EP2628838A1 - Household appliance with a drying device - Google Patents

Household appliance with a drying device Download PDF

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Publication number
EP2628838A1
EP2628838A1 EP12401024.0A EP12401024A EP2628838A1 EP 2628838 A1 EP2628838 A1 EP 2628838A1 EP 12401024 A EP12401024 A EP 12401024A EP 2628838 A1 EP2628838 A1 EP 2628838A1
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EP
European Patent Office
Prior art keywords
mass
appliance according
household appliance
compressor
stator
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Granted
Application number
EP12401024.0A
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German (de)
French (fr)
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EP2628838B1 (en
Inventor
Patrick Grawe
Matthias Hollenhorst
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Miele und Cie KG
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Miele und Cie KG
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Priority to PL12401024T priority Critical patent/PL2628838T3/en
Priority to EP12401024.0A priority patent/EP2628838B1/en
Priority to ES12401024.0T priority patent/ES2515041T3/en
Publication of EP2628838A1 publication Critical patent/EP2628838A1/en
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    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/206—Heat pump arrangements

Definitions

  • the invention relates to a household appliance with a drying device, such as a tumble dryer, washer-dryer or dishwasher, wherein the drying is carried out by or with the assistance of a heat pump, which includes a rotary compressor, in particular a rotary piston compressor.
  • a drying device such as a tumble dryer, washer-dryer or dishwasher
  • a heat pump which includes a rotary compressor, in particular a rotary piston compressor.
  • the essential functional components of a heat pump cycle are a heat exchanger with evaporator, a condenser, a compressor and an expansion valve, see for example DE 43 04 226 A1 .
  • a capillary can be used to throttle the refrigerant.
  • the drying material is usually applied to heated air and then the moisture is condensed by cooling the drying air and thereby removed.
  • the condenser supports the heating and the evaporator the cooling.
  • Compressors were initially used with reciprocating compressors, meanwhile, more and more rotary compressors are used because they have a better efficiency. In the case of rotary compressors, in particular the rotary piston compressor is preferred.
  • the compressed material in this case refrigerant
  • refrigerant is sucked in from outside through a suction valve. It enters the stator, a stationary cylinder with an eccentric rotor (rolling piston).
  • the refrigerant at normal pressure is trapped between the stator wall and the cylindrical rotor.
  • the eccentric rotation of the rotor causes pressure fluctuations, which put the stator in torsional vibrations. These vibrations are transmitted to the connected refrigerant pipes and generate more noise in the device.
  • the pressure fluctuations lead to a problem with regard to the fatigue strength of the pipes and their connections. Cracks may occur and the resulting loss of refrigerant can cause the compressor to fail.
  • the invention thus raises the problem of reducing the noise in a household appliance of the type mentioned and to improve the fatigue strength of the pipes and connections.
  • the compressor is assigned as a vibration damper at least one oscillatory mass whose natural frequency is tuned to the torsional vibrations generated by the compressor.
  • a mass is fastened to the stator by means of a spring element.
  • the mass forms with the spring element a pendulum whose natural frequency is in a certain ratio to the frequency of the torsional vibrations to be eliminated. If the natural frequency is adjusted so that it corresponds to the frequency of the torsional vibrations, the oscillatory mass can perform large deflections, the forces at the point of the spring element are then also large. As a result, the oscillatory mass at this frequency deprives the stator of energy for its own vibrations.
  • the compressor comprises an at least approximately hollow-cylindrical stator and the oscillatory mass is arranged at least around a part of the stator jacket.
  • the compensation of the vibrations takes place close to the compressor.
  • the oscillatory mass can be designed as a sleeve.
  • the sleeve surrounds the stator jacket with at least partial interposition of an elastomer.
  • the elastomer acts as a spring element, which ensures the vibration of the mass.
  • the use of elastomer according to the invention results in a structure that is easy to manufacture, which is also more robust than, for example, a metal spring.
  • the sleeve is formed from an elastomer, to which optionally non-elastomeric parts by weight are added.
  • the elastomer acts both as a spring element and as a mass, whereby the structure is further simplified.
  • Good vibration ability is achieved if the sleeve comprises lamellae which extend at least approximately parallel to the stator axis. If the width and / or depth of the slats vary over their length and thus the mass-stiffness ratio, a broadband Tilger Mann can be achieved.
  • stator is mounted on a base plate which is fixed on the household appliance via elastic foot elements, and as a vibration damper the oscillatable mass is arranged on at least one of the foot elements.
  • the mass can also be arranged on several foot elements together an oscillatory mass. Then it is particularly advantageous if the mass is formed as at least approximately part-circular plate which surrounds the stator. On the one hand, such a construction is easily tunable with regard to its natural frequency and, on the other hand, it is easy to manufacture and assemble.
  • the foot elements prefferably have two areas, the first area extending between the base plate and the household appliance, the second area protruding beyond the base plate, and the oscillatable mass (s) being fastened to the second area (are).
  • FIG. 1 can be seen in a schematic representation of the principle of a compression heat pump 1.
  • the compression heat pump 1, short heat pump 1 has an evaporator 2, a compressor 3, a condenser 4 and an expansion valve 5, which is here indicated as a capillary tube.
  • the evaporator 2, the compressor 3, the condenser 4 and the expansion valve 5 are components of a closed circuit 6, which is flowed through by a refrigerant, starting from the evaporator 2, the compressor 3, the condenser 4, to the throttle point 5 and finally back to the evaporator 2.
  • FIG. 2 shows a schematic of a dryer 10 with such a heat pump assembly.
  • refrigerant KM is guided in a refrigerant line 11 via the evaporator 2, the compressor 3, the condenser 4, and the expansion valve (not shown).
  • the evaporator 2 and the condenser 4 of the heat pump 1 are arranged in the process air circuit 14 such that a heat exchanger 12 contains the evaporator 2, at which the moisture-laden process air PL is cooled and dehumidified by condensation.
  • the resulting condensation is collected in a condensate collection tank 13.
  • the cooled process air PL is reheated at the condenser 4 of the heat pump assembly 1 and introduced into the drying drum 15.
  • a closed process air circuit 14 is shown; an open process air duct is also conceivable, for example in the case of an exhaust air dryer or a dishwasher.
  • FIGS. 3 to 7 Now show compressor 3 of the rotary compressor type, in particular of the rotary piston compressor type, in which an inventive energy withdrawal of torsional vibrations takes place by resonance.
  • the compressor comprises an at least approximately hollow cylindrical stator 20, in which, in a known manner, a motor-driven rolling piston (not shown) rotates.
  • the stator 20 is mounted on a triangular base plate 21, which via elastic foot elements 22 on the bottom trough 23 of the dryer housing 16 (see FIG. 2 ) is mounted oscillatory.
  • three bolts 24 are screwed to the bottom tray 23, on each of which an elastomeric sleeve 25 is inserted.
  • the elastomer sleeves 25 then each take a bore (not shown) in a corner of the base plate 21.
  • a supply line 27 and a discharge line 26 are connected for the refrigerant KM, of which only one piece is shown in the drawings.
  • a liquid separator 28 is integrated in the supply line 27 in the supply line 27, a liquid separator 28 is integrated.
  • FIGS. 3 and 3a show a compressor 3 with a first embodiment of a vibration absorber.
  • a cuff 30, which is arranged around the upper area of the stator 20, is used as the oscillatable mass.
  • the sleeve 30 is formed as a two-part sheet metal assembly.
  • Each sleeve portion 31 and 32 has four c-shaped recesses 33 in the edge region, are formed by the tongue-shaped suspensions 34.
  • Means of these suspensions are attached to the inside of the sleeve parts each two elastomer rings 35, as from the synopsis of FIGS. 3 and 3a is clearly recognizable.
  • Each sleeve part has at its non-curved edges 36 bent portions 37, which form on one side a continuous contact surface 38 and on the other side a part of a male hinge 39.
  • the contact surfaces 38 are provided with an unrecognizable bore through which a bolt 40 can be inserted.
  • the two sleeve parts 31 and 32 under Liner of the elastomeric rings 35 are attached to the stator 20 around. Welding or riveting are of course also conceivable.
  • the rings 35 form spring elements which ensure the ability of the sleeve 30 to vibrate.
  • the natural frequency of this oscillatable mass can be adjusted by the mass of the sleeve 30 (influenced by its material thickness or geometry) and / or by the hardness or the geometry of the elastomer rings 35.
  • FIG. 3 are indicated by the arrow 41, the vibrations of the stator 20.
  • this goes into resonance during operation of the compressor 3 and oscillates in opposite phase to the stator 20, which is indicated by the arrow 42.
  • the compressor amplitude and thus also the vibrations of the refrigerant lines 26 and 27 are significantly reduced.
  • a collar 50 is also used as a vibratory mass.
  • the cuff 50 consists only of an elastomer. It can be slipped over the stator 20 and adheres there with appropriate design of their width by friction and adhesion. Also glued joints are conceivable. Then, instead of a closed collar, a rectangular element can be used. Slots 52 are created through slots 51 in the direction of the stator longitudinal axis, which then combine both the spring element and the oscillatable mass in a single component. The vibration ability of the fins 52 is in FIG. 4a indicated by its dashed line.
  • the foot elements 22 are formed according to a first modification 60. They have an elastomeric sleeve 25, which is extended by a circumferential bead 61. Thus, the attachment of a triangular sheet or laminated core is made possible. The sheet or laminated core then extends parallel to the base plate 21 between this and the bottom pan 23, not shown here. It serves as a vibratory mass. As a spring element, the foot element 22 itself is used here. The stiffness of the elastomer sleeves 25 and the mass or the moment of inertia of the sheet metal or laminated core must be tuned so that a resonance arises during compressor operation.
  • FIGS. 6 and 7 show compressors 3, the foot elements are formed according to a second modification 70.
  • the elastomer sleeves 25 are axially extended, but above the base plate. This results in a first region 71 between the bottom trough 23 and base plate 21 and a second region 72, which projects beyond the base plate 21.
  • the reception of one or more masses 73 or 74 takes place at this second region 72, the second region 72 itself serving as a spring element.
  • These masses 73 and 74 may be plugged, glued, vulcanized or the elastomer sleeves 25 are made so massive that they provide even enough mass to act as a vibration absorber can.
  • the Tilger Sign is in the embodiment after FIG. 6 achieved by three separate masses 73, which in contrast to the above-described embodiments mainly perform translational oscillations (arrows 75). In this variant, it may also be useful to use different masses 73 in order to damp vibrations at different frequencies.
  • the mass may also be designed as an annular or C-shaped plate 74 and be connected to several or all elastomer sleeves 25.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Compressor (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The appliance has a heat pump comprising a rotation compressor (3) such as roller piston compressor for performing a drying process. An oscillating mass is assigned to the compressor as an oscillation damper whose natural frequency is tuned on torsional vibrations produced by the compressor. The compressor comprises a hollow cylindrical stator (20) such that the oscillating mass is arranged around a part of a stator housing. The oscillating mass is formed as a sleeve that surrounds the stator housing under a partial interposition of an elastomer.

Description

Die Erfindung betrifft ein Haushaltgerät mit einer Trocknungseinrichtung, wie Wäschetrockner, Waschtrockner oder Geschirrspülmaschine, wobei die Trocknung durch oder mit Unterstützung einer Wärmepumpe erfolgt, welche einen Rotationskompressor, insbesondere einen Rollkolbenkompressor beinhaltet.The invention relates to a household appliance with a drying device, such as a tumble dryer, washer-dryer or dishwasher, wherein the drying is carried out by or with the assistance of a heat pump, which includes a rotary compressor, in particular a rotary piston compressor.

Bei Haushaltsgeräten mit einer Trocknungseinrichtung hat sich der Einsatz von Wärmepumpen zur Energieeinsparung bewährt, da durch ihre Verwendung Energie eingespart werden kann. In der Regel sind die wesentlichen Funktionsbestandteile eines Wärmepumpenkreises ein Verdampfer mit Wärmetauscher, ein Verflüssiger, ein Kompressor und ein Expansionsventil, siehe beispielsweise DE 43 04 226 A1 . Anstelle des Expansionsventils kann zur Drosselung des Kältemittels auch eine Kapillare eingesetzt werden. Bei den genannten Geräten wird in der Regel das Trocknungsgut mit erwärmter Luft beaufschlagt und anschließend wird die Feuchtigkeit durch Abkühlung der Trocknungsluft kondensiert und dadurch entfernt. Dabei unterstützen der Verflüssiger die Erwärmung und der Verdampfer die Abkühlung. Als Kompressoren kamen zunächst Kolbenkompressoren zum Einsatz, mittlerweile werden immer mehr Rotationskompressoren eingesetzt, da diese einen besseren Wirkungsgrad besitzen. Bei den Rotationskompressoren wird insbesondere der Rollkolbenkompressor bevorzugt.In household appliances with a drying device, the use of heat pumps has proven to save energy, since energy can be saved by their use. In general, the essential functional components of a heat pump cycle are a heat exchanger with evaporator, a condenser, a compressor and an expansion valve, see for example DE 43 04 226 A1 , Instead of the expansion valve, a capillary can be used to throttle the refrigerant. In the above devices, the drying material is usually applied to heated air and then the moisture is condensed by cooling the drying air and thereby removed. The condenser supports the heating and the evaporator the cooling. Compressors were initially used with reciprocating compressors, meanwhile, more and more rotary compressors are used because they have a better efficiency. In the case of rotary compressors, in particular the rotary piston compressor is preferred.

Bei allen Rotationskompressoren ist das Funktionsprinzip gleich: Durch ein Ansaugventil wird das Kompressionsgut, hier Kältemittel, von außen angesaugt. Es gelangt in den Stator, einen stationären Zylinder mit einem exzentrischen Rotor (Rollkolben). Das Kältemittel mit Normaldruck wird zwischen der Statorwand und dem zylindrischen Rotor eingeschlossen. Wenn der Rotor in die exzentrische Drehbewegung übergeht, verkleinert sich das Volumen zwischen den Lamellen des Rotors und der Statorwand, und der Kältemitteldruck steigt an. Das unter Druck stehende Kältemittel gelangt dann am Auslassventil aus dem Kompressor. Durch die exzentrische Drehung des Rotors entstehen Druckschwankungen, die den Stator in Drehschwingungen versetzen. Diese Schwingungen übertragen sich auf die angeschlossenen Kältemittelleitungen und erzeugen verstärkt Geräusche im Gerät. Im schlimmsten Fall führen die Druckschwankungen zu einem Problem hinsichtlich der Dauerfestigkeit der Rohrleitungen und ihrer Verbindungen. Es können Risse entstehen, der dadurch bedingte Kältemittelverlust kann dann einen Ausfall des Kompressors verursachen.The principle of operation is the same for all rotary compressors: the compressed material, in this case refrigerant, is sucked in from outside through a suction valve. It enters the stator, a stationary cylinder with an eccentric rotor (rolling piston). The refrigerant at normal pressure is trapped between the stator wall and the cylindrical rotor. As the rotor goes into eccentric rotation, the volume between the vanes of the rotor and the stator wall decreases, and the refrigerant pressure increases. The pressurized refrigerant then exits the compressor at the outlet valve. The eccentric rotation of the rotor causes pressure fluctuations, which put the stator in torsional vibrations. These vibrations are transmitted to the connected refrigerant pipes and generate more noise in the device. In the worst case, the pressure fluctuations lead to a problem with regard to the fatigue strength of the pipes and their connections. Cracks may occur and the resulting loss of refrigerant can cause the compressor to fail.

Der Erfindung stellt sich somit das Problem, bei einem Haushaltgerät der eingangs genannten Art die Geräuschentwicklung zu verringern und die Dauerfestigkeit der Rohrleitungen und -verbindungen zu verbessern.The invention thus raises the problem of reducing the noise in a household appliance of the type mentioned and to improve the fatigue strength of the pipes and connections.

Erfindungsgemäß wird dieses Problem durch ein Haushaltgerät mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this problem is solved by a household appliance having the features of patent claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Die mit der Erfindung erreichbaren Vorteile ergeben sich dadurch, dass dem Kompressor als Schwingungstilger mindestens eine schwingfähige Masse zugeordnet ist, deren Eigenfrequenz auf die vom Kompressor erzeugten Drehschwingungen abgestimmt ist. Zur Realisierung des Schwingungstilgers wird eine Masse mittels eines Federelements an dem Stator befestigt. Die Masse bildet mit dem Federelement ein Pendel, dessen Eigenfrequenz in einem bestimmten Verhältnis zu der zu eliminierenden Frequenz der Drehschwingungen steht. Wird die Eigenfrequenz so eingestellt, dass sie der Frequenz der Drehschwingungen entspricht, kann die schwingfähige Masse große Auslenkungen ausführen, die Kräfte am Ansatzpunkt des Federelements werden dann ebenfalls groß. Dadurch entzieht die schwingfähige Masse bei dieser Frequenz dem Stator Energie für seine eigenen Schwingungen.The achievable with the invention advantages result from the fact that the compressor is assigned as a vibration damper at least one oscillatory mass whose natural frequency is tuned to the torsional vibrations generated by the compressor. To implement the vibration absorber, a mass is fastened to the stator by means of a spring element. The mass forms with the spring element a pendulum whose natural frequency is in a certain ratio to the frequency of the torsional vibrations to be eliminated. If the natural frequency is adjusted so that it corresponds to the frequency of the torsional vibrations, the oscillatory mass can perform large deflections, the forces at the point of the spring element are then also large. As a result, the oscillatory mass at this frequency deprives the stator of energy for its own vibrations.

Es ist vorteilhaft, wenn der Kompressor einen wenigstens annähernd hohlzylindrischen Stator umfasst und die schwingfähige Masse wenigstens um einen Teil des Statormantels herum angeordnet ist. Hierdurch erfolgt die Kompensation der Schwingungen nah am Kompressor. Dadurch ergibt sich einerseits ein einfacher, kompakter Aufbau, andererseits werden die Schwingungen bereits am Entstehungsort unterdrückt und eine Ausbreitung verhindert. In der einfachsten Form kann die schwingfähige Masse als Manschette ausgebildet sein.It is advantageous if the compressor comprises an at least approximately hollow-cylindrical stator and the oscillatory mass is arranged at least around a part of the stator jacket. As a result, the compensation of the vibrations takes place close to the compressor. This results in a simple, compact design, on the one hand, on the other hand, the vibrations are already suppressed at the point of origin and prevents propagation. In the simplest form, the oscillatory mass can be designed as a sleeve.

In einer ersten vorteilhaften Ausführungsform umgibt die Manschette unter wenigstens partieller Zwischenlage eines Elastomers den Statormantel. Dabei wirkt das Elastomer als Federelement, welches die Schwingfähigkeit der Masse gewährleistet. Die erfindungsgemäße Verwendung von Elastomer ergibt einen einfach zu fertigenden Aufbau, welcher außerdem robuster als beispielsweise eine Metallfeder ist.In a first advantageous embodiment, the sleeve surrounds the stator jacket with at least partial interposition of an elastomer. The elastomer acts as a spring element, which ensures the vibration of the mass. The use of elastomer according to the invention results in a structure that is easy to manufacture, which is also more robust than, for example, a metal spring.

In einer weiteren vorteilhaften Ausführungsform ist die Manschette aus einem Elastomer gebildet, welchem gegebenenfalls nichtelastomere Masseteile beigefügt sind. Hier wirkt dann das Elastomer sowohl als Federelement als auch als Masse, wodurch der Aufbau noch weiter vereinfacht wird. Eine gute Schwingfähigkeit wird erreicht, wenn die Manschette Lamellen umfasst, welche sich wenigstens annähernd parallel zur Statorachse erstrecken. Wenn die Breite und/oder Tiefe der Lamellen über ihre Länge und damit das Massen-Steifigkeits-Verhältnis variiert kann eine breitbandige Tilgerwirkung erzielt werden.In a further advantageous embodiment, the sleeve is formed from an elastomer, to which optionally non-elastomeric parts by weight are added. Here then the elastomer acts both as a spring element and as a mass, whereby the structure is further simplified. Good vibration ability is achieved if the sleeve comprises lamellae which extend at least approximately parallel to the stator axis. If the width and / or depth of the slats vary over their length and thus the mass-stiffness ratio, a broadband Tilgerwirkung can be achieved.

In einer weiteren vorteilhaften Ausführungsform ist der Stator auf einer Grundplatte befestigt, welche über elastische Fußelemente an dem Haushaltgerät fixiert ist, und als Schwingungstilger ist die schwingfähige Masse an mindestens einem der Fußelemente angeordnet. Hierdurch entsteht eine konstruktiv einfache Lösung, bei welcher lediglich die Fußelemente angepasst werden müssen.In a further advantageous embodiment, the stator is mounted on a base plate which is fixed on the household appliance via elastic foot elements, and as a vibration damper the oscillatable mass is arranged on at least one of the foot elements. This results in a structurally simple solution in which only the foot elements must be adjusted.

Wenn an mehreren Fußelementen jeweils eine separate schwingfähige Masse angeordnet ist, können diese separaten schwingfähigen Masse unterschiedliche Eigenfrequenzen besitzen. Damit besteht die Möglichkeit, den Kompressor mit unterschiedlichen Frequenzen zu betreiben und diese Schwingungen auszugleichen.If a separate oscillatable mass is arranged on each of several foot elements, these separate oscillatable masses can have different natural frequencies. This makes it possible to operate the compressor with different frequencies and to compensate for these vibrations.

Es kann auch an mehreren Fußelementen gemeinsam eine schwingfähige Masse angeordnet sein. Dann ist es insbesondere vorteilhaft, wenn die Masse als wenigstens annähernd teilkreisförmige Platte ausgebildet ist, welche den Stator umgibt. Ein solcher Aufbau ist einerseits einfach hinsichtlich seiner Eigenfrequenz abstimmbar und andererseits leicht zu fertigen und zu montieren.It can also be arranged on several foot elements together an oscillatory mass. Then it is particularly advantageous if the mass is formed as at least approximately part-circular plate which surrounds the stator. On the one hand, such a construction is easily tunable with regard to its natural frequency and, on the other hand, it is easy to manufacture and assemble.

Es ist außerdem zweckmäßig, wenn die Fußelemente zwei Bereiche besitzen, wobei der erste Bereich sich zwischen der Grundplatte und dem Haushaltgerät erstreckt und der zweite Bereich über die Grundplatte hinausragt, und dass die schwingfähige(n) Masse(n) an dem zweiten Bereich befestigt ist(sind).It is also expedient for the foot elements to have two areas, the first area extending between the base plate and the household appliance, the second area protruding beyond the base plate, and the oscillatable mass (s) being fastened to the second area (are).

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt

Figur 1
in einer schematischen Darstellung das Prinzip einer Kompressions-wärmepumpe;
Figur 2
ebenfalls schematisch einen Kondensationstrockner mit einer Wärme-pumpenanordnung;
Figuren 3 bis 7
verschiedene Ausführungsformen von Verdichtern mit Schwingungstilgern.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows
FIG. 1
in a schematic representation of the principle of a compression heat pump;
FIG. 2
also schematically a condensation dryer with a heat pump assembly;
FIGS. 3 to 7
various embodiments of compressors with vibration absorbers.

Figur 1 lässt in schematischer Darstellung das Prinzip einer Kompressionswärmepumpe 1 erkennen. Die Kompressionswärmepumpe 1, kurz Wärmepumpe 1, verfügt über einen Verdampfer 2, einen Verdichter 3, einen Verflüssiger 4 sowie über ein Expansionsventil 5, das hier als Kapillarrohr angedeutet ist. Der Verdampfer 2, der Verdichter 3, der Verflüssiger 4 und das Expansionsventil 5 sind Bestandteile eines geschlossenen Kreislaufes 6, der von einem Kältemittel durchströmt wird und zwar ausgehend vom Verdampfer 2, zum Verdichter 3, zum Verflüssiger 4, zu der Drosselstelle 5 und schließlich zurück zum Verdampfer 2. FIG. 1 can be seen in a schematic representation of the principle of a compression heat pump 1. The compression heat pump 1, short heat pump 1, has an evaporator 2, a compressor 3, a condenser 4 and an expansion valve 5, which is here indicated as a capillary tube. The evaporator 2, the compressor 3, the condenser 4 and the expansion valve 5 are components of a closed circuit 6, which is flowed through by a refrigerant, starting from the evaporator 2, the compressor 3, the condenser 4, to the throttle point 5 and finally back to the evaporator 2.

Figur 2 zeigt eine Schemaskizze eines Trockners 10 mit einer solchen Wärmepumpenanordnung. In dem Kältemittelkreislauf 6 wird Kältemittel KM in einer Kältemittelleitung 11 über den Verdampfer 2, den Verdichter 3, den Verflüssiger 4 und das Expansionsventil (nicht dargestellt) geführt. Dabei sind der Verdampfer 2 und der Verflüssiger 4 der Wärmepumpe 1 derart im Prozessluftkreislauf 14 angeordnet, dass ein Wärmetauscher 12 den Verdampfer 2 enthält, an welchem die feuchtigkeitsbeladene Prozessluft PL abgekühlt und durch Kondensation entfeuchtet wird. Das dabei entstehende Kondenswasser wird in einem Kondenswasser-Sammelbehälter 13 aufgefangen. Nach dem Entfeuchten wird die abgekühlte Prozessluft PL am Verflüssiger 4 der Wärmepumpenanordnung 1 erneut erhitzt und in die Trockentrommel 15 eingeleitet. Im Beispiel ist ein geschlossener Prozessluftkreislauf 14 dargestellt, denkbar ist auch eine offene Prozessluftführung, beispielsweise bei einem Ablufttrockner oder einer Geschirrspülmaschine. FIG. 2 shows a schematic of a dryer 10 with such a heat pump assembly. In the refrigerant circuit 6, refrigerant KM is guided in a refrigerant line 11 via the evaporator 2, the compressor 3, the condenser 4, and the expansion valve (not shown). In this case, the evaporator 2 and the condenser 4 of the heat pump 1 are arranged in the process air circuit 14 such that a heat exchanger 12 contains the evaporator 2, at which the moisture-laden process air PL is cooled and dehumidified by condensation. The resulting condensation is collected in a condensate collection tank 13. After dehumidifying, the cooled process air PL is reheated at the condenser 4 of the heat pump assembly 1 and introduced into the drying drum 15. In the example, a closed process air circuit 14 is shown; an open process air duct is also conceivable, for example in the case of an exhaust air dryer or a dishwasher.

Die Figuren 3 bis 7 zeigen nun Verdichter 3 vom Rotationskompressortyp, insbesondere vom Rollkolbenkompressortyp, bei denen ein erfindungsgemäßer Energieentzug der Drehschwingungen durch Resonanz erfolgt. Der Kompressor umfasst einen wenigstens annähernd hohlzylindrischen Stator 20, in dem in bekannter Weise ein motorisch angetriebener Rollkolben (nicht dargestellt) rotiert. Der Stator 20 ist auf einer dreieckigen Grundplatte 21 befestigt, welche über elastische Fußelemente 22 an der Bodenwanne 23 des Trocknergehäuses 16 (siehe Figur 2) schwingfähig gelagert ist. Hierzu sind an die Bodenwanne 23 drei Bolzen 24 geschraubt, auf welche je eine Elastomerhülse 25 gesteckt ist. Die Elastomerhülsen 25 nehmen dann jeweils eine Bohrung (nicht dargestellt) in einer Ecke der Grundplatte 21 auf. Zur Sicherung kann auf den Bolzen 24 eine nicht dargestellte Mutter geschraubt werden. An den Stator 20 sind eine Zuleitung 27 und eine Ableitung 26 für das Kältemittel KM angeschlossen, von denen in den Zeichnungen lediglich ein Stück dargestellt ist. In die Zuleitung 27 ist ein Flüssigkeitsabscheider 28 integriert.The FIGS. 3 to 7 Now show compressor 3 of the rotary compressor type, in particular of the rotary piston compressor type, in which an inventive energy withdrawal of torsional vibrations takes place by resonance. The compressor comprises an at least approximately hollow cylindrical stator 20, in which, in a known manner, a motor-driven rolling piston (not shown) rotates. The stator 20 is mounted on a triangular base plate 21, which via elastic foot elements 22 on the bottom trough 23 of the dryer housing 16 (see FIG. 2 ) is mounted oscillatory. For this purpose, three bolts 24 are screwed to the bottom tray 23, on each of which an elastomeric sleeve 25 is inserted. The elastomer sleeves 25 then each take a bore (not shown) in a corner of the base plate 21. To secure a nut, not shown, can be screwed onto the bolt 24. To the stator 20, a supply line 27 and a discharge line 26 are connected for the refrigerant KM, of which only one piece is shown in the drawings. In the supply line 27, a liquid separator 28 is integrated.

Die Figuren 3 und 3a zeigen einen Kompressor 3 mit einer ersten Ausführungsform eines Schwingungstilgers. Hier wird als schwingfähige Masse eine Manschette 30 verwendet, die um den oberen Bereich des Stators 20 herum angeordnet ist. Die Manschette 30 ist als zweiteilige Blechbaugruppe ausgebildet. Jedes Manschettenteil 31 und 32 besitzt im Randbereich vier c-förmige Aussparungen 33, durch die zungenförmige Aufhängungen 34 gebildet werden. Mittel dieser Aufhängungen werden an der Innenseite der Manschettenteile je zwei Elastomerringe 35 befestigt, wie aus der Zusammenschau der Figuren 3 und 3a gut erkennbar ist. Jedes Manschettenteil besitzt an seinen ungekrümmten Rändern 36 abgekantete Bereiche 37, die auf der einen Seite eine durchgehende Anlagefläche 38 und auf der anderen Seite einen Teil eines Steckgelenks 39 bilden. Die Anlageflächen 38 sind mit einer nicht erkennbaren Bohrung versehen, durch die ein Schraubenbolzen 40 gesteckt werden kann. Auf diese Weise können die beiden Manschettenteile 31 und 32 unter Zwischenlage der Elastomerringe 35 um den Stator 20 herum befestigt werden. Schweiß- oder Nietverbindungen sind natürlich auch denkbar. Dabei bilden die Ringe 35 Federelemente, die die Schwingfähigkeit der Manschette 30 gewährleisten. Die Eigenfrequenz dieser schwingfähigen Masse kann durch die Masse der Manschette 30 (beeinflussbar durch deren Materialstärke oder Geometrie) und/oder über die Härte oder die Geometrie der Elastomerringe 35 eingestellt werden. In Figur 3 sind durch den Pfeil 41 die Schwingungen des Stators 20 angedeutet. Bei richtig eingestellter Eigenfrequenz der schwingfähigen Masse geht diese beim Betrieb des Kompressors 3 in Resonanz und schwingt gegenphasig zum Stator 20, was durch den Pfeil 42 angedeutet ist. Dadurch werden die Kompressoramplitude und somit auch die Schwingungen der Kältemittelleitungen 26 und 27 deutlich reduziert.The FIGS. 3 and 3a show a compressor 3 with a first embodiment of a vibration absorber. Here, a cuff 30, which is arranged around the upper area of the stator 20, is used as the oscillatable mass. The sleeve 30 is formed as a two-part sheet metal assembly. Each sleeve portion 31 and 32 has four c-shaped recesses 33 in the edge region, are formed by the tongue-shaped suspensions 34. Means of these suspensions are attached to the inside of the sleeve parts each two elastomer rings 35, as from the synopsis of FIGS. 3 and 3a is clearly recognizable. Each sleeve part has at its non-curved edges 36 bent portions 37, which form on one side a continuous contact surface 38 and on the other side a part of a male hinge 39. The contact surfaces 38 are provided with an unrecognizable bore through which a bolt 40 can be inserted. In this way, the two sleeve parts 31 and 32 under Liner of the elastomeric rings 35 are attached to the stator 20 around. Welding or riveting are of course also conceivable. The rings 35 form spring elements which ensure the ability of the sleeve 30 to vibrate. The natural frequency of this oscillatable mass can be adjusted by the mass of the sleeve 30 (influenced by its material thickness or geometry) and / or by the hardness or the geometry of the elastomer rings 35. In FIG. 3 are indicated by the arrow 41, the vibrations of the stator 20. When properly set natural frequency of the oscillatory mass, this goes into resonance during operation of the compressor 3 and oscillates in opposite phase to the stator 20, which is indicated by the arrow 42. As a result, the compressor amplitude and thus also the vibrations of the refrigerant lines 26 and 27 are significantly reduced.

In der Variante, die in den Figuren 4, 4a, 4b und 4c dargestellt ist, wird ebenfalls eine Manschette 50 als schwingfähige Masse eingesetzt. Hier besteht die Manschette 50 allerdings nur aus einem Elastomer. Sie kann über den Stator 20 gestülpt werden und haftet dort bei entsprechender Auslegung ihrer Weite durch Reib- und Kraftschluss. Auch Klebverbindungen sind denkbar. Dann kann anstelle einer geschlossenen Manschette ein rechteckiges Element verwendet werden. Durch Schlitze 51 in Richtung der Statorlängsachse werden Lamellen 52 erzeugt, die dann sowohl das Federelement als auch die schwingfähige Masse in einem einzigen Bauteil vereinen. Die Schwingfähigkeit der Lamellen 52 ist in Figur 4a durch ihre gestrichelte Darstellung angedeutet. Es kann sinnvoll sein, die Schlitze 51 zwischen den Lamellen 52 so dünn auszuführen, dass die Flanken benachbarter Lamellen 521 und 522 geringfügig aneinander reiben und so zusätzliche Schwingungsenergie vernichten. Außerdem kann es sinnvoll sein, die Materialstärke der Manschette am oberen und unteren Ende unterschiedlich auszuführen (siehe Figur 4b), um das Massen-Steifigkeits-Verhältnis zu variieren und eine breitbandige Tilgerwirkung zu erzielen oder zum gleichen Zweck die Lamellen 52 gegenläufig keilförmig auszuführen (siehe Figur 4c). In das Elastomer können auch nichtelastomere Masseteile wie Metallpartikel oder Metallstäbe integriert werden (nicht dargestellt).In the variant, which in the Figures 4, 4a, 4b and 4c is shown, a collar 50 is also used as a vibratory mass. Here, however, the cuff 50 consists only of an elastomer. It can be slipped over the stator 20 and adheres there with appropriate design of their width by friction and adhesion. Also glued joints are conceivable. Then, instead of a closed collar, a rectangular element can be used. Slots 52 are created through slots 51 in the direction of the stator longitudinal axis, which then combine both the spring element and the oscillatable mass in a single component. The vibration ability of the fins 52 is in FIG. 4a indicated by its dashed line. It may be useful to make the slots 51 between the fins 52 so thin that the flanks of adjacent fins 521 and 522 rub against each other slightly and thus destroy additional vibration energy. In addition, it may be useful to perform the material thickness of the cuff at the top and bottom differently (see FIG. 4b ) to vary the mass-stiffness ratio and to achieve a broadband Tilgerwirkung or for the same purpose, the fins 52 in opposite wedge shape perform (see Figure 4c ). In the elastomer also non-elastomeric mass parts such as metal particles or metal rods can be integrated (not shown).

Bei der Variante gemäß den Figuren 5 und 5a sind die Fußelemente 22 gemäß einer ersten Modifikation 60 ausgebildet. Sie besitzen eine Elastomerhülse 25, die um eine umlaufende Wulst 61 verlängert ist. So wird die Befestigung eines dreieckigen Blechs oder Blechpakets ermöglicht. Das Blech oder Blechpaket erstreckt sich dann parallel zur Grundplatte 21 zwischen dieser und der hier nicht gezeigten Bodenwanne 23. Es dient als schwingfähige Masse. Als Federelement wird hier das Fußelement 22 selbst eingesetzt. Dabei muss die Steifigkeit der Elastomerhülsen 25 und die Masse bzw. das Trägheitsmoment des Blechs oder Blechpakets so abgestimmt sein, dass beim Kompressorbetrieb eine Resonanz entsteht.In the variant according to the FIGS. 5 and 5a the foot elements 22 are formed according to a first modification 60. They have an elastomeric sleeve 25, which is extended by a circumferential bead 61. Thus, the attachment of a triangular sheet or laminated core is made possible. The sheet or laminated core then extends parallel to the base plate 21 between this and the bottom pan 23, not shown here. It serves as a vibratory mass. As a spring element, the foot element 22 itself is used here. The stiffness of the elastomer sleeves 25 and the mass or the moment of inertia of the sheet metal or laminated core must be tuned so that a resonance arises during compressor operation.

Die Figuren 6 und 7 zeigen Kompressoren 3, deren Fußelemente gemäß einer zweiten Modifikation 70 ausgebildet sind. Auch hier sind die Elastomerhülsen 25 axial verlängert, allerdings oberhalb der Grundplatte. So entstehen ein erster Bereich 71 zwischen Bodenwanne 23 und Grundplatte 21 und ein zweiter Bereich 72, der über die Grundplatte 21 hinausragt. An diesem zweiten Bereich 72 erfolgt dann die Aufnahme einer oder mehrerer Massen 73 bzw. 74, wobei der zweite Bereich 72 selbst als Federelement dient. Diese Massen 73 bzw. 74 können aufgesteckt, angeklebt, aufvulkanisiert sein oder die Elastomerhülsen 25 werden so massiv ausgeführt, dass sie selbst genug Masse bereitstellen, um als Schwingungstilger wirken zu können. Die Tilgerwirkung wird bei der Ausführungsform nach Figur 6 von drei separaten Massen 73 erzielt, die im Gegensatz zu den vorbeschriebenen Ausführungsformen vorwiegend translatorische Schwingungen (Pfeile 75) ausführen. Bei dieser Variante kann es auch sinnvoll sein, verschieden schwere Massen 73 einzusetzen, um Schwingungen bei unterschiedlichen Frequenzen zu dämpfen.The FIGS. 6 and 7 show compressors 3, the foot elements are formed according to a second modification 70. Again, the elastomer sleeves 25 are axially extended, but above the base plate. This results in a first region 71 between the bottom trough 23 and base plate 21 and a second region 72, which projects beyond the base plate 21. The reception of one or more masses 73 or 74 takes place at this second region 72, the second region 72 itself serving as a spring element. These masses 73 and 74 may be plugged, glued, vulcanized or the elastomer sleeves 25 are made so massive that they provide even enough mass to act as a vibration absorber can. The Tilgerwirkung is in the embodiment after FIG. 6 achieved by three separate masses 73, which in contrast to the above-described embodiments mainly perform translational oscillations (arrows 75). In this variant, it may also be useful to use different masses 73 in order to damp vibrations at different frequencies.

In einer alternativen Ausführungsform (siege Figur 7) kann die Masse auch als ringförmig oder C-förmige Platte 74 ausgeführt sein und an mehreren oder allen Elastomerhülsen 25 angebunden sein.In an alternative embodiment (Siege FIG. 7 ), the mass may also be designed as an annular or C-shaped plate 74 and be connected to several or all elastomer sleeves 25.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Wärmepumpeheat pump
22
VerdampferEvaporator
33
Verdichtercompressor
44
Verflüssigercondenser
55
Expansionsventilexpansion valve
66
KältemittelkreislaufRefrigerant circulation
1010
Trocknerdryer
1111
KältemittelleitungRefrigerant line
1212
Wärmetauscherheat exchangers
1313
Kondenswasser-SammelbehälterCondensate collection tank
1414
Prozessluft-KreislaufProcess air circuit
1515
Trockentrommeldry drum
1616
Trocknergehäusedryer housing
2020
Statorstator
2121
Grundplattebaseplate
2222
Fußelementefoot elements
2323
Bodenwannefloor pan
2424
Bolzenbolt
2525
Elastomerhülseelastomeric sleeve
2626
Ableitungderivation
2727
Zuleitungsupply
2828
Flüssigkeitsabscheiderliquid separator
3030
Manschettecuff
3131
Manschettenteilcuff portion
3232
Manschettenteilcuff portion
3333
c-förmige Aussparungc-shaped recess
3434
Aufhängungsuspension
3535
Elastomerringelastomer ring
3636
ungekrümmter Randunbent edge
3737
abgekanteter Bereichfolded area
3838
Anlageflächecontact surface
3939
Steckgelenkplug joint
4040
Schraubenbolzenbolt
4141
Pfeilarrow
4242
Pfeilarrow
5050
Manschettecuff
5151
Schlitzeslots
5252
Lamellenlamella
521521
benachbarte Lamellenadjacent lamellae
522522
benachbarte Lamellenadjacent lamellae
6060
erste Fußelementmodifikationfirst foot element modification
6161
Wulstbead
6262
Blech/BlechpaketSheet / plate package
7070
zweite Fußelementmodifikationsecond foot element modification
7171
erster Bereich des Fußelementsfirst area of the foot element
7272
zweiter Bereich des Fußelementssecond area of the foot element
7373
Masse in Figur 6 Mass in FIG. 6
7474
c-förmige Masse in Figur 7 c-shaped mass in FIG. 7
7575
Pfeilarrow

Claims (13)

Haushaltgerät mit einer Trocknungseinrichtung, wie Wäschetrockner (10), Waschtrockner oder Geschirrspülmaschine, wobei die Trocknung durch oder mit Unterstützung einer Wärmepumpenanordnung (1) erfolgt, welche einen Rotationskompressor, insbesondere einen Rollkolbenkompressor beinhaltet, dadurch gekennzeichnet,
dass dem Kompressor (3) als Schwingungstilger mindestens eine schwingfähige Masse zugeordnet ist, deren Eigenfrequenz auf die vom Kompressor (3) erzeugten Drehschwingungen abgestimmt ist.Domestic appliance having a drying device, such as a tumble dryer (10), a washer-dryer or a dishwasher, the drying being carried out by or with the assistance of a heat pump arrangement (1) which includes a rotary compressor, in particular a rotary piston compressor, characterized in that
that the compressor (3) is associated as a vibration damper at least one oscillatory mass whose natural frequency is tuned to the torsional vibrations generated by the compressor (3). Haushaltgerät nach Anspruch 1,
dadurch gekennzeichnet,
dass der Kompressor einen wenigstens annähernd hohlzylindrischen Stator (20) umfasst und dass die schwingfähige Masse wenigstens um einen Teil des Statormantels herum angeordnet ist.Household appliance according to claim 1,
characterized,
in that the compressor comprises an at least approximately hollow-cylindrical stator (20) and in that the oscillatory mass is arranged at least around a part of the stator jacket. Haushaltgerät nach Anspruch 2,
dadurch gekennzeichnet,
dass die schwingfähige Masse als Manschette (30, 50)ausgebildet ist.Household appliance according to claim 2,
characterized,
is that the oscillatable mass as a sleeve (30, 50) is formed. Haushaltgerät nach Anspruch 3,
dadurch gekennzeichnet,
dass die Manschette (30) unter wenigstens partieller Zwischenlage eines Elastomers (35) den Statormantel umgibt.Household appliance according to claim 3,
characterized,
that the sleeve (30) under at least partial intermediate layer of elastomer (35) surrounds the stator. Haushaltgerät nach Anspruch 3,
dadurch gekennzeichnet,
dass die Manschette (50) aus einem Elastomer gebildet ist, welchem gegebenenfalls nichtelastomere Masseteile beigefügt sind.Household appliance according to claim 3,
characterized,
in that the sleeve (50) is formed from an elastomer to which nonelastomeric parts by weight are optionally added. Haushaltgerät nach Anspruch 5,
dadurch gekennzeichnet,
dass die Manschette Lamellen (52, 521, 522) umfasst, welche sich in wenigstens annähernd parallel zur Statorachse erstrecken.Household appliance according to claim 5,
characterized,
in that the sleeve comprises lamellae (52, 521, 522) which extend in at least approximately parallel to the stator axis. Haushaltgerät nach Anspruch 6,
dadurch gekennzeichnet,
dass die Breite und/oder Tiefe der Lamellen (52, 521, 522) über ihre Länge variiert.Household appliance according to claim 6,
characterized,
that the width and / or depth of the sipes (52, 521, 522) varies along its length. Haushaltgerät nach mindestens einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der Stator (20) auf einer Grundplatte (21) befestigt ist, welche über elastische Fußelemente (22) an dem Haushaltgerät fixiert ist, und dass als Schwingungstilger die schwingfähige Masse (62, 73, 74) an mindestens einem der Fußelemente (22) angeordnet ist.Domestic appliance according to at least one of the preceding claims,
characterized,
in that the stator (20) is fastened on a base plate (21) which is fixed to the domestic appliance via elastic foot elements (22), and in that as a vibration damper the oscillatable mass (62, 73, 74) is attached to at least one of the foot elements (22). is arranged. Haushaltgerät nach Anspruch 8,
dadurch gekennzeichnet,
dass an mehreren Fußelementen (22) jeweils eine separate schwingfähige Masse (73) angeordnet ist.Household appliance according to claim 8,
characterized,
in that in each case a separate oscillatable mass (73) is arranged on a plurality of base elements (22). Haushaltgerät nach Anspruch 9,
dadurch gekennzeichnet,
dass die separaten schwingfähigen Masse unterschiedliche Eigenfrequenzen besitzen.Household appliance according to claim 9,
characterized,
that the separate oscillatory mass have different natural frequencies. Haushaltgerät nach Anspruch 8,
dadurch gekennzeichnet,
dass an mehreren Fußelementen (22) gemeinsam eine schwingfähige Masse (62, 74) angeordnet ist.Household appliance according to claim 8,
characterized,
that at a plurality of foot members (22) together are an oscillatory mass (62, 74) is arranged. Haushaltgerät nach Anspruch 11,
dadurch gekennzeichnet,
dass die Masse (74) als wenigstens annähernd teilkreisförmige Platte ausgebildet ist, welche den Stator umgibt.Household appliance according to claim 11,
characterized,
that the mass (74) is formed as at least approximately part-circular plate which surrounds the stator. Haushaltgerät nach mindestens einem der Ansprüche 8 bis 12,
dadurch gekennzeichnet,
dass die Fußelemente (22) zwei Bereiche (71, 72) besitzen, wobei der erste Bereich (71) sich zwischen der Grundplatte (21) und dem Haushaltgerät erstreckt und der zweite Bereich über die Grundplatte (21) hinausragt, und dass die schwingfähige(n) Masse(n) (73, 74) an dem zweiten Bereich befestigt ist(sind).Domestic appliance according to at least one of claims 8 to 12,
characterized,
in that the foot elements (22) have two regions (71, 72), the first region (71) extending between the base plate (21) and the domestic appliance, and the second region projecting beyond the base plate (21), and in that the oscillatable ( n) mass (s) (73, 74) is attached to the second region (are).
EP12401024.0A 2012-02-17 2012-02-17 Household appliance with a drying device Active EP2628838B1 (en)

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EP12401024.0A EP2628838B1 (en) 2012-02-17 2012-02-17 Household appliance with a drying device
ES12401024.0T ES2515041T3 (en) 2012-02-17 2012-02-17 Domestic appliance with a dryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (2)

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JP2007136054A (en) * 2005-11-22 2007-06-07 Toshiba Corp Washing/drying machine
WO2007073052A1 (en) * 2005-12-21 2007-06-28 Lg Electronics Inc. Housing for modulizing heat pump system in a clothes dryer and clothes dryer having the same
JP2008088919A (en) * 2006-10-03 2008-04-17 Toshiba Corp Heat pump mechanism and drum type washing dryer having the same
JP2010057545A (en) * 2008-09-01 2010-03-18 Toshiba Corp Washing-drying machine
JP2011167223A (en) * 2010-02-16 2011-09-01 Panasonic Corp Washing machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013221982A1 (en) * 2013-10-29 2015-04-30 BSH Bosch und Siemens Hausgeräte GmbH Household appliance with a heat pump
DE102013221982B4 (en) 2013-10-29 2023-07-06 BSH Hausgeräte GmbH Household appliance with a heat pump
DE102014206650A1 (en) 2014-04-07 2015-10-08 BSH Hausgeräte GmbH Dryer with a low-vibration heat pump and method of operation
DE102014106604A1 (en) * 2014-05-12 2015-11-12 Miele & Cie. Kg Household appliance such as a tumble dryer with a heat pump unit
DE102014106604B4 (en) 2014-05-12 2017-03-30 Miele & Cie. Kg Household appliance such as a tumble dryer with a heat pump unit
EP3135807A1 (en) 2015-08-27 2017-03-01 BSH Hausgeräte GmbH Household device with a vibration-damped pipeline and method for producing the same
DE102015216441A1 (en) 2015-08-27 2017-03-02 BSH Hausgeräte GmbH Household appliance with a vibration-damped pipeline and process for its production
WO2018063133A3 (en) * 2016-09-29 2018-05-17 Arçeli̇k Anoni̇m Şi̇rketi̇ Dishwasher with heat pump
CN112629071A (en) * 2020-12-11 2021-04-09 安徽美博智能科技有限公司 Low-temperature total heat recovery type air-cooled heat pump unit

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ES2515041T3 (en) 2014-10-29
PL2628838T3 (en) 2015-01-30

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