EP3578707A1 - Laundry treating appliance - Google Patents

Laundry treating appliance Download PDF

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Publication number
EP3578707A1
EP3578707A1 EP19174062.0A EP19174062A EP3578707A1 EP 3578707 A1 EP3578707 A1 EP 3578707A1 EP 19174062 A EP19174062 A EP 19174062A EP 3578707 A1 EP3578707 A1 EP 3578707A1
Authority
EP
European Patent Office
Prior art keywords
tub
laundry treating
treating appliance
flat surface
welding
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.)
Granted
Application number
EP19174062.0A
Other languages
German (de)
French (fr)
Other versions
EP3578707B1 (en
Inventor
Chao Ye
Weiyong Liang
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL19174062T priority Critical patent/PL3578707T3/en
Publication of EP3578707A1 publication Critical patent/EP3578707A1/en
Application granted granted Critical
Publication of EP3578707B1 publication Critical patent/EP3578707B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F37/263—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements assembled from at least two elements connected to each other; Connecting or sealing means therefor
    • 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
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
    • 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
    • D06F58/20—General details of domestic laundry dryers 
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 

Definitions

  • the present invention relates to a laundry treating appliance for laundry washing and/or drying, and in particular to a connection structure for plastic parts of the laundry treating appliance.
  • Laundry treating appliances are typically provided with a laundry treating space in which the laundry is washed and/or dried.
  • a washing liquid and/or dry air are/is agitated or flow(s) within the treating space.
  • the treating space typically includes a fluid passageway or a container formed by combining a plurality of assemblies.
  • the plurality of assemblies is connected through friction welding.
  • welding burs may be generated during the friction welding, and wool or fluff comes off the laundry when washing and/or drying are/is performed in the laundry treating space.
  • the wool or fluff easily adheres to an area of the welding burs, absorbing more dirt or affecting the drying effect.
  • One object of the present invention is to provide an improved laundry treating appliance.
  • the present invention provides a laundry treating appliance, including a hollow mechanism in which a fluid passageway or a container is formed, the hollow mechanism including a first member and a second member, the first member having a first flat surface before assembly, the second member having a second flat surface before assembly, the first member and the second member being fixedly connected through friction welding of the first flat surface and the second flat surface to form the hollow mechanism, and at least one of the first flat surface and the second flat surface having protruding welding ribs that constitute edges of several closed geometric units joined to each other.
  • the welding ribs that form the closed geometric units joined to each other have a longer welding line, a larger area, and higher welding strength, thus achieving a firmer and more reliable connection between the first member and the second member and higher tightness of welding points.
  • the geometric units may be of polygonal structures.
  • the geometric units have a same shape.
  • the geometric units may be of hexagons.
  • the geometric units form a substantially honeycomb-shaped structure after being joined to each other.
  • the welding ribs include a main welding rib that protrudes higher and an auxiliary welding rib that protrudes lower, where the auxiliary welding rib is at least distributed on an outer circumference of the geometric units at the periphery, and the main welding rib is located in the interior of weld zones that are enclosed by the auxiliary welding rib.
  • the higher main welding rib melts to a larger extent
  • the lower auxiliary welding rib melts to a smaller extent.
  • weld burs are generally present on the main welding rib but are not or rarely present on the auxiliary welding rib. Since the auxiliary welding rib is located on the outer circumference of the weld zone, wool or fluff is not easily hooked due to the weld burs.
  • the laundry treating appliance has a rotary drum configured to accommodate laundry and a tub disposed around the drum, the hollow mechanism including the tub.
  • an inner surface of a wall of the tub has a groove, the groove being covered by a cover plate, the cover plate being fixedly connected to the wall of the tub to form an air condensing passageway between the groove and the cover plate, the first member including the wall of the tub, and the second member including the cover plate.
  • the tub includes a front tub and a rear tub that respectively have a first fitting face and a second fitting face that are opposite to each other, the first member including the front tub, and the second member including the rear tub.
  • the welding ribs may be formed on at least one of the first fitting face and the second fitting face.
  • the laundry treating appliance has a rotary drum configured to accommodate laundry, a tub disposed around the drum, and a passageway connected to the tub that allows passage of dry air, where the hollow mechanism includes the passageway that allows the passage of the dry air.
  • the hollow mechanism is made of plastic.
  • a washer-dryer 10 has a rotary drum 2 configured to accommodate laundry and a tub 4 disposed around the drum 2.
  • a condensing passageway 6 is integrally formed on the tub 4.
  • An outlet 62 of the condensing passageway 6 is connected to a fan 8.
  • the other end of the fan 8 is connected to an air heating passageway 9.
  • An outlet 91 of the air heating passageway 9 communicates with the tub 4.
  • the tub 4, the condensing passageway 6, the fan 8, and the air heating passageway 9 therefore form an air circulation loop.
  • humidified and hot air exchanges heat in the condensing passageway 6, and moisture in the air is liquefied into water and separated from the air.
  • the tub 4 includes a front tub 41 and a rear tub 42 that respectively have a first fitting face 410 and a second fitting face 420 that are opposite to each other and are substantially flat.
  • the first fitting face 410 and the second fitting face 420 are connected through friction welding, with a first weld zone 43a therebetween.
  • an inner surface 440 of a rear wall 44 of the tub 4 has a groove 441.
  • the groove 441 is covered by a cover plate 5, and the cover plate 5 is fixedly connected to the rear wall 44 of the tub to form the condensing passageway 6 between the groove 441 and the cover plate 5.
  • the cover plate 5 is connected to the rear wall 44 of the tub 4 through friction welding, with a second weld zone 43b therebetween.
  • the cover plate 5 has a third fitting face 51 that is substantially flat, and a side of the rear wall 44 of the tub that faces the cover plate 5 has a fourth fitting face 442 that is substantially flat.
  • the tub may be connected to a separate condensing passageway that allows passage of dry air.
  • the passageway is formed of two butted assemblies. The two assemblies are connected through friction welding.
  • the tub 4, the cover plate 5, the independent condensing passageway, and the like that are described above are made of plastic by means of injection molding.
  • the first fitting face 410 and the third fitting face 51 are respectively provided with protruding welding ribs 7.
  • the welding ribs 7 constitute edges of several closed geometric units 70 that are joined to each other.
  • the geometric units 70 are of hexagonal structures having a same shape and a same size.
  • the welding ribs 7 include a main welding rib 71 that protrudes higher and an auxiliary welding rib 72 that protrudes lower.
  • the auxiliary welding rib 72 is distributed on an outer circumference of the geometric units at the periphery. It can also be understood that the auxiliary welding rib 72 is located at edges of the first weld zone 43a and the second weld zone 43b.
  • the main welding rib 71 is located in the interior of the weld zones 43a and 43b that are enclosed by the auxiliary welding rib 72. A part of the auxiliary welding rib 72 may also be located in the interior of the weld zones 43a and 43b.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

Laundry treating appliance including a hollow mechanism (4, 6) including a first member and a second member, the first member having a first flat surface before assembly, the second member having a second flat surface before assembly, the first member and the second member being fixedly connected through friction welding of the first flat surface and the second flat surface to form the hollow mechanism, and at least one of the first flat surface and the second flat surface having protruding welding ribs (7) that constitute edges of several closed geometric units (70) joined to each other. The welding ribs (7) that form the closed geometric units (70) joined to each other have a longer welding line, a larger area, and higher welding strength, thus achieving a firmer and more reliable connection between the first member and the second member and higher tightness of welding points.

Description

    BACKGROUND Technical Field
  • The present invention relates to a laundry treating appliance for laundry washing and/or drying, and in particular to a connection structure for plastic parts of the laundry treating appliance.
    • Related Art
  • Laundry treating appliances are typically provided with a laundry treating space in which the laundry is washed and/or dried. A washing liquid and/or dry air are/is agitated or flow(s) within the treating space.
  • The treating space typically includes a fluid passageway or a container formed by combining a plurality of assemblies. In some cases, the plurality of assemblies is connected through friction welding.
  • In order to avoid leakage of the liquid or the dry air during laundry treatment, it is desired to achieve high tightness for the friction welding and high strength for welding joints. In addition, welding burs may be generated during the friction welding, and wool or fluff comes off the laundry when washing and/or drying are/is performed in the laundry treating space. The wool or fluff easily adheres to an area of the welding burs, absorbing more dirt or affecting the drying effect.
    • SUMMARY
  • One object of the present invention is to provide an improved laundry treating appliance.
  • The present invention provides a laundry treating appliance, including a hollow mechanism in which a fluid passageway or a container is formed, the hollow mechanism including a first member and a second member, the first member having a first flat surface before assembly, the second member having a second flat surface before assembly, the first member and the second member being fixedly connected through friction welding of the first flat surface and the second flat surface to form the hollow mechanism, and at least one of the first flat surface and the second flat surface having protruding welding ribs that constitute edges of several closed geometric units joined to each other.
  • As compared with a traditional independent linear welding rib, the welding ribs that form the closed geometric units joined to each other have a longer welding line, a larger area, and higher welding strength, thus achieving a firmer and more reliable connection between the first member and the second member and higher tightness of welding points.
  • The geometric units may be of polygonal structures.
  • Preferably, the geometric units have a same shape.
  • More specifically, the geometric units may be of hexagons. The geometric units form a substantially honeycomb-shaped structure after being joined to each other.
  • In one of preferred implementations, the welding ribs include a main welding rib that protrudes higher and an auxiliary welding rib that protrudes lower, where the auxiliary welding rib is at least distributed on an outer circumference of the geometric units at the periphery, and the main welding rib is located in the interior of weld zones that are enclosed by the auxiliary welding rib. Thus, during the friction welding, the higher main welding rib melts to a larger extent, and the lower auxiliary welding rib melts to a smaller extent. As a result, weld burs are generally present on the main welding rib but are not or rarely present on the auxiliary welding rib. Since the auxiliary welding rib is located on the outer circumference of the weld zone, wool or fluff is not easily hooked due to the weld burs.
  • The laundry treating appliance has a rotary drum configured to accommodate laundry and a tub disposed around the drum, the hollow mechanism including the tub.
  • In one of embodiments, an inner surface of a wall of the tub has a groove, the groove being covered by a cover plate, the cover plate being fixedly connected to the wall of the tub to form an air condensing passageway between the groove and the cover plate, the first member including the wall of the tub, and the second member including the cover plate.
  • In addition, the tub includes a front tub and a rear tub that respectively have a first fitting face and a second fitting face that are opposite to each other, the first member including the front tub, and the second member including the rear tub. The welding ribs may be formed on at least one of the first fitting face and the second fitting face.
  • The laundry treating appliance has a rotary drum configured to accommodate laundry, a tub disposed around the drum, and a passageway connected to the tub that allows passage of dry air, where the hollow mechanism includes the passageway that allows the passage of the dry air.
  • The hollow mechanism is made of plastic.
  • One of specific implementations of the present invention will be described hereinafter by using a washer-dryer as an example with reference to the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • FIG. 1
    is a schematic side view of a washer-dryer;
    FIG. 2
    is a schematic front view of a rear tub of a tub; and
    FIG. 3
    is a plan view of a welding rib on a cover plate.
    DETAILED DESCRIPTION
  • As shown in FIG. 1, a washer-dryer 10 has a rotary drum 2 configured to accommodate laundry and a tub 4 disposed around the drum 2. A condensing passageway 6 is integrally formed on the tub 4. An outlet 62 of the condensing passageway 6 is connected to a fan 8. The other end of the fan 8 is connected to an air heating passageway 9. An outlet 91 of the air heating passageway 9 communicates with the tub 4. The tub 4, the condensing passageway 6, the fan 8, and the air heating passageway 9 therefore form an air circulation loop. During drying, humidified and hot air exchanges heat in the condensing passageway 6, and moisture in the air is liquefied into water and separated from the air.
  • The tub 4 includes a front tub 41 and a rear tub 42 that respectively have a first fitting face 410 and a second fitting face 420 that are opposite to each other and are substantially flat. The first fitting face 410 and the second fitting face 420 are connected through friction welding, with a first weld zone 43a therebetween.
  • As shown in FIG. 2, an inner surface 440 of a rear wall 44 of the tub 4 has a groove 441. The groove 441 is covered by a cover plate 5, and the cover plate 5 is fixedly connected to the rear wall 44 of the tub to form the condensing passageway 6 between the groove 441 and the cover plate 5. The cover plate 5 is connected to the rear wall 44 of the tub 4 through friction welding, with a second weld zone 43b therebetween. In order to achieve the friction welding, the cover plate 5 has a third fitting face 51 that is substantially flat, and a side of the rear wall 44 of the tub that faces the cover plate 5 has a fourth fitting face 442 that is substantially flat.
  • In other embodiments not shown in the drawings, the tub may be connected to a separate condensing passageway that allows passage of dry air. The passageway is formed of two butted assemblies. The two assemblies are connected through friction welding.
  • The tub 4, the cover plate 5, the independent condensing passageway, and the like that are described above are made of plastic by means of injection molding.
  • In order to achieve the friction welding, in one of the embodiments, the first fitting face 410 and the third fitting face 51 are respectively provided with protruding welding ribs 7.
  • As shown in FIG. 3, the welding ribs 7 constitute edges of several closed geometric units 70 that are joined to each other. In a preferred embodiment, the geometric units 70 are of hexagonal structures having a same shape and a same size.
  • The welding ribs 7 include a main welding rib 71 that protrudes higher and an auxiliary welding rib 72 that protrudes lower. The auxiliary welding rib 72 is distributed on an outer circumference of the geometric units at the periphery. It can also be understood that the auxiliary welding rib 72 is located at edges of the first weld zone 43a and the second weld zone 43b. The main welding rib 71 is located in the interior of the weld zones 43a and 43b that are enclosed by the auxiliary welding rib 72. A part of the auxiliary welding rib 72 may also be located in the interior of the weld zones 43a and 43b.
  • The specific implementations described above and shown in the drawings are merely illustrative of the present invention, but do not represent the entire invention. Within the scope of the basic technical ideas of the present invention, all changes to the present invention made by those of ordinary skill in the art fall within the protection scope of the present invention.

Claims (10)

  1. A laundry treating appliance, comprising a hollow mechanism (4, 6) in which a fluid passageway or a container is formed, the hollow mechanism comprising a first member (41, 5) and a second member (42, 44), the first member having a first flat surface (410, 51) before assembly, the second member having a second flat surface (420, 442) before assembly, and the first member and the second member being fixedly connected through friction welding of the first flat surface and the second flat surface to form the hollow mechanism, characterized in that at least one of the first flat surface and the second flat surface has protruding welding ribs (7, 71, 72), and the welding ribs constitute edges of several closed geometric units (70) joined to each other.
  2. The laundry treating appliance according to claim 1, characterized in that the geometric units are of polygonal structures.
  3. The laundry treating appliance according to claim 2, characterized in that the geometric units have a same shape.
  4. The laundry treating appliance according to claim 3, characterized in that the geometric units are of hexagons.
  5. The laundry treating appliance according to any one of claims 1 to 4, characterized in that the welding ribs comprise a main welding rib (71) that protrudes higher and an auxiliary welding rib (72) that protrudes lower, wherein the auxiliary welding rib is at least distributed on an outer circumference of the geometric units at the periphery, and the main welding rib is located in the interior of weld zones (43a, 43b) that are enclosed by the auxiliary welding rib.
  6. The laundry treating appliance according to claim 5, characterized by having a rotary drum (2) configured to accommodate laundry and a tub (4) disposed around the drum, the hollow mechanism comprising the tub.
  7. The laundry treating appliance according to claim 6, characterized in that an inner surface (440) of a rear wall (44) of the tub has a groove (441), the groove being covered by a cover plate (5), the cover plate (5) being fixedly connected to the rear wall of the tub to form an air condensing passageway (6) between the groove and the cover plate, the first member comprising the rear wall of the tub, and the second member comprising the cover plate.
  8. The laundry treating appliance according to claim 6, characterized in that the tub comprises a front tub (41) and a rear tub (42) that respectively have a first fitting face (410) and a second fitting face (420) that are opposite to each other, the first member comprising the front tub, the second member comprising the rear tub, and the welding rib being formed on at least one of the first fitting face and the second fitting face.
  9. The laundry treating appliance according to claim 5, characterized by having a rotary drum configured to accommodate laundry, a tub disposed around the drum, and a passageway (6) connected to the tub that allows passage of dry air, wherein the hollow mechanism comprises the passageway that allows the passage of the dry air.
  10. The laundry treating appliance according to claim 1, characterized in that the hollow mechanism is made of plastic.
EP19174062.0A 2018-06-05 2019-05-13 Laundry treating appliance Active EP3578707B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL19174062T PL3578707T3 (en) 2018-06-05 2019-05-13 Laundry treating appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810566605.5A CN110565328B (en) 2018-06-05 2018-06-05 Clothes treating appliance

Publications (2)

Publication Number Publication Date
EP3578707A1 true EP3578707A1 (en) 2019-12-11
EP3578707B1 EP3578707B1 (en) 2022-01-19

Family

ID=66529855

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19174062.0A Active EP3578707B1 (en) 2018-06-05 2019-05-13 Laundry treating appliance

Country Status (3)

Country Link
EP (1) EP3578707B1 (en)
CN (1) CN110565328B (en)
PL (1) PL3578707T3 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115894A1 (en) * 2006-04-12 2007-10-18 BSH Bosch und Siemens Hausgeräte GmbH Tub for washing machine
WO2010029112A1 (en) * 2008-09-10 2010-03-18 Carnehammar, Lars Bertil Method, system and device for reducing vibration in an article processing machine, such as a washing machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206502987U (en) * 2016-09-30 2017-09-19 无锡小天鹅股份有限公司 Rear outer barrel, outer tub assembly, tub assembly and the roller washing machine of roller washing machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115894A1 (en) * 2006-04-12 2007-10-18 BSH Bosch und Siemens Hausgeräte GmbH Tub for washing machine
WO2010029112A1 (en) * 2008-09-10 2010-03-18 Carnehammar, Lars Bertil Method, system and device for reducing vibration in an article processing machine, such as a washing machine

Also Published As

Publication number Publication date
CN110565328B (en) 2022-08-09
PL3578707T3 (en) 2022-04-04
CN110565328A (en) 2019-12-13
EP3578707B1 (en) 2022-01-19

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