EP2559804A1 - Appareil domestique comprenant une unité de commande pour pompe à chaleur - Google Patents

Appareil domestique comprenant une unité de commande pour pompe à chaleur Download PDF

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Publication number
EP2559804A1
EP2559804A1 EP11382281A EP11382281A EP2559804A1 EP 2559804 A1 EP2559804 A1 EP 2559804A1 EP 11382281 A EP11382281 A EP 11382281A EP 11382281 A EP11382281 A EP 11382281A EP 2559804 A1 EP2559804 A1 EP 2559804A1
Authority
EP
European Patent Office
Prior art keywords
household appliance
driving unit
speed
driving
fixing members
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.)
Withdrawn
Application number
EP11382281A
Other languages
German (de)
English (en)
Inventor
José Ignacio Abaigar Merino
Pilar Balerdi Azpilicueta
Roberto San Martin Sancho
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 Electrodomesticos Espana SA
Original Assignee
BSH Electrodomesticos Espana SA
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 Electrodomesticos Espana SA filed Critical BSH Electrodomesticos Espana SA
Priority to EP11382281A priority Critical patent/EP2559804A1/fr
Priority to PCT/EP2012/065977 priority patent/WO2013024127A1/fr
Publication of EP2559804A1 publication Critical patent/EP2559804A1/fr
Withdrawn legal-status Critical Current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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements

Definitions

  • the invention relates to a household appliance comprising a driving unit for a heat pump, in which the driving unit is fastened by a mechanical fastening device.
  • the invention also relates to methods for controlling such driving unit.
  • US 7,866,057 B2 discloses a domestic appliance for the care of washed articles.
  • the appliance disclosed includes a heat pump having a compressor and a supplementary heat exchanger. Using a spring element the supplementary heat exchanger is pressed onto cooling elements to guarantee effective thermal coupling.
  • vibrations may occur at a rotating frequency or driving speed that is close or within a natural frequency of the appliance or a part thereof.
  • a natural frequency is defined to be a frequency of vibration of the appliance or a part thereof where a vibrational resonance occurs.
  • Such natural frequency may also depend on the fixation or connection of the compressor. This fixation is commonly achieved by using a continuous metal bolt that rigidly fastens the compressor to another component of the household appliance, for example to a bottom group made of molded plastic or sheet metal.
  • the compressor may also exert a variable gas compression torque with low piston inertia. Both effects cause noise and vibration.
  • a household appliance comprising a driving unit for a heat pump, in which the driving unit is connected by a mechanical fastening connection or device to another component of the household appliance, and in which the mechanical fastening device comprises a first fixing member fixed to the driving unit, a second fixing member fixed to the other component of the household appliance, and an elastic grommet connecting the fixing members to each other.
  • a load from the driving unit to the other component of the household appliance is in at least one section only transmitted by the elastic grommet.
  • a rigid or inelastic body like a metal bolt.
  • the driving unit is fixed to the household appliance free of rigid or inelastic fixing elements directly connecting the driving unit and the household appliance. Thereby a considerable degree of vibrational decoupling of the driving unit from other parts of the appliance is achieved.
  • the household appliance may be any household appliance. It is particularly advantageous that the household appliance is a cooling appliance, an air conditioner or a clothes conditioning appliance.
  • the clothes conditioning device may be a clothes drying appliance, in particular a dryer or a washer-dryer.
  • the clothes drying appliance may be a tumble dryer.
  • the household appliance in particular comprises a heat pump.
  • the "other part" of the household appliance may, e.g., be a frame, a mount, a bottom group, or an intermediate structural part of the household appliance (like a stiffening plate).
  • a "heat pump” may be any suitable heat recovery unit that utilises a driving unit for its operation.
  • the elastic grommet is integrally formed with at least one of the fixing members.
  • This provides a firm connection and allows an easy assembly.
  • the at least one of the fixing member and the grommet could be pressed into each other, could be connected by adhesive bonding, or by inserting one into a cavity or recess of the other.
  • other connecting steps like inserting or screwing the fixing members into the grommet can provide a viable connection of the grommet and the fixing members, too.
  • the material of the elastic grommet is cast or moulded to at least one of the fixing members.
  • This provides a particularly simple and reliable connection between the grommet and the at least one of the fixing members.
  • the casting or moulding may in particular be achieved by over-injection.
  • the fixing members are preferredly made from metal. Furthermore, metal can be fixed to the grommet in an easy, non-destructive manner.
  • the elastic grommet is made from or comprises plastic, in particular from synthetic rubber but possibly also including natural rubber.
  • the plastic may in particular be a thermo-stable plastic.
  • the plastic may comprise one plastic (component) or several plastic components, in particular a plastic compound.
  • the elastic grommet is made with, and in particular from, heat resistant material, in particular thermoplastic material.
  • the material should resist temperatures up to 90 °C or 100 °C.
  • Thermoplastic material is particularly useful for casting or moulding.
  • At least one of the fixing members comprises a threaded pin and/or at least one of the fixing members comprises a threaded hole. This allows for an easy and secure assembly and disassembly. It is one particularly preferred embodiment that one of the fixing members comprises a threaded pin and the other one of the fixing members comprises a threaded hole. This enables an anti-skewing protection of the mechanical fastening device.
  • the first fixing member may comprise the threaded pin while the second fixing member comprises the threaded hole. This allows for the fixing members to act as feet of the drive unit without being damaged.
  • the fixing members may comprise a disc-like base. From the disc-like base the threaded pin may protrude or the disc-like base may comprise the threaded hole.
  • the disc-like base (that may have a circular, three-sided, four-sided etc. basic shape) may be easily formed by casting.
  • the grommet may in particular be formed cylindrical or cuboidal; it may be formed as a solid body or may have recesses, hollows or other cavities. It is a preferred embodiment that the grommet comprises recesses in different faces, in particular in opposite faces, for receiving a respective fixing member, in particular for receiving a disc-like base of a respective fixing member.
  • the driving unit is fixed to the household appliance via two or more, in particular three, such elastic grommets. This allows for a safe and precise seat of the driving unit.
  • At least two of the elastic grommets may be integrally formed with an intermediate structural part.
  • Such intermediate structural part forms one first or second fixing member instead of a plurality of either first or second fixing members reducing the number of parts and reducing the effort when mounting the driving unit to the household appliance.
  • the driving unit is a compressor of the heat pump.
  • a compressor allows the use of widely available, effective heat pumps.
  • the use of a BLDC (BrushLess Direct Current) or PMR (Permanent Magnet Rotor) compressor is particularly advantageous.
  • the driving unit may be a driving unit of a Vuilleumier-style heat pump or Vuilleumier circuit.
  • the driving unit may be a driving unit of a Stirling-style heat pump or Stirling circuit.
  • a control circuit is arranged to limit a driving speed of the driving unit to a value below a maximum value that corresponds to a predetermined vibration threshold value. This makes use of the fact that now, with these mechanical fastening devices, significant vibrational amplitudes may occur at higher frequencies or driving speeds. Such a limitation of the driving speed avoids these significant vibrational amplitudes without a practical disadvantage since lower driving speeds are preferred for lowering energy consumption. It is a particularly preferred and advantageous embodiment that the maximum value that corresponds to a predetermined vibration threshold value lays within a range from 23 Hz to 35 Hz.
  • the object is also achieved by a method for operating a driving unit in a household appliance as described above, wherein a driving speed, in particular a compressor rotating speed, is restricted to be below a predetermined vibration threshold value, in particular to a maximum value that corresponds to a predetermined vibration threshold value within a range from 23 Hz to 35 Hz.
  • a driving speed in particular a compressor rotating speed
  • a predetermined vibration threshold value in particular to a maximum value that corresponds to a predetermined vibration threshold value within a range from 23 Hz to 35 Hz.
  • the object is further achieved by a method for operating a driving unit in a household appliance as described above, wherein at least one speed band of the driving speed, in particular of the compressor speed, is excluded.
  • the vibration threshold value and the at least one speed band may depend, e.g., on the grommet stiffness. This is based, inter alia, on the effect that a frequency response function characteristic and natural frequencies are moved to higher values with increasing grommet stiffness.
  • Fig.1 shows a partially cut-out household appliance 100 in form of a front loaded tumble dryer or washer-dryer designed for at least drying clothes 114.
  • the household appliance 100 internally comprises a driving unit 101, in particular a compressor, for a heat pump or heat pump circuit.
  • the driving unit 101 comprises fastening members 107 to be connected, via a mechanical fastening device 103, to another component of the household appliance 100 like e.g. a frame or body component of the household appliance 100.
  • this other component of the household appliance 100 is a stiffening plate 102.
  • the mechanical fastening device 103 comprises a first fixing member 105 fixed to the fastening members 107 of the driving unit 101, a second fixing member 106 fixed to the stiffening plate 102, and an elastic grommet 104 connecting the fixing members 105, 106 to each other and holding them together.
  • the mechanical fastening devices 103 may act as feet of the driving unit 101.
  • the first fixing member 105 comprises a threaded pin 108 centrally extending from a disc-shaped base element in an upside direction.
  • the threaded pin 108 extends through a through hole of the fastening member 107 protruding from the driving unit 101 and through a washer 109.
  • a nut 110 is screwed to the threaded pin 108 protruding out of the washer 109 to fasten the first fixing member 105 to the driving unit 101.
  • the second fixing member 106 comprises a screw hole 111 that opens to its bottom.
  • a screw 112 extends through a through hole of the intermediate structural part 102 and is screwed into the threaded hole 111 of the second fixing member 106 to fasten the second fixing member 106 to the intermediate structural part 102.
  • the driving unit 101 is fixed to the household appliance 100 free of rigid or inelastic fixing elements directly connecting the driving unit 101 and the household appliance 100.
  • the elastic grommet 104 is integrally formed with the fixing members 105, 106 to connect and hold one fixing member 105 to the other fixing member 106 and to connect the driving unit 101 to the intermediate structural part 102 of the household appliance 100.
  • the material of the elastic grommet 104 is cast or moulded to the fixing members 105, 106 by over-injection of a thermo-stable compound made from synthetic material, in particular rubber.
  • Such household appliance 100 usually comprises a control circuit 113, which is arranged to control a driving speed of the driving unit 101 among other functions.
  • a control unit 113 limits a maximum driving speed of the driving unit 101 to a value below a maximum value that corresponds to a predetermined vibration threshold value.
  • This method or another method for operating the driving unit 101 may set at least one speed band exclusion of the driving speed.
  • Fig.2 shows that the driving unit 101 is fixed to the stiffening plate 102 via three such mechanical fastening devices 103 thus reducing the number of components to be handled during insertion of the driving unit 101 into the household appliance 100.
  • the elastic grommets 104 could be integrally formed at the intermediate structural part 102.
  • the stiffening plate 102 has a basically triangular shape wherein a respective fastening device 103 is fastened in each corner. This arrangement allows a high stability and offers excellent vibration reduction.
  • Fig.3 shows a side view of Fig. 2 with the fastening device 103 displayed to the left shown in a sectional view.
  • Fig.4 shows a perspective view of a section view of the household appliance 100 showing two fastening devices 103.
  • the mechanical fastening device described can be used for all kinds of driving units, in particular compressors.
  • the mechanical fastening device can be used for all types of compressors and is not restricted to rotary compressors of piston-type compressors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP11382281A 2011-08-18 2011-08-18 Appareil domestique comprenant une unité de commande pour pompe à chaleur Withdrawn EP2559804A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11382281A EP2559804A1 (fr) 2011-08-18 2011-08-18 Appareil domestique comprenant une unité de commande pour pompe à chaleur
PCT/EP2012/065977 WO2013024127A1 (fr) 2011-08-18 2012-08-16 Appareil domestique comprenant une unité d'entraînement de pompe à chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11382281A EP2559804A1 (fr) 2011-08-18 2011-08-18 Appareil domestique comprenant une unité de commande pour pompe à chaleur

Publications (1)

Publication Number Publication Date
EP2559804A1 true EP2559804A1 (fr) 2013-02-20

Family

ID=44764056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11382281A Withdrawn EP2559804A1 (fr) 2011-08-18 2011-08-18 Appareil domestique comprenant une unité de commande pour pompe à chaleur

Country Status (1)

Country Link
EP (1) EP2559804A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2743394A1 (fr) * 2012-12-14 2014-06-18 Electrolux Home Products Corporation N.V. Appareil de traitement de linge à pompe thermique
DE102013221982A1 (de) 2013-10-29 2015-04-30 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit einer Wärmepumpe
DE102014206365A1 (de) * 2014-04-03 2015-10-08 BSH Hausgeräte GmbH Haushaltsgerät umfassend ein auf einer ebenen Basis angebrachtes Funktionsteil
DE102014206650A1 (de) 2014-04-07 2015-10-08 BSH Hausgeräte GmbH Trockner mit einer vibrationsarmen Wärmepumpe und Verfahren zu seinem Betrieb
EP3135807A1 (fr) 2015-08-27 2017-03-01 BSH Hausgeräte GmbH Appareil menager comprenant une conduite anti-vibratoire et son procede de fabrication
DE102016206525A1 (de) 2016-04-19 2017-10-19 BSH Hausgeräte GmbH Wäschetrocknungsgerät mit Wärmepumpe und zugehörigem Antrieb
EP3467184A1 (fr) * 2017-10-09 2019-04-10 Whirlpool Corporation Machine de séchage de linge, en particulier une laveuse-sécheuse, équipée d'un système de pompe à chaleur
US11186943B2 (en) 2017-10-09 2021-11-30 Whirlpool Corporation Filter configured for being used in a machine for drying laundry and machine for drying laundry equipped with such a filter
EP3952032A1 (fr) 2020-08-07 2022-02-09 BSH Hausgeräte GmbH Machine électrique comprenant des éléments de contact formant une borne

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007143736A (ja) * 2005-11-25 2007-06-14 Toshiba Corp 衣類乾燥機
WO2007073052A1 (fr) * 2005-12-21 2007-06-28 Lg Electronics Inc. Compartiment destine a modulariser un systeme de pompe a chaleur dans un seche-linge, et seche-linge presentant ce compartiment
EP2163677A1 (fr) * 2008-09-11 2010-03-17 Panasonic Corporation Unité de climatisation d'air pour un sèche-linge à condensation
US7866057B2 (en) 2005-12-29 2011-01-11 Bsh Bosch Und Siemens Hausgeraete Gmbh Domestic appliance for the care of washed articles
EP2341179A1 (fr) * 2009-12-29 2011-07-06 Electrolux Home Products Corporation N.V. Séchoir à linge pour usage domestique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007143736A (ja) * 2005-11-25 2007-06-14 Toshiba Corp 衣類乾燥機
WO2007073052A1 (fr) * 2005-12-21 2007-06-28 Lg Electronics Inc. Compartiment destine a modulariser un systeme de pompe a chaleur dans un seche-linge, et seche-linge presentant ce compartiment
US7866057B2 (en) 2005-12-29 2011-01-11 Bsh Bosch Und Siemens Hausgeraete Gmbh Domestic appliance for the care of washed articles
EP2163677A1 (fr) * 2008-09-11 2010-03-17 Panasonic Corporation Unité de climatisation d'air pour un sèche-linge à condensation
EP2341179A1 (fr) * 2009-12-29 2011-07-06 Electrolux Home Products Corporation N.V. Séchoir à linge pour usage domestique

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014090778A1 (fr) * 2012-12-14 2014-06-19 Electrolux Home Products Corporation N.V. Appareil de traitement du linge à pompe à chaleur
EP2743394A1 (fr) * 2012-12-14 2014-06-18 Electrolux Home Products Corporation N.V. Appareil de traitement de linge à pompe thermique
DE102013221982A1 (de) 2013-10-29 2015-04-30 BSH Bosch und Siemens Hausgeräte GmbH Haushaltsgerät mit einer Wärmepumpe
DE102013221982B4 (de) 2013-10-29 2023-07-06 BSH Hausgeräte GmbH Haushaltsgerät mit einer Wärmepumpe
CN106661810A (zh) * 2014-04-03 2017-05-10 Bsh家用电器有限公司 包括安装在平面基底上的功能部件的家用器具
DE102014206365A1 (de) * 2014-04-03 2015-10-08 BSH Hausgeräte GmbH Haushaltsgerät umfassend ein auf einer ebenen Basis angebrachtes Funktionsteil
CN106661810B (zh) * 2014-04-03 2019-06-11 Bsh家用电器有限公司 包括安装在平面基底上的功能部件的家用器具
DE102014206650A1 (de) 2014-04-07 2015-10-08 BSH Hausgeräte GmbH Trockner mit einer vibrationsarmen Wärmepumpe und Verfahren zu seinem Betrieb
DE102015216441A1 (de) 2015-08-27 2017-03-02 BSH Hausgeräte GmbH Haushaltsgerät mit einer schwingungsgedämpften Rohrleitung und Verfahren zu seiner Herstellung
EP3135807A1 (fr) 2015-08-27 2017-03-01 BSH Hausgeräte GmbH Appareil menager comprenant une conduite anti-vibratoire et son procede de fabrication
DE102016206525A1 (de) 2016-04-19 2017-10-19 BSH Hausgeräte GmbH Wäschetrocknungsgerät mit Wärmepumpe und zugehörigem Antrieb
EP3235943A1 (fr) 2016-04-19 2017-10-25 BSH Hausgeräte GmbH Sèche-linge comprenant une pompe à chaleur et entraînement associé
EP3467184A1 (fr) * 2017-10-09 2019-04-10 Whirlpool Corporation Machine de séchage de linge, en particulier une laveuse-sécheuse, équipée d'un système de pompe à chaleur
US20190106832A1 (en) * 2017-10-09 2019-04-11 Whirlpool Corporation Machine for drying laundry, in particular washer-dryer, equipped with a heat pump system
US11186943B2 (en) 2017-10-09 2021-11-30 Whirlpool Corporation Filter configured for being used in a machine for drying laundry and machine for drying laundry equipped with such a filter
US11761141B2 (en) 2017-10-09 2023-09-19 Whirlpool Corporation Filter configured for being used in a machine for drying laundry and machine for drying laundry equipped with such a filter
EP3952032A1 (fr) 2020-08-07 2022-02-09 BSH Hausgeräte GmbH Machine électrique comprenant des éléments de contact formant une borne

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