U.S. patent application number 15/561793 was filed with the patent office on 2018-05-31 for control method of washing machine and washing machine.
This patent application is currently assigned to Qingdao Haier Drum Washing Machine Co., Ltd.. The applicant listed for this patent is Qingdao Haier Drum Washing Machine Co., Ltd.. Invention is credited to Zongrui Chi, Zuoqiang Li, Limei Wang.
Application Number | 20180148877 15/561793 |
Document ID | / |
Family ID | 57004192 |
Filed Date | 2018-05-31 |
United States Patent
Application |
20180148877 |
Kind Code |
A1 |
Chi; Zongrui ; et
al. |
May 31, 2018 |
CONTROL METHOD OF WASHING MACHINE AND WASHING MACHINE
Abstract
A control method of washing machine and a washing machine
adopting the control method are provided. The washing machine
includes a master control board, and an acceleration sensor
configured to detect vibration of an outer drum. At least in a
high-speed dewatering phase, the master control board is configured
to determine whether to perform load redistribution according to
vibration data, detected by the acceleration sensor, regarding the
outer drum, and issue an instruction. Since the washing machine
determines whether to perform load redistribution according to
vibration data, detected by the acceleration sensor, regarding the
outer drum in the high-speed dewatering phase, various uncontrolled
vibrations and displacements can be restrained in advance, thereby
increasing operational reliability of the washing machine, avoiding
generating a collision of the drum and increasing washing
efficiency and service life of the washing machine.
Inventors: |
Chi; Zongrui; (Shandong,
CN) ; Wang; Limei; (Shandong, CN) ; Li;
Zuoqiang; (Shandong, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Qingdao Haier Drum Washing Machine Co., Ltd. |
Shandong |
|
CN |
|
|
Assignee: |
Qingdao Haier Drum Washing Machine
Co., Ltd.
Shandong
CN
|
Family ID: |
57004192 |
Appl. No.: |
15/561793 |
Filed: |
March 25, 2016 |
PCT Filed: |
March 25, 2016 |
PCT NO: |
PCT/CN2016/077389 |
371 Date: |
February 13, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
D06F 2202/12 20130101;
D06F 33/00 20130101; D06F 37/203 20130101; D06F 2222/00 20130101;
D06F 2204/065 20130101 |
International
Class: |
D06F 33/02 20060101
D06F033/02 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 27, 2015 |
CN |
201510140737.8 |
Claims
1. A control method of a washing machine, wherein the washing
machine comprises a master control board, and an acceleration
sensor configured to detect vibration of an outer drum, wherein the
master control board is configured to, at least in a high-speed
dewatering phase, determine whether to perform load redistribution
according to vibration data, detected by the acceleration sensor,
regarding the outer drum, and issue an instruction.
2. The control method according to claim 1, wherein the
acceleration sensor is configured to output vibration data in three
directions of orthogonal X axis, Y axis and Z axis of the outer
drum to the master control board, and the master control board is
configured to determine a vibration level of the outer drum
according to the vibration data received from the acceleration
sensor, wherein the washing machine is controlled by the master
control board to perform load redistribution when the vibration
level is greater than a preset level threshold.
3. The control method according to claim 2, wherein a dewatering
phase of the washing machine has a low-speed operation phase and
the high-speed dewatering phase, in at least one the low-speed
operation phase, a washing phase and a rinsing phase of the washing
machine, an eccentric detection method is adopted by the washing
machine to determine whether to perform load redistribution.
4. The control method according to claim 3, comprising: step A1, in
the washing machine, executing a dewatering process to enter the
low-speed operation phase; step B1, in the washing machine,
determining whether an eccentric value of the outer drum detected
by the eccentric detection method is greater than a preset
eccentric value; if the eccentric value of the outer drum is
greater than the preset eccentric value, step D1 is executed,
otherwise, step C1 is executed; step C1, through the master control
board, obtaining a current vibration level of the outer drum
according to the vibration data, detected by the acceleration
sensor, regarding the outer drum, and determining whether the
current vibration level is greater than a preset level threshold;
if the current vibration level is greater than the preset level
threshold, step D1 is executed, otherwise, step E1 is executed;
step D1, in the washing machine, performing load redistribution;
step E1, in the washing machine, entering the high-speed dewatering
phase to perform high-speed dewatering, and starting to time; step
F1, determining whether timekeeping time reaches or exceeds a
preset dewatering time; if the timekeeping time reaches or exceeds
the preset dewatering time, dewatering is ended, otherwise, step G1
is executed; and step G1, through the master control board,
obtaining the current vibration level of the outer drum according
to the vibration data, detected by the acceleration sensor,
regarding the outer drum, and determining whether the current
vibration level is greater than the preset level threshold; if the
current vibration level is greater than the preset level threshold,
the dewatering process proceeds to step F1 after load
redistribution is performed, otherwise, the dewatering process
proceeds to step F1 directly.
5. The method according to claim 4, wherein the control method
proceeds to step B1 after load redistribution is performed by the
washing machine in step D1.
6. The control method according to claim 4, wherein an alarm is
issued from the washing machine when a total number of the load
redistribution performed by the washing machine exceeds a preset
value.
7. The control method according to claim 3, comprising: step A2, in
the washing machine, executing a washing/rinsing process and
starting to time; step B2, determining whether timekeeping time
reaches or exceeds a preset washing/rinsing time; if the
timekeeping time reaches or exceeds the preset washing/rinsing
time, washing/rinsing is ended, otherwise step C2 is executed; step
C2, in the washing machine, determining whether an eccentric value
of the outer drum detected by the eccentric detection method is
greater than the preset eccentric value; if the eccentric value of
the outer drum is greater than the preset eccentric value, step E2
is executed, otherwise, step D2 is executed; step D2, through the
master control board, obtaining the current vibration level of the
outer drum according to the vibration data, detected by the
acceleration sensor, regarding the outer drum, and determining
whether the current vibration level is greater than the preset
level threshold; if the current vibration level is greater than the
preset level threshold, step E2 is executed, otherwise proceeding
to step B2 directly; and step E2, proceeding to step B2 after load
redistribution is performed in the washing machine.
8. A washing machine, comprising a master control board, and an
acceleration sensor configured to detect vibration of an outer
drum, wherein the washing machine adopts the following control
method: the master control board is configured to, at least in a
high-speed dewatering phase, determine whether to perform load
redistribution according to vibration data, detected by the
acceleration sensor, regarding the outer drum, and issue an
instruction.
9. The washing machine according to claim 8, wherein the washing
machine is a drum washing machine, and the acceleration sensor is
arranged on an outer circumferential wall of the outer drum and is
located at a front part of the outer drum.
10. The washing machine according to claim 8, wherein the washing
machine is an impeller washing machine, and the acceleration sensor
is arranged on one of a circumferential part of the outer drum, a
bottom of the outer drum, and a hanger rod of the washing
machine.
11. The control method according to claim 4, wherein an alarm is
issued from the washing machine when accumulative time of the load
redistribution performed by the washing machine exceeds a preset
value.
12. The control method according to claim 4, comprising: step A2,
in the washing machine, executing a washing/rinsing process and
starting to time; step B2, determining whether timekeeping time
reaches or exceeds a preset washing/rinsing time; if the
timekeeping time reaches or exceeds the preset washing/rinsing
time, washing/rinsing is ended, otherwise step C2 is executed; step
C2, in the washing machine, determining whether an eccentric value
of the outer drum detected by the eccentric detection method is
greater than the preset eccentric value; if the eccentric value of
the outer drum is greater than the preset eccentric value, step E2
is executed, otherwise, step D2 is executed; step D2, through the
master control board, obtaining the current vibration level of the
outer drum according to the vibration data, detected by the
acceleration sensor, regarding the outer drum, and determining
whether the current vibration level is greater than the preset
level threshold; if the current vibration level is greater than the
preset level threshold, step E2 is executed, otherwise proceeding
to step B2 directly; and step E2, proceeding to step B2 after load
redistribution is performed in the washing machine.
13. The control method according to claim 5, comprising: step A2,
in the washing machine, executing a washing/rinsing process and
starting to time; step B2, determining whether timekeeping time
reaches or exceeds a preset washing/rinsing time; if the
timekeeping time reaches or exceeds the preset washing/rinsing
time, washing/rinsing is ended, otherwise step C2 is executed; step
C2, in the washing machine, determining whether an eccentric value
of the outer drum detected by the eccentric detection method is
greater than the preset eccentric value; if the eccentric value of
the outer drum is greater than the preset eccentric value, step E2
is executed, otherwise, step D2 is executed; step D2, through the
master control board, obtaining the current vibration level of the
outer drum according to the vibration data, detected by the
acceleration sensor, regarding the outer drum, and determining
whether the current vibration level is greater than the preset
level threshold; if the current vibration level is greater than the
preset level threshold, step E2 is executed, otherwise proceeding
to step B2 directly; and step E2, proceeding to step B2 after load
redistribution is performed in the washing machine.
14. The control method according to claim 6, comprising: step A2,
in the washing machine, executing a washing/rinsing process and
starting to time; step B2, determining whether timekeeping time
reaches or exceeds a preset washing/rinsing time; if the
timekeeping time reaches or exceeds the preset washing/rinsing
time, washing/rinsing is ended, otherwise step C2 is executed; step
C2, in the washing machine, determining whether an eccentric value
of the outer drum detected by the eccentric detection method is
greater than the preset eccentric value; if the eccentric value of
the outer drum is greater than the preset eccentric value, step E2
is executed, otherwise, step D2 is executed; step D2, through the
master control board, obtaining the current vibration level of the
outer drum according to the vibration data, detected by the
acceleration sensor, regarding the outer drum, and determining
whether the current vibration level is greater than the preset
level threshold; if the current vibration level is greater than the
preset level threshold, step E2 is executed, otherwise proceeding
to step B2 directly; and step E2, proceeding to step B2 after load
redistribution is performed in the washing machine.
15. The washing machine according to claim 8, wherein the
acceleration sensor is configured to output vibration data in three
directions of orthogonal X axis, Y axis and Z axis of the outer
drum to the master control board, and the master control board is
configured to determine a vibration level of the outer drum
according to the vibration data received from the acceleration
sensor, wherein the washing machine is controlled by the master
control board to perform load redistribution when the vibration
level is greater than a preset level threshold.
16. The washing machine according to claim 15, wherein a dewatering
phase of the washing machine has a low-speed operation phase and
the high-speed dewatering phase, in at least one the low-speed
operation phase, a washing phase and a rinsing phase of the washing
machine, an eccentric detection method is adopted by the washing
machine to determine whether to perform load redistribution.
17. The washing machine according to claim 16, wherein the control
method of the washing machine comprises: step A1, in the washing
machine, executing a dewatering process to enter the low-speed
operation phase; step B1, in the washing machine, determining
whether an eccentric value of the outer drum detected by the
eccentric detection method is greater than a preset eccentric
value; if the eccentric value of the outer drum is greater than the
preset eccentric value, step D1 is executed, otherwise, step C1 is
executed; step C1, through the master control board, obtaining a
current vibration level of the outer drum according to the
vibration data, detected by the acceleration sensor, regarding the
outer drum, and determining whether the current vibration level is
greater than a preset level threshold; if the current vibration
level is greater than the preset level threshold, step D1 is
executed, otherwise, step E1 is executed; step D1, in the washing
machine, performing load redistribution; step E1, in the washing
machine, entering the high-speed dewatering phase to perform
high-speed dewatering, and starting to time; step F1, determining
whether timekeeping time reaches or exceeds a preset dewatering
time; if the timekeeping time reaches or exceeds the preset
dewatering time, dewatering is ended, otherwise, step G1 is
executed; and step G1, through the master control board, obtaining
the current vibration level of the outer drum according to the
vibration data, detected by the acceleration sensor, regarding the
outer drum, and determining whether the current vibration level is
greater than the preset level threshold; if the current vibration
level is greater than the preset level threshold, the dewatering
process proceeds to step F1 after load redistribution is performed,
otherwise, the dewatering process proceeds to step F1 directly.
18. The washing machine according to claim 17, wherein the control
method proceeds to step B1 after load redistribution is performed
by the washing machine in step D1.
19. The washing machine according to claim 17, wherein an alarm is
issued from the washing machine when a total number of the load
redistribution performed by the washing machine exceeds a preset
value.
20. The washing machine according to claim 8, wherein the control
method of the washing machine comprises: step A2, in the washing
machine, executing a washing/rinsing process and starting to time;
step B2, determining whether timekeeping time reaches or exceeds a
preset washing/rinsing time; if the timekeeping time reaches or
exceeds the preset washing/rinsing time, washing/rinsing is ended,
otherwise step C2 is executed; step C2, in the washing machine,
determining whether an eccentric value of the outer drum detected
by the eccentric detection method is greater than the preset
eccentric value; if the eccentric value of the outer drum is
greater than the preset eccentric value, step E2 is executed,
otherwise, step D2 is executed; step D2, through the master control
board, obtaining the current vibration level of the outer drum
according to the vibration data, detected by the acceleration
sensor, regarding the outer drum, and determining whether the
current vibration level is greater than the preset level threshold;
if the current vibration level is greater than the preset level
threshold, step E2 is executed, otherwise proceeding to step B2
directly; and step E2, proceeding to step B2 after load
redistribution is performed in the washing machine.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the washing equipment
technology, for example, relates to a control method of a washing
machine and a washing machine adopting the control method.
BACKGROUND
[0002] In a low-speed operation phase of a washing machine,
collision of a drum sometimes occurs due to load imbalance in an
inner drum. With regard to such situation, an eccentric detection
method is generally adopted in the washing machine. However, the
eccentric detection method has low precision and poor reliability,
and sometimes fails to perform the detection in time, leading to
various problems, such as a delay, noise, vibrations, displacement
of the entire machine and the like.
[0003] When a dewatering process is performed in the washing
machine, an eccentric detection is generally performed in a
low-speed phase firstly. If loads are distributed uniformly in the
inner drum and the eccentric value is small, a rotating speed is
gradually increased. However, with the increase of the rotating
speed, water in the loads becomes less. Accordingly, a distribution
state of the loads in the inner drum is changed uncertainly, and
thus, the noises, the vibrations, the displacement of the entire
machine and the like are easily caused. Moreover, besides the
increase of the rotating speed, resonance generated by mechanical
configurations such as an electrical device, a housing and the like
may also lead to the noise, the vibrations and the displacement of
the entire machine. If this state is not corrected in time, a
strong vibration would arise in the dewatering phase, leading to
the noise and even the displacement of the entire machine.
[0004] Currently, in a high-speed dewatering state of the washing
machine, the eccentric detection process is performed by the
washing machine only if the collusion of the drum, or the strong
vibration and the displacement of the entire machine occur, so as
to reduce the rotating speed of the washing machine and
redistribute the loads. Then, the eccentric detection is performed
again, and the high-speed operation is restarted. However, as for a
small vibration which is generally uncontrollable, no eccentric
detection process is provided in the procedure, and small vibration
is ignored (since the eccentric detection is not accurate at high
rotating speed). If a gap between an outer drum and the housing is
decreased, the outer drum may also collide with a box body due to
the small vibration, causing the noise, the vibration, displacement
of the entire machine and the like in the washing machine. A common
treatment method is to perform the eccentric detection process only
after the rotating speed of a motor is reduced, which apparently
fails to meet requirements.
[0005] At present, a three-dimensional displacement type vibration
sensor is adopted by some washing machines, and configured to
detect a displacement of the vibration through a Hall effect.
However, the delay in detection and collision of the drum sometimes
occur for the displacement type vibration sensor. As a result, the
data of the displacement type sensor is fed back after the
vibration and displacement of the entire machine have occurred.
That is to say, the measured data fails to be used to control the
vibrations.
[0006] In view of the above problems, a new control method of a
washing machine is urgently needed to be provided to solve problems
of the washing machine in a high-speed dewatering phase, such as
high noise, large vibration of the entire machine, collision of the
drum and the like.
SUMMARY
[0007] Embodiments of the present disclosure propose a control
method of a washing machine, through which the washing machine is
capable of reliably operating and avoiding collision of a drum in a
high-speed dewatering phase.
[0008] Embodiments of the present disclosure further propose a
washing machine capable of reliably operating and avoiding
collision of a drum in a high-speed dewatering phase.
[0009] In an aspect, embodiments of the present disclosure provide
a control method of a washing machine. The washing machine includes
a master control board, and an acceleration sensor configured to
detect vibration of an outer drum. The master control board is
configured to, at least in a high-speed dewatering phase, determine
whether to perform load redistribution according to vibration data,
detected by the acceleration sensor, regarding the outer drum, and
issue an instruction.
[0010] The acceleration sensor is configured to output the
vibration data in three directions of orthogonal X axis, Y axis and
Z axis of the outer drum to the master control board of the washing
machine. The master control board is configured to determine a
vibration level of the outer drum according to the received
vibration data. The master control board controls the washing
machine to perform load redistribution when the vibration level is
greater than the preset level threshold.
[0011] A dewatering phase of the washing machine has a low-speed
operation phase and the high-speed dewatering phase. In the
low-speed operation phase and a washing and/or rinsing phase of the
washing machine, the washing machine adopts an eccentric detection
method to determine whether to perform load redistribution.
[0012] The control method may include the following steps:
[0013] step A1, in the washing machine, executing a dewatering
process to enter the low-speed operation phase;
[0014] step B1, in the washing machine, determining whether an
eccentric value of the outer drum detected by the eccentric
detection method is greater than a preset eccentric value; if the
eccentric value of the outer drum is greater than the preset
eccentric value, step D1 is executed, otherwise, step C1 is
executed;
[0015] step C1, through the master control board, obtaining a
current vibration level of the outer drum according to the
vibration data, detected by the acceleration sensor, regarding the
outer drum, and determining whether the current vibration level is
greater than a preset level threshold; if the current vibration
level is greater than the preset level threshold, step D1 is
executed, otherwise, step E1 is executed;
[0016] step D1, through the washing machine, performing load
redistribution;
[0017] step E1, through the washing machine, entering the
high-speed dewatering phase to perform high-speed dewatering, and
starting to time;
[0018] step F1, determining whether timekeeping time reaches or
exceeds a preset dewatering time; if the timekeeping time reaches
or exceeds the preset dewatering time, dewatering is ended,
otherwise, step G1 is executed; and
[0019] step G1, through the master control board, obtaining the
current vibration level of the outer drum according to the
vibration data, detected by the acceleration sensor, regarding the
outer drum, and determining whether the current vibration level is
greater than the preset level threshold; if the current vibration
level is greater than the preset level threshold, proceeding to
step F1 after load redistribution is performed, otherwise,
proceeding to step F1 directly.
[0020] The control method proceeds to step B1 after load
redistribution is performed by the washing machine in step D1.
[0021] An alarm is issued from the washing machine when a total
number and/or accumulative time of the load redistribution
performed by the washing machine exceeds a preset value.
[0022] The control method may include the following steps:
[0023] step A2, in the washing machine, executing a washing/rinsing
process and starting to time;
[0024] step B2, determining whether timekeeping time reaches or
exceeds a preset washing/rinsing time; if the timekeeping time
reaches or exceeds the preset washing/rinsing time, washing/rinsing
is ended, otherwise step C2 is executed;
[0025] step C2, in the washing machine, determining whether an
eccentric value of the outer drum (1) detected by the eccentric
detection method is greater than the preset eccentric value; if the
eccentric value of the outer drum is greater than the preset
eccentric value, step E2 is executed, otherwise, step D2 is
executed;
[0026] step D2, through the master control board, obtaining the
current vibration level of the outer drum according to the
vibration data, detected by the acceleration sensor, regarding the
outer drum, and determining whether the current vibration level is
greater than the preset level threshold; if the current vibration
level is greater than the preset level threshold, step E2 is
executed, otherwise proceeding to step B2 directly; and
[0027] step E2, proceeding to step B2 after load redistribution is
performed through the washing machine.
[0028] In another aspect, embodiments of the present disclosure
provide a washing machine. The washing machine includes an
acceleration sensor configured to detect vibration of an outer
drum, and the washing machine is operated according to the above
control method of the washing machine.
[0029] The washing machine may be a drum washing machine. The
acceleration sensor is arranged on an outer circumferential wall of
the outer drum and is located at a front part of the outer
drum.
[0030] The washing machine may be an impeller washing machine. An
acceleration sensor can be arranged on a circumferential part or a
bottom of the outer drum, or arranged on a hanger rod of the
washing machine.
[0031] Embodiments of the present disclosure have beneficial
effects described below.
[0032] According to the control method of the washing machine
provided by embodiments of the present disclosure, in the
high-speed dewatering phase, it is determined whether to perform
load redistribution according to the vibration data, detected by
the acceleration sensor, regarding the outer drum, and an
instruction is issued. The acceleration sensor can reflect
vibration conditions of the outer drum more sensitively, and
execute restraint on various uncontrolled vibrations and
displacements in advance, thereby increasing operational
reliability of the washing machine, avoiding generating collision
of the drum and increasing washing efficiency and service life of
the washing machine.
[0033] Since the washing machine provided by embodiments of the
present disclosure adopts the above control method, operation is
more reliable, thereby effectively avoiding collision of the drum
and realizing high washing efficiency and long service life.
BRIEF DESCRIPTION OF DRAWINGS
[0034] FIG. 1 is a schematic diagram illustrating an installation
position of an acceleration sensor provided by embodiment I of the
present disclosure;
[0035] FIG. 2 is a flow chart I illustrating a dewatering control
method of a washing machine provided by embodiment I of the present
disclosure; and
[0036] FIG. 3 is a flow chart II illustrating a dewatering control
method of a washing machine provided by embodiment I of the present
disclosure.
[0037] In the drawings, reference numeral 1 indicates an outer
drum, and reference numeral 2 indicates an acceleration sensor.
DETAILED DESCRIPTION
[0038] Embodiments of the present disclosure will be described
below with reference to the drawings.
[0039] Embodiments of the present disclosure provide a control
method of a washing machine. The washing machine includes a master
control board, and an acceleration sensor configured to detect
vibration of an outer drum. The master control board is configured
to, at least in a high-speed dewatering phase, determine whether to
perform load redistribution according to vibration data, detected
by the acceleration sensor, regarding the outer drum, and issue an
instruction. The acceleration sensor can reflect vibration
conditions of the outer drum more sensitively, and restrain various
uncontrolled vibrations and displacements in advance, thereby
increasing operational reliability of the washing machine, avoiding
the collision of the drum and increasing washing efficiency and
service life of the washing machine.
Embodiment I
[0040] The present embodiment provides a drum washing machine and a
control method thereof. The drum washing machine includes a master
control board, and an acceleration sensor connected with the master
control board and configured to detect vibration of an outer drum.
The position of the acceleration sensor shall satisfy such a
requirement that the vibration of the outer drum can be effectively
detected. In consideration of installation convenience and wiring
convenience, in the present embodiment, the acceleration sensor 2
is arranged on an outer circumferential wall of the outer drum 1
and is located at a front part of the outer drum 1, and can vibrate
together with the outer drum 1, as shown in FIG. 1. In addition,
the acceleration sensor 2 does not contact a box body of the
washing machine and other components of the washing machine.
[0041] The acceleration sensor 2 may output vibration data of the
outer drum in three directions of orthogonal X axis, Y axis and Z
axis to the master control board. In the present embodiment, a
horizontal left-right direction indicates Y axis, an up-down
direction indicates X axis and a horizontal front-rear direction
indicates Z axis.
[0042] In the dewatering process performed in the washing machine,
the eccentric detection is not accurate in the high-speed
dewatering phase. Therefore, in the high-speed dewatering phase,
the master control board determines whether to perform load
redistribution according to vibration data, detected by the
acceleration sensor 2, regarding the outer drum, and issues an
instruction. On the contrary, in the low-speed operation phase,
detection results obtained through individually adopting the
eccentric detection method and individually adopting the
acceleration sensor are very similar. However, through the
acceleration sensor 2, the vibration data can be obtained in real
time and fed back to the master control board, thus vibration is
detected more accurately. Therefore, a control method combining the
above two detection methods can be adopted in the low-speed
operation phase.
[0043] As shown in FIG. 2, the control method of the washing
machine includes steps described below.
[0044] In step A1, the washing machine executes a dewatering
process, and enters a low-speed operation phase.
[0045] In step B1, the master control board determines whether an
eccentric value, detected by the eccentric detection method, of the
outer drum 1 is greater than a preset eccentric value. If the
eccentric value is greater than the preset eccentric value, the
process proceeds to step D1. Otherwise, the process proceeds to
step C1.
[0046] A reference data table of the vibration data and vibration
levels as well as a preset level threshold are stored in the master
control board. In step C1, the master control board determines a
current vibration level of the outer drum 1 according to the
vibration data in three directions of X axis, Y axis and Z axis
detected by the acceleration sensor 2, and determines whether the
current vibration level is greater than the preset level threshold.
If current vibration level is greater than the preset level
threshold, the process proceeds to step D1. Otherwise, the process
proceeds to step E1.
[0047] In step D1, the washing machine performs load
redistribution, and then the process proceeds to step B1.
[0048] In step E1, the washing machine enters a high-speed
dewatering phase to perform high-speed dewatering, and starts to
time.
[0049] In step F1, it is determined whether timekeeping time
reaches or exceeds a preset dewatering time. If the timekeeping
time reaches or exceeds the preset dewatering time, dewatering is
ended. Otherwise, the process proceeds to step G1.
[0050] In step G1, the master control board obtains a current
vibration level of the outer drum 1 according to the vibration data
in three directions of X axis, Y axis and Z axis detected by the
acceleration sensor 2, and determines whether the current vibration
level is greater than the preset level threshold. If the current
vibration level is greater than the preset level threshold, the
process proceeds to step F1 after the load redistribution is
performed. Otherwise, the process proceeds to step F1 directly.
[0051] The method for determining the current vibration level of
the outer drum 1 according to the received vibration data in three
directions of X axis, Y axis and Z axis in step C1 is not limited.
For example, the vibration level may be determined by obtaining the
maximum value of the vibration data in three directions and
inquiring the reference data table, or by obtaining an average
value of the vibration data in three directions and inquiring the
reference data table, or by having a modulus value which is a sum
of vectors in three directions as the vibration data and inquiring
the reference data table, and the like.
[0052] Through the control method of the present embodiment, in the
case that a gap between the outer drum 1 and a housing of the drum
washing machine is reduced, better control for various noises,
vibration and displacement of the entire machine can be realized.
Once the vibration, the noises and the displacement appear, the
acceleration sensor 2 installed on the front part of the outer drum
1 can detect a vibration condition of the outer drum 1 and output a
corresponding signal to the master control board. The master
control board determines based on the received signal and performs
corresponding treatment in advance, thereby preventing the noises,
the vibration and the displacement of the entire machine and the
like from occurring in the washing machine.
[0053] After the number and/or accumulative time of the load
redistribution performed by the washing machine exceeds the preset
value, the washing machine may issue an alarm. For example, as
shown in FIG. 3, the method includes steps described below.
[0054] In step A1, the washing machine executes a dewatering
process, and enters a low-speed operation phase.
[0055] In step b1, it is determined whether the number of load
redistribution is greater than N. If the number of load
redistribution is greater than N, an alarm is issued. Otherwise,
the process proceeds to step b2.
[0056] In step b2, it is determined whether accumulative time of
load redistribution is greater than T. If the accumulative time is
greater than T, an alarm is issued. Otherwise, the process proceeds
to step B1.
[0057] In step B1, the master control board determines whether an
eccentric value of the outer drum 1 detected through the eccentric
detection method is greater than a preset eccentric value. If the
eccentric value is greater than the preset eccentric value, the
process proceeds to step D1. Otherwise, the process proceeds to
step C1.
[0058] A corresponding reference data table of the vibration data
of the outer drum and vibration levels as well as a preset level
threshold are stored in the master control board. In step C1, the
master control board determines a current vibration level of the
outer drum 1 according to the received vibration data in three
directions of X axis, Y axis and Z axis, and determines whether the
current vibration level is greater than the preset level threshold.
If current vibration level is greater than the preset level
threshold, the process proceeds to step D1. Otherwise, the process
proceeds to step E1.
[0059] In step D1, the washing machine performs load
redistribution, and then the process proceeds to step B1.
[0060] In step E1, the washing machine enters a high-speed
dewatering phase to perform high-speed dewatering, and starts to
time.
[0061] In step F1, it is determined whether high-speed dewatering
time reaches or exceeds a preset dewatering time. If the high-speed
dewatering time reaches or exceeds the preset dewatering time,
dewatering is ended. Otherwise, the process proceeds to step
G1.
[0062] In step G1, the master control board obtains a current
vibration level of the outer drum 1 according to the vibration
data, detected by the acceleration sensor 2, in three directions of
X axis, Y axis and Z axis, and determines whether the current
vibration level is greater than the preset level threshold. If the
current vibration level is greater than the preset level threshold,
the process proceeds to step F1 after load redistribution is
performed. Otherwise, the process proceeds to step F1 directly.
[0063] In the washing/rinsing phase, the washing machine may also
adopt a control method in which the eccentric detection method and
the detection utilizing the acceleration sensor are combined. The
control method may include steps described below.
[0064] In step A2, the washing machine executes a washing/rinsing
process, and starts to time.
[0065] In step B2, it is determined whether timekeeping time
reaches or exceeds a preset washing/rinsing time. If the
timekeeping time reaches or exceeds the preset washing/rinsing
time, washing/rinsing is ended. Otherwise, the process proceeds to
step C2.
[0066] In step C2, the washing machine determines whether a
detected eccentric value of the outer drum 1 is greater than a
preset eccentric value. If the detected eccentric value of the
outer drum 1 is greater than the preset eccentric value, the
process proceeds to step E2. Otherwise, the process proceeds to
step D2.
[0067] In step D2, the master control board obtains a current
vibration level of the outer drum 1 according to the vibration
data, detected by the acceleration sensor 2, of the outer drum, and
determines whether the current vibration level is greater than the
preset level threshold. If the current vibration level is greater
than the preset level threshold, the process proceeds to step E2.
Otherwise, the process proceeds to step B2 directly.
[0068] In step E2, the process proceeds to step B2 after the load
redistribution is performed by the washing machine.
Embodiment II
[0069] The present embodiment provides an impeller washing machine
and a control method thereof. The impeller washing machine includes
a master control board, and an acceleration sensor connected with
the master control board and configured to detect vibration of an
outer drum. The acceleration sensor is arranged on a
circumferential part or a bottom of the outer drum, or arranged on
a hanger rod of the washing machine. In the dewatering process
executed by the washing machine, eccentric detection is not
accurate in the high-speed dewatering phase. Therefore, in the
high-speed dewatering phase, the master control board determines
whether to perform load redistribution according to vibration data,
detected by the acceleration sensor, regarding the outer drum, and
issues an instruction.
[0070] The control method of the impeller washing machine in the
present embodiment is similar to that of embodiment I, and is not
repeated herein.
[0071] Technical solutions of the present disclosure are described
above in combination with embodiments. These descriptions are not
interpreted as limitations to a protection scope of the present
disclosure. Based on explanation herein, those skilled in the art
can contemplate other embodiments of the present disclosure without
contributing creative labor. These embodiments shall fall into the
protection scope of the present disclosure.
INDUSTRIAL APPLICABILITY
[0072] The present disclosure provides a control method for a
washing machine and a washing machine adopting the control method.
The washing machine includes a master control board and an
acceleration sensor configured to detect vibration of an outer
drum. At least in the high-speed dewatering phase, the master
control board determines whether to perform load redistribution
according to vibration data, detected by the acceleration sensor,
regarding the outer drum, and issues an instruction. Since the
washing machine determines whether to perform load redistribution
according to vibration data, detected by the acceleration sensor,
regarding the outer drum in the high-speed dewatering phase,
various uncontrolled vibrations and displacements can be restrained
in advance, thereby increasing operational reliability of the
washing machine, avoiding generating collision of the drum and
increasing washing efficiency and service life of the washing
machine.
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