EP3126763B1 - Appareil ménager à volet pivotant et procédé pour faire fonctionner un tel appareil - Google Patents

Appareil ménager à volet pivotant et procédé pour faire fonctionner un tel appareil Download PDF

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Publication number
EP3126763B1
EP3126763B1 EP15712940.4A EP15712940A EP3126763B1 EP 3126763 B1 EP3126763 B1 EP 3126763B1 EP 15712940 A EP15712940 A EP 15712940A EP 3126763 B1 EP3126763 B1 EP 3126763B1
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EP
European Patent Office
Prior art keywords
flap
shape memory
memory alloy
alloy wire
household appliance
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
EP15712940.4A
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German (de)
English (en)
Other versions
EP3126763A1 (fr
Inventor
Stefano Alacqua
Francesco Butera
Jochen HÄRLEN
Harald Joksch
Sebastian Winner
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.)
Actuator Solutions GmbH
BSH Hausgeraete GmbH
Original Assignee
Actuator Solutions GmbH
BSH Hausgeraete GmbH
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Application filed by Actuator Solutions GmbH, BSH Hausgeraete GmbH filed Critical Actuator Solutions GmbH
Publication of EP3126763A1 publication Critical patent/EP3126763A1/fr
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Publication of EP3126763B1 publication Critical patent/EP3126763B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D13/00—Stationary devices, e.g. cold-rooms
    • F25D13/02—Stationary devices, e.g. cold-rooms with several cooling compartments, e.g. refrigerated locker systems
    • F25D13/04—Stationary devices, e.g. cold-rooms with several cooling compartments, e.g. refrigerated locker systems the compartments being at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures

Definitions

  • the invention relates to a household appliance, which has a reference to a pivot axis pivotable flap.
  • the invention also relates to a method for operating a household appliance with a pivotable flap.
  • household refrigerators comprise a pivotable with respect to a pivot axis flap, which close in a first position, an opening and opens in a second position.
  • the flap can be pivoted by means of an adjusting device between the two positions back and forth.
  • Adjustment devices of conventional household refrigerators or generally conventional household appliances comprise a synchronous or stepping motor.
  • the WO 91/15724 A1 discloses a home appliance designed as a domestic refrigeration appliance, which has a relative to a pivot axis between at least two positions pivotally arranged flap and an adjusting device which is adapted to pivot the flap between the at least two positions back and forth.
  • the adjusting device comprises a wire coupled to the flap of a shape memory alloy, which shortens when heated and thereby pivots the flap from a first position to a second position.
  • the object of the present invention is to specify a domestic appliance, in particular a household refrigerating appliance, which has a flap which can be pivoted relative to a pivot axis and an improved adjusting device for pivoting the flap between at least two positions.
  • the object of the invention is achieved by a household appliance according to claim 1.
  • the household appliance according to the invention is in particular a household refrigerator, such as a household refrigerator or a Mossgefrier réelle.
  • the household appliance according to the invention is a household refrigerator with at least two temperature zones of different temperatures, such as a fridge-freezer.
  • the household appliance according to the invention accordingly comprises the flap pivotable relative to the pivot axis and the adjusting device for pivoting the flap so that it can assume at least two different positions.
  • the adjusting device comprises the wire of a shape memory alloy.
  • Shape memory alloys are also referred to as "memory metals".
  • the shape memory alloy wire is such that it contracts when heated, thus shortens its length, thereby pivoting the flap from its first position to its second position.
  • the shape memory alloy wire is such as to be cool in its cooled state by application of a force e.g. comes from a preloaded spring, pull back to its original length. This makes it possible, in particular, for the flap to pivot back into the first position.
  • the shape memory alloy wire contracts to override the spring force applied by the biased spring.
  • the adjusting device of the household appliance may comprise an electrical energy source, by means of which the wire of a shape memory alloy can be acted upon with electrical energy. If the wire made of a shape memory alloy is subjected to electrical energy, so that in particular an electric current flows through it, then it heats up.
  • the electrical energy source is e.g. an electrical voltage source whose electrical voltage is e.g. at the ends of the wire is made of a shape memory alloy.
  • the electrical energy source is e.g. from a control device of the household appliance on and off. When the electrical energy source is switched off, the wire can cool down from a shape memory alloy.
  • the shape memory alloy wire has two ends which secure the shape memory alloy wire spaced from the pivot axis to a fixed part of the household appliance.
  • the wire of a shape memory alloy is additionally fastened at a distance from the pivot axis on the flap by means of a fastening device.
  • the fastening device has a groove directed away from the pivot axis, in which the wire is guided by a shape memory alloy.
  • the shape memory alloy wire is movable along this groove, thereby at least reducing the risk of tearing when the wire is made of a shape memory alloy that is unevenly contracted.
  • the wire of a shape memory alloy is attached to the flap between its ends by means of the fastening device, in particular centrally with respect to its ends, on the flap by means of the fastening device.
  • the flap can be e.g. extend along the pivot axis by one width.
  • the length of the connecting line between those locations where the ends of the shape memory alloy wire are attached to the fixed part of the household appliance is greater than or equal to the width of the flap.
  • the fastening device is arranged centrally with respect to the width of the flap on the flap. of the wire from a shape memory alloy.
  • the fastening device comprises a flapper-mounted pocket having an opening facing away from the pivot axis and a spring-biased element within the pocket to which the shape memory alloy wire is attached, the spring-biased element being biased to form the shape memory alloy wire away from the pivot axis.
  • the bag is preferably integrally formed on the flap. Since, according to the invention, the wire of a shape memory alloy is fastened to the spring-biased element, this can give way, for example, the flap should be jammed or frozen in the case of household refrigeration appliance.
  • the spring biased member has a groove which opens away from the pivot axis and in which the wire is guided by a shape memory alloy.
  • the shape memory alloy wire is movable along this groove, thereby at least reducing the risk of tearing when the wire is made of a shape memory alloy that is unevenly contracted.
  • the household appliance according to the invention may have an opening which is closed by the flap when the flap is in its first position and which is open when the flap is in its second position.
  • the household appliance according to the invention may be designed as a household refrigerating appliance which has at least two temperature zones of different temperature, wherein the opening connects a first temperature zone of the temperature zones with a second temperature zone of the temperature zones so that cooled air can flow between the first temperature zone and the second temperature zone, when the flap is in its second position.
  • the domestic appliance embodied as a household refrigerating appliance comprises at least the first and the second temperature zones, which are to be cooled to different temperatures during operation of the household refrigerating appliance.
  • the two temperature zones are connected by means of the opening, so that cooled air can flow from the colder temperature zone into the warmer temperature zone when the flap is open.
  • An example of a household refrigerator with at least two temperature zones of different temperature is a fridge-freezer with a coolable interior and a freezer compartment. Then this opening can connect the coolable interior with the freezer compartment, so that cooled air can flow from the freezer compartment to the coolable compartment when the flap is in its second position, ie is open.
  • the cost of a coolant circuit which is provided for cooling the freezer compartment and the coolable interior, can be reduced.
  • the flap can then eg by a control device the refrigerator-freezer combination are controlled, so that the coolable interior is cooled over the freezer compartment and at least approximately has a desired temperature.
  • the adjusting device has a bi-stable mechanism coupled to the flap, which has a prestressed spring which is pretensioned in such a way that it attempts to pivot the flap into its first position.
  • the bi-stable mechanism is configured to assume a first stable state, a second stable state, a first unstable state, and a second unstable state, wherein the first stable state is associated with the first position and the second stable state is associated with the second position with the flap.
  • the flap is pivoted from its first state to its second state by heating the shape memory alloy wire.
  • the wire is cooled from a shape memory alloy and can therefore be pivoted, for example by means of a prestressed spring back into the first position.
  • the bi-stable mechanism is provided according to this variant, which holds in its second stable state, the flap in its second position even with cooled wire from a shape memory alloy and prestressed spring.
  • the bi-stable mechanism can take the two unstable states in addition to the two stable states, wherein in the first unstable state, the biased spring tries to pivot the flap towards the first position, so that when cooled wire from a shape memory alloy bi-stable mechanism its second stable state and thus holds the flap in its second position, as long as the wire is not heated from a shape memory alloy. In the second unstable state, the preloaded spring also attempts to pivot the flap toward the first position so that when the shape memory alloy wire is cold, the bi-stable mechanism assumes its first stable state and thus holds the flap in its first position while the wire is off a shape memory alloy is not heated.
  • SMA Shape Memory Alloy, English for shape memory alloy.
  • the flap with the Aktiuator is used in particular for an improvement of the air damper for controlling the air flow in so-called No Frost devices.
  • the flap, in particular the air flap is preferably pivoted with a V-shaped SMA wire as an actuator between the two positions.
  • the wire of a shape memory alloy is thereby preferably fastened in V-shape to the flap. For example, when energizing the wire of a shape memory alloy, this heats up, shortens and pulls the flap in particular against a spring force in the direction of the second position.
  • the attachment of the shape memory alloy wire is accomplished, for example, by crimping the shape memory alloy wire with another wire, e.g. a stainless steel wire, which may possibly simultaneously represent the electrical connection of the optionally existing electrical energy source.
  • the pivot axis of the flap may preferably be connected to a bi-stable mechanism. This is actuated when the flap is pivoted towards its second position, e.g. the pen, e.g. a metal pin, into the intended opening of a heart curve locks.
  • a relatively quiet, if not silent, actuator can be provided.
  • the pivoting of the flap can be relatively quiet, if not silent.
  • the structure is relatively simple.
  • the Fig. 1 shows as an example of a household appliance, a household refrigerator 1.
  • the household refrigerator 1 is in the case of the present embodiment, a so-called no-frost household refrigerator.
  • the household refrigerator 1 is in particular a fridge-freezer.
  • the household refrigerating appliance comprises a heat-insulated housing 2 with an inner container which delimits a coolable interior space 3 and a freezer space 4 arranged underneath.
  • the coolable interior 3 is separated by a heat-insulated partition 5 from the freezer compartment 4.
  • the coolable interior 3 is provided for storing refrigerated goods and is cooled during operation of the household refrigerator 1 to temperatures above freezing.
  • the freezer compartment 4 is provided for storing frozen food and is cooled during operation of the household refrigerator 1 to temperatures below freezing.
  • the household refrigerating appliance 1 has a pivotable door leaf 6 for closing the coolable interior 3 and a pivotable door leaf 7 for closing the freezer compartment 3.
  • a pivotable door leaf 6 for closing the coolable interior 3
  • a pivotable door leaf 7 for closing the freezer compartment 3.
  • the domestic refrigeration appliance 1 comprises in particular a refrigerant circuit not shown in detail for cooling the coolable interior 3 and the freezer compartment 4.
  • the refrigerant circuit comprises eg a compressor, a condenser downstream of the compressor, a condenser downstream of the condenser and an evaporator connected between the throttle device and the compressor is arranged.
  • the evaporator is coupled directly to the freezer compartment 4 or is arranged on one of the walls directed towards the freezer compartment 4.
  • an opening 8 is disposed within the partition wall 5, which by means of a in the Figures 2 and 3 shown flap 21 can be closed and opened.
  • the opening 8 is surrounded in particular by means of a frame 22 and the flap 21 is pivotally mounted with respect to a pivot axis 23 and can by means of an adjusting device 9 between a first position in which the flap 21 closes the opening 8, and a second position in which the Flap 21 opens the opening 8, are pivoted back and forth.
  • the flap 21 is preferably rectangular and has in particular a width b, which extends in the direction of the pivot axis 23, and a height h, which is aligned at right angles to the pivot axis 23.
  • the household refrigerator 1 further comprises a control device 10, which is e.g. comprises a microprocessor or microcontroller and is adapted to control the refrigerant circuit and the adjusting device 9 for the flap 21 such that the coolable interior 3 and the freezer compartment 4 have at least approximately set temperature target values.
  • the household refrigerating appliance 1 may have temperature sensors not shown in greater detail, which measure the actual temperatures of the coolable interior 3 and the freezer compartment 4.
  • the adjusting device 9 comprises a wire 24 made of a shape memory alloy.
  • the wire 24 is made of a shape memory alloy, this contracts when heated together, ie shortens its length when heated. Cools the wire 24 from a shape memory alloy, then this can be stretched again, for example by means of a biased spring 45 in its original length.
  • electrically energized by the wire 24 is made of a shape memory alloy, for example, an electrical voltage applied or the wire 24 is made of a shape memory alloy with an electric current.
  • the household refrigerating appliance 1 may comprise a voltage source (not shown in more detail) which can be activated by means of the control device 10 and connected to the wire 24 made of a shape memory alloy.
  • the wire 24 made of a shape memory alloy with its two ends spaced from the pivot axis 23 on the frame 22 in particular near the region of the flap 21 is fixed, which faces the pivot axis 23.
  • the two ends of the shape memory alloy wire 24 are secured to the frame 22 near those edges of the flap 21 which face the pivot axis 23.
  • the ends of the wire 24 are crimped from a shape memory alloy for their attachment to a further wire not shown in detail, which at the same time Connections for the voltage source can be.
  • the shape memory alloy wire 24 is secured to the flap 21 such that when it is heated, its contraction pivots the flap 21 from its first position to its second position.
  • the wire 24 is made of a shape memory alloy approximately centrally with respect to the width b of the flap 21 and spaced from the pivot axis 23 attached to the flap 21.
  • the wire 24 made of a shape memory alloy is fastened to the flap 21 approximately at half the height h.
  • the shape memory alloy wire 24 has a V shape.
  • the shape memory alloy wire 24 is fixed to the flap 21 by means of a fixing device 25.
  • the fastening device 25 is designed in two parts in the case of the present exemplary embodiment and comprises a pocket 26 fastened to the flap 21 with an opening 27 facing away from the pivot axis 23.
  • the fastening device 25 further comprises a guided inside the pocket 26 spring biased member 28 having a groove 29 within which the wire 24 is guided from a shape memory alloy.
  • the spring biased member 28 is biased to urge the shape memory alloy wire 24 away from the pivot axis 23.
  • the region of the spring-biased element 28, which has the groove 29, is located outside the pocket 26.
  • the groove 29 is opened away from the pivot axis 23.
  • the pocket 26 and the spring-biased element 28 are preferably made of plastic.
  • the pocket 26 is preferably integrally formed on the flap 21 or is preferably part of the flap 21st
  • the adjusting device 9 comprises a in the Fig. 4 shown in a perspective view bi-stable mechanism 41. Different states of the bi-stable mechanism 41 are in the FIGS. 5a-d shown.
  • the bi-stable mechanism 41 is coupled to the flap 21 and is designed to have one in the Fig. 5a shown first stable state, one in the Fig. 5c second stable state, one in the Fig. 5b first unstable state and one in the Fig. 5d having shown second unstable state.
  • the bi-stable mechanism 41 is coupled to the flap 21 so as to allow closure of the opening 8 in its first stable condition of the flap 21 so that it is pulled by the prestressed spring 45 when the shape memory alloy wire 24 has cooled first position. In its second stable state, the bi-stable mechanism 41 holds the flap 21 in its second position so that the flap 21 opens the aperture 8.
  • the bi-stable mechanism 41 comprises a component 42 which is rigidly or rigidly coupled to the flap 21 and has a surface 43 which is aligned at least approximately at right angles to the pivot axis 23. In the surface 43 a groove-shaped heart-shaped contour 44 is arranged.
  • the component 42 is preferably fixed and rigidly attached to the flap 21. It may also be part of the flap 21. Characterized in that the device 42 is rigidly connected to the flap 21 or even part of the flap 21, the component 42 pivots with a movement of the flap 21 with this.
  • the bi-stable mechanism 41 further includes the biased spring 45 which is coupled to the member 42 or the flap 21.
  • the prestressed spring 21 has two ends.
  • the prestressed spring 45 is fastened at one of its ends to the component 42 and at its other end to the frame 22 and is biased such that it is able to pull the flap 21 into its first position by means of the component 42.
  • the spring 45 may also be attached with one of its ends directly to the flap 21 and with its other end to the frame 22.
  • the bi-stable mechanism 41 further includes a guide 46.
  • the guide 46 is connected at one of its ends to the frame 22.
  • the other end of the guide 46 is designed as a pin 47 which runs in the heart-shaped contour 44.
  • the heart-shaped contour 44 are associated with the two stable and the two unstable states.
  • the component 42 pivots with the pivoting of the flap 21, so that the heart-shaped contour 44 is aligned differently depending on the position of the flap 21 and thus the pin 47 relative to the heart-shaped contour 44 depending on the position of the flap 21 at different Positions within the heart-shaped contour 44 is located.
  • the heart-shaped contour 44 is designed such that it allows the closing of the flap 21 when the bi-stable mechanism 41 or the component 42 is in its first stable state. If the bi-stable mechanism 41 or the component 42 is in the second stable state, then likewise the spring 45 tries to pull the flap 21 into its first position. Due to the heart-shaped contour 44, however, prevents the pin 47, as in the Fig.
  • FIGS. 5a-d illustrate the operation of the bi-stable mechanism 41. Closes the flap 21, the opening 8, it is in its first position in which the wire 24 is cooled from a shape memory alloy and thus pulled by means of the prestressed spring 45 in particular to its maximum length can be. In the bi-stable mechanism 41 is in its first stable state, whereby the pin 47 cooperates with the heart-shaped contour 44 of the component 42 in such a way that the flap 21 allows the opening 8 to be closed or the flap 21 allowed, 45 take their first position by means of the prestressed spring.
  • the wire 24 is heated from a shape memory alloy, in the case of the present embodiment, the control device 10 with the wire 24th power source connected to a shape memory alloy to turn on the wire 24 made of a shape memory alloy with electrical energy.
  • the wire 24 is composed of a shape memory alloy and thereby pivots the flap 21 with respect to the pivot axis 21, whereby the flap 21 opens the opening 8.
  • the device 42 pivots the device 42, whereby the pin 47 relative to the heart-shaped contour 44 as long as its position changes until the bi-stable mechanism in the Fig. 5b achieved first unstable state.
  • the flap 21 is opened slightly wider than in its second position. The flap 21 is thus pivoted beyond its second position.
  • the control device 10 turns off the power source again, causing the shape memory alloy wire 24 to cool and thereby re-engage by means of the biased spring 45 can be stretched to its original length. This allows the prestressed spring 45 to pivot the flap 21 again so that it tries to close the opening 8 again.
  • the pin 47 Due to the heart-shaped contour 44, however, the pin 47 is guided into a position within the heart-shaped contour 44, in which the bi-stable mechanism 41 and the component 42 reaches its second stable state. This is in the Fig. 5c shown. In the second stable state, however, the pin 47 prevents the member 42 from pivoting back so far that the flap 21 closes the aperture 8, thereby holding the flap 21 in its second position without the need for the shape memory alloy wire 24 heat.
  • the control device 10 switches on again the voltage source, whereby the wire 24 of a shape memory alloy contracts and thereby the flap 21 as long pivoting opens until the bi-stable mechanism in the Fig. 5d achieved second unstable state. Thereafter, the controller 10 turns off the power source again, thereby cooling the shape memory alloy wire 24 and thus being stretchable, thereby allowing the biased spring 45 to pivot the flap 21 so as to close the opening 8. Due to the heart-shaped contour 44, the pin 47 now allows pivoting of the component 42 such that the bi-stable mechanism 41 is able to assume its first stable state again, thereby also allowing the flap 21 to assume its first position around the opening 8 to close.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
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Claims (13)

  1. Appareil ménager, notamment appareil frigorifique (2) à usage domestique, présentant un volet (21) disposé de manière pivotante entre au moins deux positions par rapport à un axe de pivotement (23), et un dispositif de réglage (9) qui est conçu pour pivoter le volet (21) en va-et-vient entre les aux moins deux positions, et qui présente un fil (24) couplé au volet (21), constitué d'un alliage à mémoire de forme, lequel se rétrécit en cas d'échauffement et fait ainsi pivoter le volet (21) d'une première position en une deuxième position, le fil (24) constitué d'un alliage à mémoire de forme présentant deux extrémités à l'aide desquelles le fil (24) constitué d'un alliage à mémoire de forme est fixé sur un composant (22) stationnaire de l'appareil ménager à écart de l'axe de pivotement (23), et le fil (24) constitué d'un alliage à mémoire de forme étant en plus fixé sur le volet (21) à écart de l'axe de pivotement (23) au moyen d'un dispositif de fixation (25), caractérisé en ce que le dispositif de fixation (25) présente une poche (26) disposée sur le volet (21), munie d'une ouverture (27) détournée de l'axe de pivotement (23), et un élément (28) précontraint par ressort, guidé à l'intérieur de la poche (26), sur lequel est fixé le fil (24) constitué d'un alliage à mémoire de forme, l'élément (28) précontraint par ressort étant précontraint de manière à ce qu'il repousse de l'axe de pivotement (23) le fil (24) constitué d'un alliage à mémoire de forme.
  2. Appareil ménager selon la revendication 1, caractérisé en ce que le dispositif de réglage (9) comprend une source d'énergie électrique au moyen de laquelle le fil (24) constitué d'un alliage à mémoire de forme peut être alimenté avec de l'énergie électrique afin d'être échauffé.
  3. Appareil ménager selon la revendication 1 ou 2, caractérisé en ce que la ligne de liaison entre les points auxquels les extrémités du fil (24) constitué d'un alliage à mémoire de forme sont fixés sur le composant (22) stationnaire de l'appareil ménager, s'étend parallèlement à l'axe de pivotement (23).
  4. Appareil ménager selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'en vue de dessus, le fil (24) constitué d'un alliage à mémoire de forme est fixé sur le volet (21) entre ses extrémités au moyen du dispositif de fixation (25), notamment de manière centrée par rapport à ses extrémités, sur le volet (21) au moyen du dispositif de fixation (25).
  5. Appareil ménager selon la revendication 4, caractérisé en ce que le volet (21) s'étend le long de l'axe de pivotement (23) d'une largeur (b) et en ce que la longueur de la ligne de liaison entre les points auxquels les extrémités du fil (24) constitué d'un alliage à mémoire de forme sont fixés sur le composant (22) stationnaire de l'appareil ménager, est supérieure ou égale à la largeur (b) du volet (21), et notamment en ce que le dispositif de fixation (25) est disposé de manière centrée par rapport à la largeur (b) du volet (21).
  6. Appareil ménager selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément (28) précontraint par ressort présente une rainure (29) qui s'ouvre en étant détournée de l'axe de pivotement (23) et dans laquelle le fil (24) constitué d'un alliage à mémoire de forme est guidé.
  7. Appareil ménager selon l'une quelconque des revendications 1 à 6, caractérisé par une ouverture (8) laquelle est fermée au moyen du volet (21) lorsque le volet (21) se trouve dans sa première position, et laquelle est ouverte lorsque le volet (21) se trouve dans sa deuxième position.
  8. Appareil ménager selon la revendication 7, caractérisé en ce qu'il est réalisé comme un appareil frigorifique à usage domestique, lequel présente au moins deux zones de température de différente température, l'ouverture (8) reliant une première zone de température (3) des zones de température à une deuxième zone de température (4) des zones de température, de sorte que l'air refroidi peut circuler entre la première zone de température (3) et la deuxième zone de température (3) lorsque le volet (21) se trouve dans sa deuxième position.
  9. Appareil ménager selon la revendication 7 ou 8, caractérisé en ce qu'il est réalisé comme un combiné réfrigérateur-congélateur muni d'un espace intérieur (3) réfrigérable et d'un espace de congélation (4), l'ouverture (8) reliant l'espace intérieur (3) réfrigérable à l'espace de congélation (4) de sorte que l'air refroidi peut circuler de l'espace de congélation (4) vers l'espace intérieur (3) réfrigérable lorsque le volet (21) se trouve dans sa deuxième position.
  10. Appareil ménager selon l'une quelconque des revendications 1 à 9, caractérisé en ce que le dispositif de réglage (9) présente un mécanisme bistable (41) couplé au volet (21), lequel mécanisme présente un ressort (45) précontraint, qui est précontraint de manière à ce qu'il essaie de pivoter le volet (21) dans sa première position, et lequel mécanisme présente un premier état stable, un deuxième état stable, un premier état instable et un deuxième état instable, le premier état stable étant attribué à la première position du volet (21) et le deuxième état stable étant attribué à la deuxième position du volet (21), de sorte que le mécanisme bistable (41), dans son premier état stable, maintient le volet (21) dans sa première position, et dans son deuxième état stable, le maintient dans sa deuxième position, et en ce que le ressort (45) précontraint essaie, dans le premier état instable, de déplacer le mécanisme bistable (41) dans son deuxième état stable, et dans le deuxième état instable, de le déplacer dans son premier état stable.
  11. Appareil ménager selon la revendication 10, caractérisé en ce que le mécanisme bistable (41) comprend les composants suivants :
    - le ressort (45) précontraint, qui est précontraint de manière à ce qu'il essaie de pivoter le volet (21) dans sa première position,
    - un élément (42) ayant une surface (43) qui est orientée au moins à peu près en angle droit par rapport à l'axe de pivotement (23) et dans laquelle est disposé un contour (44) en forme de coeur, s'étendant en forme de rainure, l'élément (42) faisant partie du volet (21) ou étant relié à celui-ci de manière rigide, et l'élément (42) et le contour (44) en forme de coeur pivotant avec le volet (21) et les deux états stables et les deux états instables étant attribués au contour (44) en forme de coeur,
    - une goupille (47) ayant prise dans le contour (44) en forme de coeur, laquelle coopère avec le contour (44) en forme de coeur de manière à ce que la goupille (47) maintienne le volet (21) dans sa première position lorsque le mécanisme bistable (41) présente son premier état stable, et qu'elle maintienne le volet (21) dans sa deuxième position lorsque le mécanisme bistable (41) présente son deuxième état stable.
  12. Procédé de fonctionnement d'une appareil ménager selon la revendication 10 ou 11, présentant les étapes de procédé suivantes :
    - échauffement du fil (24) constitué d'un alliage à mémoire de forme, de sorte que celui-ci se raccourcisse et que le volet (21) pivote de sa première position au-delà de la deuxième position contre la force de ressort du ressort (45) précontraint, de sorte que le mécanisme bistable (41) prenne son premier état instable, et
    - refroidissement du fil (24) constitué d'un alliage à mémoire de forme, de sorte que le ressort (45) précontraint puisse faire pivoter le volet (21) en direction de la première position du volet (21) jusqu'à ce que le mécanisme bistable (41) atteigne son deuxième état et que le volet (21) prenne sa deuxième position.
  13. Procédé selon la revendication 12, présentant en plus les étapes de procédé suivantes :
    - échauffement du fil (24) constitué d'un alliage à mémoire de forme, de sorte que celui-ci se raccourcisse et que le volet (21) pivote de sa deuxième position au-delà de la deuxième position contre la force de ressort du ressort (45) précontraint, de sorte que le mécanisme bistable (41) prenne son deuxième état instable, et
    - refroidissement du fil (24) constitué d'un alliage à mémoire de forme, de sorte que le ressort (45) précontraint puisse faire pivoter le volet (21) en direction de la première position du volet (21) jusqu'à ce que le mécanisme bistable (41) atteigne son premier état et que le volet (21) prenne sa première position.
EP15712940.4A 2014-04-01 2015-03-31 Appareil ménager à volet pivotant et procédé pour faire fonctionner un tel appareil Active EP3126763B1 (fr)

Applications Claiming Priority (2)

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DE102014206133.4A DE102014206133A1 (de) 2014-04-01 2014-04-01 Haushaltsgerät mit einer schwenkbaren Klappe und Verfahren zum Betreiben eines Haushaltsgerätes mit einer schwenkbaren Klappe
PCT/EP2015/057008 WO2015150375A1 (fr) 2014-04-01 2015-03-31 Appareil ménager à volet pivotant et procédé pour faire fonctionner un tel appareil

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EP3126763B1 true EP3126763B1 (fr) 2018-05-16

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DE102017009055B4 (de) * 2017-09-27 2019-07-11 Audi Ag Anordnung eines eine sensoraktive Fläche aufweisenden Sensors an einem Außenanbauteil eines Fahrzeugs
DE102020215808B3 (de) 2020-12-14 2022-03-10 Conti Temic Microelectronic Gmbh Linearschrittantrieb, Antriebsanordnung, sowie Verfahren zum Betreiben eines Linearschrittantriebs

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US5144813A (en) * 1990-04-06 1992-09-08 Robertshaw Controls Company Control device having a shape memory wire, refrigerator system utilizing the control device and methods of making the same
US5083439A (en) * 1990-04-06 1992-01-28 Robertshaw Controls Company Control device having a shape memory wire, refrigerator system utilizing the control device and methods of making the same
AU1186201A (en) * 1999-09-28 2001-04-30 Arcelik A.S. Memory element controlled damper
ITTO20121038A1 (it) * 2012-12-03 2014-06-04 Elbi Int Spa Dispositivo valvolare per il controllo di un flusso di fluido, in particolare per il controllo del flusso di aria fredda in un apparecchio elettrodomestico, quale un frigorifero.

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TR201808284T4 (tr) 2018-07-23
EP3126763A1 (fr) 2017-02-08
WO2015150375A1 (fr) 2015-10-08

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