U.S. patent application number 11/629492 was filed with the patent office on 2008-11-06 for method for controlling rinsing in washing machine.
This patent application is currently assigned to LG ELECTRONICS INC.. Invention is credited to Dong Won Kang.
Application Number | 20080271262 11/629492 |
Document ID | / |
Family ID | 36927659 |
Filed Date | 2008-11-06 |
United States Patent
Application |
20080271262 |
Kind Code |
A1 |
Kang; Dong Won |
November 6, 2008 |
Method for Controlling Rinsing in Washing Machine
Abstract
A method for controlling a rinsing operation of a washing
machine, which a heating course is selected in the rinsing
operation to increase sterilization of laundry and removal of
residual detergent. The method includes selecting a rinsing mode
before a washing operation is started; and performing rinsing
operations, comprising heating rinsing water, according to the
selected rinsing mode, when the washing operation according to a
selected washing course is completed. The rinsing operations are
repeated according to kinds and states of laundry, thereby
increasing rinsing capacity. Further, since the temperature of the
rinsing water is increased using a heating unit in the final
rinsing operation or in each of a designated number of times of the
rinsing operations in the late stage, including the final rinsing
operation, of the repeated rinsing operations, it is possible to
increase removal of residual' detergent and sterilization of the
laundry, thus allowing the laundry to be sanitized.
Inventors: |
Kang; Dong Won;
(Gyeongsangnam-do, KR) |
Correspondence
Address: |
KED & ASSOCIATES, LLP
P.O. Box 221200
Chantilly
VA
20153-1200
US
|
Assignee: |
LG ELECTRONICS INC.
Seoul
KR
|
Family ID: |
36927659 |
Appl. No.: |
11/629492 |
Filed: |
February 28, 2006 |
PCT Filed: |
February 28, 2006 |
PCT NO: |
PCT/KR06/00685 |
371 Date: |
July 14, 2008 |
Current U.S.
Class: |
8/159 |
Current CPC
Class: |
D06F 33/00 20130101;
D06F 39/04 20130101; D06F 35/006 20130101 |
Class at
Publication: |
8/159 |
International
Class: |
D06F 33/02 20060101
D06F033/02; D06F 39/04 20060101 D06F039/04 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 28, 2005 |
KR |
10-2005-0017023 |
Claims
1. A method for controlling a rinsing operation of a washing
machine comprising: selecting a washing course; and performing the
rinsing operation comprising heating rinsing water, when the
selected washing course is a rinsing/sterilization reinforcing
course.
2. The method as set forth in claim 1, further comprising selecting
a first rinsing mode for repeating the rinsing operations and
heating the rinsing water, when the rinsing/sterilization
reinforcing course is selected.
3. The method as set forth in claim 1, further comprising selecting
a second rinsing mode for only repeating the rinsing operations,
when the rinsing/sterilization reinforcing course is selected.
4. The method as set forth in claim 3, wherein the number of times
of the repeated rinsing operations when the rinsing/sterilization
reinforcing course is selected is larger than the number of times
of the repeated rinsing operations when another washing course is
selected.
5. A method for controlling a rinsing operation of a washing
machine comprising: selecting a rinsing mode before a washing
operation is started; and performing the rinsing operation,
comprising heating rinsing water, according to the selected rinsing
mode, when the washing operation according to a selected washing
course is completed.
6. The method as set forth in claim 5, wherein the rinsing mode is
one selected from the group consisting of a first mode for
repeating the rinsing operations and heating the rinsing water and
a second mode for only repeating the rinsing operations.
7. The method as set forth in claim 6, wherein the rinsing water is
heated only in the final rinsing operation of the repeated rinsing
operations, when the first mode is selected.
8. The method as set forth in claim 6, wherein the rinsing water is
heated only in each of a designated number of times of the rinsing
operations in the late stage, including the final rinsing
operation, of the repeated rinsing operations, when the first mode
is selected.
9. The method as set forth in claim 6, wherein the rinsing water is
heated to a temperature of 95.degree. C., when the rinsing
operation is performed according to the first mode.
10. The method as set forth in claim 5, further comprising
determining the selected rinsing mode after draining of washing
water and dehydrating of laundry are performed, when the washing
operation according to the selected washing course is completed.
Description
TECHNICAL FIELD
[0001] The present invention relates to a washing machine, and more
particularly, to a method for controlling a rinsing operation of a
washing machine, in which a heating course is selected in the
rinsing operation to increase sterilization of laundry and removal
of residual detergent.
BACKGROUND ART
[0002] Generally, a washing machine removes dust from laundry using
chemical reaction of a detergent dissolved in washing water and
friction between the washing water and the laundry due to rotating
hydraulic power of the washing water generated by mechanical
reaction, and selectively perform washing, rinsing, and dehydrating
operations.
[0003] The above rinsing operation is a process for rinsing
detergent components and contaminants from laundry by supplying
washing water, which is not mixed with a detergent, to the
laundry.
[0004] Hereinafter, with reference to FIGS. 1 and 2, a rinsing
operation of a conventional washing machine will be described in
detail.
[0005] FIG. 1 is a block diagram of a general washing machine, and
FIG. 2 is a flow chart illustrating a conventional method for
controlling a rinsing operation of a washing machine.
[0006] As shown in FIGS. 1 and 2, a conventional washing machine
comprises an input unit 11 for allowing a user to input a control
signal for controlling operations of the washing machine, a
controller 12 for controlling the overall operation of the washing
machine according to an output signal of the input unit 11, a water
supply valve driving unit 16 for operating water supply valves,
such as a cold water valve, a hot water valve, and a shower valve,
under the control of the controller 12, a drain valve driving unit
17 for operating a drain valve so that washing water supplied
through the water supply valve driving unit 16 is drained, a water
level sensing unit 14 for sensing a water level in a tub, a
rotational speed sensing unit 15 for sensing a rotational speed of
the tub, a motor driving unit 13 for operating a motor to perform a
washing operation according to a control signal of the controller
12, and a heating unit (not shown) for heating or drying the
washing water.
[0007] In the above washing machine, after a washing operation is
completed, a rinsing operation is performed, as described
below.
[0008] As shown in FIG. 2, after the washing operation is performed
according to a set course (S201), and is completed (S202), dirty
washing water resulting from the washing operation is drained
(S203).
[0009] The laundry is intermittently dehydrated for a designated
time. After the intermittent dehydrating of the laundry is
completed, the laundry is dehydrated at a rotational speed
differing from that of the intermittent dehydrating of the laundry
for a designated time (S204).
[0010] After the dehydrating of the laundry is completed, a rinsing
operation including supplying water, rinsing, and draining, is
performed (S205).
[0011] Generally, the rinsing operations are repeated a designated
number of times. After one rinsing operation is finished, it is
determined whether or not the designated number of times of the
rinsing operations have been performed (S206). When it is
determined that the designated number of times of the rinsing
operations have not been yet performed, another rinsing operation
is performed (S207).
[0012] When it is determined that the designated number of times of
the rinsing operations have been performed, the washing water is
drained (S208), and the laundry is dehydrated (S209).
[0013] The above conventional method for controlling the rinsing
operation of the washing machine has several problems, as described
below.
[0014] In order to increase a rinsing capacity of laundry during
the rinsing operation, an additional rinsing operation selected by
a user is performed. Here, the additional rinsing operation is
limited in a rinsing effect, in which washing water not containing
a detergent is supplied to the laundry to rinse detergent
components and other contaminants out of the laundry.
DISCLOSURE OF INVENTION
Technical Problem
[0015] An object of the present invention devised to solve the
problem lies on a method for controlling a rinsing operation of a
washing machine, in which a heating course is selected in the
rinsing operation to increase sterilization of laundry and removal
of residual detergent
Technical Solution
[0016] The object of the present invention can be achieved by
providing a method for controlling a rinsing operation of a washing
machine comprising selecting a washing course; and performing the
rinsing operation comprising heating rinsing water, when the
selected washing course is a rinsing/sterilization reinforcing
course.
[0017] The method further comprises selecting a first rinsing mode
for repeating the rinsing operations and heating the rinsing water,
when the rinsing/sterilization reinforcing course is selected.
[0018] The method further comprises selecting a second rinsing mode
for only repeating the rinsing operations, when the
rinsing/sterilization reinforcing course is selected.
[0019] The number of times of the repeated rinsing operations when
the rinsing/sterilization reinforcing course is selected is larger
than the number of times of the repeated rinsing operations when
another washing course is selected.
[0020] In another aspect of the present invention, provided herein
is a method for controlling a rinsing operation of a washing
machine comprising selecting a rinsing mode before a washing
operation is started; and performing the rinsing operation,
comprising heating rinsing water, according to the selected rinsing
mode, when the washing operation according to a selected washing
course is completed.
[0021] The rinsing mode is one selected from the group consisting
of a first mode for repeating the rinsing operations and heating
the rinsing water and a second mode for only repeating the rinsing
operations.
[0022] The rinsing water is heated only in the final rinsing
operation of the repeated rinsing operations, when the first mode
is selected.
Advantageous Effects
[0023] The method of the present invention has effects, as
described below.
[0024] First, the rising operations are repeated according to kinds
and states of laundry, thereby increasing a rinsing capacity.
[0025] Second, since the temperature of the rinsing water is
increased using a heating unit in the final rinsing operation or in
a designated number of times of the rinsing operations including
the final rinsing operation of the repeated rinsing operations, it
is possible to increase removal of residual detergent and
sterilization of the laundry, thus allowing the laundry to be
sanitized.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The accompanying drawings, which are included to provide a
further understanding of the invention, illustrate embodiments of
the invention and together with the description serve to explain
the principle of the invention.
[0027] In the drawings:
[0028] FIG. 1 is a block diagram of a general washing machine;
[0029] FIG. 2 is a flow chart illustrating a conventional method
for controlling a rinsing operation of a washing machine; and
[0030] FIG. 3 is a flow chart illustrating a method for controlling
a rinsing operation of a washing machine in accordance with the
present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
[0031] Reference will now be made in detail to the preferred
embodiment of the present invention, examples of which are
illustrated in the accompanying drawings.
[0032] FIG. 3 is a flow chart illustrating a method for controlling
a rinsing operation of a washing machine in accordance with the
present invention.
[0033] The method of the present invention comprises setting a
medic care program, which raises the temperature of rinsing water,
for rinsing laundry, using a heating unit, to a designated
temperature in the rinsing operation.
[0034] Preferably, the heating of the rinsing water is performed in
the final rinsing operation in consideration of the removal of
residual detergent and the sterilization of the laundry.
[0035] In accordance with the method of the present invention, the
repetition of the rinsing operations and the sterilization of the
laundry by heating the rinsing water facilitate the increase of the
rinsing capacity of the overall rinsing operations.
[0036] First, as shown in FIG. 3, in addition to the selection of a
washing course for a washing operation, a user selects one mode out
of two modes, i.e., first and second modes, for a rinsing operation
(S301).
[0037] Here, in one mode of the first and second modes, the medic
care program for increasing the sterilization of the laundry and
the rinsing capacity is selected so that the repetition of the
rinsing operations and the heating of the rinsing water are
performed, and in the other mode of the first and second modes, the
only repetition of the rinsing operations is performed.
[0038] After the washing operation is performed according to the
set course (S302), and is completed (S303), dirty washing water
resulting from the washing operation is drained (S304).
[0039] Thereafter, the laundry is intermittently dehydrated for a
designated time, and, after the intermittent dehydration is
completed, the laundry is dehydrated at a rotational speed
differing from that of the intermittent dehydration for a
designated time (S305).
[0040] Here, the dehydrating operation may be performed by a
different method.
[0041] After the dehydration is completed, the rinsing mode
selected by the user is determined (S306).
[0042] When the rinsing mode includes the repetition of the rinsing
operations and the heating of the rinsing water, the rinsing
operations are performed, as follows.
[0043] Here, one rinsing operation includes supplying water,
rinsing, and draining.
[0044] In general, the rinsing operations are repeated a designated
number of times. After one rinsing operation is completed, it is
determined whether or not the designated number of times of the
rinsing operations have been performed (S307), and the rinsing
operations are repeated until the designated number of times is
reached according to the determined result (S310).
[0045] When the final rinsing operation is performed, the rinsing
water is heated so that the temperature of the rinsing water is
raised to a designated temperature using the heating unit
(S309).
[0046] The heating of the rinsing water is not limited to the final
rinsing operation. The heating of the rinsing water using the
heating unit may be performed at each of a designated number of
times of the rinsing operations in the late stage, including the
final rinsing operation, of the overall rinsing operations.
[0047] The reason that the heating of the rinsing water is limited
to the designated number of times of the rinsing operations in the
late stage of the overall rinsing operations is that various
factors, such as energy efficiency, sterilization of laundry, and
removal of residual detergent, are considered.
[0048] As a result of the determination of the rinsing mode
selected by the user (S306), when it is determined that the general
rinsing mode, in which the heating of the rinsing water is not
performed, is selected, the rinsing operations are repeated the
designated number of times (S311).
[0049] After the rinsing operations are repeated the designated
number of times according to the set rinsing mode, the washing
machine is drained (S312), and the laundry is dehydrated
(S313).
[0050] Here, the temperature of the rinsing water is maximally
raised to 95.degree. C.
INDUSTRIAL APPLICABILITY
[0051] The present invention provides a method for controlling a
rinsing operation of a washing machine, in which the temperature of
rinsing water is raised using a heating unit a number of times
selected from the total number of times of rinsing operations,
thereby increasing an overall rinsing capacity in the rinsing
operations.
[0052] Further, the method of the present invention increases an
overall washing capacity of the washing machine to increase
consumer satisfaction, and allows laundry to be sanitized.
[0053] It will be apparent to those skilled in the art that various
modifications and variations can be made in the present invention
without departing from the spirit or scope of the invention. Thus,
it is intended that the present invention cover the modifications
and variations of this invention provided they come within the
scope of the appended claims and their equivalents.
* * * * *