EP4495314A1 - Trommel-waschtrockner - Google Patents

Trommel-waschtrockner Download PDF

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Publication number
EP4495314A1
EP4495314A1 EP24181967.1A EP24181967A EP4495314A1 EP 4495314 A1 EP4495314 A1 EP 4495314A1 EP 24181967 A EP24181967 A EP 24181967A EP 4495314 A1 EP4495314 A1 EP 4495314A1
Authority
EP
European Patent Office
Prior art keywords
tub
bottom wall
support portion
wall
air channel
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.)
Pending
Application number
EP24181967.1A
Other languages
English (en)
French (fr)
Inventor
Zhehao Jiang
Yuhao Huang
Jin Lu
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
Publication of EP4495314A1 publication Critical patent/EP4495314A1/de
Pending 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
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • 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 
    • 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
    • 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
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a drum type washer dryer and a tub used in the drum type washer dryer, and further relates to the field of air heat exchange technologies for a washer dryer.
  • a drum type washer dryer usually includes a laterally arranged tub, and clothes are washed and/or dried in the tub.
  • An air channel is connected to at least one end of the tub, so that processing air is input into and/or discharged from the tub in a drying process, to dehumidify the clothes in the tub.
  • a cylinder for a clothes drying appliance including: a rear cylinder section having an air output opening, and at least one lid attached to the rear cylinder section, and an air duct, where the air duct is connected to the air output opening and is defined by the rear cylinder section and the at least one lid.
  • the connection between the lid and the rear cylinder section breaks flatness of an inner surface of the rear cylinder section, which tends to accumulate lint generated in the drying process in the connection region, and accumulate various dirt in a washing process.
  • an end wall at the position of the air duct of the rear cylinder section is relatively weak for not being reinforced by a reinforcing rib.
  • the lid may have a reinforcing effect.
  • a structure and a manufacturing process of the lid are complex, and a connection area between the lid and a base is small, which weakens the reinforcing effect of the lid.
  • An objective of the present invention is to provide a tub used in a drum type washer dryer and the drum type washer dryer including the tub, thereby improving at least one deficiency existing in the related art such as the above mentioned.
  • An embodiment of the present invention discloses a tub, used in a drum type washer dryer, and including a tub body.
  • a first side of the tub body is provided with an opening, and a second side opposite to the first side is provided with a bottom wall.
  • a support portion is connected to the bottom wall from an outer side of the bottom wall, one side of the bottom wall facing the support portion is provided with a first wall, one side of the support portion facing the bottom wall is provided with a second wall opposite to the first wall, after the support portion is connected to the bottom wall, an air channel is formed between the first wall and the second wall, one of an inlet and an outlet of the air channel is located on the bottom wall, another one of the inlet and the outlet of the air channel is at least partially located on the support portion, the support portion includes a reinforcing portion extending laterally outward around the second wall, and several first reinforcing ribs are arranged on the reinforcing portion.
  • the support portion and the bottom wall may be connected by any one or more of welding, gluing, screw fixing, or the like.
  • one side of the bottom wall away from the support portion is entirely flat, and/or, the first wall and a rest part of the bottom wall are on a same extension surface.
  • the support portion includes a first surface facing the bottom wall and a second surface facing away from the bottom wall, and the second wall is recessed relative to the first surface in a direction away from the first wall.
  • several second reinforcing ribs are arranged on a position that is on one side of the bottom wall facing the support portion, and avoids the first wall, and the support portion is welded to the bottom wall at the second reinforcing ribs.
  • positions of at least some of the first reinforcing ribs correspond to positions of at least some of the second reinforcing ribs.
  • At least some of the first reinforcing ribs are penetrated through and are welded to the second reinforcing ribs.
  • first reinforcing ribs are arranged on one side of the second wall facing away from the bottom wall.
  • the first reinforcing ribs are evenly distributed along a circumferential direction on one side of the support portion facing away from the bottom wall.
  • the tub body is made of a first material
  • the support portion is made of a second material.
  • a recycling rate of the first material is higher than that of the second material, and/or, strength of the second material is higher than that of the first material.
  • the first material includes a polypropylene material containing talc powder
  • the second material includes a polypropylene material containing fiberglass.
  • a bearing is arranged on the support portion near a central region.
  • the bottom wall is provided with a second hole.
  • a drive shaft is supported by the bearing, and passes through the second hole, to drive a drum in the tub.
  • a periphery of the bearing is reinforced by the several first reinforcing ribs.
  • the air channel avoids the bearing and presents an approximately "C" shaped extension path.
  • the support portion covers most of the outer side of the bottom wall.
  • the support portion includes an outlet connection portion, and is connected to an external air channel, where the outlet connection portion has a cross section larger than a flow cross section of the air channel.
  • the tub body includes a front tub and a rear tub, the opening is located on the front tub, the bottom wall is located on the rear tub, and the front tub and the rear tub are made of a same recyclable material.
  • An external air channel is connected to the air channel, and a blowing device is arranged in the external air channel, to cause air to flow.
  • a drive shaft passes through the support portion and the bottom wall, to be connected to a drum in the tub.
  • a heat exchange device is connected to the air channel, and a cooling medium is introduced to exchange heat with air passing through the air channel.
  • the tub and the drum type washer dryer including the tub in the present invention can be simpler to manufacture and assemble, reduce adhesion of lint and dirt inside the bottom wall of the tub, and improve strength and rigidity of the tub including the air channel.
  • only the support portion may be made of a material with high rigidity and strength, while low rigidity and strength of the tub body may be required, so that the tub body has a larger material selection space.
  • the tub body may be made of a low-cost material, and/or a material with high recyclability, which is more beneficial for environmental protection and sustainable development.
  • orientation terms or direction terms are relative to a routine use state of a drum type washer dryer.
  • a person skilled in the art may clarify this from the description of the present invention without causing confusion.
  • the orientation terms and direction terms should not be construed simply as indicating an orientation or direction in any state.
  • the orientation terms such as “front” and “rear” in this specification may be understood with reference to FIG. 1 and FIG. 2 ; and “inner” may be relative to an internal space surrounded by the tub, while “outer” corresponds to “inner”, that is, a space or an orientation outside the internal space defined by the tub.
  • ordinal numbers such as the "first” and “second” are set to avoid confusion of constituent elements, and are not intended to limit the quantity, nor mean that they differ in importance.
  • the drum type washer dryer involved in the present invention may wash and/or dry clothes, so that a tub is usually connected to an air channel, or includes an air channel. In a drying process, air carrying moisture undergoes heat exchange in the air channel.
  • the tub of the drum type washer dryer is generally arranged horizontally in an axial direction, or tilted at an angle, but still keeps a way of basically opening a door from a front side.
  • a structure of an embodiment of a drum type washer dryer 100 may be understood with reference to FIG. 1 and FIG. 2 .
  • the drum type washer dryer 100 includes a tub 1 usually made of plastic, and a drum 2 is driven by a force transferred by a drive shaft 3 and rotatably located in the tub 1. Clothes are washed and/or dried in the drum 2.
  • An air channel 10 is formed on the tub 1. One end of the air channel 10 is connected to an inner space of the tub 1, and another end is connected to an external air channel 20.
  • a blowing device 21 is arranged in the external air channel 20.
  • air may enter the external air channel 20 through the air channel 10 from the tub 1, and re-enter the tub 1 after being heated in the external air channel 20; or is directly discharged from the machine from the external air channel 20.
  • the air enters the tub 1 from the external air channel 20 through the air channel 10.
  • a flow direction of the air driven by the blowing device 21 remains unchanged, and is preset according to an actual design requirement. In fact, commonly, the air in the tub 1 is activated to enter the air channel 10, then enters the external air channel 20, and then returns to the tub 1 after being heated.
  • the tub 1 includes a tub body 11 that forms a main accommodation part of the tub 1.
  • the tub body 11 is formed by a front tub 111 and a rear tub 112 that are sealed and butted.
  • the tub body 11 is basically a round barrel shape.
  • a first side of the tub body 11 is provided with an opening 12, and a second side opposite to the first side is provided with a bottom wall 13 (the bottom wall 13 is invisible in FIG. 1 due to the angle, but the position of the bottom wall 13 may be seen with reference to the reference numeral).
  • the clothes may be put in or taken out through the opening 12.
  • the opening 12 is located on the front tub 111
  • the bottom wall 13 is located on the rear tub 112.
  • the front tub 111 and the rear tub 112 may be made of a same first material, especially made of a recyclable material, or the material price may be taken into account for appropriate selection.
  • the front tub 111 and the rear tub 112 may be made of a polypropylene material containing talc powder.
  • a support portion 30 is fixedly connected to the bottom wall 13 from an outer side of the bottom wall 13, to strengthen the bottom wall 13, and enhance rigidity and strength of the entire tub 1, preventing the tub 1 from being deformed or damaged under a high-intensity working condition.
  • an air channel 10 is formed between the support portion 30 and the bottom wall 13. Therefore, the air channel 10 is formed in a very compact manner, saving an internal space of the machine.
  • an outer side or a rear side of the bottom wall 13 is provided with a first wall 131. Since the support portion 30 is installed on the bottom wall 13 from the rear side, it may also be considered that one side of the bottom wall 13 facing the support portion 30 is provided with the first wall 131. One side of the support portion 30 facing the bottom wall 13 is provided with a second wall 31 opposite to the first wall 131. Surfaces of the first wall 131 and the second wall 31 are basically smooth except for a necessary structure, to avoid accumulation of lint. Shapes of the first wall 131 and the second wall 31 basically match. In this way, after the support portion 30 is connected to the bottom wall 13, the air channel 10 is formed between the first wall 131 and the second wall 31.
  • the bottom wall 13 is provided with a first hole 132 connected to the first wall 131. Therefore, the first hole 132 may be used as an inlet 101 or an outlet 102 of the air channel 10. Another one of the inlet 101 or the outlet 102 of the air channel 10 is at least partially located on the support portion 30.
  • the support portion 30 includes a reinforcing portion 32 extending laterally outward around the second wall 31.
  • Several first reinforcing ribs 33 are arranged on the reinforcing portion 32.
  • the reinforcing portion 32 extending laterally outward not only makes the connection more stable, but also makes a stress of the position of the air channel 10 be laterally released and reduced, so that lost strength is better enhanced.
  • the support portion 30 covers most of the outer side of the bottom wall 13.
  • a range covered by the reinforcing portion 32 may be as large as possible.
  • the support portion 30 covers almost the entire outer side of the bottom wall 13, so that the support portion 30 can strengthen the entire bottom wall 13.
  • a bearing 36 may be arranged on the support portion 30 near a central region.
  • a central position of the bottom wall 13 is provided with a second hole 133.
  • the drive shaft 3 is supported by the bearing 36, and passes through the second hole 133 on the bottom wall 13, to be fixedly connected to a holder 4 connected to the drum 2.
  • the drive shaft 3 can transfer a rotational motion of a motor (not shown in the figures), to drive the drum 2 in the tub 1 to rotate.
  • a periphery of the bearing 36 is reinforced by several first reinforcing ribs 37.
  • the air channel 10 avoids the bearing 36 and presents an approximately "C" shaped extension path. In this way, a path of the air channel 10 may be as long as possible.
  • the support portion 30 is made of a second material different from the first material.
  • the second material may be a material with higher strength and/or rigidity than the first material.
  • the second material includes a polypropylene material containing fiberglass.
  • a recycling rate of the second material may be set to a low priority. Therefore, a recycling rate of the first material may be higher than that of the second material. Since the tub body 11 occupies a significantly large portion of the tub 1, a recyclable part of the tub 1 accounts for a high proportion, while the overall strength and rigidity of the tub 1 can be ensured.
  • the inner side of the bottom wall 13, that is, one side away from the support portion 30 is entirely flat.
  • first wall 131 and the bottom wall 13 are on a same extension surface. It may be understood that the first wall 131 does not sink or bulge inwardly or outwardly relative to a rest part of the bottom wall 13.
  • the support portion 30 includes a first surface 34 facing the bottom wall 13 and a second surface 35 facing away from the bottom wall 13.
  • the second wall 31 is recessed relative to the first surface 34 in a direction away from the first wall.
  • the first reinforcing ribs 33 are evenly distributed around the bearing 36 along a circumferential direction on one side of the support portion 30 facing away from the bottom wall 13.
  • the first reinforcing ribs 33 are distributed in a radial pattern.
  • a coverage region of the first reinforcing ribs 33 includes a second wall 31, that is, several first reinforcing ribs 33 are also arranged on one side of the second wall 31 facing away from the bottom wall, so that the second wall 31 is also reinforced. From a thickness direction, the first reinforcing rib 31 is higher on the region closer to the central position of the bearing 36. A height of the first reinforcing rib 31 at the second wall 31 is lower than that of the first reinforcing rib 31 at the reinforcing portion 32.
  • second reinforcing ribs 135 are arranged on the outer side of the bottom wall 13, that is, a position that is one side facing the support portion 30 and avoids the first wall 131.
  • the second reinforcing ribs 135 are approximately distributed radially around the second hole 133, and are even along a circumferential direction.
  • the support portion 30 is welded to the bottom wall 13 at the second reinforcing ribs 135.
  • the reinforcing portion 32 of the support portion 30 is welded to the several second reinforcing ribs 135, and a welding surface is spread in a flat surface.
  • the second reinforcing ribs 135 have a reinforcing effect, the connection between the support portion 30 and the bottom wall 13 is tighter, further enhancing the strength of the tub 1, and especially the strength of the position of the air channel 10 is ensured.
  • positions of at least some of the first reinforcing ribs 31 correspond to positions of at least some of the second reinforcing ribs 135. In this way, the stress can be better transferred.
  • first reinforcing ribs 31 are penetrated through and are welded to the second reinforcing ribs 135.
  • the position where the first reinforcing ribs 31 are penetrated through may be regarded to be hollowed.
  • the first reinforcing ribs 31 may be in direct contact with and welded to the second reinforcing ribs 135.
  • the support portion 30 includes an outlet connection portion 37, and is connected to the external air channel 20, especially connected to an air inlet portion 22 of the external air channel 20.
  • the outlet connection portion 37 has a cross section larger than a flow cross section of the air channel 10.
  • the air channel 10 provides a space for heat exchange.
  • a drying process hot air carrying evaporated moisture is cooled in the air channel 10, and the moisture in the air is condensed into water and discharged.
  • the dry air then enters the external air channel 20, and re-enters the tub body 11 to heat and evaporate moisture after being heated by a heating device (not shown in the figures) in the external air channel 20.
  • the cycle repeats.
  • a heat exchange device 40 is connected to the air channel 10, and a cooling medium is introduced to exchange heat with air passing through the air channel 10.
  • the heat exchange device 40 may be a water-cooled, air-cooled, or heat-pump heat exchange device. Since these types of heat exchange devices are common in the field of washer dryers, details are not described one by one. An example in which a water-cooled heat exchange device 40 shown in FIG. 1 and FIG. 2 is used for a brief description.
  • the heat exchange device 40 is implemented as a water inlet pipe with an outlet located in the air channel 10.
  • the water inlet pipe can introduce cooling water to form a water film and/or a water curtain in the air channel 10, to cool hot and humid air in contact with the water inlet pipe, so that the moisture in the air is condensed and separated from the air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP24181967.1A 2023-07-05 2024-06-13 Trommel-waschtrockner Pending EP4495314A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310817686.2A CN119265846A (zh) 2023-07-05 2023-07-05 桶及滚筒式洗衣干衣机

Publications (1)

Publication Number Publication Date
EP4495314A1 true EP4495314A1 (de) 2025-01-22

Family

ID=91539769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24181967.1A Pending EP4495314A1 (de) 2023-07-05 2024-06-13 Trommel-waschtrockner

Country Status (2)

Country Link
EP (1) EP4495314A1 (de)
CN (1) CN119265846A (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412861A1 (de) * 2010-07-30 2012-02-01 Electrolux Home Products Corporation N.V. Maschine zum Waschen und Trocknen von Wäsche
EP3162940A1 (de) * 2015-10-30 2017-05-03 Whirlpool EMEA S.p.A Zur durchführung von mindestens einem trocknungszyklus angepasstes haushaltsgerät, wie etwa eine wasch-/trocknungsmaschine oder eine trocknungsmaschine
EP3176314A1 (de) * 2015-12-04 2017-06-07 Wuxi Little Swan Co., Ltd. Waschtrockner
CN108118505A (zh) 2016-11-30 2018-06-05 Bsh家用电器有限公司 衣物干燥器具的缸

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412861A1 (de) * 2010-07-30 2012-02-01 Electrolux Home Products Corporation N.V. Maschine zum Waschen und Trocknen von Wäsche
EP3162940A1 (de) * 2015-10-30 2017-05-03 Whirlpool EMEA S.p.A Zur durchführung von mindestens einem trocknungszyklus angepasstes haushaltsgerät, wie etwa eine wasch-/trocknungsmaschine oder eine trocknungsmaschine
EP3176314A1 (de) * 2015-12-04 2017-06-07 Wuxi Little Swan Co., Ltd. Waschtrockner
CN108118505A (zh) 2016-11-30 2018-06-05 Bsh家用电器有限公司 衣物干燥器具的缸

Also Published As

Publication number Publication date
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