Office Action 1: Notice of Allowance (2025-08-26)

CLAIMS:
What is claimed is:
1\. A method for determining a blockage of a filter of a clothes dryer, wherein the clothes dryer comprises a motor, and the method comprises: acquiring an actual rotational speed of the motor, and determining an electrical parameter corresponding to a rotational speed range as a first threshold corresponding to the actual rotational speed, wherein the actual rotational speed belongs to the rotational speed range; acquiring an actual clothes volume in the clothes dryer, and correcting the first threshold according to a correction coefficient corresponding to a clothes volume range to obtain a second threshold, wherein the actual clothes volume belongs to clothes volume range; and acquiring an actual electrical parameter of the motor, and in response to detecting that the actual electrical parameter is less than the second threshold, determining that the filter of the clothes dryer is blocked.
2\. The method according to claim 1, wherein the actual electrical parameter of the motor comprises an actual phase current; or the actual electrical parameter of the motor comprises actual power calculated according to an actual phase current of the motor.
3\. The method according to claim 1, wherein before acquiring the actual rotational speed of the motor, the method further comprise: setting N clothes volume ranges from a first clothes volume range to an N-th clothes volume range, wherein N is an integer greater than 1, and a clothes volume within a front level of clothes volume range is smaller than a clothes volume within a rear level of clothes volume range; and setting that each clothes volume range from the first clothes volume range to the N-th clothes volume range corresponds to a correction coefficient k.
4\. The method according to claim 3, wherein the second threshold is equal to the first threshold multiplied by the correction coefficient, wherein k is greater than or equal to 0 and is less than or equal to 1, and a correction coefficient corresponding to the front level of clothes volume range is greater than a correction coefficient corresponding to the rear level of clothes volume range.
5\. The method according to claim 3, wherein the second threshold is equal to a sum of the first threshold and the correction coefficient, wherein k is less than or equal to 0, and a correction coefficient corresponding to the front level of clothes volume range is greater than a correction coefficient corresponding to the rear level of clothes volume range.
6\. The method according to claim 1, wherein acquiring the actual clothes volume in the clothes dryer comprises: collecting a clothes water content and a clothes weight in the clothes dryer; and determining the actual clothes volume in the clothes dryer according to the clothes water content and the clothes weight.
7\. The method according to claim 1, wherein before acquiring the actual rotational speed of the motor, the method further comprises: setting M first rotational speed ranges from a first rotational speed range to an M-th rotational speed range, wherein M is an integer greater than 1, and a rotational speed within a front level of rotational speed range is less than a rotational speed within a rear level of rotational speed range; and setting that each rotational speed range from the first rotational speed range to the M-th rotational speed range corresponds to an electrical parameter, and an electrical parameter corresponding to the front level of rotational speed range is less than an electrical parameter corresponding to the rear level of rotational speed range.
8\. The method according to claim 1, wherein the second threshold is greater than a first reference electrical parameter and less than a second reference electrical parameter, the first reference electrical parameter is an electrical parameter of the motor when the clothes dryer operates in the rotational speed range with full load, and the second reference electrical parameter is an electrical parameter of the motor when the clothes dryer operates in the rotational speed range with no load.
9\. The method according to claim 1, wherein after detecting that the actual electrical parameter is less than the second threshold, the method further comprises: switching the actual rotational speed of the motor to a rear level of rotational speed range, determining an electrical parameter corresponding to the rear level of rotational speed range as a new first threshold, and correcting the new first threshold to obtain a new second threshold; counting a total number of times that the actual electrical parameter is less than the second threshold; and in a case where the total number of times is greater than a number threshold of times within set time duration, determining that the filter of the clothes dryer is blocked.
10\. The method according to claim 1, wherein after determining that the filter of the clothes dryer is blocked, the method further comprises: sending a filter blockage alarm.
11\. An apparatus for determining a blockage of a filter of a clothes dryer, wherein the clothes dryer comprises a motor, and the apparatus comprises a control module, a drive module and a clothes detection module; wherein the drive module is electrically connected to the motor, and the drive module is configured to acquire an actual rotational speed of the motor and an actual electrical parameter of the motor; the clothes detection module is electrically connected to the control module, and the clothes detection module is configured to acquire an actual clothes volume in the clothes dryer, and send the actual clothes volume to the control module; and the control module is electrically connected to the drive module, and the control module is configured to acquire the actual rotational speed of the motor and the actual electrical parameter of the motor which are sent by the drive module, determine an electrical parameter corresponding to a rotational speed range to which the actual rotational speed belongs as a first threshold corresponding to the actual rotational speed, acquire the actual clothes volume in the clothes dryer sent by the clothes detection module, correct the first threshold according to a correction coefficient corresponding to a clothes volume range to which the actual clothes volume belongs to obtain a second threshold, and determine that the filter of the clothes dryer is blocked in response to detecting that the actual electrical parameter is less than the second threshold.
12\. A clothes dryer, comprising a motor and the apparatus according to claim 11.
13\. A computer-readable storage medium storing a computer program which, when executed by a processor, implements the method for determining a blockage of a filter of a clothes dryer according to any one of claims 1 to 10.

OFFICE ACTION:
DETAILED ACTION
Notice of Pre-AIA  or AIA  Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Priority
Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55.
The Preliminary Amendment filed on 08/08/2023 has been acknowledged.
Allowable Subject Matter
Claims 1-13 are allowed.
The following is an examiner’s statement of reasons for allowance:  The Examiner agrees with the proposed novelty of the instant application according to the Written Opinion of the International Searching Authority (PCT/CN2022/074363 filed on 01/27/2022.  Also, in the Examiner’s opinion in regards to claim 1, Hwang (KR 20060033255 A) teaches a method for determining a blockage of a filter of a clothes dryer comprising the step of oscillating the laser toward the filter 50 during the operation of the dryer (S100 ~ S110); sensing the amount of laser light that has passed through the filter (S120); determining whether the filter 50 is mounted by comparing the detected laser light amount with a preset maximum light amount (S130); comparing the detected laser light amount with a preset minimum light amount to determine whether to clean or replace the filter 50 (S140); and generating a warning sound while stopping the dryer when the detected amount of laser light is less than the minimum light amount or more than the maximum light amount (S150 to S170) (Page 4, lines 39-43).
However, Hwang does not teach the method for determining a blockage of a filter of a clothes dryer further comprising the method steps of acquiring an actual clothes volume in the clothes dryer and correcting the first threshold according to a correction coefficient corresponding to a clothes volume range to obtain a second threshold wherein the actual clothes volume belongs to clothes volume range; acquiring an actual electrical parameter of the motor; and determining that the filter of the clothes dryer is blocked in response to detecting that the actual electrical parameter is less than the second threshold where the stated limitations are not suggested in addition to not being anticipated or taught in combination with the remaining limitations of independent claim 1.  The remaining claims are allowed due to their dependency.
In the Examiner’s opinion in regards to claim 11, Hwang (KR 20060033255 A) teaches an apparatus for determining a blockage of a filter of a clothes dryer comprising a signal input unit (100), a light quantity detecting unit (110), a control unit (120), a motor driving unit (130), a heater driving unit (140), a laser driver (150), a warning sound generator (160), and a display unit (170).  The signal input unit (100) includes an operation unit for inputting driving information selected by a user, and the light amount detecting unit (110) being oscillated by the semiconductor laser (52) to measure the amount of laser light transmitted through the filter (50) and a light quantity detecting sensor (54). The control unit (120) operates the clothes dryer according to the driving information input from the signal input unit (100), and compares the measured light amount Lq with a preset maximum light amount Lmax or minimum light amount Lmin. According to the microcomputer to control the warning sound generating unit (160) to inform whether the filter (50) is mounted, and when to clean and replace. The motor driver (130) controls the driving of the driving motor (40) according to the motor control signal of the controller (120), and the heater driver (140) drives the heater (26) according to the heater control signal of the controller (120). The laser driver (150) controls the driving of the semiconductor laser (52) according to the pulse control signal of the controller (120). The warning sound generating unit (160) generates a warning sound for warning whether the filter (50) is mounted and the cleaning and replacement time according to the warning control signal of the control unit (120), and the display unit (170) of the control unit (120) displays the operation state or error mode of the clothes dryer according to the display control signal (Page 4, lines 16-35).
However, Hwang does not teach the structural limitations of the apparatus for determining a blockage of a filter of a clothes dryer further comprising a control module being configured to acquire the actual rotational speed of the motor and the actual electrical parameter of the motor which are sent by the drive module; determine an electrical parameter corresponding to a rotational speed range to which the actual rotational speed belongs as a first threshold corresponding to the actual rotational speed; acquire the actual clothes volume in the clothes dryer sent by the clothes detection module; correct the first threshold according to a correction coefficient corresponding to a clothes volume range to which the actual clothes volume belongs to obtain a second threshold; and determine that the filter of the clothes dryer is blocked in response to detecting that the actual electrical parameter being less than the second threshold where the stated limitations are not suggested in addition to not being anticipated or taught in combination with the remaining limitations of independent claim 11.  The remaining claims are allowed due to their dependency.
In the Examiner’s opinion in regards to claim 13, Hwang (KR 20060033255 A) teaches a non-transitory computer-reading storage medium storing a computer program which, when executed by a processor, and implements the method for determining a blockage of a filter of a clothes dryer comprising the step of oscillating the laser toward the filter 50 during the operation of the dryer (S100 ~ S110); sensing the amount of laser light that has passed through the filter (S120); determining whether the filter 50 is mounted by comparing the detected laser light amount with a preset maximum light amount (S130); comparing the detected laser light amount with a preset minimum light amount to determine whether to clean or replace the filter 50 (S140); and generating a warning sound while stopping the dryer when the detected amount of laser light is less than the minimum light amount or more than the maximum light amount (S150 to S170) (Page 4, lines 39-43).
However, Hwang does not teach the method for determining a blockage of a filter of a clothes dryer further comprising the method steps of acquiring an actual clothes volume in the clothes dryer and correcting the first threshold according to a correction coefficient corresponding to a clothes volume range to obtain a second threshold wherein the actual clothes volume belongs to clothes volume range; acquiring an actual electrical parameter of the motor; and determining that the filter of the clothes dryer is blocked in response to detecting that the actual electrical parameter is less than the second threshold where the stated limitations are not suggested in addition to not being anticipated or taught in combination with the remaining limitations of independent claim 13.
Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee.  Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.”
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure.
Kim et al (US 9052142 B2) – The present invention relates to a dryer including a cabinet, a drum rotatably provided in the cabinet, a duct that defines a flow passage for air exiting the drum, and a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum. The filter assembly includes a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, a brush frame configured for rotational movement relative to the case about a rotational axis, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion. A first distance from a first side of the case to the rotational axis of the brush frame is longer than a second distance from a second side of the case to the rotational axis of the brush frame.
Jurmann (US 8627525 B2) - The object of the invention is thus to create a method and a washing machine with which a reliable spinning operation avoiding movement of the washing machine caused by an imbalance or damage to the washing machine caused by the drum striking the detergent solution tub is made possible.
Kim et al (US 7926201 B2) - The present invention relates to a dryer, and more particularly, to a dry with clogging detecting function which can check and display a clogging degree of an air passage.



CITED REFERENCE SUMMARIES: Ref US9052142B2: Claims:
A dryer comprising: a cabinet; a drum rotatably provided in the cabinet; a duct that defines a flow passage for air exiting the drum; and a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum, wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, a brush frame configured for rotational movement relative to the case about a rotational axis, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein a first distance from a first side of the case to the rotational axis of the brush frame is longer than a second distance from a second side of the case to the rotational axis of the brush frame.
a drum rotatably provided in the cabinet;
a duct that defines a flow passage for air exiting the drum; and
a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum,
wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, a brush frame configured for rotational movement relative to the case about a rotational axis, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein a first distance from a first side of the case to the rotational axis of the brush frame is longer than a second distance from a second side of the case to the rotational axis of the brush frame.
a case defining the filter assembly,
a filter portion configured to filter foreign substance from the air contacting the filter assembly,
a brush frame configured for rotational movement relative to the case about a rotational axis, and
a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion,
wherein a first distance from a first side of the case to the rotational axis of the brush frame is longer than a second distance from a second side of the case to the rotational axis of the brush frame.
The dryer according to claim 1 , wherein the first and second sides of the case are on opposite horizontal ends of the case.
The dryer according to claim 1 , further comprising a fan located at a position relative to the flow passage and configured to discharge air that has contacted the filter assembly, the fan being positioned closer to the first side of the case than the second side of the case.
The dryer according to claim 1 , wherein the filter portion includes a filter cleaning region within which the rotational movement of the brush frame is confined, and a foreign substance compression region configured to receive the foreign substance that has separated from the filter portion.
The dryer according to claim 4 , wherein a first area of the foreign substance compression region located on a first side of the rotational axis is less than a second area of the foreign substance compression region located at a second side of the rotational axis.
The dryer according to claim 4 , wherein at least a portion of the foreign substance compression region is located above the rotational axis of the brush frame, and wherein at least a portion of the foreign substance compression region is located below the rotational axis of the brush frame.
The dryer according to claim 1 , wherein the filter portion has a circular shape with a center located at the rotational axis of the brush frame, and wherein a length of the brush frame is substantially equal to a radius of the filter portion.
The dryer according to claim 1 , further comprising: a magnet supported by the brush frame; a first sensor supported by the case, located at a first end point of a range of rotational movement of the brush frame, and configured to sense a magnetic force generated by the magnet; and a second sensor supported by the case, located at a second end point of the range of rotational movement of the brush frame, and configured to sense the magnetic force generated by the magnet.
a magnet supported by the brush frame;
a first sensor supported by the case, located at a first end point of a range of rotational movement of the brush frame, and configured to sense a magnetic force generated by the magnet; and
a second sensor supported by the case, located at a second end point of the range of rotational movement of the brush frame, and configured to sense the magnetic force generated by the magnet.
The dryer according to claim 1 , further comprising a plurality of radial frames extending radially outward from the rotational axis of the brush frame, wherein at least two of the plurality of radial frames each include a plurality of projections spaced apart from one another along a length of the radial frame, the plurality of projections being configured to separate the foreign substance from the brush.
The dryer according to claim 9 , wherein each of the plurality of projections on a first radial frame includes a first sloped surface and each of the plurality of projections on a second radial frame includes a second sloped surface, the first and second sloped surfaces being oriented to substantially face each other.
The dryer according to claim 1 , wherein the case includes a first case portion having a first filter portion, and a second case portion having a second filter portion, the first and second case portions being configured to face each other and define a space therebetween, the brush frame being configured to rotate within the space, and wherein the brush is provided on opposite sides of the brush frame to separate the foreign substance from both the first and second filter portions.
The dryer according to claim 11 , wherein the brush frame defines grooved seating portions on opposite sides, and wherein the brush includes a body portion configured to be seated within the seating portion and a plurality of brush projections projecting outward from the body portion, the plurality of brush projections being spaced apart from one another at predetermined intervals.
The dryer according to claim 11 , wherein the brush frame includes a rotation shaft along the rotational axis, and wherein a surface of one of the first and second case portions includes a gear seating portion protruding toward the other of the first and second case portions, a brush driving gear being seated in the gear seating portion and attached to the rotation shaft.
a brush driving gear being seated in the gear seating portion and attached to the rotation shaft.
The dryer according to claim 13 , further comprising: a brush driving motor; and a motor gear coupled to a rotation shaft of the brush driving motor and further coupled to the brush driving gear, wherein a straight line connecting a rotational axis of the brush driving gear and a rotational axis of the motor gear is oriented at a predetermined angle with respect to a straight line vertical to the ground.
a brush driving motor; and
a motor gear coupled to a rotation shaft of the brush driving motor and further coupled to the brush driving gear,
wherein a straight line connecting a rotational axis of the brush driving gear and a rotational axis of the motor gear is oriented at a predetermined angle with respect to a straight line vertical to the ground.
The dryer according to claim 1 , wherein the rotational axis of the brush frame is horizontally offset with respect to a vertical center line of the filter portion.
The dryer according to claim 1 , wherein a first range of rotational movement of the brush frame from a vertical position toward a first side of the case is greater than a second range of rotational movement of the brush frame from the vertical position toward a second side of the case.
A dryer comprising: a cabinet; a drum rotatably provided in the cabinet; a duct that defines a flow passage for air exiting the drum; and a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum, wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, a brush frame configured for rotational movement relative to the case about a rotational axis, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein the rotational axis of the brush frame is horizontally offset with respect to a vertical center line of the filter portion.
a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum, wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, a brush frame configured for rotational movement relative to the case about a rotational axis, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein the rotational axis of the brush frame is horizontally offset with respect to a vertical center line of the filter portion.
wherein the rotational axis of the brush frame is horizontally offset with respect to a vertical center line of the filter portion.
A dryer comprising: a cabinet; a drum rotatably provided in the cabinet; a duct that defines a flow passage for air exiting the drum; and a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum, wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, a brush frame configured for rotational movement relative to the case about a rotational axis, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein a first range of rotational movement of the brush frame from a vertical position toward a first side of the case is greater than a second range of rotational movement of the brush frame from the vertical position toward a second side of the case.
wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, a brush frame configured for rotational movement relative to the case about a rotational axis, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein a first range of rotational movement of the brush frame from a vertical position toward a first side of the case is greater than a second range of rotational movement of the brush frame from the vertical position toward a second side of the case.
wherein a first range of rotational movement of the brush frame from a vertical position toward a first side of the case is greater than a second range of rotational movement of the brush frame from the vertical position toward a second side of the case.
A dryer comprising: a cabinet; a drum rotatably provided in the cabinet; a duct that defines a flow passage for air exiting the drum; and a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum, wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, the filter portion having a filter cleaning region and a foreign substance compression region, a brush frame configured for rotational movement relative to the case about a rotational axis, the rotational movement of the brush frame being confined within the filter cleaning region, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein the foreign substance compression region is configured to receive the separated foreign substance, and wherein a first area of the foreign substance compression region located on a first side of the rotational axis is less than a second area of the foreign substance compression region located at a second side of the rotational axis.
wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, the filter portion having a filter cleaning region and a foreign substance compression region, a brush frame configured for rotational movement relative to the case about a rotational axis, the rotational movement of the brush frame being confined within the filter cleaning region, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein the foreign substance compression region is configured to receive the separated foreign substance, and wherein a first area of the foreign substance compression region located on a first side of the rotational axis is less than a second area of the foreign substance compression region located at a second side of the rotational axis.
a filter portion configured to filter foreign substance from the air contacting the filter assembly, the filter portion having a filter cleaning region and a foreign substance compression region,
a brush frame configured for rotational movement relative to the case about a rotational axis, the rotational movement of the brush frame being confined within the filter cleaning region, and
wherein the foreign substance compression region is configured to receive the separated foreign substance, and wherein a first area of the foreign substance compression region located on a first side of the rotational axis is less than a second area of the foreign substance compression region located at a second side of the rotational axis.
A dryer comprising: a cabinet; a drum rotatably provided in the cabinet; a duct that defines a flow passage for air exiting the drum; and a filter assembly located at a position relative to the flow passage and contacting air that has exited the drum, wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, the filter portion having a filter cleaning region and a foreign substance compression region, a brush frame configured for rotational movement relative to the case about a rotational axis, the rotational movement of the brush frame being confined within the filter cleaning region, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein the foreign substance compression region is configured to receive the separated foreign substance, wherein at least a portion of the foreign substance compression region is located above the rotational axis of the brush frame, and wherein at least a portion of the foreign substance compression region is located below the rotational axis of the brush frame.
wherein the filter assembly includes: a case defining the filter assembly, a filter portion configured to filter foreign substance from the air contacting the filter assembly, the filter portion having a filter cleaning region and a foreign substance compression region, a brush frame configured for rotational movement relative to the case about a rotational axis, the rotational movement of the brush frame being confined within the filter cleaning region, and a brush that is supported by the brush frame and configured to separate the foreign substance from the filter portion, wherein the foreign substance compression region is configured to receive the separated foreign substance, wherein at least a portion of the foreign substance compression region is located above the rotational axis of the brush frame, and wherein at least a portion of the foreign substance compression region is located below the rotational axis of the brush frame.
wherein the foreign substance compression region is configured to receive the separated foreign substance, wherein at least a portion of the foreign substance compression region is located above the rotational axis of the brush frame, and wherein at least a portion of the foreign substance compression region is located below the rotational axis of the brush frame.
Ref US8627525B2: Claims:
A method for controlling a spinning cycle of a washing machine with a detergent solution tub spring-mounted in a housing in which a drum is supported so that it can rotate around a substantially horizontal axis, with a variable speed-regulated drive which drives the drum, with a device for detecting a speed of the drum, a device for detecting a movement of the detergent solution tub which is caused by items of laundry unevenly distributed in the drum, with a program controller, which controls the spinning cycle including the speed of the drum and its cycle over time, the method comprising: accelerating the drum up to a first speed at which the laundry items essentially lie firmly against the wall of the drum; detecting, with at least one sensor of the device for detecting, a movement of the detergent solution tub in at least one direction for at least one predetermined period during the rotation of the drum at a speed that is equal to or greater than the first speed; detecting the speed of the drum and determining an amplitude of the movement for the recorded direction; determining further movement amplitudes for known or detected speeds during the predetermined period; determining a change in a ratio, the ratio being the movement amplitude over the speed of the drum; and controlling, with the program controller, a subsequent portion of the spinning cycle as a function of the change of the ratio.
accelerating the drum up to a first speed at which the laundry items essentially lie firmly against the wall of the drum;
detecting, with at least one sensor of the device for detecting, a movement of the detergent solution tub in at least one direction for at least one predetermined period during the rotation of the drum at a speed that is equal to or greater than the first speed;
detecting the speed of the drum and determining an amplitude of the movement for the recorded direction;
determining further movement amplitudes for known or detected speeds during the predetermined period;
determining a change in a ratio, the ratio being the movement amplitude over the speed of the drum; and
controlling, with the program controller, a subsequent portion of the spinning cycle as a function of the change of the ratio.
The method of claim 1 , wherein said detecting a movement comprises detecting a movement of the detergent solution tub in directions lying perpendicular to one another.
The method of claim 2 , further comprising determining a resulting movement and a movement amplitude from the detected movements.
The method of claim 1 , wherein the at least one predetermined period for detecting the movement amplitude is equal to or greater than a period in which the drum can execute at least one half revolution.
The method of claim 1 , wherein said determining a change in the movement amplitude comprises determining the change from two consecutive detections of the movement.
The method of claim 5 , wherein said determining a change in the movement amplitude comprises determining the change over the speed from a difference quotient.
The method of claim 1 , further comprising extrapolating a movement amplitude from the change of the ratio which is compared with a predetermined limit value of the movement amplitude.
The method of claim 1 , further comprising comparing the change in the r
[Truncated to input limit]