EP3162951B1 - Unité de soufflage pour un appareil ménager conçu pour exécuter au moins un cycle de séchage, tel qu'un lave-linge/sèche-linge ou un sèche-linge et un tel appareil ménager comprenant ladite unité de soufflage - Google Patents

Unité de soufflage pour un appareil ménager conçu pour exécuter au moins un cycle de séchage, tel qu'un lave-linge/sèche-linge ou un sèche-linge et un tel appareil ménager comprenant ladite unité de soufflage Download PDF

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Publication number
EP3162951B1
EP3162951B1 EP15192286.1A EP15192286A EP3162951B1 EP 3162951 B1 EP3162951 B1 EP 3162951B1 EP 15192286 A EP15192286 A EP 15192286A EP 3162951 B1 EP3162951 B1 EP 3162951B1
Authority
EP
European Patent Office
Prior art keywords
blowing unit
casing
magnetic shielding
drying
tub
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
EP15192286.1A
Other languages
German (de)
English (en)
Other versions
EP3162951A1 (fr
Inventor
William PAOLINI
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.)
Whirlpool EMEA SpA
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Whirlpool EMEA SpA
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Publication date
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Priority to EP15192286.1A priority Critical patent/EP3162951B1/fr
Publication of EP3162951A1 publication Critical patent/EP3162951A1/fr
Application granted granted Critical
Publication of EP3162951B1 publication Critical patent/EP3162951B1/fr
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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
    • 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 
    • 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 
    • D06F58/26—Heating arrangements, e.g. gas heating equipment

Definitions

  • the present invention refers to a blowing unit for a household appliance adapted to perform at least a drying cycle, such as a washing/drying machine or a drying machine.
  • the present invention also refers to a household appliance adapted to perform at least a drying cycle, such as a washing/drying machine or a drying machine provided with said blowing unit.
  • Drying machines and washing/drying machines comprise a rotating drum in which the items to be dried are placed.
  • the drum is rotatably mounted in a tub.
  • a recirculation line To perform the drying through a recirculation line, the air is extracted from the tub, treated and reintroduced therein.
  • the recirculation line includes:
  • the casing is usually made of metal, such as for example stainless steel or aluminum.
  • the motor is typically an electric motor; the interaction between stator and rotor, which generates the rotary movement imparted to the impeller, is thus based on electromagnetic induction. Such interaction is influenced by the magnetic behavior of the casing, which causes a decrease in the motor performance. In particular, the Applicant has noted that this influence causes a reduction of the motor speed.
  • the basic idea of the present invention is to provide a suitable magnetic shielding between the metallic casing and the motor associated to the impeller.
  • the invention refers to a blowing unit adapted to be part of a drying system of a household appliance configured to perform at least a drying cycle, wherein said blowing unit comprises:
  • said electric motor has an output shaft associated with said impeller to drive the latter in rotation, said magnetic shielding having a through hole in which said output shaft is inserted.
  • said casing has a through hole in which said output shaft is inserted.
  • the through hole of the magnetic shielding and the through hole of the casing substantially face each other.
  • said casing has a housing wherein said magnetic shielding is mounted.
  • the through hole of said casing is substantially formed at a geometric center of said housing.
  • said magnetic shielding comprises a discoid element made of magnetic insulating material.
  • the through hole of said magnetic shielding is substantially formed at a geometric center of said discoid element.
  • said magnetic shielding has an opening for air discharge, said opening being preferably provided on said discoid element.
  • blowing unit further comprises connection elements for fixing said electric motor on said magnetic shielding.
  • said casing comprises a first semi-shell and a second semi-shell which are mutually joined to form said casing.
  • said metallic material is metal-sheet.
  • said blowing unit further comprises a heating element mounted inside said casing, preferably in said conduit.
  • the invention refers to a household appliance adapted to perform at least a drying cycle, said appliance comprising:
  • said drying system further comprises a condenser adapted to receive a flow of wet air from said tub and to make it condense and obtain dried air
  • said appliance further comprising a connection conduit adapted to guide the flow of dried air to said tub, wherein said blowing unit is interposed between said condenser and said connection conduit.
  • 1 indicates a household appliance adapted to perform at least a drying cycle.
  • the appliance 1 can be a drying machine, adapted to dry linen and/or clothes previously washed by a different machine.
  • the appliance 1 can also be a washer-drier, namely a machine capable of both washing and drying linen and/or clothes.
  • the appliance 1 is also adapted to perform at least a washing cycle.
  • the appliance 1 ( figure 1 ) comprises a drum 2 which can rotate and which is intended to house the items to be dried.
  • the appliance 1 comprises a tub 3, in which the drum 2 is rotatably mounted.
  • the appliance 1 comprises a drying system 10 which has an inlet 10a for receiving wet air from the tub 3 and an outlet 10b for providing dried air to be inserted back into the tub 3.
  • a drying system 10 which has an inlet 10a for receiving wet air from the tub 3 and an outlet 10b for providing dried air to be inserted back into the tub 3. This allows the air rich in moisture (following contact with the items to be dried contained in the drum 2 placed in the tub 3) to be taken and reintroduced into the same tub 3 after being dried and heated.
  • the appliance 1 further comprises a connection conduit 6 adapted to guide the flow of dried air from the outlet 10b of the drying system 10 to the tub 3.
  • connection conduit 6 is associated to an annular shaped gasket 7, arranged around the loading opening 7a of the tub 3 and provided with a passage to let the dried air reach the inside of the same tub 3.
  • connection conduit 6 is made of an elastomeric material, e.g. the same material as the annular gasket 7.
  • connection conduit 6 and the annular gasket 7 are made in one piece.
  • the drying system 10 comprises a condenser 4 that receives a gaseous fluid containing particles of vapor from said tub 3 and that causes at least partial condensation thereof.
  • the inlet 10a of the drying system 10 coincides with the inlet of the condenser 4.
  • the operation of the condenser 4 is per se known and will not be disclosed in further detail.
  • the drying system 10 preferably comprises a filter (not shown), associated with the inlet of the condenser 4, so as to intercept fluff and avoid propagation thereof in the subsequent components of the drying system 10.
  • the drying system 10 comprises a blowing unit 5, arranged downstream of said condenser 4 according to the direction of the air, i.e. the air coming from the tub 3 flows through the condenser 4 first, and then it flows through the blowing unit 5.
  • the blowing unit 5 is interposed between the condenser 4 and the connection conduit 6.
  • the blowing unit 5 ( figures 2-5 ) comprises casing 51 and an impeller 59 rotatably mounted into said casing 51 so as to promote the flow of air.
  • the casing 51 is made of metal, preferably of sheet metal.
  • the sheet metal of the casing 51 is preferably steel.
  • the sheet metal can be aluminum- or zinc-coated or electro-galvanized.
  • the sheet metal may be aluminum.
  • the sheet metal of the casing 51 has a thickness of less than 1 millimeter, in particular less than 0.8 mm.
  • the reduced thickness of the sheet metal allows a light structure to be created but which can at the same time provide maximum resistance to strain.
  • the casing 51 comprises a scroll 511 which surrounds the impeller 59 and a conduit 512 which extends from said scroll 511.
  • the scroll 511 is interposed between the condenser 4 and the conduit 512.
  • the conduit 512 houses a heating element 58, e.g. an electrical element, for heating the air before it flows into said connection conduit 6 and is fed back into the tub 3.
  • blowing unit 5 is of the centrifugal type.
  • the casing 51 preferably comprises, and is in particular can be made of, a first semi-shell 52 and a second semi-shell 53.
  • the first semi-shell 52 defines an upper portion of the casing 51 whereas the second semi-shell 53 defines a lower position of the same casing 51.
  • the first and the second semi-shell 52, 53 are connected to each other by a seaming.
  • the seaming allows a fast and cheap connection to be obtained, potentially even without the need to use additional interposed gaskets (which would certainly be necessary if, for example, the two semi-shells were connected through threaded connections).
  • the casing 51 is provided with a perimetral flange 54, for example formed by said seaming.
  • the structure of the casing 51 according of the present invention can be the same as the casing disclosed in said European patent publication.
  • the impeller 59 can be realized as a fan, mounted inside the casing 51.
  • the impeller 59 is driven in rotation by a respective electric motor 52'.
  • the electric motor 52' has an output shaft 52a, associated with said impeller 59 to drive the latter in rotation.
  • the impeller 59 can be fitted on said output shaft 52a ( figure 5 ).
  • the blowing unit 5 is provided with a magnetic shielding 56 interposed between the electric motor 52' and the casing 51.
  • the magnetic shielding 56 is made of magnetic shielding material, such as for example plastic material.
  • the metallic structure of the casing 51 does not negatively affect the performances of the electric motor 52'.
  • the casing 51 has a housing 57 wherein the magnetic shielding 56 is mounted.
  • the housing 57 has preferably a shape that is complementary to the shape of the magnetic shielding 56, in particular complementary to the perimetral profile and lower surface of the magnetic shielding 56.
  • the magnetic shielding 56 comprises a discoid element 561 made of magnetic shielding material.
  • the discoid element can be made of plastic material.
  • the magnetic shielding 56 is mounted on the casing 51, preferably on the first semi-shell 52 of the casing 51.
  • the constraint between the magnetic shielding 56 and the casing 51 can be obtained by any suitable fixing technique such as, for example, a threaded connection, a snap connection, a bayonet coupling, etc..
  • the magnetic shielding 56 has a through hole 56a in which the output shaft 52a of the electric motor 52' is inserted.
  • the through hole 56a of the magnetic shielding 56 is formed in a geometric center of the discoid element 561.
  • the discoid element 561 is provided with a tapered protrusion 563, extending downward towards the casing 51.
  • the housing 57 has a recess 571 for housing said tapered protrusion 563.
  • the recess 571 has a shape that is complementary to the shape of the tapered protrusion 563.
  • the tapered protrusion 563 is provided around the through hole 56a of the shielding 56.
  • the casing 51 has a through hole 51' in which the output shaft 52a is inserted.
  • the through hole 51' of the casing 51 is formed on the first semi-shell 52.
  • the through hole 51' of the casing 51 is substantially formed at a geometric center of the housing 57.
  • the recess 571 is provided around the through hole 51' of the casing 51.
  • the through hole 56a of the magnetic shielding 56 and the through hole 51' of the casing 51 substantially face each other.
  • the output shaft 52a of the electric motor 52' passes through the magnetic shielding 56 first, then through the casing 51, and finally it engages the impeller 59.
  • the magnetic shielding 56 has an opening 56b for air discharge.
  • the opening 56b can be provided on the discoid element 561.
  • the opening 56b is associated to a discharge conduit 56c, extending from the discoid element 561 away from the casing 51.
  • the task of the opening 56b and the respective discharge conduit 56c is to provide a discharge path to the air when, in a washer-drier, water is loaded in the tub 3 and the air present therein needs to be evacuated, so as to free volume for the incoming water.
  • the blowing unit 5 further comprises connection elements 562 for fixing the electric motor 52' on the magnetic shielding 56, in particular on the discoid element 561.
  • connection elements 562 can comprise:
  • the drying system 10 is operated so as to withdraw wet air from the tub 3 through inlet 10a and provide dried hot air at the outlet 10b.
  • the wet air flowing through the inlet 10a is first condensed by condenser 4; then the air passes through the blowing unit 5: the impeller 59 first, and then the conduit 512.
  • the air is also heated by heating element 58. The dried and heated air is then fed back into the tub 3 through the connection conduit 6.

Landscapes

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

Claims (15)

  1. Unité de soufflage (5) adaptée pour faire partie d'un système de séchage (10) d'un appareil électroménager (1) configuré pour réaliser au moins un cycle de séchage, dans laquelle ladite unité de soufflage (5) comprend :
    a. un boîtier (51) réalisé en matériau métallique ;
    b. une turbine (59) montée en rotation dans ledit boîtier (51) ;
    c. un moteur électrique (52') monté sur ledit boîtier et adapté pour entraîner ladite turbine (59) en rotation ;
    ladite unité de soufflage (5) étant caractérisée en ce qu'elle comprend en outre :
    d. un blindage magnétique (56) intercalé entre ledit moteur électrique (52') et ledit boîtier (51).
  2. Unité de soufflage (5) selon la revendication 1, dans laquelle ledit moteur électrique (52') a un arbre de sortie (52a) associé à ladite turbine (59) pour entraîner cette dernière en rotation, ledit blindage magnétique (56) ayant un trou traversant (56a) dans lequel est inséré ledit arbre de sortie (52a).
  3. Unité de soufflage (5) selon la revendication 1 ou 2, dans laquelle ledit boîtier (51) a un trou traversant (51') dans lequel est inséré ledit arbre de sortie (52a).
  4. Unité de soufflage (5) selon les revendications 2 et 3, dans laquelle le trou traversant (56a) du blindage magnétique (56) et le trou traversant (51') du boîtier (51) se font sensiblement face l'un l'autre.
  5. Unité de soufflage (5) selon l'une quelconque des revendications précédentes, dans laquelle ledit boîtier (51) a un logement (57) dans lequel est monté ledit blindage magnétique (56).
  6. Unité de soufflage (5) selon les revendications 3 et 5, dans laquelle le trou traversant (51') dudit boîtier (51) est formé sensiblement au niveau d'un centre géométrique dudit logement (57).
  7. Unité de soufflage (5) selon l'une quelconque des revendications précédentes, dans laquelle ledit blindage magnétique (56) comprend un élément discoïde (561) réalisé en matériau isolant magnétique.
  8. Unité de soufflage (5) selon la revendication 7 et l'une quelconque des revendications précédentes lorsqu'elle dépend de la revendication 2, dans laquelle le trou traversant (56a) dudit blindage magnétique (56) est formé sensiblement au niveau d'un centre géométrique dudit élément discoïde (561).
  9. Unité de soufflage (5) selon l'une quelconque des revendications précédentes, dans laquelle ledit blindage magnétique (56) a une ouverture (56b) pour l'évacuation d'air.
  10. Unité de soufflage (5) selon l'une quelconque des revendications précédentes, comprenant en outre des éléments de raccordement (562) pour fixer ledit moteur électrique (52') sur ledit blindage magnétique (56).
  11. Unité de soufflage (5) selon l'une quelconque des revendications précédentes, dans laquelle ledit boîtier (51) comprend une première demi-coque (52) et une seconde demi-coque (53) qui sont assemblées mutuellement pour former ledit boîtier (51).
  12. Unité de soufflage (5) selon l'une quelconque des revendications précédentes, dans laquelle ledit matériau métallique est une tôle en métal.
  13. Unité de soufflage (5) selon l'une quelconque des revendications précédentes, comprenant en outre un élément chauffant (58) monté à l'intérieur dudit boîtier (51).
  14. Appareil électroménager adapté pour réaliser au moins un cycle de séchage, ledit appareil (1) comprenant :
    a. une cuve (3) dans laquelle un tambour (2) est monté en rotation ;
    b. un système de séchage (10), ayant un orifice d'admission (10a) pour recevoir de l'air humide en provenance de ladite cuve (3) et un orifice de refoulement (10b) pour fournir de l'air séché à ladite cuve (3), ledit système de séchage (10) comprenant une unité de soufflage (5) selon l'une quelconque des revendications précédentes pour favoriser un flux d'air à l'intérieur dudit système de séchage (10).
  15. Appareil électroménager selon la revendication 14, dans lequel ledit système de séchage (10) comprend en outre un condenseur (4) adapté pour recevoir un flux d'air humide en provenance de ladite cuve (3) et pour l'amener à se condenser et obtenir de l'air séché, ledit appareil (1) comprenant en outre un conduit de raccordement (6) adapté pour guider le flux d'air séché vers ladite cuve (3), dans lequel ladite unité de soufflage (5) est intercalée entre ledit condenseur (4) et ledit conduit de raccordement (6).
EP15192286.1A 2015-10-30 2015-10-30 Unité de soufflage pour un appareil ménager conçu pour exécuter au moins un cycle de séchage, tel qu'un lave-linge/sèche-linge ou un sèche-linge et un tel appareil ménager comprenant ladite unité de soufflage Active EP3162951B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15192286.1A EP3162951B1 (fr) 2015-10-30 2015-10-30 Unité de soufflage pour un appareil ménager conçu pour exécuter au moins un cycle de séchage, tel qu'un lave-linge/sèche-linge ou un sèche-linge et un tel appareil ménager comprenant ladite unité de soufflage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15192286.1A EP3162951B1 (fr) 2015-10-30 2015-10-30 Unité de soufflage pour un appareil ménager conçu pour exécuter au moins un cycle de séchage, tel qu'un lave-linge/sèche-linge ou un sèche-linge et un tel appareil ménager comprenant ladite unité de soufflage

Publications (2)

Publication Number Publication Date
EP3162951A1 EP3162951A1 (fr) 2017-05-03
EP3162951B1 true EP3162951B1 (fr) 2018-07-18

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EP15192286.1A Active EP3162951B1 (fr) 2015-10-30 2015-10-30 Unité de soufflage pour un appareil ménager conçu pour exécuter au moins un cycle de séchage, tel qu'un lave-linge/sèche-linge ou un sèche-linge et un tel appareil ménager comprenant ladite unité de soufflage

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7427035B2 (ja) * 2019-10-28 2024-02-02 无▲錫▼▲飛▼▲リン▼▲電▼子有限公司 衣類処理装置のファンアセンブリ及び衣類処理装置

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JP4804843B2 (ja) * 2005-09-12 2011-11-02 シチズンマイクロ株式会社 磁気式エンコーダ付きモータ
US9080279B2 (en) * 2011-10-24 2015-07-14 Lg Electronics Inc. Washing machine to produce three-dimensional motion
ITPR20120071A1 (it) 2012-10-23 2014-04-24 Indesit Co Spa Dispositivo di asciugatura con soffiante

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