so that the lugs can more easily move relative to the bores.
  • FIG. 1 is a sectional presentation of a first embodiment of an air trap inserted in a cap of a washing fluid container;
  • FIG. 2 is a sectional presentation of a second embodiment of an air trap inserted in a cap of a washing fluid container;
  • FIG. 3 is a detailed view of an opening nipple of the embodiment shown in FIG. 2 ;
  • FIG. 4 , 5 depict an embodiment of an inserted air trap with a removable upper section
  • FIG. 6 is a schematic presentation of a washing machine.
  • FIG. 6 is a schematic lateral sectional view showing a washing machine 30 provided with a washing fluid container 1 .
  • the washing fluid container 1 consist of a cylindrically structured receptacle 2 which surrounds a drum 31 .
  • the cylindrical receptacle 2 is closed by at least one front wall or cap 3 .
  • FIGS. 1 and 2 depict a section of a washing fluid container 1 made of plastic. At each end of the receptacle 2 there is provided a structured washing fluid container cap 3 . As may be seen in FIGS. 1 and 2 , one of the washing fluid container caps 3 , which may have been retrofitted to the receptacle 2 , is provided with an air trap 4 for measuring the level of washing fluid.
  • the air trap 4 has a housing 5 which opens in a downward direction and which at its upper end is provided with an opening nipple 6 for a measuring hose (not shown).
  • the hose is connected to a gage (not shown) or the like for deriving a measure of the level of washing fluid in the container as a function of the pneumatic pressure within the air trap 4 .
  • the downwardly open housing 5 and its integral opening nipple 6 are fitted into the washing fluid container cap 3 , i.e. the cap 3 and the air trap 4 are fabricated as a one-piece molded component.
  • the fully integrated air trap 4 can be fabricated by a single mold tool with only one additional core being required for molding the section of the hollow body of the housing 5 .
  • the corresponding mold discharge directions have been indicated by arrows 13 , 14 and 15 .
  • FIG. 1 In the embodiment of FIG. 1 , two cores are required for molding the housing 5 , the first core being indicated by mold discharge direction 13 and the second core being indicated by mold discharge direction 15 .
  • the mold discharge direction 14 of the molding tool is away from the cap 3 .
  • the embodiment according to FIG. 2 requires but one core for molding the air trap housing 5 . It is moved out of the lower section of the bore 8 in the direction of arrow 13 .
  • the housing 5 with its opening nipple 6 constitutes a part of the surface 7 of the outer wall of the washing fluid container cap 3 , the opening nipple 6 being preferably molded to extend in an upward direction and at an acute angle relative to the surface 7 of the outer wall.
  • This area is formed by the single core, the arrow 15 representing it having been indicated to point in an upward direction.
  • the other core serves to form the housing 5 with its downwardly opening section 8 which constitutes part of the inner wall surface 9 of the washing fluid container cap 3 .
  • the area 8 surrounding the lower opening of the air trap 4 extends downwardly at an acute angle relative to the inner wall 9 .
  • FIGS. 1 and 2 also show the partial section of the inner wall surface 9 within which the housing 5 is formed to be offset in a step-like manner so as to enlarge the section 8 of the opening. Step 10 is inclined to provide for a clean discharge from the mold.
  • the walls 7 and 9 which form the housing 5 are disposed parallel to each other.
  • the opening nipple 6 may be molded by means of a single core within the molding tool. During manufacture the core is withdrawn in the discharge direction 13 from the inner chamber of the housing 5 .
  • FIG. 3 is a detailed view of the opening nipple 6 showing a sealing shoulder 12 formed in the sleeve section 11 of the inwardly directed opening nipple 6 .
  • the shoulder 12 effectively secures or seals any hose (not shown) inserted into the nipple 6 .
  • an air trap 4 in accordance with FIGS. 1 and 2 are such as not to require any additional components. Also, when modifying the pressure indicating air trap, there is no need for changing the molding tool for the washing fluid container. A changed tool for molding the cap and, possibly, a differently shaped core for forming the housing 5 are all that may be required.
  • FIGS. 4 and 5 depict separate presentations of an air trap 4 .
  • the air trap is 4 arranged on a plastic washing fluid container, not shown in detail, of a washing machine.
  • the container includes a cylindrical receptacle surrounding a drum.
  • the air trap 4 is provided at the front surface of one of the caps 3 of the washing fluid container.
  • FIG. 4 only depicts a partial section of the wall 103 of the washing fluid container cap 3 .
  • the air trap 4 is used to measure the level of washing fluid within the washing machine 30 .
  • the housing of the air trap 4 consists of a lower housing section 104 which is open in a downward direction and an upper housing section 107 with an attached opening nipple 105 for a hose (not shown).
  • the lower housing section 104 is integrally formed in, and penetrates through, the cap 3 of the washing fluid container.
  • the upper housing section 107 with its opening nipple 105 is pivotally connected to the lower housing section 104 by means of a foil hinge 108 .
  • the washing fluid container cap 3 and the two housing sections 14 and 107 can be fabricated as a unitary component.
  • integration of the air trap 4 into the wall 103 of the washing fluid container cap 3 may be carried out by two cores.
  • at least one core is moved in an upward direction as shown by arrow 121 , and a further core may be moved downwardly as shown by arrow 120 .
  • the mold is discharged in a substantially horizontal direction away from the outer surface of the wall 103 , as indicated by arrow 119 .
  • the lower housing section 104 occupies a partial section of the surface 109 of the outer wall of the washing fluid container cap 3 and protrudes in the manner of a wedge from the wall 103 in an upward direction at a preferably acute angle with respect to the surface 109 of th outer wall, resulting in an opening 110 of rectangular or square cross-section with respect to the outer surface.
  • FIG. 4 shows that the downwardly directed section 111 of the lower housing section 104 occupies a partial section of the surface 112 of the inner wall of the washing fluid container cap 3 .
  • the opening section 111 is preferably formed to extend downwardly at an acute angle relative to the surface 112 of the inner wall.
  • the downwardly open section 111 of the lower housing section 106 is offset in a step-like manner in order to enlarge the section 110 of the opening.
  • the step 113 extends at an incline.
  • the lateral walls 106 . 1 and 106 . 2 forming the lower housing section 104 are disposed parallel of each other resulting in a rectangular profile over the extent of the housing interior.
  • the upper housing section 107 is provided with a circumferential groove 114 for receiving a gasket (not shown).
  • lugs 115 . 1 and 115 . 2 are provided at the outer wall of the upper housing section 107 to provide a snap-like or latched closure.
  • the lateral side walls 106 . 1 and 106 . 2 of the lower housing section 104 are provided with ribs 116 .
  • FIG. 4 shows the outwardly directed edges of the ribs 116 . 1 and 116 . 2 to be inclined. Over their extent the two inclines are beveled inwardly. The beveling serves during pivoting of the upper housing section 107 when the lugs 115 . 1 and 115 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Closures For Containers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Cleaning In General (AREA)
  • Control Of Washing Machine And Dryer (AREA)
US11/291,472 2004-11-30 2005-11-30 Plastic washing fluid container for a washing machine Abandoned US20060112736A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102004057943.1 2004-11-30
DE102004057942.3 2004-11-30
DE102004057943A DE102004057943B3 (de) 2004-11-30 2004-11-30 Kunststofflaugenbehälter für eine Waschmaschine
DE102004057942A DE102004057942B3 (de) 2004-11-30 2004-11-30 Kunststofflaugenbehälter für eine Waschmaschine mit Luftfalle

Publications (1)

Publication Number Publication Date
US20060112736A1 true US20060112736A1 (en) 2006-06-01

Family

ID=35695784

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/291,472 Abandoned US20060112736A1 (en) 2004-11-30 2005-11-30 Plastic washing fluid container for a washing machine

Country Status (5)

Country Link
US (1) US20060112736A1 (fr)
EP (1) EP1662035B1 (fr)
AT (1) ATE422006T1 (fr)
DE (1) DE502005006567D1 (fr)
ES (1) ES2320463T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110146353A1 (en) * 2009-12-17 2011-06-23 Whirlpool Corporation Washing machine with air trap
CN102628207A (zh) * 2011-02-01 2012-08-08 三星电子株式会社 具有桶的洗衣机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008052980A1 (fr) * 2006-10-31 2008-05-08 Arcelik Anonim Sirketi Machine à laver
DE202007003085U1 (de) * 2007-03-02 2007-05-24 BSH Bosch und Siemens Hausgeräte GmbH Laugenbehälter für eine Waschmaschine
PL3120748T3 (pl) * 2015-07-23 2019-04-30 Bonferraro Spa Sterownik poziomu wody do zmywarki lub temu podobnego

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737067A (en) * 1971-02-22 1973-06-05 A J Krajewski Manuf Co Plastic box having integrally molded latch
US3918457A (en) * 1973-05-03 1975-11-11 Mc Graw Edison Co Water level control for washing machines
US4423607A (en) * 1980-07-03 1984-01-03 Industrie Zanussi S.P.A. Wash tub of plastics material for clothes washing machines
US5115651A (en) * 1989-10-05 1992-05-26 Sanyo Electric Co., Ltd. Drum-type washing machine
US5671857A (en) * 1992-05-26 1997-09-30 Strombergs Plast A.S. Collapsible container
US6065170A (en) * 1998-07-16 2000-05-23 Samsung Electronics Co., Ltd. Washing machine having a hybrid sensor and a control method thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1503759A1 (de) * 1965-10-14 1969-04-17 Constructa Werke Gmbh Geschirrspuelmaschine
DE2840241C2 (de) * 1978-09-15 1988-07-28 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Waschmaschinen-Ablaufstutzen
FR2599394B1 (fr) * 1986-05-27 1988-07-29 Ciapem Cuve a chambre integree de compression
DE19646440C2 (de) * 1996-11-11 2003-04-10 Bsh Bosch Siemens Hausgeraete Aus Kunststoff gefertigter Laugenbehälter für eine Haushalt-Waschmaschine
IT1308702B1 (it) 1999-02-16 2002-01-10 Iar Siltal Spa Macchina lavabiancheria

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737067A (en) * 1971-02-22 1973-06-05 A J Krajewski Manuf Co Plastic box having integrally molded latch
US3918457A (en) * 1973-05-03 1975-11-11 Mc Graw Edison Co Water level control for washing machines
US4423607A (en) * 1980-07-03 1984-01-03 Industrie Zanussi S.P.A. Wash tub of plastics material for clothes washing machines
US5115651A (en) * 1989-10-05 1992-05-26 Sanyo Electric Co., Ltd. Drum-type washing machine
US5671857A (en) * 1992-05-26 1997-09-30 Strombergs Plast A.S. Collapsible container
US6065170A (en) * 1998-07-16 2000-05-23 Samsung Electronics Co., Ltd. Washing machine having a hybrid sensor and a control method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110146353A1 (en) * 2009-12-17 2011-06-23 Whirlpool Corporation Washing machine with air trap
US8578741B2 (en) 2009-12-17 2013-11-12 Whirlpool Corporation Washing machine with air trap
CN102628207A (zh) * 2011-02-01 2012-08-08 三星电子株式会社 具有桶的洗衣机
US20130025329A1 (en) * 2011-02-01 2013-01-31 Samsung Electronics Co., Ltd. Tub and washing machine having the same

Also Published As

Publication number Publication date
EP1662035A1 (fr) 2006-05-31
ATE422006T1 (de) 2009-02-15
ES2320463T3 (es) 2009-05-22
DE502005006567D1 (de) 2009-03-19
EP1662035B1 (fr) 2009-01-28

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MIELE & CIE. KG., GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BROCKSCHMIDT, EGON;HOLLENHORST, MATTHIAS;NIEDER, ANTJE;REEL/FRAME:017309/0331

Effective date: 20051114

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION