EP3497277B1 - Inner unit of a laundry treatment machine and laundry treatment machine having such an inner unit - Google Patents

Inner unit of a laundry treatment machine and laundry treatment machine having such an inner unit Download PDF

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Publication number
EP3497277B1
EP3497277B1 EP17754073.9A EP17754073A EP3497277B1 EP 3497277 B1 EP3497277 B1 EP 3497277B1 EP 17754073 A EP17754073 A EP 17754073A EP 3497277 B1 EP3497277 B1 EP 3497277B1
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EP
European Patent Office
Prior art keywords
motor
inner unit
electronics system
motor electronics
unit according
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EP17754073.9A
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German (de)
French (fr)
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EP3497277A1 (en
Inventor
Martin Weinmann
Hartmut Wauer
Bernd Last
Sebastian Tinius
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.)
Diehl AKO Stiftung and Co KG
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Diehl AKO Stiftung and Co KG
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Publication of EP3497277A1 publication Critical patent/EP3497277A1/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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups

Definitions

  • the invention relates to an indoor unit of a laundry treatment machine, in particular an oscillatingly suspended indoor unit of a laundry treatment machine, according to the preamble of claim 1, and a laundry treatment machine with such an indoor unit.
  • the indoor unit 2 of a washing or centrifuging machine usually comprises a tub 3 with a laundry drum 4 rotatably mounted therein and a drive unit in the form of an electric motor 8, which drives the laundry drum 4 frequently via a reduction gear or a transmission.
  • the indoor unit is suspended in a machine or vending machine housing 1 so that it can vibrate and represents a damped, vibrating overall system that is subject to resonance phenomena in certain areas of the speed of the laundry drum, which is reduced compared to the motor speed, and which can be excited by unbalance in the laundry load.
  • a momentary imbalance in the load strong oscillating movements of the indoor unit can occur. It is important to recognize any oscillating movements that arise and to avoid them by specifying the appropriate target speeds.
  • FIG DE 10 2005 037 144 B4 One approach in which the motor electronics 10 are attached directly to the electric motor 8 is shown in FIG DE 10 2005 037 144 B4 described.
  • this solution has not caught on on the market, since the engine electronics should be separated from the engine for reasons of logistics and warranty.
  • Technical disadvantages of this conventional solution are the physical proximity of the engine electronics to the hot electric motor and the need for a housing to protect the engine electronics from dripping water.
  • the DE 10 2014 200 775 A1 an indoor unit of a washing machine with a tub, a rotatably mounted laundry drum, one outside of the tub arranged electric drive motor and an electronics module, wherein the electronics module, wherein the electronics module is attached separately to the tub on a base body and is in heat-conductive contact with the interior of the tub via one or more heat-conducting components in order to direct waste heat from operation of the electronics module To be able to transfer heating of an aqueous liquid located in the interior of the tub.
  • the present invention is based on the problem of providing an improved indoor unit of a laundry treatment machine in which the motor electronics are well protected with a simple design.
  • an indoor unit of a laundry treatment machine with a tub, a rotatably mounted laundry drum in the tub, an electric motor for driving the laundry drum and motor electronics for controlling the electric motor, the tub has a recess and the motor electronics are received in this recess and thus is mounted directly on the tub; wherein the formation is also designed to shield the engine electronics from moisture and to protect the engine electronics from mechanical influences.
  • the indoor unit is preferably an indoor unit that is suspended so that it can vibrate.
  • the motor electronics are spaced apart from the electric motor for driving the laundry drum.
  • the electric motor which becomes hot during operation, therefore does not pose a problem for the motor electronics, so that less effort is required for cooling and / or thermal insulation of the motor electronics and, as a result, the motor electronics can be designed in a simpler and more cost-effective manner.
  • the inventive mounting of the motor electronics directly on the tub by means of the molding provided on the tub means that additional protection of the motor electronics and additional fasteners for the motor electronics, for example in the form of a housing, paint or the like, can be dispensed with, or such measures can at least be simpler .
  • the configuration according to the invention is more flexible with regard to new printed circuit boards (equipping).
  • the separation of engine electronics and electric motor also has advantages in terms of logistics and warranty.
  • Another advantage is a reduced complexity of a cable harness and the vibration loops.
  • the formation is designed to shield the engine electronics from moisture, in particular to shield it from water droplets or splash water.
  • the shape of the tub shields the motor electronics from water droplets and water splashes.
  • the formation is designed to protect the motor electronics from mechanical effects, in particular from striking a machine housing of the laundry treatment machine or a part connected to it.
  • the shape of the suds container adequately protects the motor electronics from a stop on the machine housing or parts connected to it.
  • the formation and / or the motor electronics have at least one opening for exchanging a fluid located in the formation, in particular water vapor or water, with an environment. Through this at least one opening, for example, condensation water occurring between the motor electronics and the tub can escape.
  • the engine electronics have a printed circuit board on which the components of the engine electronics are at least partially suspended.
  • larger components such as chokes and heat sinks are mounted hanging down on the circuit board of the motor electronics so that condensation water flows away due to the force of gravity and cannot flow onto the circuit board.
  • the motor electronics are preferably connected to a DC voltage supply for supplying electrical energy.
  • the motor electronics are preferably connected to a main control of the laundry treatment machine via an energy supply line.
  • the motor electronics can be supplied directly with DC voltage or have a rectifier to which an AC voltage is fed.
  • the engine electronics have at least one vibration sensor or one rotation rate sensor.
  • One or more vibration sensors are mounted on the motor electronics of the indoor unit. With the aid of the at least one vibration sensor, vibrations of the indoor unit, for example caused by an imbalance in the load of the laundry drum, can preferably be detected in order to control the electric motor accordingly.
  • the part of the engine electronics is, which is preferably rigidly connected to the tub, a speed profile for the drive of the laundry drum can be optimized.
  • the at least one vibration sensor is preferably designed based on a measurement principle using a capacitive effect, an inductive effect or a piezoelectric effect.
  • the at least one vibration sensor is preferably designed and / or arranged in such a way that it can be used to detect a rotary vibratory movement of the indoor unit or the tub of the indoor unit about a first axis of rotation.
  • This first axis of rotation is preferably oriented at an angle, in particular perpendicular or substantially perpendicular to a drive axis of rotation defined by the bearing shaft of the electric motor and / or the laundry drum.
  • At least two vibration sensors are preferably provided. Then an imaginary straight line connecting the at least two vibration sensors is preferably oriented parallel to the drive axis of rotation.
  • At least one distance sensor is provided for measuring a distance between the internal unit and a machine housing or a part firmly connected to the machine housing.
  • a loading of the laundry drum i. E. a weight of the laundry in the laundry drum, in particular a dry load at the start of a washing program of the laundry treatment machine or an amount of water supplied can be determined.
  • the tub and the laundry drum in the machine housing sink against the spring force of the suspension of the indoor unit, so that this sinking path can be recorded as a measure of the load.
  • the distance sensor has a transmitter arranged on the motor electronics and a receiver arranged on the motor electronics, the transmitter and receiver preferably being based on an optical measuring principle and the transmitter and the receiver of the distance sensor having a reflective surface on the Machine housing or a part firmly connected to the machine housing.
  • the distance sensor has a transmitter or receiver arranged on the motor electronics and a receiver or transmitter arranged on the machine housing or a part permanently connected to the machine housing (e.g. a main control of the laundry treatment machine).
  • the connection between transmitter and receiver is preferably made by means of a sensor line for high-resolution and fast data transmission.
  • At least one filter device for damping low-frequency and / or high-frequency electromagnetic interference is provided.
  • the at least one filter device preferably has a harmonic choke for damping the mains harmonics (e.g. up to about 2 kHz), which is preferably arranged on a main control of the laundry treatment machine, and / or a filter choke for filtering the high-frequency interference emission (e.g. above 100 kHz) of the converter stage of the motor electronics on.
  • the filter choke for filtering high-frequency interference is preferably mounted directly on the motor electronics.
  • the electric motor has a stator plate which is electrically connected to the motor electronics, preferably to a voltage intermediate circuit of the motor electronics.
  • the capacitive connection of the stator plate of the electric motor to a reference potential of the motor electronics, preferably to a pole of the voltage intermediate circuit of the motor electronics, can reduce the coupling of electromagnetic interference to the machine housing, a wiring harness located therein or other electrical components.
  • the stator plate of the electric motor can serve as a shield for the motor phases of the electric motor that are clocked by the motor electronics.
  • the two aforementioned measures can improve the electromagnetic compatibility of the indoor unit, in particular with regard to the emission of interference from the electric motor and the motor electronics.
  • an electrical insulator is arranged between a motor belt pulley of the electric motor and a rotor axis of the electric motor. I.e. the motor belt pulley of the electric motor is electrically isolated from the rotor axis of the electric motor.
  • the engine electronics have a heat sink, preferably a heat sink with cooling fins.
  • the cooling fins are preferably designed as domes, particularly preferably as a plurality of domes.
  • the invention also relates to a laundry treatment machine with a machine housing, a main controller and an above-described indoor unit of the invention.
  • the laundry treatment machine is, for example, a washing machine or a tumble dryer.
  • Fig. 2 shows schematically a washing machine in a front view against the rear of a machine housing 1 of the washing machine, the rear facing a loading opening (not shown).
  • An indoor unit 2 is suspended in the machine housing 1 such that it can vibrate.
  • the indoor unit 2 comprises a tub 3, a washing or laundry drum 4, a drum belt pulley 5, a transmission belt 6, a motor belt pulley 7 and an electric motor 8.
  • the indoor unit comprises all the components that come with the rotating washing or laundry drum 4 form a common oscillation system.
  • the vibration system is vibration-isolated and / or vibration-damped by a suspension with respect to a machine housing 1.
  • the drum-shaped tub 3 is aligned in its longitudinal extension parallel or with a slight incline to the bottom of the machine housing 1.
  • the tub 3 is thus arranged horizontally in the machine housing 1.
  • a first side wall of the tub 3 faces the loading opening (not shown).
  • a right-angled coordinate system 9 with three axes X, Y, Z is shown.
  • the axis marked with X is aligned essentially parallel to the longitudinal extension of the tub 3.
  • the washing or laundry drum 4 is arranged concentrically within the tub 3.
  • the laundry drum 4 is rotatably mounted, in particular in the rear wall of the tub 3. In a second side wall of the tub 3 facing away from the loading opening.
  • the washing or laundry drum 4 is non-rotatably connected to the drum belt pulley 5.
  • the drum belt pulley 5 is arranged concentrically to the washing or laundry drum 4. However, the drum belt pulley 5 is normally made smaller in diameter than the washing or laundry drum 4.
  • the drum belt pulley 5 is arranged on the side of the second side wall outside of the tub 3.
  • the drum belt pulley 5 is coupled to a motor belt pulley 7 via a transmission belt 6.
  • the motor belt pulley 7 is aligned parallel to the drum belt pulley 5.
  • the motor belt pulley 7 is arranged offset in the direction of the bottom of the machine housing 1.
  • the motor belt pulley 7 is non-rotatably connected to a rotor shaft of the electric motor 8, so that the motor belt pulley 7 can be driven by the electric motor 8.
  • About a belt drive consisting of the motor belt pulley 7, the transmission belt 6 and the drum belt pulley 5 is the Washing or laundry drum 4 can be set in rotary motion within the tub 3.
  • the transmission belt 6 is not an insulator in the sense of a basic insulation
  • the bearing of the laundry drum 4 can be grounded (not shown).
  • the motor belt pulley 7 is provided with basic insulation, e.g. in the form of a two-component belt pulley on the axis of the electric motor 8 with an internal electrical insulator 7a.
  • the washing or laundry drum 4 can be moved by a direct drive.
  • the direct drive is located in the place of the drum belt pulley 5.
  • the suspension of the indoor unit 2 is implemented in the ceiling area of the machine housing 1 by springs 11.
  • the springs 11 each engage with their one end in the ceiling-side side areas of the machine housing 1. At their other end, the springs 11 are fastened at various positions on the indoor unit 2, for example on the top of the tub 3.
  • friction dampers 12 in the bottom area of the machine housing 1 stabilize the internal unit 2.
  • the friction dampers 12 are each supported with one end in the side areas of the machine housing 1. The respective other end is attached to the side of the indoor unit 2 facing the bottom of the machine housing 1, here on the underside of the tub 3, in different positions.
  • the electric motor 8 is controlled by engine electronics 10.
  • This motor electronics 10 is not attached to the electric motor 8, as in the case of FIG Fig. 1 shown conventional embodiment, but mounted on the tub 3.
  • a special formation 3a is provided, which is formed on the tub 3 or is firmly connected to it.
  • the motor electronics 10 are accommodated in this formation 3 a, so that the motor electronics 10 are rigidly connected to the tub 3.
  • a main control 20 is also provided in the machine housing 1, which supplies the motor electronics 10 with direct voltage or alternating voltage via a power supply line 21 and is connected to the motor electronics 10 via a communication line 22 for data exchange.
  • the motor electronics 10 are connected to the electric motor 8 via a connection 13 for controlling the motor phases of the electric motor 8.
  • a connection 14 is provided between the engine electronics 10 and a stator sheet 8a of the electric motor 8.
  • the components of the engine electronics 10 are in Fig. 3 shown in more detail, their structure and arrangement are shown in a highly schematic manner.
  • the motor electronics 10 have, for example, a flat or 3-D printed circuit board 24 that is rigidly connected to the tub 3.
  • the circuit board 24 is received in particular in the recess 3 a on the tub 3.
  • One or more openings 23 are formed in the circuit board 24 so that a fluid (e.g. condensation water, water vapor) in the space between the circuit board 24 and the tub 3 can run off into the environment. Additionally or alternatively, one or more openings can also be formed in the molding.
  • a fluid e.g. condensation water, water vapor
  • the engine electronics 10 contain a large number of electronic components as well as a heat sink 28.
  • the larger components - when the engine electronics 10 are installed - are mounted on the circuit board 24 in a suspended manner. In this way, the condensation water, which may condense on the electronic components, does not flow onto the printed circuit board 24, but can instead drip off into the environment under the force of gravity.
  • the heat sink 28 is used in particular to cool power components such as a converter output stage 31 of the motor electronics 10.
  • the heat sink 28 is preferably provided with a plurality of cooling fins 29 in the form of domes.
  • the heat sink 28 experiences additional forced ventilation through vibrations of the indoor unit 2 caused by imbalance.
  • a heat sink design with low flow resistance also in the X and Y directions is therefore advantageous in order to achieve the best possible cooling for all possible imbalance-related deflections of the motor electronics 10.
  • a cooling body 28 configured in this way can be a cast cooling body with a plurality of cooling fins 29 in the form of domes. Alternatively, the heat sink 28 protrudes beyond the end wall of the tub 3 in order to ensure better air circulation in the Z direction.
  • the motor electronics 10 have a control device 35 (e.g. microcontroller) which is connected to the main control 20 of the laundry treatment machine via a communication line 22.
  • a control device 35 e.g. microcontroller
  • a rectifier 32 which is supplied with AC voltage by the main controller 20 via a power supply line 21, a voltage intermediate circuit 30 and a three-phase converter output stage 31 for controlling the three motor phases of the electric motor 8 are arranged on the circuit board 24 of the motor electronics 10.
  • the engine electronics 10 can be switched on and off via the main control 20 with a switch.
  • the main control 20 is connected to the motor electronics 10 via the energy supply line 21.
  • the illustrated embodiment supplies the power supply line 21 from the main controller 20 to the motor electronics 10 with mains voltage.
  • the mains voltage is rectified in the rectifier 32 of the motor electronics 10.
  • the rectified AC voltage on the motor electronics 10 supplies the voltage intermediate circuit 30.
  • other actuators such as circulation pumps or drain pumps, can also be supplied from the voltage intermediate circuit 30.
  • the motor electronics 10 can be supplied with a direct voltage. If the motor electronics 10 are supplied with power by means of the power supply line 21 via a DC voltage, the same voltage intermediate circuit 30 can be used in addition to the converter output stage 31 to control the electric motor 8 for further converter output stages on the main control 20 to control further actuators, such as a circulation pump or a drain pump.
  • the converter output stage 31 is connected to the electric motor via the connection 13.
  • the electrical potential of the stator lamination 8a of the electric motor 8 is fed to the motor electronics 10 via the connection 14.
  • the connection 14 on the motor electronics 10 is capacitively connected to a reference potential of the motor electronics 10.
  • the connection 14 is preferably connected to one pole of the voltage intermediate circuit 30 of the converter output stage 31 for controlling the electric motor 8, so that the stator plate 8a of the motor 8 acts as a shield for the motor phases clocked via the connection 13.
  • the motor electronics 10 usually generate disruptive low-frequency harmonic currents on the power supply line 21, which must be attenuated. Furthermore, high-frequency electromagnetic interference occurs through switching processes in the power stage of the motor electronics 10, which are used to control the electric motor 8.
  • the components for filtering the electromagnetic interference emission are in the embodiment of FIG Fig. 3 arranged as follows.
  • a (heavy) harmonic choke 33 for reducing the harmonics to the mains frequency up to approx. 2 kHz is arranged on the main control 20.
  • the filter components for damping high-frequency interference are mounted close to the source of interference, preferably directly on the motor electronics 10.
  • Such a filter device is, for example, a current-compensated double choke 25 for filtering the high-frequency electromagnetic interference emission (> 100 kHz) of the converter output stage 31 of the motor electronics 10.
  • the engine electronics 10 also have one or more vibration sensors 26 for detecting vibrations of the indoor unit 2, in particular its tub 3, and the control device 35 for recording the measured values of the at least one vibration sensor 26 and for controlling the electric motor 8.
  • the vibration sensors 26 are designed, for example, in such a way that they rotate or linear movements around the Y-axis and / or the Z-axis (coordinate system 9) can measure.
  • the angular accelerations or linear accelerations associated with these rotations or linear movements can be measured with the vibration sensors 26.
  • a pitching movement of the indoor unit 2 (about the Y-axis) and / or a yawing movement of the indoor unit 2 (about the Z-axis) can be measured.
  • the vibration sensors 26 can be designed in such a way that vibrations around the X-axis or in the X-axis can also be measured.
  • At least two vibration sensors 26 are preferably mounted on the motor electronics 10 and / or directly on the tub 3.
  • the vibration sensors 26 lie on a (fictitious) straight line parallel to the drive axis of rotation (X).
  • the at least two vibration sensors 26 have the greatest possible distance from one another.
  • the position of the center of mass of the laundry within the washing or laundry drum 4 above a feed speed at which the laundry is completely in contact with the laundry drum 4 can be precisely determined.
  • the movement of the laundry drum 4 within the washing machine is thus clearly determined and predictable.
  • a vibration sensor and a rotation rate sensor can also be used.
  • the two sensors are preferably to be mounted to one another in such a way that the detection axes of both sensors are congruent.
  • the load or the degree of filling or the weight of the laundry drum 4 loaded by the loaded laundry can be measured by measuring a sinking path of the friction damper 12 or by comparing a position of the motor electronics 10 to that of the machine housing 1 Reference point.
  • the measurement can take place on the basis of optical, laser-optical, fiber-optical, acoustic, inductive or magnetostrictive measuring principles. Further preferred measuring principles are based on the principle of the differential transformer, the differential throttle or by determining the sinking path on the basis of an eddy current sensor.
  • a transmitter 27a and a receiver 27b can be mounted on the engine electronics 10.
  • the transmitter 27a and receiver 27b of the distance sensor interact, for example, with a reflective surface 34 on the bottom of the machine housing 1.
  • the control architecture according to the invention with the motor electronics 10 attached to the tub 3 offers further options for a degree of filling measurement via the sinking path of the indoor unit 2.
  • the distance sensor can also be controlled by a transmitter 27a 'on the main control 20 and a receiver 27b' on the motor electronics 10, which can be coupled to one another via a sensor line 27c '.
  • optical, acoustic or electromagnetic carrier signals can be transmitted via the sensor line 27c ′ in order to detect the relative position between the main controller 20 and the engine electronics 10. If a digital communication signal between transmitter 27a 'and receiver 27b' is sufficient, sensor line 27c 'can be omitted in a preferred embodiment and communication between transmitter 27a' and receiver 27b 'can take place indirectly via communication line 22.
  • the main control 20 Since the main control 20 is permanently connected to the machine housing 1, the absolute lowering of the tub 3 when it is loaded with laundry can be measured and the weight of the load can be determined via the spring constant of the springs 11.
  • the main control 20 is preferably mounted near the motor electronics 10 on the machine housing 1 of the laundry treatment machine.
  • the signals between the transmitter 27a 'and the receiver 27b' can thus be received as undisturbed as possible, with the best possible resolution.
  • the positions of transmitter 27a 'and receiver 27b' can also be interchanged.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Description

Die Erfindung betrifft ein Innenaggregat einer Wäschebehandlungsmaschine, insbesondere ein schwingfähig aufgehängtes Innenaggregat einer Wäschebehandlungsmaschine, gemäß dem Oberbegriff des Patentanspruchs 1 sowie eine Wäschebehandlungsmaschine mit einem solchen Innenaggregat.The invention relates to an indoor unit of a laundry treatment machine, in particular an oscillatingly suspended indoor unit of a laundry treatment machine, according to the preamble of claim 1, and a laundry treatment machine with such an indoor unit.

Wie in Fig. 1 veranschaulicht, umfasst das Innenaggregat 2 einer Wasch- oder Schleudermaschine gewöhnlich einen Laugenbehälter 3 mit darin drehbar gelagerter Wäschetrommel 4 und einer Antriebseinheit in Form eines Elektromotors 8, der die Wäschetrommel 4 häufig über ein Reduktionsgetriebe oder eine Transmission antreibt. Das Innenaggregat ist schwingfähig in einem Maschinen- oder Automatengehäuse 1 aufgehängt und stellt ein gedämpft schwingungsfähiges Gesamtsystem dar, das in bestimmen Bereichen der - gegenüber Motordrehzahl untersetzten - Drehzahl der Wäschetrommel Resonanzerscheinungen unterliegt, welche durch Unwucht in der Wäschebeladung angeregt werden können. Infolge momentaner Unwucht in der Beladung können starke Schwingbewegungen des Innenaggregats entstehen. Entstehende Schwingbewegungen gilt es zu erkennen und durch Vorgabe entsprechender Solldrehzahlen zu umgehen.As in Fig. 1 As illustrated, the indoor unit 2 of a washing or centrifuging machine usually comprises a tub 3 with a laundry drum 4 rotatably mounted therein and a drive unit in the form of an electric motor 8, which drives the laundry drum 4 frequently via a reduction gear or a transmission. The indoor unit is suspended in a machine or vending machine housing 1 so that it can vibrate and represents a damped, vibrating overall system that is subject to resonance phenomena in certain areas of the speed of the laundry drum, which is reduced compared to the motor speed, and which can be excited by unbalance in the laundry load. As a result of a momentary imbalance in the load, strong oscillating movements of the indoor unit can occur. It is important to recognize any oscillating movements that arise and to avoid them by specifying the appropriate target speeds.

Ein Lösungsansatz, bei dem die Motorelektronik 10 direkt am Elektromotor 8 befestigt ist, ist in der DE 10 2005 037 144 B4 beschrieben. Diese Lösung hat sich aber am Markt nicht durchgesetzt, da aus Gründen der Logistik und Gewährleistung die Motorelektronik vom Motor getrennt sein sollte. Technische Nachteile dieser herkömmlichen Lösung sind die räumliche Nähe der Motorelektronik zum heißen Elektromotor sowie die Notwendigkeit eines Gehäuses zum Schutz der Motorelektronik vor Tropfwasser.One approach in which the motor electronics 10 are attached directly to the electric motor 8 is shown in FIG DE 10 2005 037 144 B4 described. However, this solution has not caught on on the market, since the engine electronics should be separated from the engine for reasons of logistics and warranty. Technical disadvantages of this conventional solution are the physical proximity of the engine electronics to the hot electric motor and the need for a housing to protect the engine electronics from dripping water.

Ferner offenbart die DE 10 2014 200 775 A1 ein Innenaggregat einer Waschmaschine mit einem Laugenbehälter, einer drehbar gelagerten Wäschetrommel, einem außerhalb des Laugenbehälters angeordneten elektrischen Antriebsmotor und einem Elektronikmodul, wobei das Elektronikmodul, wobei das Elektronikmodul separat zum Laugenbehälter auf einem Grundkörper angebracht ist und über ein oder mehrere wärmeleitende Bauteile mit dem Innenraum des Laugenbehälters wärmeleitend in Kontakt steht, um Abwärme aus einem Betrieb des Elektronikmoduls zur direkten Erwärmung einer im Innenraum des Laugenbehälters befindlichen wässrigen Flüssigkeit übertragen zu können.Furthermore, the DE 10 2014 200 775 A1 an indoor unit of a washing machine with a tub, a rotatably mounted laundry drum, one outside of the tub arranged electric drive motor and an electronics module, wherein the electronics module, wherein the electronics module is attached separately to the tub on a base body and is in heat-conductive contact with the interior of the tub via one or more heat-conducting components in order to direct waste heat from operation of the electronics module To be able to transfer heating of an aqueous liquid located in the interior of the tub.

Der vorliegenden Erfindung liegt die Problemstellung zugrunde, ein verbessertes Innenaggregat einer Wäschebehandlungsmaschine bereitzustellen, bei dem die Motorelektronik bei einfacher Bauweise gut geschützt ist.The present invention is based on the problem of providing an improved indoor unit of a laundry treatment machine in which the motor electronics are well protected with a simple design.

Diese Aufgabe wird erfindungsgemäß gelöst durch ein Innenaggregat einer Wäschebehandlungsmaschine mit einem Laugenbehälter, einer drehbar gelagerten Wäschetrommel im Laugenbehälter, einem Elektromotor zum Antreiben der Wäschetrommel und einer Motorelektronik zur Ansteuerung des Elektromotors, wobei der Laugenbehälter eine Ausformung aufweist und die Motorelektronik in dieser Ausformung aufgenommen und damit direkt an dem Laugenbehälter montiert ist; wobei die Ausformung außerdem zur Abschirmung der Motorelektronik vor Feuchtigkeit und zum Schutz der Motorelektronik vor mechanischen Einwirkungen ausgestaltet ist. Bei dem Innenaggregat handelt es sich vorzugsweise um ein schwingfähig aufgehängtes Innenaggregat.This object is achieved according to the invention by an indoor unit of a laundry treatment machine with a tub, a rotatably mounted laundry drum in the tub, an electric motor for driving the laundry drum and motor electronics for controlling the electric motor, the tub has a recess and the motor electronics are received in this recess and thus is mounted directly on the tub; wherein the formation is also designed to shield the engine electronics from moisture and to protect the engine electronics from mechanical influences. The indoor unit is preferably an indoor unit that is suspended so that it can vibrate.

Durch die erfindungsgemäß vorgesehene Montage der Motorelektronik direkt am Laugenbehälter ist die Motorelektronik vom Elektromotor zum Antreiben der Wäschetrommel beabstandet. Der im Betrieb heiß werdende Elektromotor stellt somit kein Problem für die Motorelektronik dar, sodass weniger Aufwand für die Kühlung und/oder die thermische Isolierung der Motorelektronik erforderlich ist und die Motorelektronik im Ergebnis einfacher und kostengünstiger ausgestaltet werden kann.By mounting the motor electronics directly on the tub, as provided according to the invention, the motor electronics are spaced apart from the electric motor for driving the laundry drum. The electric motor, which becomes hot during operation, therefore does not pose a problem for the motor electronics, so that less effort is required for cooling and / or thermal insulation of the motor electronics and, as a result, the motor electronics can be designed in a simpler and more cost-effective manner.

Durch die erfindungsgemäß vorgesehene Montage der Motorelektronik direkt am Laugenbehälter mittels der am Laugenbehälter vorgesehenen Ausformung kann auf einen zusätzlichen Schutz der Motorelektronik und auf zusätzliche Befestigungsmittel für die Motorelektronik zum Beispiel in Form eines Gehäuses, einer Lackierung oder dergleichen verzichtet werden oder können solche Maßnahmen zumindest einfacher ausfallen.The inventive mounting of the motor electronics directly on the tub by means of the molding provided on the tub means that additional protection of the motor electronics and additional fasteners for the motor electronics, for example in the form of a housing, paint or the like, can be dispensed with, or such measures can at least be simpler .

Außerdem ist die erfindungsgemäße Konfiguration im Hinblick auf neue Leiterplatten (bestückungen) flexibler. Auch hat die Trennung von Motorelektronik und Elektromotor Vorteile im Hinblick auf die Logistik und die Gewährleistung. Ein weiterer Vorteil besteht hinsichtlich einer reduzierten Komplexität eines Kabelbaums und der Schwingungsschlaufen.In addition, the configuration according to the invention is more flexible with regard to new printed circuit boards (equipping). The separation of engine electronics and electric motor also has advantages in terms of logistics and warranty. Another advantage is a reduced complexity of a cable harness and the vibration loops.

Erfindungsgemäß ist die Ausformung zur Abschirmung der Motorelektronik vor Feuchtigkeit ausgestaltet, insbesondere zur Abschirmung vor Wassertropfen oder Spritzwasser. Der Laugenbehälter schirmt durch seine Ausformung die Motorelektronik bezüglich Wassertropfen und Wasserspritzer ab. Außerdem ist die Ausformung zum Schutz der Motorelektronik vor mechanischen Einwirkungen, insbesondere vor einem Anschlagen an ein Maschinengehäuse der Wäschebehandlungsmaschine oder ein damit verbundenes Teil, ausgestaltet. Der Laugenbehälter schützt durch seine Ausformung die Motorelektronik hinreichend vor einem Anschlag am Maschinengehäuse oder damit verbunden Teile.According to the invention, the formation is designed to shield the engine electronics from moisture, in particular to shield it from water droplets or splash water. The shape of the tub shields the motor electronics from water droplets and water splashes. In addition, the formation is designed to protect the motor electronics from mechanical effects, in particular from striking a machine housing of the laundry treatment machine or a part connected to it. The shape of the suds container adequately protects the motor electronics from a stop on the machine housing or parts connected to it.

In einer vorteilhaften Ausgestaltung weisen die Ausformung und/oder die Motorelektronik wenigstens eine Öffnung zum Austausch eines in der Ausformung befindlichen Fluids, insbesondere Wasserdampf oder Wasser, mit einer Umgebung auf. Durch diese wenigstens eine Öffnung kann zum Beispiel zwischen der Motorelektronik und dem Laugenbehälter auftretendes Kondenswasser austreten.In an advantageous embodiment, the formation and / or the motor electronics have at least one opening for exchanging a fluid located in the formation, in particular water vapor or water, with an environment. Through this at least one opening, for example, condensation water occurring between the motor electronics and the tub can escape.

In einer vorteilhaften Ausgestaltung weist die Motorelektronik eine Leiterplatte auf, auf der die Komponenten der Motorelektronik zumindest teilweise hängend angeordnet sind. Insbesondere größere Komponenten wie Drosseln und Kühlkörper sind auf der Leiterplatte der Motorelektronik nach unten hängend montiert, damit Kondenswasser aufgrund der Gravitationskraft abfließt und nicht auf die Leiterplatte fließen kann.In an advantageous embodiment, the engine electronics have a printed circuit board on which the components of the engine electronics are at least partially suspended. In particular, larger components such as chokes and heat sinks are mounted hanging down on the circuit board of the motor electronics so that condensation water flows away due to the force of gravity and cannot flow onto the circuit board.

Vorzugsweise ist die Motorelektronik zur elektrischen Energieversorgung mit einer Gleichspannungsversorgung verbunden. Zu diesem Zweck ist die Motorelektronik bevorzugt über eine Energieversorgungsleitung mit einer Hauptsteuerung der Wäschebehandlungsmaschine verbunden. Dabei kann die Motorelektronik direkt mit Gleichspannung versorgt werden oder einen Gleichrichter aufweisen, dem eine Wechselspannung zugeführt wird.The motor electronics are preferably connected to a DC voltage supply for supplying electrical energy. For this purpose, the motor electronics are preferably connected to a main control of the laundry treatment machine via an energy supply line. The motor electronics can be supplied directly with DC voltage or have a rectifier to which an AC voltage is fed.

In einer vorteilhaften Ausgestaltung der Erfindung weist die Motorelektronik wenigstens einen Schwingungssensor oder einen Drehratensensor auf. An der Motorelektronik des Innenaggregats sind ein oder mehrere Schwingungssensoren montiert. Mit Hilfe des wenigstens einen Schwingungssensors können vorzugsweise Schwingungen des Innenaggregats, zum Beispiel verursacht durch eine Unwucht der Beladung der Wäschetrommel erfasst werden, um den Elektromotor entsprechend anzusteuern. Insbesondere kann mit Hilfe des wenigstens einen Schwingungssensors, der Teil der Motorelektronik ist, die bevorzugt starr mit dem Laugenbehälter verbunden ist, ein Drehzahlprofil für den Antrieb der Wäschetrommel optimiert werden.In an advantageous embodiment of the invention, the engine electronics have at least one vibration sensor or one rotation rate sensor. One or more vibration sensors are mounted on the motor electronics of the indoor unit. With the aid of the at least one vibration sensor, vibrations of the indoor unit, for example caused by an imbalance in the load of the laundry drum, can preferably be detected in order to control the electric motor accordingly. In particular, with the aid of the at least one vibration sensor, the part of the engine electronics is, which is preferably rigidly connected to the tub, a speed profile for the drive of the laundry drum can be optimized.

Vorzugsweise ist der wenigstens eine Schwingungssensor auf einem einen kapazitiven Effekt, einen induktiven Effekt oder einen piezoelektrischen Effekt nutzenden Messprinzip beruhend ausgebildet.The at least one vibration sensor is preferably designed based on a measurement principle using a capacitive effect, an inductive effect or a piezoelectric effect.

Vorzugsweise ist der wenigstens eine Schwingungssensor derart ausgebildet und/oder angeordnet, dass mit ihm eine rotatorische Schwingbewegung des Innenaggregats bzw. des Laugenbehälters des Innenaggregats um eine erste Drehachse detektierbar ist. Diese erste Drehachse ist bevorzugt schräg, insbesondere senkrecht oder im Wesentlichen senkrecht zu einer durch die Lagerwelle des Elektromotors und/oder der Wäschetrommel definierten Antriebsdrehachse ausgerichtet.The at least one vibration sensor is preferably designed and / or arranged in such a way that it can be used to detect a rotary vibratory movement of the indoor unit or the tub of the indoor unit about a first axis of rotation. This first axis of rotation is preferably oriented at an angle, in particular perpendicular or substantially perpendicular to a drive axis of rotation defined by the bearing shaft of the electric motor and / or the laundry drum.

Vorzugsweise sind wenigstens zwei Schwingungssensoren vorgesehen. Dann ist eine die wenigstens zwei Schwingungssensoren verbindende, gedachte Gerade bevorzugt parallel zur Antriebsdrehachse orientiert.At least two vibration sensors are preferably provided. Then an imaginary straight line connecting the at least two vibration sensors is preferably oriented parallel to the drive axis of rotation.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung ist wenigstens ein Abstandssensor zur Messung eines Abstands zwischen dem Innenaggregat und einem Maschinengehäuse oder einem fest mit dem Maschinengehäuse verbundenen Teil vorgesehen. Mit Hilfe dieses Abstandssensors kann vorzugsweise eine Beladung der Wäschetrommel, d.h. ein Gewicht der Wäsche in der Wäschetrommel, insbesondere eine Trockenbeladung zu Beginn eines Waschprogramms der Wäschebehandlungsmaschine oder eine zugeführte Wassermenge bestimmt werden. Im Fall eines schwingfähig aufgehängten Innenaggregats sinken der Laugenbehälter und die Wäschetrommel im Maschinengehäuse gegen die Federkraft der Aufhängung des Innenaggregats ab, sodass dieser Absinkweg als Maß für die Beladung erfasst werden kann.In a further advantageous embodiment of the invention, at least one distance sensor is provided for measuring a distance between the internal unit and a machine housing or a part firmly connected to the machine housing. With the help of this distance sensor a loading of the laundry drum, i. E. a weight of the laundry in the laundry drum, in particular a dry load at the start of a washing program of the laundry treatment machine or an amount of water supplied can be determined. In the case of an indoor unit that is suspended so that it can vibrate, the tub and the laundry drum in the machine housing sink against the spring force of the suspension of the indoor unit, so that this sinking path can be recorded as a measure of the load.

In einer Ausführungsvariante weist der Abstandssensor einen auf der Motorelektronik angeordneten Sender und einen auf der Motorelektronik angeordneten Empfänger auf, wobei Sender und Empfänger bevorzugt auf einem optischen Messprinzip beruhen und der Sender und der Empfänger des Abstandssensors mit einer Reflexionsfläche an dem Maschinengehäuse oder einem fest mit dem Maschinengehäuse verbunden Teil zusammenwirken.In one embodiment, the distance sensor has a transmitter arranged on the motor electronics and a receiver arranged on the motor electronics, the transmitter and receiver preferably being based on an optical measuring principle and the transmitter and the receiver of the distance sensor having a reflective surface on the Machine housing or a part firmly connected to the machine housing.

In einer alternativen oder zusätzlichen Ausführungsvariante weist der Abstandssensor einen auf der Motorelektronik angeordneten Sender oder Empfänger und einen an dem Maschinengehäuse oder einem fest mit dem Maschinengehäuse verbundenen Teil (z.B. einer Hauptsteuerung der Wäschebehandlungsmaschine) angeordneten Empfänger oder Sender auf. Die Verbindung zwischen Sender und Empfänger erfolgt vorzugsweise mittels einer Sensorleitung zur hochauflösenden und schnellen Datenübertragung.In an alternative or additional embodiment variant, the distance sensor has a transmitter or receiver arranged on the motor electronics and a receiver or transmitter arranged on the machine housing or a part permanently connected to the machine housing (e.g. a main control of the laundry treatment machine). The connection between transmitter and receiver is preferably made by means of a sensor line for high-resolution and fast data transmission.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung ist wenigstens eine Filtereinrichtung zur Dämpfung niederfrequenter und/oder hochfrequenter elektromagnetischer Störungen vorgesehen. Die wenigstens eine Filtereinrichtung weist bevorzugt eine Oberwellendrossel zur Dämpfung der Netzoberwellen (z.B. bis etwa 2 kHz), die bevorzugt auf einer Hauptsteuerung der Wäschebehandlungsmaschine angeordnet ist, und/oder eine Filterdrossel zur Filterung der hochfrequenten Störaussendung (z.B. über 100 kHz) der Umrichterstufe der Motorelektronik auf. Die Filterdrossel zur Filterung der hochfrequenten Störungen ist bevorzugt direkt auf der Motorelektronik montiert.In a further advantageous embodiment of the invention, at least one filter device for damping low-frequency and / or high-frequency electromagnetic interference is provided. The at least one filter device preferably has a harmonic choke for damping the mains harmonics (e.g. up to about 2 kHz), which is preferably arranged on a main control of the laundry treatment machine, and / or a filter choke for filtering the high-frequency interference emission (e.g. above 100 kHz) of the converter stage of the motor electronics on. The filter choke for filtering high-frequency interference is preferably mounted directly on the motor electronics.

In einer vorteilhaften Ausgestaltung der Erfindung weist der Elektromotor ein Statorblech auf, das elektrisch mit der Motorelektronik, bevorzugt mit einem Spannungszwischenkreis der Motorelektronik verbunden ist. Durch die kapazitive Verbindung des Statorblechs des Elektromotors mit einem Bezugspotenzial der Motorelektronik, bevorzugt mit einem Pol des Spannungszwischenkreises der Motorelektronik, kann die Einkopplung elektromagnetischer Störungen auf das Maschinengehäuse, einen darin liegenden Kabelbaum oder andere elektrische Komponenten reduziert werden. D.h. das Statorblech des Elektromotors kann als Abschirmung für die von der Motorelektronik getakteten Motorphasen des Elektromotors dienen.In an advantageous embodiment of the invention, the electric motor has a stator plate which is electrically connected to the motor electronics, preferably to a voltage intermediate circuit of the motor electronics. The capacitive connection of the stator plate of the electric motor to a reference potential of the motor electronics, preferably to a pole of the voltage intermediate circuit of the motor electronics, can reduce the coupling of electromagnetic interference to the machine housing, a wiring harness located therein or other electrical components. I.e. the stator plate of the electric motor can serve as a shield for the motor phases of the electric motor that are clocked by the motor electronics.

Durch die beiden vorgenannten Maßnahmen lässt sich die elektromagnetische Verträglichkeit des Innenaggregats insbesondere bezüglich Störaussendung des Elektromotors und der Motorelektronik verbessern.The two aforementioned measures can improve the electromagnetic compatibility of the indoor unit, in particular with regard to the emission of interference from the electric motor and the motor electronics.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung ist ein elektrischer Isolator zwischen einem Motorriemenrad des Elektromotors und einer Rotorachse des Elektromotors angeordnet. D.h. das Motorriemenrad des Elektromotors ist gegen die Rotorachse des Elektromotors elektrisch isoliert.In a further advantageous embodiment of the invention, an electrical insulator is arranged between a motor belt pulley of the electric motor and a rotor axis of the electric motor. I.e. the motor belt pulley of the electric motor is electrically isolated from the rotor axis of the electric motor.

In einer weiteren vorteilhaften Ausgestaltung der Erfindung weist die Motorelektronik einen Kühlkörper auf, vorzugsweise einen Kühlkörper mit Kühlfinnen auf. Die Kühlfinnen sind vorzugsweise als Dome, besonders bevorzugt als eine Vielzahl von Domen ausgeführt.In a further advantageous embodiment of the invention, the engine electronics have a heat sink, preferably a heat sink with cooling fins. The cooling fins are preferably designed as domes, particularly preferably as a plurality of domes.

Gegenstand der Erfindung ist auch eine Wäschebehandlungsmaschine mit einem Maschinengehäuse, einer Hauptsteuerung und einem oben beschriebenen Innenaggregat der Erfindung. Bei der Wäschebehandlungsmaschine handelt es sich zum Beispiel um eine Waschmaschine oder einen Wäschetrockner.The invention also relates to a laundry treatment machine with a machine housing, a main controller and an above-described indoor unit of the invention. The laundry treatment machine is, for example, a washing machine or a tumble dryer.

Obige sowie weitere Merkmale und Vorteile der Erfindung werden aus der nachfolgenden Beschreibung eines bevorzugten, nicht-einschränkenden Ausführungsbeispiels anhand der beiliegenden Zeichnung besser verständlich. Darin zeigen, größtenteils schematisch:

Fig. 1
den Aufbau einer Waschmaschine mit einem aus dem Stand der Technik bekannten Innenaggregat;
Fig. 2
den Aufbau einer Waschmaschine mit einem schwingfähig aufgehängten Innenaggregat gemäß einem Ausführungsbeispiel der Erfindung; und
Fig. 3
stark vereinfacht die Komponenten der Motorelektronik des Innenaggregats und der Wechselwirkung mit anderen Komponenten gemäß einem Ausführungsbeispiel der Erfindung.
The above and other features and advantages of the invention can be better understood from the following description of a preferred, non-limiting exemplary embodiment with reference to the accompanying drawings. In it show, mostly schematically:
Fig. 1
the structure of a washing machine with an indoor unit known from the prior art;
Fig. 2
the structure of a washing machine with an oscillatingly suspended indoor unit according to an embodiment of the invention; and
Fig. 3
greatly simplifies the components of the motor electronics of the indoor unit and the interaction with other components according to an embodiment of the invention.

Fig. 2 zeigt schematisch eine Waschmaschine in einer Stirnansicht gegen die Rückseite eines Maschinengehäuses 1 der Waschmaschine, wobei die Rückseite einer nicht dargestellten Beladungsöffnung gegenüberliegt. In dem Maschinengehäuse 1 ist ein Innenaggregat 2 schwingfähig aufgehängt. Fig. 2 shows schematically a washing machine in a front view against the rear of a machine housing 1 of the washing machine, the rear facing a loading opening (not shown). An indoor unit 2 is suspended in the machine housing 1 such that it can vibrate.

Das Innenaggregat 2 umfasst einen Laugenbehälter 3, eine Wasch- oder Wäschetrommel 4, ein Trommelriemenrad 5, einen Transmissionsriemen 6, ein Motorriemenrad 7 und einen Elektromotor 8. Mit anderen Worten umfasst das Innenaggregat alle Bestandteile, die mit der rotierenden Wasch- oder Wäschetrommel 4 ein gemeinsames Schwingsystem bilden. Das Schwingsystem ist durch eine Aufhängung gegenüber einem Maschinengehäuse 1 schwingungsisoliert und/oder schwingungsgedämpft.The indoor unit 2 comprises a tub 3, a washing or laundry drum 4, a drum belt pulley 5, a transmission belt 6, a motor belt pulley 7 and an electric motor 8. In other words, the indoor unit comprises all the components that come with the rotating washing or laundry drum 4 form a common oscillation system. The vibration system is vibration-isolated and / or vibration-damped by a suspension with respect to a machine housing 1.

Der trommelförmige Laugenbehälter 3 ist in seiner Längserstreckung parallel oder mit leichter Neigung zum Boden des Maschinengehäuses 1 ausgerichtet. Der Laugenbehälter 3 ist also in dem Maschinengehäuse 1 liegend angeordnet. Eine erste Seitenwand des Laugenbehälters 3 ist der Beladungsöffnung (nicht dargestellt) zugewandt. In Fig. 2 ist ein rechtwinkliges Koordinatensystem 9 mit drei Achsen X, Y, Z eingezeichnet. Die mit X gekennzeichnete Achse ist im Wesentlichen parallel zur Längserstreckung des Laugenbehälters 3 ausgerichtet.The drum-shaped tub 3 is aligned in its longitudinal extension parallel or with a slight incline to the bottom of the machine housing 1. The tub 3 is thus arranged horizontally in the machine housing 1. A first side wall of the tub 3 faces the loading opening (not shown). In Fig. 2 a right-angled coordinate system 9 with three axes X, Y, Z is shown. The axis marked with X is aligned essentially parallel to the longitudinal extension of the tub 3.

Die Wasch- oder Wäschetrommel 4 ist konzentrisch innerhalb des Laugenbehälters 3 angeordnet. Die Wäschetrommel 4 ist drehbar gelagert, insbesondere in der Rückwand des Laugenbehälters 3. In einer der Beladungsöffnung abgewandten, zweiten Seitenwand des Laugenbehälters 3.The washing or laundry drum 4 is arranged concentrically within the tub 3. The laundry drum 4 is rotatably mounted, in particular in the rear wall of the tub 3. In a second side wall of the tub 3 facing away from the loading opening.

Die Wasch- oder Wäschetrommel 4 ist drehfest mit dem Trommelriemenrad 5 verbunden. Das Trommelriemenrad 5 ist konzentrisch zu der Wasch- oder Wäschetrommel 4 angeordnet. Das Trommelriemenrad 5 ist jedoch im Durchmesser normalerweise kleiner ausgebildet als die Wasch- oder Wäschetrommel 4.The washing or laundry drum 4 is non-rotatably connected to the drum belt pulley 5. The drum belt pulley 5 is arranged concentrically to the washing or laundry drum 4. However, the drum belt pulley 5 is normally made smaller in diameter than the washing or laundry drum 4.

Das Trommelriemenrad 5 ist auf der Seite der zweiten Seitenwand außerhalb des Laugenbehälters 3 angeordnet. Über einen Transmissionsriemen 6 ist das Trommelriemenrad 5 mit einem Motorriemenrad 7 gekoppelt. Das Motorriemenrad 7 ist parallel zu dem Trommelriemenrad 5 ausgerichtet. In Richtung des Bodens des Maschinengehäuses 1 ist das Motorriemenrad 7 jedoch versetzt angeordnet. Das Motorriemenrad 7 ist mit einer Rotorwelle des Elektromotors 8 drehfest verbunden, sodass durch den Elektromotor 8 das Motorriemenrad 7 antreibbar ist. Über ein Riemengetriebe bestehend aus dem Motorriemenrad 7, dem Transmissionsriemen 6 und dem Trommelriemenrad 5 ist die Wasch- oder Wäschetrommel 4 innerhalb des Laugenbehälters 3 in Drehbewegung versetzbar.The drum belt pulley 5 is arranged on the side of the second side wall outside of the tub 3. The drum belt pulley 5 is coupled to a motor belt pulley 7 via a transmission belt 6. The motor belt pulley 7 is aligned parallel to the drum belt pulley 5. However, the motor belt pulley 7 is arranged offset in the direction of the bottom of the machine housing 1. The motor belt pulley 7 is non-rotatably connected to a rotor shaft of the electric motor 8, so that the motor belt pulley 7 can be driven by the electric motor 8. About a belt drive consisting of the motor belt pulley 7, the transmission belt 6 and the drum belt pulley 5 is the Washing or laundry drum 4 can be set in rotary motion within the tub 3.

Falls der Transmissionsriemen 6 kein Isolator im Sinne einer Basisisolierung ist, kann das Lager der Wäschetrommel 4 geerdet sein (nicht dargestellt). In einer bevorzugten Alternative ist das Motorriemenrad 7 mit einer Basisisolierung versehen, z.B. in Form eines Zwei-Komponenten-Riemenrades auf der Achse des Elektromotors 8 mit innen liegendem elektrischem Isolator 7a.If the transmission belt 6 is not an insulator in the sense of a basic insulation, the bearing of the laundry drum 4 can be grounded (not shown). In a preferred alternative, the motor belt pulley 7 is provided with basic insulation, e.g. in the form of a two-component belt pulley on the axis of the electric motor 8 with an internal electrical insulator 7a.

Bei einer alternativen Ausführungsform ist die Wasch- oder Wäschetrommel 4 durch einen Direktantrieb bewegbar. Der Direktantrieb befindet sich an der Stelle des Trommelriemenrads 5.In an alternative embodiment, the washing or laundry drum 4 can be moved by a direct drive. The direct drive is located in the place of the drum belt pulley 5.

Die Aufhängung des Innenaggregats 2 ist im Deckenbereich des Maschinengehäuses 1 durch Federn 11 realisiert. Die Federn 11 greifen jeweils mit ihrem einen Ende in die deckenseitigen Seitenbereiche des Maschinengehäuses 1 ein. Mit ihrem anderen Ende sind die Federn 11 an verschiedenen Positionen an dem Innenaggregat 2 befestigt, beispielsweise an der Oberseite des Laugenbehälters 3.The suspension of the indoor unit 2 is implemented in the ceiling area of the machine housing 1 by springs 11. The springs 11 each engage with their one end in the ceiling-side side areas of the machine housing 1. At their other end, the springs 11 are fastened at various positions on the indoor unit 2, for example on the top of the tub 3.

Ferner stabilisieren Reibungsdämpfer 12 im Bodenbereich des Maschinengehäuses 1 das Innenaggregat 2. Die Reibungsdämpfer 12 sind jeweils mit einem Ende in den Seitenbereichen des Maschinengehäuses 1 abgestützt. Das jeweils andere Ende ist an der dem Boden des Maschinengehäuses 1 zugewandten Seite des Innenaggregats 2, hier an der Unterseite des Laugenbehälters 3, an verschiedenen Positionen befestigt.Furthermore, friction dampers 12 in the bottom area of the machine housing 1 stabilize the internal unit 2. The friction dampers 12 are each supported with one end in the side areas of the machine housing 1. The respective other end is attached to the side of the indoor unit 2 facing the bottom of the machine housing 1, here on the underside of the tub 3, in different positions.

Der Elektromotor 8 wird von einer Motorelektronik 10 angesteuert. Diese Motorelektronik 10 ist nicht an dem Elektromotor 8 angebracht, wie bei der in Fig. 1 dargestellten herkömmlichen Ausführungsform, sondern an dem Laugenbehälter 3 montiert.The electric motor 8 is controlled by engine electronics 10. This motor electronics 10 is not attached to the electric motor 8, as in the case of FIG Fig. 1 shown conventional embodiment, but mounted on the tub 3.

Zu diesem Zweck ist eine spezielle Ausformung 3a vorgesehen, die an dem Laugenbehälter 3 ausgebildet ist oder mit diesem fest verbunden ist. Die Motorelektronik 10 ist in dieser Ausformung 3a aufgenommen, sodass die Motorelektronik 10 starr mit dem Laugenbehälter 3 verbunden ist.For this purpose, a special formation 3a is provided, which is formed on the tub 3 or is firmly connected to it. The motor electronics 10 are accommodated in this formation 3 a, so that the motor electronics 10 are rigidly connected to the tub 3.

Wie in Fig. 2 veranschaulicht, ist in dem Maschinengehäuse 1 ferner eine Hauptsteuerung 20 vorgesehen, welche die Motorelektronik 10 über eine Energieversorgungsleitung 21 mit Gleichspannung oder Wechselspannung versorgt und mit der Motorelektronik 10 über eine Kommunikationsleitung 22 zum Datenaustausch verbunden ist.As in Fig. 2 As illustrated, a main control 20 is also provided in the machine housing 1, which supplies the motor electronics 10 with direct voltage or alternating voltage via a power supply line 21 and is connected to the motor electronics 10 via a communication line 22 for data exchange.

Wie in Fig. 2 ferner veranschaulicht, ist die Motorelektronik 10 mit dem Elektromotor 8 über eine Verbindung 13 zum Ansteuern der Motorphasen des Elektromotors 8 verbunden. Außerdem ist eine Verbindung 14 zwischen der Motorelektronik 10 und einem Statorblech 8a des Elektromotors 8 vorgesehen.As in Fig. 2 further illustrated, the motor electronics 10 are connected to the electric motor 8 via a connection 13 for controlling the motor phases of the electric motor 8. In addition, a connection 14 is provided between the engine electronics 10 and a stator sheet 8a of the electric motor 8.

Die Komponenten der Motorelektronik 10 sind in Fig. 3 in mehr Einzelheiten gezeigt, wobei deren Aufbau und Anordnung stark schematisiert dargestellt sind.The components of the engine electronics 10 are in Fig. 3 shown in more detail, their structure and arrangement are shown in a highly schematic manner.

Die Motorelektronik 10 weist beispielsweise eine ebene oder eine 3-D-Leiterplatte 24 auf, die mit dem Laugenbehälter 3 starr verbunden ist. Die Leiterplatte 24 ist insbesondere in der Ausformung 3a am Laugenbehälter 3 aufgenommen.The motor electronics 10 have, for example, a flat or 3-D printed circuit board 24 that is rigidly connected to the tub 3. The circuit board 24 is received in particular in the recess 3 a on the tub 3.

In der Leiterplatte 24 sind ein oder mehrere Öffnungen 23 ausgebildet, sodass ein Fluid (z.B. Kondenswasser, Wasserdampf) im Zwischenraum zwischen der Leiterplatte 24 und dem Laugenbehälter 3 in die Umgebung ablaufen kann. Zusätzlich oder alternativ können auch ein oder mehrere Öffnungen in der Ausformung ausgebildet sein.One or more openings 23 are formed in the circuit board 24 so that a fluid (e.g. condensation water, water vapor) in the space between the circuit board 24 and the tub 3 can run off into the environment. Additionally or alternatively, one or more openings can also be formed in the molding.

Die Motorelektronik 10 enthält eine Vielzahl von Elektronikkomponenten sowie einen Kühlkörper 28. Insbesondere die größeren Komponenten sind - im eingebauten Zustand der Motorelektronik 10 - hängend an der Leiterplatte 24 montiert. Auf diese Weise fließt das Kondenswasser, das gegebenenfalls an den Elektronikkomponenten kondensiert, nicht auf die Leiterplatte 24, sondern kann durch die Schwerkraft in die Umgebung abtropfen.The engine electronics 10 contain a large number of electronic components as well as a heat sink 28. In particular, the larger components - when the engine electronics 10 are installed - are mounted on the circuit board 24 in a suspended manner. In this way, the condensation water, which may condense on the electronic components, does not flow onto the printed circuit board 24, but can instead drip off into the environment under the force of gravity.

Der Kühlkörper 28 dient insbesondere der Kühlung von Leistungskomponenten wie zum Beispiel einer Umrichterausgangsstufe 31 der Motorelektronik 10. Der Kühlkörper 28 ist bevorzugt mit einer Vielzahl von Kühlfinnen 29 in Form von Domen versehen.The heat sink 28 is used in particular to cool power components such as a converter output stage 31 of the motor electronics 10. The heat sink 28 is preferably provided with a plurality of cooling fins 29 in the form of domes.

Der Kühlkörper 28 erfährt eine zusätzliche Zwangsbelüftung durch unwuchtbedingte Schwingungen des Innenaggregats 2. Ein Kühlkörperdesign mit geringem Strömungswiderstand auch in X- und Y-Richtung ist daher vorteilhaft, um bei allen möglichen unwuchtbedingten Auslenkungsrichtungen der Motorelektronik 10 die bestmöglichste Kühlung zu erzielen. Ein so gestalteter Kühlköper 28 kann ein Gusskühlkörper mit einer Vielzahl von als Dome ausgebildeten Kühlfinnen 29 sein. Alternativ ragt der Kühlkörper 28 über die Stirnwand des Laugenbehälters 3 hinaus, um eine bessere Luftzirkulation in Z-Richtung zu gewährleisten.The heat sink 28 experiences additional forced ventilation through vibrations of the indoor unit 2 caused by imbalance. A heat sink design with low flow resistance also in the X and Y directions is therefore advantageous in order to achieve the best possible cooling for all possible imbalance-related deflections of the motor electronics 10. A cooling body 28 configured in this way can be a cast cooling body with a plurality of cooling fins 29 in the form of domes. Alternatively, the heat sink 28 protrudes beyond the end wall of the tub 3 in order to ensure better air circulation in the Z direction.

Die Motorelektronik 10 weist eine Steuereinrichtung 35 (z.B. Mikrocontroller) auf, der über eine Kommunikationsleitung 22 mit der Hauptsteuerung 20 der Wäschebehandlungsmaschine verbunden ist.The motor electronics 10 have a control device 35 (e.g. microcontroller) which is connected to the main control 20 of the laundry treatment machine via a communication line 22.

Auf der Leiterplatte 24 der Motorelektronik 10 sind ein Gleichrichter 32, der von der Hauptsteuerung 20 über eine Energieversorgungsleitung 21 mit Wechselspannung versorgt wird, ein Spannungszwischenkreis 30 und eine dreiphasige Umrichterausgangsstufe 31 zum Ansteuern der drei Motorphasen des Elektromotors 8 angeordnet.A rectifier 32, which is supplied with AC voltage by the main controller 20 via a power supply line 21, a voltage intermediate circuit 30 and a three-phase converter output stage 31 for controlling the three motor phases of the electric motor 8 are arranged on the circuit board 24 of the motor electronics 10.

Die Motorelektronik 10 ist über die Hauptsteuerung 20 mit einem Schalter zu- und abschaltbar. Zur Versorgung mit Netzspannung ist die Hauptsteuerung 20 mit der Motorelektronik 10 über die Energieversorgungsleitung 21 verbunden. In der in Fig. 2 dargestellten Ausführungsform versorgt die Energieversorgungsleitung 21 von der Hauptsteuerung 20 die Motorelektronik 10 mit Netzspannung. Die Netzspannung wird im Gleichrichter 32 der Motorelektronik 10 gleichgerichtet. Die gleichgerichtete Wechselspannung auf der Motorelektronik 10 versorgt den Spannungszwischenkreis 30. Aus dem Spannungszwischenkreis 30 sind neben dem Elektromotor 8 auch weitere Aktuatoren versorgbar, wie Zirkulationspumpen oder Ablaufpumpen.The engine electronics 10 can be switched on and off via the main control 20 with a switch. In order to be supplied with mains voltage, the main control 20 is connected to the motor electronics 10 via the energy supply line 21. In the in Fig. 2 The illustrated embodiment supplies the power supply line 21 from the main controller 20 to the motor electronics 10 with mains voltage. The mains voltage is rectified in the rectifier 32 of the motor electronics 10. The rectified AC voltage on the motor electronics 10 supplies the voltage intermediate circuit 30. In addition to the electric motor 8, other actuators, such as circulation pumps or drain pumps, can also be supplied from the voltage intermediate circuit 30.

Alternativ ist die Versorgung der Motorelektronik 10 mit einer Gleichspannung möglich. Erfolgt die Stromversorgung der Motorelektronik 10 mittels der Energieversorgungsleitung 21 über eine Gleichspannung, ist derselbe Spannungszwischenkreis 30 neben der Umrichterausgangsstufe 31 zur Ansteuerung des Elektromotors 8 auch für weitere Umrichterausgangsstufen auf der Hauptsteuerung 20 zur Ansteuerung weiterer Aktuatoren verwendbar, wie z.B. einer Zirkulationspumpe oder einer Ablaufpumpe.Alternatively, the motor electronics 10 can be supplied with a direct voltage. If the motor electronics 10 are supplied with power by means of the power supply line 21 via a DC voltage, the same voltage intermediate circuit 30 can be used in addition to the converter output stage 31 to control the electric motor 8 for further converter output stages on the main control 20 to control further actuators, such as a circulation pump or a drain pump.

Die Umrichterausgangsstufe 31 ist mit dem Elektromotor über die Verbindung 13 verbunden. Außerdem wird über die Verbindung 14 das elektrische Potenzial des Statorblechs 8a des Elektromotors 8 auf die Motorelektronik 10 geführt. Zur Reduzierung einer Einkopplung elektromagnetischer Störungen auf das Maschinengehäuse 1, den darin liegenden Kabelbaum oder andere elektrisch verbundene Komponenten wie der Heizung 16 ist die Verbindung 14 auf der Motorelektronik 10 kapazitiv mit einem Bezugspotenzial der Motorelektronik 10 verbunden. Bevorzugt ist die Verbindung 14 mit einem Pol des Spannungszwischenkreises 30 der Umrichterausgangsstufe 31 zur Ansteuerung des Elektromotors 8, verbunden, damit das Statorblech 8a des Motors 8 als Abschirmung für die über die Verbindung 13 getakteten Motorphasen wirkt.The converter output stage 31 is connected to the electric motor via the connection 13. In addition, the electrical potential of the stator lamination 8a of the electric motor 8 is fed to the motor electronics 10 via the connection 14. To reduce coupling of electromagnetic interference to the machine housing 1, the wiring harness located therein or other electrically connected components such as the heater 16, the connection 14 on the motor electronics 10 is capacitively connected to a reference potential of the motor electronics 10. The connection 14 is preferably connected to one pole of the voltage intermediate circuit 30 of the converter output stage 31 for controlling the electric motor 8, so that the stator plate 8a of the motor 8 acts as a shield for the motor phases clocked via the connection 13.

Die Motorelektronik 10 erzeugt üblicherweise störende niederfrequente Oberwellenströme auf der Energieversorgungsleitung 21, die gedämpft werden müssen. Des Weiteren entstehen hochfrequente elektromagnetische Störungen durch Schaltvorgänge in der Leistungsstufe der Motorelektronik 10, die zur Ansteuerung des Elektromotors 8 dienen.The motor electronics 10 usually generate disruptive low-frequency harmonic currents on the power supply line 21, which must be attenuated. Furthermore, high-frequency electromagnetic interference occurs through switching processes in the power stage of the motor electronics 10, which are used to control the electric motor 8.

Die Komponenten zur Filterung der elektromagnetischen Störaussendung sind in dem Ausführungsbeispiel von Fig. 3 wie folgt angeordnet. Eine (schwere) Oberwellendrossel 33 zur Reduzierung der Harmonischen zur Netzfrequenz bis ca. 2 kHz ist auf der Hauptsteuerung 20 angeordnet. Die Filterkomponenten zur Dämpfung hochfrequenter Störungen sind nahe an der Störquelle montiert, bevorzugt direkt auf der Motorelektronik 10. Eine solche Filtereinrichtung ist beispielsweise eine stromkompensierte Doppeldrossel 25 zur Filterung der hochfrequenten elektromagnetischen Störaussendung (> 100kHz) der Umrichterausgangsstufe 31 der Motorelektronik 10.The components for filtering the electromagnetic interference emission are in the embodiment of FIG Fig. 3 arranged as follows. A (heavy) harmonic choke 33 for reducing the harmonics to the mains frequency up to approx. 2 kHz is arranged on the main control 20. The filter components for damping high-frequency interference are mounted close to the source of interference, preferably directly on the motor electronics 10. Such a filter device is, for example, a current-compensated double choke 25 for filtering the high-frequency electromagnetic interference emission (> 100 kHz) of the converter output stage 31 of the motor electronics 10.

Weiter weist die Motorelektronik 10 einen oder mehrere Schwingungssensoren 26 zur Erfassung von Schwingungen des Innenaggregats 2, insbesondere seines Laugenbehälters 3, sowie die Steuereinrichtung 35 zur Erfassung der Messwerte des wenigstens einen Schwingungssensors 26 und zur Ansteuerung des Elektromotors 8 auf.The engine electronics 10 also have one or more vibration sensors 26 for detecting vibrations of the indoor unit 2, in particular its tub 3, and the control device 35 for recording the measured values of the at least one vibration sensor 26 and for controlling the electric motor 8.

Die Schwingungssensoren 26 sind zum Beispiel derart ausgebildet, dass sie Drehungen oder Linearbewegungen um die Y-Achse und/oder die Z-Achse (Koordinatensystem 9) messen können. Alternativ oder zusätzlich sind mit den Schwingungssensoren 26 die diesen Drehungen bzw. Linearbewegungen zugehörigen Winkelbeschleunigungen bzw. Linearbeschleunigungen messbar. Insbesondere können eine Nickbewegung des Innenaggregats 2 (um die Y-Achse) und/oder eine Gierbewegung des Innenaggregats 2 (um die Z-Achse) messbar sein. Ergänzend können die Schwingungssensoren 26 derart ausgebildet sein, dass auch Schwingungen um die X-Achse oder in der X-Achse messbar sind.The vibration sensors 26 are designed, for example, in such a way that they rotate or linear movements around the Y-axis and / or the Z-axis (coordinate system 9) can measure. As an alternative or in addition, the angular accelerations or linear accelerations associated with these rotations or linear movements can be measured with the vibration sensors 26. In particular, a pitching movement of the indoor unit 2 (about the Y-axis) and / or a yawing movement of the indoor unit 2 (about the Z-axis) can be measured. In addition, the vibration sensors 26 can be designed in such a way that vibrations around the X-axis or in the X-axis can also be measured.

Vorzugsweise sind mindestens zwei Schwingungssensoren 26 auf der Motorelektronik 10 und/oder direkt am Laugenbehälter 3 montiert. Die Schwingungssensoren 26 liegen auf einer zur Antriebsdrehachse (X) parallelen (fiktiven) Geraden. Dabei weisen die mindestens zwei Schwingungssensoren 26 eine möglichst große Distanz zueinander auf.At least two vibration sensors 26 are preferably mounted on the motor electronics 10 and / or directly on the tub 3. The vibration sensors 26 lie on a (fictitious) straight line parallel to the drive axis of rotation (X). The at least two vibration sensors 26 have the greatest possible distance from one another.

Aus den Bewegungsinformationen der mindestens zwei Schwingungssensoren 26 ist die Lage des Massenschwerpunkts der Wäsche innerhalb der Wasch- oder Wäschetrommel 4 oberhalb einer Anlegedrehzahl, bei der die Wäsche vollständig an der Wäschetrommel 4 anliegt, exakt bestimmbar. Damit ist die Bewegung der Wäschetrommel 4 innerhalb der Waschmaschine eindeutig bestimmt und vorhersagbar.From the movement information of the at least two vibration sensors 26, the position of the center of mass of the laundry within the washing or laundry drum 4 above a feed speed at which the laundry is completely in contact with the laundry drum 4 can be precisely determined. The movement of the laundry drum 4 within the washing machine is thus clearly determined and predictable.

Anstelle mindestens zweier Schwingungssensoren 26 kann auch ein Schwingungssensor und ein Drehratensensor Anwendung finden. Dabei sind die beiden Sensoren vorzugsweise so zueinander zu montiert, dass die Erfassungsachsen beider Sensoren deckungsgleich sind.Instead of at least two vibration sensors 26, a vibration sensor and a rotation rate sensor can also be used. The two sensors are preferably to be mounted to one another in such a way that the detection axes of both sensors are congruent.

Bei dem schwingfähig aufgehängten Innenaggregat 2 ist die Beladung bzw. der Füllgrad bzw. das durch die eingefüllte Wäsche zugeladene Gewicht der Wäschetrommel 4 durch die Messung eines Einsinkweges der Reibungsdämpfer 12 messbar oder auch durch einen Vergleich einer Position der Motorelektronik 10 zu einem zum Maschinengehäuse 1 fixen Bezugspunkt. Die Messung kann auf Basis von optischen, laseroptischen, fiberoptischen, akustischen, induktiven oder magnetostriktiven Messprinzipien erfolgen. Weitere bevorzugte Messprinzipien basieren auf dem Prinzip des Differentialtransformators, der Differentialdrossel oder durch Bestimmung des Einsinkwegs auf Basis eines Wirbelstromsensors.In the case of the oscillatingly suspended indoor unit 2, the load or the degree of filling or the weight of the laundry drum 4 loaded by the loaded laundry can be measured by measuring a sinking path of the friction damper 12 or by comparing a position of the motor electronics 10 to that of the machine housing 1 Reference point. The measurement can take place on the basis of optical, laser-optical, fiber-optical, acoustic, inductive or magnetostrictive measuring principles. Further preferred measuring principles are based on the principle of the differential transformer, the differential throttle or by determining the sinking path on the basis of an eddy current sensor.

Bei einem auf einer Reflexion basierenden Prinzip, wie z.B. einem laseroptischen Messprinzip, können ein Sender 27a und ein Empfänger 27b auf der Motorelektronik 10 montiert sein. Sender 27a und Empfänger 27b des Abstandssensors wirken zum Beispiel mit einer Reflexionsfläche 34 am Boden des Maschinengehäuses 1 zusammen.In a principle based on reflection, such as Using a laser-optical measuring principle, a transmitter 27a and a receiver 27b can be mounted on the engine electronics 10. The transmitter 27a and receiver 27b of the distance sensor interact, for example, with a reflective surface 34 on the bottom of the machine housing 1.

Die erfindungsgemäße Steuerungsarchitektur mit der am Laugenbehälter 3 befestigten Motorelektronik 10 bietet aber noch weitere Optionen für eine Füllgradmessung über den Einsinkweg des Innenaggregats 2. So kann der Abstandssensor zum Beispiel auch durch einen Sender 27a' auf der Hauptsteuerung 20 und einen Empfänger 27b' auf der Motorelektronik 10 gebildet sein, die über eine Sensorleitung 27c' miteinander gekoppelt sein können. Über die Sensorleitung 27c' können zum Beispiel optische, akustische oder elektromagnetische Trägersignale übertragen werden, um die relative Lage zwischen der Hauptsteuerung 20 und der Motorelektronik 10 zu detektieren. Falls ein digitales Kommunikationssignal zwischen Sender 27a' und Empfänger 27b' ausreicht, kann in einer bevorzugten Ausgestaltung die Sensorleitung27c' entfallen und die Kommunikation zwischen Sender 27a' und Empfänger 27b' indirekt über die Kommunikationsleitung 22 erfolgen. Da die Hauptsteuerung 20 fix mit dem Maschinengehäuse 1 verbunden ist, ist die absolute Absenkung des Laugenbehälters 3 bei dessen Beladung mit Wäsche messbar und so über die Federkonstante der Federn 11 das Gewicht der Beladung bestimmbar. Bevorzugt ist die Hauptsteuerung 20 dabei nahe der Motorelektronik 10 am Maschinengehäuse 1 der Wäschebehandlungsmaschine montiert. Damit sind die Signale zwischen dem Sender 27a' und dem Empfänger 27b' möglichst ungestört, mit bestmöglicher Auflösung empfangbar. Alternativ können die Positionen von Sender 27a' und Empfänger 27b' auch vertauscht sein.The control architecture according to the invention with the motor electronics 10 attached to the tub 3 offers further options for a degree of filling measurement via the sinking path of the indoor unit 2. For example, the distance sensor can also be controlled by a transmitter 27a 'on the main control 20 and a receiver 27b' on the motor electronics 10, which can be coupled to one another via a sensor line 27c '. For example, optical, acoustic or electromagnetic carrier signals can be transmitted via the sensor line 27c ′ in order to detect the relative position between the main controller 20 and the engine electronics 10. If a digital communication signal between transmitter 27a 'and receiver 27b' is sufficient, sensor line 27c 'can be omitted in a preferred embodiment and communication between transmitter 27a' and receiver 27b 'can take place indirectly via communication line 22. Since the main control 20 is permanently connected to the machine housing 1, the absolute lowering of the tub 3 when it is loaded with laundry can be measured and the weight of the load can be determined via the spring constant of the springs 11. The main control 20 is preferably mounted near the motor electronics 10 on the machine housing 1 of the laundry treatment machine. The signals between the transmitter 27a 'and the receiver 27b' can thus be received as undisturbed as possible, with the best possible resolution. Alternatively, the positions of transmitter 27a 'and receiver 27b' can also be interchanged.

BEZUGSZIFFERNLISTEREFERENCE LIST

11
MaschinengehäuseMachine housing
22
InnenaggregatIndoor unit
33
LaugenbehälterSuds container
3a3a
Ausformung zur Aufnahme der MotorelektronikForming to accommodate the engine electronics
44th
Wasch- oder WäschetrommelWashing or laundry drum
55
TrommelriemenradDrum pulley
66
TransmissionsriemenTransmission belt
77th
MotorriemenradMotor belt pulley
7a7a
Isolator zwischen Motorriemenrad und Rotorachse des ElektromotorsInsulator between the motor belt pulley and the rotor axis of the electric motor
88th
ElektromotorElectric motor
8a8a
Statorblech des ElektromotorsStator sheet of the electric motor
99
KoordinatensystemCoordinate system
1010
MotorelektronikEngine electronics
1111
Federnfeathers
1212th
ReibungsdämpferFriction damper
1313
Verbindung der Motorelektronik mit den Motorphasen des ElektromotorsConnection of the motor electronics with the motor phases of the electric motor
1414th
Verbindung der Motorelektronik mit dem Statorblech des ElektromotorsConnection of the motor electronics with the stator plate of the electric motor
1515th
elektrischer Anschluss der Heizung an die Motorelektronikelectrical connection of the heater to the engine electronics
1616
elektrische Heizungelectric heating
2020th
Hauptsteuerung der WäschebehandlungsmaschineMain control of the laundry treatment machine
2121st
Energieversorgungsleitung von der Hauptsteuerung zur MotorelektronikPower supply line from the main control to the engine electronics
2222nd
Kommunikationsleitung zwischen Hauptsteuerung und MotorelektronikCommunication line between main control and engine electronics
2323
Öffnungopening
2424
LeiterplatteCircuit board
2525th
FilterdrosselFilter choke
2626th
Schwingungssensor oder DrehratensensorVibration sensor or yaw rate sensor
27a27a
Sender des AbstandssensorsDistance sensor transmitter
27a'27a '
Sender des AbstandssensorsDistance sensor transmitter
27b27b
Empfänger des AbstandssensorsDistance sensor receiver
27b'27b '
Empfänger des AbstandssensorsDistance sensor receiver
27c'27c '
Sensorleitung des AbstandssensorsSensor cable of the distance sensor
2828
KühlkörperHeat sink
2929
Kühlfinnen des KühlkörpersCooling fins of the heat sink
3030th
SpannungszwischenkreisVoltage intermediate circuit
3131
UmrichterausgangsstufeInverter output stage
3232
GleichrichterRectifier
3333
OberwellendrosselHarmonic choke
3434
ReflexionsflächeReflective surface
3535
SteuereinrichtungControl device

Claims (12)

  1. Inner unit (2) of a laundry treatment machine, in particular an inner unit, which is suspended such that it can vibrate, of a laundry treatment machine, comprising a washing tub (3), a rotatably mounted laundry drum (4) in the washing tub, an electric motor (8) for driving the laundry drum (4), and a motor electronics system (10) for actuating the electric motor (8), characterized in that
    the washing tub (3) has a shaped portion (3a) and the motor electronics system (10) is received in this shaped portion (3a) and mounted directly on the washing tub (3) by way of the said shaped portion, wherein the shaped portion (3a) is also designed for shielding the motor electronics system (10) from moisture and for protecting the motor electronics system (10) against mechanical effects.
  2. Inner unit according to Claim 1,
    characterized in that
    the shaped portion (3a) and/or the motor electronics system (10) have/has at least one opening (23) for exchanging a fluid which is located in the shaped portion (3a), in particular steam or water, with a surrounding area.
  3. Inner unit according to either of the preceding claims,
    characterized in that
    the motor electronics system (10) has a printed circuit board (24) and the components of the motor electronics system (10) are arranged at least partially suspended from the printed circuit board (24).
  4. Inner unit according to one of the preceding claims, characterized in that
    the motor electronics system (10) has at least one vibration sensor or one rate of rotation sensor (26).
  5. Inner unit according to one of the preceding claims, characterized in that
    at least one distance sensor (27a, 27b; 27a', 27b') is provided for measuring a distance between the inner unit (2) and a machine housing (1) or a part which is fixedly connected to the machine housing (1).
  6. Inner unit according to Claim 5,
    characterized in that
    the distance sensor has a transmitter (27a) which is arranged on the motor electronics system (10) and a receiver (27b) which is arranged on the motor electronics system (10), and
    the transmitter (27a) and the receiver (27b) of the distance sensor interact with a reflection surface (34) on the machine housing (1) or on a part which is fixedly connected to the machine housing (1).
  7. Inner unit according to Claim 5,
    characterized in that
    the distance sensor has a transmitter (27a') or receiver (27b') which is arranged on the motor electronics system (10) and a receiver (27b') or transmitter (27a') which is arranged on the machine housing (1) or on a part (20) which is fixedly connected to the machine housing (1).
  8. Inner unit according to one of the preceding claims, characterized in that
    at least one filter device (25, 33) is provided for damping low-frequency and/or high-frequency electromagnetic interference.
  9. Inner unit according to one of the preceding claims, characterized in that
    the electric motor (8) has a stator lamination (8a) which is electrically connected to the motor electronics system (10), preferably to a voltage intermediate circuit (30) of the motor electronics system (10).
  10. Inner unit according to one of the preceding claims, characterized in that
    an electrical insulator (7a) is arranged between a motor belt pulley (7) of the electric motor (8) and a rotor shaft of the electric motor (8).
  11. Inner unit according to one of the preceding claims, characterized in that
    the motor electronics system (10) has a heat sink (28), preferably a heat sink (28) comprising cooling fins (29).
  12. Laundry treatment machine having a machine housing (1), a main controller (20) and an inner unit (2) according to one of the preceding claims.
EP17754073.9A 2016-08-08 2017-08-04 Inner unit of a laundry treatment machine and laundry treatment machine having such an inner unit Active EP3497277B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016009537 2016-08-08
DE102017000606.7A DE102017000606A1 (en) 2016-08-08 2017-01-24 Inner unit of a laundry treatment machine and laundry treating machine with such
PCT/EP2017/000948 WO2018028825A1 (en) 2016-08-08 2017-08-04 Inner unit of a laundry treatment machine and laundry treatment machine having such an inner unit

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Publication Number Publication Date
EP3497277A1 EP3497277A1 (en) 2019-06-19
EP3497277B1 true EP3497277B1 (en) 2020-09-30

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CN (1) CN109563669B (en)
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Publication number Priority date Publication date Assignee Title
DE102021104987A1 (en) 2021-03-02 2022-09-08 Miele & Cie. Kg Textile treatment device and method for operating a textile treatment device
DE102021108006A1 (en) * 2021-03-30 2022-10-06 Diehl Ako Stiftung & Co. Kg Movement monitoring arrangement for monitoring a movement of a laundry drum of a laundry treatment appliance

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Publication number Priority date Publication date Assignee Title
DE102005037144B4 (en) 2005-02-18 2007-04-19 Diehl Ako Stiftung & Co. Kg Vibratory suspended indoor unit of a laundry treatment machine with a vibration sensor
DE102010062918A1 (en) * 2010-12-13 2012-06-14 BSH Bosch und Siemens Hausgeräte GmbH Household appliance e.g. laundry washing machine has permanent magnets that are attached at laundry drum, and stator winding that is attached to container
KR102160979B1 (en) * 2013-08-06 2020-09-29 삼성전자주식회사 Washing Machine
CN104342877B (en) * 2013-08-08 2018-04-06 博西华电器（江苏）有限公司 Laundry machine
DE102014200775A1 (en) * 2014-01-17 2015-07-23 BSH Hausgeräte GmbH Washing machine with utilization of electronic module heat loss

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CN109563669B (en) 2021-06-01
DE102017000606A1 (en) 2018-02-08
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EP3497277A1 (en) 2019-06-19
CN109563669A (en) 2019-04-02

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