AU2014401951B2 - Laundry washing-drying machine and bellow for a laundry washing-drying machine - Google Patents
Laundry washing-drying machine and bellow for a laundry washing-drying machine Download PDFInfo
- Publication number
- AU2014401951B2 AU2014401951B2 AU2014401951A AU2014401951A AU2014401951B2 AU 2014401951 B2 AU2014401951 B2 AU 2014401951B2 AU 2014401951 A AU2014401951 A AU 2014401951A AU 2014401951 A AU2014401951 A AU 2014401951A AU 2014401951 B2 AU2014401951 B2 AU 2014401951B2
- Authority
- AU
- Australia
- Prior art keywords
- bellow
- protrusion
- duct
- projection portion
- drying machine
- 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.)
- Ceased
Links
- 238000001035 drying Methods 0.000 title claims abstract description 35
- 238000007605 air drying Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 206010061876 Obstruction Diseases 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000010981 drying operation Methods 0.000 description 3
- 239000003599 detergent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010412 laundry washing Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- 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
- D06F37/26—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
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
- D06F58/04—Details
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
A laundry washing-drying machine comprising: a casing; a tub suspended in the casing; an elastically deformable bellow having a ring shaped main portion sealingly connected to the casing and to the tub, at a door of the machine; a projection portion, made in one piece with the main portion and radially extending from the main portion to a distal end; a dry air duct, supported in the casing and fixedly connected to an air drying unit, and having a downstream end; a bellow duct formed within the projection portion of the bellow, from an inlet mouth, formed at the distal end of the projection portion and connected to the downstream end of the dry air duct, to an outlet mouth, formed in the main portion of the bellow, at the projection portion, and open into the tub. The projection portion of the bellow has a substantially flat shape, with two major sides and two minor sides, and the bellow duct comprises at least a protrusion, internally formed in one of the major sides. Thus, the risk of obstructions of the bellow duct because of deformations induced by vibrations is avoided, thanks to the protrusion.
Description
Laundry washing-drying machine and bellow for a laundry washing-drying machine
FIELD OF THE INVENTION
The present invention concerns the technical field of laundry washing-drying machines.
BACKGROUND ART
Laundry washing-drying machines (i.e. laundry washing machines which can also dry laundry) are well known and widespread.
The washer-dryer comprises an air circuit for carrying out drying operation by circulating hot air through a laundry container, like a drum rotatably mounted in a tub. Air circulating means and heating means are provided in the air circuit for circulating and heating drying air, respectively. In a known configuration, the air circuit includes a dry air duct that receives hot and dry air from an air drying unit and delivers it to the laundry container, through a duct formed in the bellow (or bellow duct) that is normally provided at the door of the machine, sealingly engaged to both the casing and the tub.
The bellow duct -thanks to its own elasticity- acts as a vibration-isolating section in the air circuit, thus preventing that the inevitable vibrations of the tub due to rotation of the drum possibly damage the elements that are fixedly, i.e. stationarily, mounted on the casing, such as the dry air duct and all the air drying unit.
zu Any reference herein to known prior art does not, unless the contrary indication appears, constitute an admission that such prior art is commonly known by those skilled in the art to which the invention relates, at the priority date of this application.
DISCLOSURE OF INVENTION
The Applicant has noted that in certain conditions the bellow duct can be so deformed by vibrations of the tub that the passage of air results to be obstructed, partially or even totally; when obstruction occurs, the efficiency of the drying operation is worsened or even -in the worst casethe air drying unit can be damaged. This can happen in particular when the structure of the bellow duct is very soft: a very soft bellow duct can perform very well its fundamental vibration damping functions, but it is also more subject to the above described risk of obstruction.
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2014401951 05 Dec 2018
The Applicant has thus thought to address this problem not by carefully designing the bellow duct, so as to limit its deformability to an extent that obstruction is not risked, rather by providing the bellow duct with something preventing that a deformation results in an obstruction.
Therefore, in a first aspect, the present invention relates to a laundry washing-drying machine, as well as to a bellow for a laundry washing-drying machine.
In particular, the laundry washing-drying machine according to the first aspect of the invention comprises:
- a casing;
- a tub suspended in the casing;
- an elastically deformable bellow having
- a ring shaped main portion sealingly connected to the casing and to the tub, at a door of the machine, and
- a projection portion, made in one piece with the main portion and radially extending from the main portion to a distal end;
- a dry air duct, supported in the casing and fixedly connected to an air drying unit, and having a downstream end;
- a bellow duct formed within the projection portion of the bellow, from an inlet mouth, formed at the distal end of the projection portion and connected to the downstream end of the dry air duct, to an outlet mouth, formed in the main portion of the bellow, at the projection portion, and open into the tub;
characterised in that the projection portion of the bellow has a substantially flat shape, with two major sides and two minor sides, and the bellow duct comprises at least a protrusion, internally formed in one of the major sides.
By radially extending as referred to the projection portion of the bellow it is meant that it extends from the main portion in a direction away from the axis of the bellow, or away from the axis of the tub (that may be the same). This does not imply that the extension of the projection portion is exactly and fully radial, be intended that it can slightly depart from an exactly radial direction.
In such a machine, the risk of obstructions of the bellow duct because of deformations induced by vibrations is avoided, thanks to the protrusion, that provides a separation effect: in case of very large deformation, the protrusion rests against the opposite side of the bellow duct, avoiding that the two facing sides of the bellow duct contact directly one against the other, thus obstructing the passage of air. Having avoided this risk, the bellow duct can be advantageously made flat, even very flat: a flat shape confers high flexibility to the bellow duct, which means improved capability of absorbing vibrations. Also, another considerable advantage of the flat shape of the below duct is
P5117AU00
2014401951 05 Dec 2018 the reduction of the space that is needed to accommodate the duct within the casing; this advantage is very important particularly in domestic appliances, where dimensions have to be limited or standardized. It is also to be noticed that all these advantages are achieved without having complicated the assembly process of the machine, as the protrusion is not an additional part: it is formed together with the bellow, as a single piece.
Preferably, the protrusion is fin shaped, oriented longitudinally along the bellow duct. By fin shaped it is meant that the front section of the protrusion in the sense of the flow of air within the duct is minimal, while its length can be much longer. With this configuration the protrusion affects only minimally the flow of air, while still having a significant dimension in one direction, this being important to avoid the contact of the facing sides of the bellow duct along the full length of the duct.
Preferably, the protrusion is formed at a central location of the major side. Central position maximises the separation effect between the facing sides.
Preferably, the protrusion is extended from one to the other of the major sides. This can result in a better capability of withstanding deformations, as the protrusion is already in contact with both facing sides; its action is immediately available upon deformation of the bellow duct, without having to wait that the two facing sides get closer enough to have the protrusion contact the opposite side.
In a preferred embodiment, the protrusion is in form of a wall extending from and solid to both the major sides. In this way, the further advantage is achieved of having a structure of the projection portion of the bellow that is more efficient in dampening vibrations, thanks to the wall between the major sides.
The bellow for a laundry washing-drying machine according to the second aspect of the invention, in particular, is made of an elastically deformable material and comprises:
- a ring shaped main portion with a first, external rim intended to be sealingly mounted to a casing of the laundry washing-drying machine and a second, internal rim intended to be sealingly mounted to a tub of the laundry washing-drying machine;
- a projection portion, made in one piece with the main portion and radially extending from the main portion to a distal end;
- a bellow duct formed within the projection portion of the bellow, extending from an inlet mouth, formed at the distal end of the projection portion and intended to be connected to a downstream end of a dry air duct connected to an air drying unit of the laundry washing-drying machine, to an outlet mouth, formed in the main portion of the bellow, at the projection portion, and open towards the tub of the laundry washing-drying machine;
characterised in that the projection portion of the bellow has a substantially flat shape, with two major sides and two
P5117AU00
2014401951 05 Dec 2018 minor sides, and the bellow duct comprises at least a protrusion, internally formed in one of the major sides.
The advantages of this bellow are those already presented with reference to the laundry washingdrying machine.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features and advantages of the invention will better appear from the following description of an exemplary and non-limitative embodiment, to be read with reference to the attached drawings, wherein:
- fig. 1 is a perspective view of a laundry washing-drying machine according to the invention, with some parts removed to better show the inside of the machine, in particular the tub, the air drying unit and the bellow;
- fig. 2 is a perspective view of parts of the machine of fig. 1, including the tub, the air drying unit and the bellow;
- fig. 3 is a side view of the parts of the machine of fig. 2;
- fig. 4 is a perspective view of the parts of the machine of fig. 2, in an enlarged view and with the projection portion of the bellow and the dry air duct in section, in order to show the inside of the bellow duct;
- fig. 5 is a longitudinal section view of the bellow, at the projection portion, in a plane substantially parallel to the front of the machine;
- fig. 6 is a longitudinal section view of the bellow, at the projection portion, in a plane substantially perpendicular to the front of the machine;
- fig. 7 is a view from above of the bellow, at the projection portion;
- fig. 8 is a longitudinal section view similar to fig. 6, showing a different embodiment of the invention;
- fig. 9 is a view from above similar to fig. 7, of the embodiment of fig. 8.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION
In the drawings, a laundry washing-drying machine 1 made according to the present invention is shown.
In the following, with the terms “downstream” and/or “upstream”, a position with reference to the 30 direction of flow of a fluid inside a conduit or duct is indicated. Additionally, in the present context, the terms “vertical” and “horizontal” are referred to the positions of elements with respect to the laundry washing-drying machine 1 in its normal installation and functioning position. Indeed, a horizontal plane (X,Y) formed by two horizontal X,Y perpendicular directions is defined, and a vertical direction Z, perpendicular to the horizontal plane, is defined as well in a 3-D space.
P5117AU00
2014401951 05 Dec 2018
Laundry washing-drying machine 1 comprises an outer box casing 10, preferably but not necessarily parallelepiped-shaped, and a tub 11 suspended in the casing 10. For example, the tub 10 has the shape of a hollow cylinder having horizontal axis. In the tub 11, a drum (not visible in the drawings) is rotatably mounted for housing the laundry and in general the clothes and garments to be washed and/or dried.
Access to the drum is provided via a front door (not shown in the drawings), preferably hinged to casing 10; the door can open and close an opening 12 formed in the drum and a corresponding opening (not shown) in the casing 10, according to design options per se well known in the art.
Casing 10 generally includes a front panel (not shown), a rear panel 13 and two side panels 14, 15, all mounted on a basement 16. Panels 13-15 and basement 16 can be of metal sheet.
Laundry washing-drying machine 1 also comprises typical components of a machine of this kind, such as an electric motor assembly (not shown) for rotating, on command, the drum about its axis in the tub 11, as well as an air drying unit 17 where dry warm air is produced and a dry air duct 18, fixedly connected to the air drying unit 17 and receiving warm dry air therefrom; the air drying unit 17 is fixedly mounted to the casing 10, so is the dry air duct 18. Water and detergent dispensing devices are also provided within the casing 10. The casing 10, the drum, the door, the motor, the air drying unit 17, the dry air duct 18, water and detergent dispensing devices are common parts in the technical field and are considered to be known; therefore they will not be described in further details.
At the door, a bellow 20 made of elastically deformable material is provided. The bellow 20 includes a ring shaped main portion 21, sealingly connected to both the casing 10 and the tub11, at the opening 12, by means of respective external and internal rims 22 and 23. The main portion 21 of the bellow 20 also offers an elastically deformable contact seat for the door itself.
The bellow 20 includes also a projection portion 30 that is made of the same material and in one and the same piece with the main portion 21. The projection portion 30 extends from the main portion 21, at an upper position of the opening 12, to a distal end 31, somewhat radially remote from the main portion 21.
A bellow duct 32 is formed within the projection portion 30 of the bellow 20. The bellow duct 32 extends from an inlet mouth 33, formed at the distal end 31 of the projection portion 30 to an outlet mouth 34, formed in the main portion 21 of the bellow 20, at the projection portion 30. The inlet mouth 33 is connected to a downstream end 19 of the dry air duct 18; the outlet mouth 34 is open towards the tub 11 of the laundry washing-drying machine 1.
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2014401951 05 Dec 2018
The projection portion 30 of the bellow 20 has a substantially flat shape, with two major sides 36, 37 and two minor sides 38, 39; the major 36, 37 are substantially planar, while the minor sides 38, 39 are rounded, so the overall shape of the cross section of the projection portion 30 and of the bellow duct 32 formed therein is a flat rounded shape, as better visible in figure 7.
The bellow duct 32 comprises at least a protrusion 40, internally formed in the bellow duct 32 on one of the major sides, e.g. the major side 36. The protrusion 40 is preferably fin shaped (in the sense define above), oriented longitudinally along the bellow duct 32. Preferably, the protrusion 40 is formed at a central location of the major side 36, both in a transverse direction (between the minor sides 38, 39) and in a longitudinal direction (between the inlet mouth 33 and the outlet mouth 34).
It should be noted that more than one protrusion 40 can be provided in the bellow duct 32, e.g. two or more protrusions 40 distributed between the two major sides 36 and 37.
Preferably, the protrusion 40 is extended from the major side 36 to the opposing major side 37, or is just minimally spaced therefrom (as can be seen in figure 7).
In figs. 8 and 9, a different preferred embodiment of the protrusion is shown; the rest of the laundry washing-drying machine is the same, so in figs. 8 and 9 only the -different- protrusion is provided with a reference number, 40', being intended that the other elements are the same.
Protrusion 40' is in the form of a wall extending from and solid to both the major sides 36 and 37 of the projection portion 30.
In use of the laundry washing-drying machine 1, like in any laundry washing-drying machines, the tub 11 vibrates, with respect to the casing 10. Vibrations could in principle be particularly dangerous for the dry air duct 18, which upstream is fixedly connected to the casing 10, while downstream has to deliver the dry air to the vibrating tub 11. The bellow duct 32 according to the invention, thanks to its high flexibility also due to its flat shape, prevents that the vibrations of the tub 11 reach the dry air duct 18 with a dangerous magnitude. At the same time, this high flexibility does not introduce any risk of obstruction of the bellow duct 32, thanks to the presence of the protrusion 40 (or 40'). Thus, the invention allows improving lifetime of the machine and efficiency of the drying operations.
Where ever it is used, the word “comprising” is to be understood in its “open” sense, that is, in the sense of “including”, and thus not limited to its “closed” sense, that is the sense of “consisting only of”. A corresponding meaning is to be attributed to the corresponding words “comprise”, “comprised” and “comprises” where they appear.
P5117AU00
2014401951 05 Dec 2018
While particular embodiments of this invention have been described, it will be evident to those skilled in the art that the present invention may be embodied in other specific forms without departing from the essential characteristics thereof. The present embodiments and examples are therefore to be considered in all respects as illustrative and not restrictive, and all modifications which would be obvious to those skilled in the art are therefore intended to be embraced therein.
Claims (10)
- Claims1. A laundry washing-drying machine, comprising:- a casing;- a tub suspended in the casing;- an elastically deformable bellow having- a ring shaped main portion sealingly connected to the casing and to the tub, at an opening thereof, and- a projection portion, made in one piece with the main portion and radially extending from the main portion to a distal end;- a dry air duct, supported in the casing and fixedly connected to an air drying unit, and having a downstream end;- a bellow duct formed within the projection portion of the bellow, from an inlet mouth, formed at the distal end of the projection portion and connected to the downstream end of the dry air duct, to an outlet mouth, formed in the main portion of the bellow, at the projection portion, and open into the tub;wherein the projection portion of the bellow has a substantially flat shape, with two major sides and two minor sides, and the bellow duct comprises at least a protrusion, internally formed in one of the major sides.
- 2. A laundry drying machine as claimed in claim 1, wherein the protrusion is fin shaped, oriented longitudinally along the bellow duct.
- 3. A laundry drying machine as claimed in claim 1 or claim 2, wherein the protrusion is formed at a central location of the major side.
- 4. A laundry drying machine as claimed in any one of preceding claims, wherein the protrusion is extended from one to the other of the major sides.
- 5. A laundry drying machine as claimed in claim 4, wherein the protrusion is in form of a wall extending from and solid to both the major sides.
- 6. A bellow for a laundry drying machine, made of an elastically deformable material, comprising:- a ring shaped main portion with a first, external rim intended to be sealingly mounted to a casing of the laundry drying machine and a second, internal rim intended to be sealingly mounted to a tub of the laundry drying machine;P5117AU002014401951 05 Dec 2018- a projection portion, made in one piece with the main portion and radially extending from the main portion to a distal end;- a bellow duct formed within the projection portion of the bellow, extending from an inlet mouth, formed at the distal end of the projection portion and intended to be connected to a downstream end of a dry air duct connected to an air drying unit of the laundry drying machine, to an outlet mouth, formed in the main portion of the bellow, at the projection portion, and open towards the tub of the laundry drying machine;wherein the projection portion of the bellow has a substantially flat shape, with two major sides and two minor sides, and the bellow duct comprises at least a protrusion, internally formed in one of the major sides.
- 7. A bellow as claimed in claim 6, wherein the protrusion is fin shaped, oriented longitudinally along the bellow duct.
- 8. A bellow as claimed in claim 6 or claim 7, wherein the protrusion is formed at a central location of the major side.
- 9. A bellow as claimed in any one of claims 6 to 8, wherein the protrusion is extended from one to the other of the major sides.
- 10. A bellow as claimed in claim 9, wherein the protrusion is in form of a wall extending from and solid to both the major sides.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13182329.6 | 2013-08-30 | ||
EP13182329.6A EP2843099B1 (en) | 2013-08-30 | 2013-08-30 | Laundry washing-drying machine and bellow for a laundry washing-drying machine |
PCT/EP2014/066399 WO2016015762A1 (en) | 2014-07-30 | 2014-07-30 | Laundry washing-drying machine and bellow for a laundry washing-drying machine |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2014401951A1 AU2014401951A1 (en) | 2016-03-10 |
AU2014401951B2 true AU2014401951B2 (en) | 2019-01-17 |
Family
ID=51229925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2014401951A Ceased AU2014401951B2 (en) | 2013-08-30 | 2014-07-30 | Laundry washing-drying machine and bellow for a laundry washing-drying machine |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN105531416A (en) |
AU (1) | AU2014401951B2 (en) |
WO (1) | WO2016015762A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017005313A1 (en) * | 2015-07-07 | 2017-01-12 | Arcelik Anonim Sirketi | Door boot gasket for laundry washer-dryer |
EP3320139B1 (en) * | 2015-07-08 | 2019-02-13 | Arçelik Anonim Sirketi | Laundry washer-dryer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010214B3 (en) * | 2007-02-28 | 2008-01-31 | Miele & Cie. Kg | Seal for front-loading washing machine has S-shaped cross-section with internal bracing cups |
US20120011893A1 (en) * | 2009-05-28 | 2012-01-19 | Kwon Ig Geun | Laundry machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101016307B1 (en) * | 2004-02-13 | 2011-02-22 | 엘지전자 주식회사 | Gasket of drum washer |
US8109121B2 (en) * | 2007-09-13 | 2012-02-07 | Lg Electronics Inc. | Drum type washing machine with gasket drain |
KR101700188B1 (en) * | 2008-12-30 | 2017-01-26 | 엘지전자 주식회사 | Laundry machine |
-
2014
- 2014-07-30 CN CN201480050282.4A patent/CN105531416A/en active Pending
- 2014-07-30 WO PCT/EP2014/066399 patent/WO2016015762A1/en active Application Filing
- 2014-07-30 AU AU2014401951A patent/AU2014401951B2/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010214B3 (en) * | 2007-02-28 | 2008-01-31 | Miele & Cie. Kg | Seal for front-loading washing machine has S-shaped cross-section with internal bracing cups |
US20120011893A1 (en) * | 2009-05-28 | 2012-01-19 | Kwon Ig Geun | Laundry machine |
Also Published As
Publication number | Publication date |
---|---|
AU2014401951A1 (en) | 2016-03-10 |
CN105531416A (en) | 2016-04-27 |
WO2016015762A1 (en) | 2016-02-04 |
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Legal Events
Date | Code | Title | Description |
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DA3 | Amendments made section 104 |
Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE PRIORITY DETAILS TO READ 13182329.6 30 AUG 2013 EP |
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FGA | Letters patent sealed or granted (standard patent) | ||
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |