EP2751325B1 - A laundry washing or laundry washing-drying machine drum - Google Patents

A laundry washing or laundry washing-drying machine drum Download PDF

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Publication number
EP2751325B1
EP2751325B1 EP12755846.8A EP12755846A EP2751325B1 EP 2751325 B1 EP2751325 B1 EP 2751325B1 EP 12755846 A EP12755846 A EP 12755846A EP 2751325 B1 EP2751325 B1 EP 2751325B1
Authority
EP
European Patent Office
Prior art keywords
drum
bulge
cylindrical body
laundry washing
contour
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.)
Active
Application number
EP12755846.8A
Other languages
German (de)
French (fr)
Other versions
EP2751325A2 (en
Inventor
Bilgen Gulsen Deliormanli
Yusuf Koc
Nihat Duran
Ahmet Refik Ozdemir
Serdar Ayten
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP2751325A2 publication Critical patent/EP2751325A2/en
Application granted granted Critical
Publication of EP2751325B1 publication Critical patent/EP2751325B1/en
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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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • 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
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • 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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 

Definitions

  • the present invention relates to a drum that is suitable for using in laundry washing or laundry washing-drying machines.
  • a washing machine drum wherein the band (rectangle-shaped sheet metal) is provided with stamps in the shape of a half-moon extruded from an outer side of the drum in an inward direction.
  • the stamps are arranged in rows parallel to the drum axis, whereas an orientation of the stamps is changing each row about 180°, and by this way are formed left stamps and right stamps. Alternately, in each second row is about one stamp less. In the rows with a lower number of stamps these stamps are arranged in a level of gaps between two stamps in the neighbouring row.
  • the aim of the present invention is the realization of a drum that is suitable for using in laundry washing or laundry washing-drying machines and that is prevented from harming the laundry placed therein.
  • the drum realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims dependent thereof, is suitable for using in laundry washing or laundry washing-drying machines and comprises a cylindrical body and holes and bulges located on the cylindrical body.
  • the contour of the bulges is shaped as a closed curve.
  • the contour of the bulges is formed by joining the concave and convex portions end to end.
  • the concave portion of the contour is between the two convex portions.
  • the contour of the bulge is composed of line segments joined end to end.
  • the corners wherein the line segments join are rounded.
  • the line segments are joined to one another alternatively with obtuse angle and acute angle, respectively.
  • the bulge is shaped as a simple concave polygon with rounded corners.
  • the bulge is arrowhead-shaped.
  • the bulge comprises a ridge and at least two surfaces that are inclined in different directions from the ridge towards the surface of the cylindrical body.
  • the surfaces are mirror-symmetric with respect to the ridge.
  • the ridge is inclined towards the surface of the cylindrical body.
  • the holes and bulges are arranged along lines parallel to one another in the axial direction with respect to the rotational axis of the drum.
  • the holes and bulges are aligned so as to follow one another alternately.
  • the ridge extends inclined in the radial direction with respect to the rotational axis of the drum.
  • the concave portion of the bulge contour partially surrounds the hole that comes thereafter on the bulge-hole sequence.
  • the bulge and the hole surrounded by the concave portion of the bulge contour form a deltoid shape together.
  • the holes in adjacent lines are positioned in a staggered manner with respect to one another.
  • the drum (1) which is suitable for using in laundry washing or laundry washing-drying machines and wherein the laundry is placed comprises a cylindrical body (2), at least one hole (3) located on the cylindrical body (2) and at least one bulge (4) which is located on the cylindrical body (2) and extends from the surface of the cylindrical body (2) towards the rotational axis (E) of the drum (1) ( Figure 1 and Figure 2 ).
  • the contour of the bulges (4) is shaped as a closed curve. At least one portion (C1 and C2) of the contour is convex-shaped and another portion (C3) thereof is concave-shaped. The concave-shaped portion (C3) is located between the convex-shaped portions (C1 and C2).
  • the contour is composed of line segments (D1, D2, D3, D4, D5 and D6) joined end to end to one another.
  • the junctures of the line segments (D1, D2, D3, D4. D5 and D6) have radiuses (R1, R2, R3, R4, R5 and R6) ( Figure 3 ).
  • the line segments (D1, D2, D3, D4, D5 and D6) forming the contour are joined such that there is an acute and obtuse angle therebetween, respectively.
  • the bulge (4) comprises at least one ridge (5) and at least two surfaces (6, 106) that are inclined from the ridge (5) towards the surface of the cylindrical body (2) ( Figure 3 ).
  • the ridge (5) separates the surfaces (6, 106) from each other.
  • the ridge (5) is inclined towards the surface of the cylindrical body (2).
  • the surfaces (6, 106) are mirror-symmetric with respect to the ridge (5). Since both the ridge (5) and the surfaces (6, 106) are inclined towards the surface of the cylindrical body (2), the washing liquid coming onto the bulge (4) during the washing process is facilitated to flow over the bulge (4) towards the surface of the cylindrical body (2) ( Figure 4 , Figure 5, Figure 6 and Figure 7 ).
  • the holes (3) and bulges (4) are arranged along lines (S) parallel to one another in the axial direction with respect to the rotational axis (E) of the drum (1).
  • the holes (3) and the bulges (4) are arranged so that there is one hole (3) and after that one bulge (4) on each line (S).
  • One hole (3) is located before and after the bulge (4) along the line (S).
  • the hole (3) located after the bulge (4) among the line (S) is partially surrounded by the concave portion (C3) of the bulge (4) contour.
  • the holes (3) in adjacent lines (S) are arranged so as to be off-set from one another ( Figure 4 ).
  • the washing liquid in the drum (1) is discharged out of the drum (1) by means of the holes (3).
  • the washing fluid coming onto the bulge (4) drains towards the surface of the cylindrical body (2) in different directions by means of the inclination of the surfaces (6, 106) and ridge (5) towards the surface of the cylindrical body (2).
  • the washing fluid is directed towards three different holes (3) is located around the bulge (4).
  • the circulation properties of the washing fluid in the drum (1) are improved.

Description

  • The present invention relates to a drum that is suitable for using in laundry washing or laundry washing-drying machines.
  • In laundry washing or laundry washing-drying machines, laundry is loaded into a drum, the drum is rotated by means of a motor and washing, spin-drying or laundry washing-drying processes are realized. In the state of the art, for the production of the drum, a rectangle-shaped sheet metal is bent into a cylinder and the edges that face one another are joined and thus, the hollow cylindrical body of the drum is formed. The front and the rear sides of the cylindrical body are covered by a circular front door whereon the laundry intake opening is located and a rear door. Holes are formed on the cylindrical body to allow the washing liquid to exit the drum and bulges are formed in the areas remaining between the holes. The performance of the washing process is increased by means of the form, positioning and number of the holes and bulges on the cylindrical body. In the state of the art, embodiments are available about the form and positioning of the holes and bulges on the cylindrical body.
  • In the European Patent No. EP1974083 , a washing machine drum is explained that comprises bulges with a curved outline which is formed by joining circular spring parts.
  • In the Czech published patent application CZ 20100341 A3 , a washing machine drum is disclosed wherein the band (rectangle-shaped sheet metal) is provided with stamps in the shape of a half-moon extruded from an outer side of the drum in an inward direction. The stamps are arranged in rows parallel to the drum axis, whereas an orientation of the stamps is changing each row about 180°, and by this way are formed left stamps and right stamps. Alternately, in each second row is about one stamp less. In the rows with a lower number of stamps these stamps are arranged in a level of gaps between two stamps in the neighbouring row.
  • The aim of the present invention is the realization of a drum that is suitable for using in laundry washing or laundry washing-drying machines and that is prevented from harming the laundry placed therein.
  • The drum realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims dependent thereof, is suitable for using in laundry washing or laundry washing-drying machines and comprises a cylindrical body and holes and bulges located on the cylindrical body. The contour of the bulges is shaped as a closed curve. The contour of the bulges is formed by joining the concave and convex portions end to end.
  • The concave portion of the contour is between the two convex portions.
  • The contour of the bulge is composed of line segments joined end to end.
  • The corners wherein the line segments join are rounded. The line segments are joined to one another alternatively with obtuse angle and acute angle, respectively.
  • In an embodiment of the present invention, the bulge is shaped as a simple concave polygon with rounded corners.
  • In an embodiment of the present invention, the bulge is arrowhead-shaped.
  • In an embodiment of the present invention, the bulge comprises a ridge and at least two surfaces that are inclined in different directions from the ridge towards the surface of the cylindrical body. In a derivative of this embodiment, the surfaces are mirror-symmetric with respect to the ridge.
  • In an embodiment of the present invention, the ridge is inclined towards the surface of the cylindrical body.
  • In an embodiment of the present invention, the holes and bulges are arranged along lines parallel to one another in the axial direction with respect to the rotational axis of the drum. The holes and bulges are aligned so as to follow one another alternately. In this embodiment, the ridge extends inclined in the radial direction with respect to the rotational axis of the drum.
  • In an embodiment of the present invention, the concave portion of the bulge contour partially surrounds the hole that comes thereafter on the bulge-hole sequence. The bulge and the hole surrounded by the concave portion of the bulge contour form a deltoid shape together.
  • In an embodiment of the present invention, the holes in adjacent lines are positioned in a staggered manner with respect to one another.
  • The interaction of the laundry inside the drum and the washing liquid is improved during the rotation of the drum by means of the shape of the bulges.
  • The drum realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
    • Figure 1 - is the perspective view of a drum.
    • Figure 2 - is the view of detail "A" in Figure 1.
    • Figure 3 - is the top view of a bulge.
    • Figure 4 - is the detailed view of a drum.
    • Figure 5 - is the view of cross-section BB in Figure 4.
    • Figure 6 - is the view of cross-section DD in Figure 4.
    • Figure 7 - is the view of CC cross-section in Figure 4.
  • The elements illustrated in the figures are numbered as follows:
    • 1. Drum
    • 2. Cylindrical body
    • 3. Hole
    • 4. Bulge
    • 5. Ridge
    • 6. , 106. Surface
  • The drum (1) which is suitable for using in laundry washing or laundry washing-drying machines and wherein the laundry is placed comprises a cylindrical body (2), at least one hole (3) located on the cylindrical body (2) and at least one bulge (4) which is located on the cylindrical body (2) and extends from the surface of the cylindrical body (2) towards the rotational axis (E) of the drum (1) (Figure 1 and Figure 2).
  • The contour of the bulges (4) is shaped as a closed curve. At least one portion (C1 and C2) of the contour is convex-shaped and another portion (C3) thereof is concave-shaped. The concave-shaped portion (C3) is located between the convex-shaped portions (C1 and C2).
  • In an embodiment of the present invention, the contour is composed of line segments (D1, D2, D3, D4, D5 and D6) joined end to end to one another. The junctures of the line segments (D1, D2, D3, D4. D5 and D6) have radiuses (R1, R2, R3, R4, R5 and R6) (Figure 3).
  • In an embodiment of the present invention, the line segments (D1, D2, D3, D4, D5 and D6) forming the contour are joined such that there is an acute and obtuse angle therebetween, respectively.
  • In an embodiment of the present invention, the bulge (4) comprises at least one ridge (5) and at least two surfaces (6, 106) that are inclined from the ridge (5) towards the surface of the cylindrical body (2) (Figure 3). The ridge (5) separates the surfaces (6, 106) from each other. The ridge (5) is inclined towards the surface of the cylindrical body (2). The surfaces (6, 106) are mirror-symmetric with respect to the ridge (5). Since both the ridge (5) and the surfaces (6, 106) are inclined towards the surface of the cylindrical body (2), the washing liquid coming onto the bulge (4) during the washing process is facilitated to flow over the bulge (4) towards the surface of the cylindrical body (2) (Figure 4, Figure 5, Figure 6 and Figure 7).
  • In an embodiment of the present invention, the holes (3) and bulges (4) are arranged along lines (S) parallel to one another in the axial direction with respect to the rotational axis (E) of the drum (1). The holes (3) and the bulges (4) are arranged so that there is one hole (3) and after that one bulge (4) on each line (S). One hole (3) is located before and after the bulge (4) along the line (S). The hole (3) located after the bulge (4) among the line (S) is partially surrounded by the concave portion (C3) of the bulge (4) contour.
  • In an embodiment of the present invention, the holes (3) in adjacent lines (S) are arranged so as to be off-set from one another (Figure 4).
  • While the washing process is performed inside the drum (1), the washing liquid in the drum (1) is discharged out of the drum (1) by means of the holes (3). In the drying process, the washing fluid coming onto the bulge (4) drains towards the surface of the cylindrical body (2) in different directions by means of the inclination of the surfaces (6, 106) and ridge (5) towards the surface of the cylindrical body (2). The washing fluid is directed towards three different holes (3) is located around the bulge (4).
  • By means of the shape of the bulges (4) formed on the cylindrical body (2) of the drum (1) used in laundry washing or laundry washing-drying machines, the circulation properties of the washing fluid in the drum (1) are improved.
  • It is to be understood that the present invention is not limited by the embodiments disclosed above and a person skilled in the art can easily introduce different embodiments. These should be considered within the scope of the protection postulated by the claims of the present invention.

Claims (11)

  1. A drum (1) which is suitable for using in laundry washing or laundry washing-drying machines and wherein the laundry is placed, comprising a cylindrical body (2), at least one hole (3) which is located on the cylindrical body (2) and at least one bulge (4) which is located on the cylindrical body (2) and extends from the surface of the cylindrical body (2) towards the rotational axis (E) of the drum (4), and the contour of which has a closed curve form, characterized in that at least one portion (C1 and C2) of the contour is convex-shaped and another portion (C3) is concave-shaped and
    wherein the concave-shaped portion (C3) is located between the convex-shaped portions (C1 and C2), wherein the contour is composed of line segments (D1, D2, D3, D4, D5 and D6) joined end to end to one another and wherein the junctures of the line segments (D1, D2, D3, D4, D5 and D6) have radiuses (R1, R2, R3, R4, R5 and R6) wherein the radiuses (R1, R2, R3, R4, R5 and R6) are rounded portions of the contour which are formed at the junctures where two line segments (01, 02, 03, 04, 05 and 06) are joined end to end to another.
  2. The drum (1) as in Claim 1, characterized by the bulge (4) wherein the line segments (D1, D2, D3, D4, D5 and D6) forming the contour are joined to one another alternately with acute and obtuse angle therebetween, respectively.
  3. The drum (1) as in any one of the above claims, characterized by the bulge (4) which comprises at least one ridge (5) and at least two surfaces (6, 106) that are inclined from the ridge (5) towards the surface of the cylindrical body (2).
  4. The drum (1) as in Claim 3, characterized by the ridge (5) that separates the surfaces (6, 106) from each other.
  5. The drum (1) as in Claim 3 or 4, characterized by the ridge (5) that is inclined towards the surface of the cylindrical body (2).
  6. The drum (1) as in Claim 4 or 5, characterized by the surfaces (6, 106) that are mirror-symmetric with respect to the ridge (5).
  7. The drum (1) as in any one of the above claims, characterized by the holes (3) and bulges (4) that are arranged along lines (S) parallel to one another in the axial direction with respect to the rotational axis (E) so that there is one hole (3) and after that one bulge (4).
  8. The drum (1) as in Claim 7, characterized by the hole (3) that is located after the bulge (4) among the line (S) and that is partially surrounded by the concave portion (C3) of the bulge (4) contour.
  9. The drum (1) as in Claim 7 or 8, characterized by the holes (3) that are arranged so as to be off-set from one another in adjacent lines (S).
  10. A laundry washing machine comprising the drum (1) as in any one of the above claims.
  11. A laundry washing-drying machine comprising the drum (1) as in any one of the Claims 1 to 9.
EP12755846.8A 2011-09-02 2012-09-03 A laundry washing or laundry washing-drying machine drum Active EP2751325B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201108699 2011-09-02
PCT/EP2012/067054 WO2013030394A2 (en) 2011-09-02 2012-09-03 A laundry washing or laundry washing-drying machine drum

Publications (2)

Publication Number Publication Date
EP2751325A2 EP2751325A2 (en) 2014-07-09
EP2751325B1 true EP2751325B1 (en) 2017-05-10

Family

ID=46799234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12755846.8A Active EP2751325B1 (en) 2011-09-02 2012-09-03 A laundry washing or laundry washing-drying machine drum

Country Status (3)

Country Link
EP (1) EP2751325B1 (en)
CN (1) CN103764893B (en)
WO (1) WO2013030394A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3412823B1 (en) * 2017-06-08 2022-03-30 LG Electronics Inc. Drum of laundry machine
PL3715522T3 (en) * 2019-03-26 2022-09-12 Electrolux Appliances Aktiebolag Washing drum for a laundry washing machine and laundry washing machine equipped with such drum
CN115538104A (en) * 2021-06-30 2022-12-30 无锡小天鹅电器有限公司 Washing drum and clothes treatment equipment with same
CN115538105A (en) * 2021-06-30 2022-12-30 无锡小天鹅电器有限公司 Washing drum and clothes treatment equipment with same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006010179A1 (en) * 2005-12-28 2007-07-05 BSH Bosch und Siemens Hausgeräte GmbH Drum with a horizontal axis for a washing machine or tumbler drier has drop-shaped surface bulges with only one axis of symmetry in the circumferential direction
CN201224835Y (en) * 2008-07-07 2009-04-22 宋贵亮 High-rigidity high-speed inner drum for drum-type washing machine
CZ302335B6 (en) * 2010-05-03 2011-03-16 Primus Ce S.R.O. Washing machine drum
CN201785625U (en) * 2010-08-25 2011-04-06 济南米乐电器有限公司 Internal barrel for cylinder washing machine

Also Published As

Publication number Publication date
WO2013030394A2 (en) 2013-03-07
WO2013030394A3 (en) 2013-04-25
CN103764893A (en) 2014-04-30
EP2751325A2 (en) 2014-07-09
CN103764893B (en) 2016-09-28

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