U.S. patent application number 12/076833 was filed with the patent office on 2008-10-02 for washing machine.
This patent application is currently assigned to Matsushita Electric Works, Ltd.. Invention is credited to Masaharu Machi, Takahiro Miyata, Takayuki Nakada, Asako Ogawa, Hiroshi Suda.
Application Number | 20080236208 12/076833 |
Document ID | / |
Family ID | 39791993 |
Filed Date | 2008-10-02 |
United States Patent
Application |
20080236208 |
Kind Code |
A1 |
Miyata; Takahiro ; et
al. |
October 2, 2008 |
Washing machine
Abstract
A washing machine comprises a wash tub having an opening, a door
for covering the opening, and an electrostatic atomizer. The
electrostatic atomizer is configured to produce mist of charged
fine water particles by means of electrostatic atomization to spray
the mist into the wash tub and thereby perform elimination and
deodorization with respect to laundry in the wash tub.
Inventors: |
Miyata; Takahiro;
(Hirakata-shi, JP) ; Suda; Hiroshi;
(Takatsuki-shi, JP) ; Nakada; Takayuki;
(Hikone-shi, JP) ; Machi; Masaharu;
(Shijonawate-shi, JP) ; Ogawa; Asako; (Kyoto-shi,
JP) |
Correspondence
Address: |
Edwards Angell Palmer & Dodge LLP
P.O. Box 55874
Boston
MA
02205
US
|
Assignee: |
Matsushita Electric Works,
Ltd.
Osaka
JP
|
Family ID: |
39791993 |
Appl. No.: |
12/076833 |
Filed: |
March 24, 2008 |
Current U.S.
Class: |
68/5C |
Current CPC
Class: |
D06F 37/00 20130101;
D06F 35/001 20130101; D06F 2103/04 20200201; D06F 34/30 20200201;
D06F 2101/20 20200201; D06F 34/18 20200201; D06F 34/14
20200201 |
Class at
Publication: |
68/5.C |
International
Class: |
D06F 25/00 20060101
D06F025/00; D06F 33/00 20060101 D06F033/00; D06F 37/00 20060101
D06F037/00 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 27, 2007 |
JP |
2007-080650 |
Mar 27, 2007 |
JP |
2007-080651 |
Mar 27, 2007 |
JP |
2007-080652 |
Claims
1. A washing machine, comprising: a wash tub having an opening; a
door for covering the opening; and an electrostatic atomizer,
wherein the electrostatic atomizer is configured to produce mist of
charged fine water particles by means of electrostatic atomization
to spray the mist into the wash tub and thereby to perform
elimination and deodorization with respect to laundry in the wash
tub.
2. The washing machine of claim 1, wherein the electrostatic
atomizer is configured to perform elimination and deodorization
with respect to the laundry independent of a series of wash
operations in response to an elimination and deodorization mode,
said series of wash operations including a wash operation for
performing wash with respect to the laundry.
3. The washing machine of claim 2, further comprising a fan located
together with the electrostatic atomizer between an air intake line
and a discharge line to the wash tub, wherein the fan is configured
to send air into the wash tub when the electrostatic atomizer
performs elimination and deodorization with respect to the
laundry.
4. The washing machine of claim 2, further comprising a motor,
wherein the washing machine is configured to rotate the laundry in
the wash tub by means of the motor when the electrostatic atomizer
performs elimination and deodorization with respect to the
laundry.
5. The washing machine of claim 2, further comprising a door sensor
for detecting whether the door is opened or closed, wherein the
electrostatic atomizer is configured: to stand by in response to
the elimination and deodorization mode; and to perform elimination
and deodorization with respect to the laundry for a given time when
the door sensor detects that the door is opened and subsequently
closed.
6. The washing machine of claim 2, further comprising: a door
sensor for detecting whether the door is opened or closed; and a
weight sensor for detecting weight of the laundry in the wash tub,
wherein the electrostatic atomizer is configured: to stand by in
response to the elimination and deodorization mode; and to perform
elimination and deodorization with respect to the laundry for a
given time when the door sensor detects that the door is opened and
subsequently closed and the weight detected through the weight
sensor exceeds predetermined weight.
7. The washing machine of claim 1, further comprising a controller
that is configured to sequentially control: a wash operation for
performing wash with respect to the laundry; a rinse operation for
performing rinse with respect to the laundry; a spin-drying
operation for performing spin-drying with respect to the laundry;
and an elimination and deodorization operation for performing
elimination and deodorization with respect to the laundry; wherein
the electrostatic atomizer is activated in case of the elimination
and deodorization operation, and then produces the mist of charged
fine water particles to spray the mist into the wash tub and
thereby to perform elimination and deodorization with respect to
the laundry.
8. The washing machine of claim 1, further comprising: a dryer
mechanism for drying the laundry; and a controller that is
configured to sequentially control a wash operation for performing
wash with respect to the laundry, a rinse operation for performing
rinse with respect to the laundry, a spin-drying operation for
performing spin-drying with respect to the laundry, a dry operation
for drying the laundry, and an elimination and deodorization
operation for performing elimination and deodorization with respect
to the laundry; wherein: the dryer mechanism is activated in case
of the dry operation and then dries the laundry; and the
electrostatic atomizer is activated in case of the elimination and
deodorization operation, and then produces the mist of charged fine
water particles to spray the mist into the wash tub and thereby to
perform elimination and deodorization with respect to the
laundry.
9. The washing machine of claim 7, further comprising a motor,
wherein the controller controls to activate motor to rotate the
laundry in the wash tub when the electrostatic atomizer performs
elimination and deodorization with respect to the laundry.
10. The washing machine of claim 1, further comprising a controller
that is configured to sequentially control: an elimination and
deodorization operation for performing elimination and
deodorization with respect to the laundry; and a series of wash
operations including a wash operation for performing wash with
respect to the laundry; the electrostatic atomizer is activated in
case of the elimination and deodorization operation, and then
produces the mist of charged fine water particles to spray the mist
into the wash tub and thereby to perform elimination and
deodorization with respect to the laundry.
11. The washing machine of claim 8, further comprising a motor,
wherein the controller controls to activate motor to rotate the
laundry in the wash tub when the electrostatic atomizer performs
elimination and deodorization with respect to the laundry.
Description
TECHNICAL FIELD
[0001] The invention relates generally to washing machines and more
particularly to a washing machine equipped with an electrostatic
atomizer for producing mist of charged fine water particles by
means of electrostatic atomization.
BACKGROUND ART
[0002] A prior art washing machine is configured to sequentially
perform wash, rinse and spin-drying. Another type of combo washer
dyer is configured to sequentially perform wash, rinse, spin-drying
and dry (see Japanese Patent Application Publication Number
2004-194876 issued Jul. 15, 2004).
[0003] Both of them simply perform wash operations (i.e., wash,
rinse and spin-drying operations, or wash, rinse, spin-drying and
dry operations). Accordingly, it is desired that elimination and
deodorization are improved. The elimination means to eliminate
microbes by means of wash, filtration, centrifugal separation,
electrical technique or the like.
[0004] A washing machine equipped with an ozone generator has been
therefore proposed. This machine is configured to perform
elimination and deodorization by using ozone for laundry in its
wash tub. However, in the washing machine, ozone process under high
temperature is required owing to toxicity of ozone. Because of
this, the door of the machine cannot be opened during operation of
the generator and immediately after the operation.
[0005] What is needed, therefore, is a washing machine that
provides improved elimination and deodorization without
difficulties and disadvantages of prior art washing machines.
DISCLOSURE OF THE INVENTION
[0006] It is an object of the present invention to provide
elimination (of microbes) and deodorization for laundry without
adding heat, and to eliminate the restriction that a door cannot be
opened during operation of the elimination and deodorization and
immediately after the operation.
[0007] According to a first aspect, a washing machine of the
present invention (hereinafter referred to as a "first invention")
comprises a wash tub having an opening, a door for covering the
opening, and an electrostatic atomizer. The electrostatic atomizer
is configured to produce mist of charged fine water particles by
means of electrostatic atomization to spray the mist into the wash
tub and thereby to perform elimination and deodorization with
respect to laundry in the wash tub. In the first invention, the
electrostatic atomizer sprays mist of charged fine water particles
(radical) into the wash tub and thereby perform elimination and
deodorization with respect to laundry in the wash tub. Therefore,
it is possible to provide elimination and deodorization for laundry
without adding heat, and to eliminate the restriction that the door
cannot be opened during operation of the elimination and
deodorization and immediately after the operation.
[0008] According to a second aspect, the electrostatic atomizer of
the invention is configured to perform elimination and
deodorization with respect to the laundry independent of a series
of wash operations in response to an elimination and deodorization
mode (hereinafter referred to as a "second invention"). The series
of wash operations includes a wash operation for performing wash
with respect to the laundry. In the second invention, after laundry
is loaded into the wash tub, the electrostatic atomizer can be
activated by the elimination and deodorization mode. Also in this
case, elimination and deodorization are performed with respect to
the laundry, and allergen substances such as pollen can be
inactivated. Since the mist is especially fine particles each of
which is in the order of nanometer in size, the mist can be widely
scattered and infiltrate deep into the laundry. Accordingly,
elimination, deodorization and inactivation can be effectively
performed with respect to odor components, viruses, mold and
allergen substances. In addition, it is possible to perform
elimination and deodorization with respect to unwashable clothes,
stuffed toys, shoes, straw hats and so on. The elimination and
deodorization can be performed while the wash tub is utilized as a
cloth basket up to washing on the next day. In short, it is
possible to provide elimination and deodorization for laundry
without adding heat independent of washing, and to eliminate the
restriction that a door cannot be opened during operation of the
elimination and deodorization and immediately after the
operation.
[0009] In an embodiment of the second invention, the washing
machine further comprises a fan located together with the
electrostatic atomizer between an air intake line and a discharge
line to the wash tub. In addition, the fan is configured to send
air into the wash tub when the electrostatic atomizer performs
elimination and deodorization with respect to the laundry. In this
embodiment, since the mist are widely scattered and can infiltrate
deep into the laundry, elimination, deodorization and inactivation
can be effectively performed with respect to odor components,
viruses, mold and allergen substances.
[0010] In an embodiment of the second invention, the washing
machine further comprises a motor. In addition, the washing machine
is configured to rotate the laundry in the wash tub by means of the
motor when the electrostatic atomizer performs elimination and
deodorization with respect to the laundry. In this embodiment,
since the laundry is rotated (e.g., tumbled), the mist can be
sprayed all over the laundry (e.g., clothes or the like).
[0011] In an embodiment of the second invention, the washing
machine further comprises a door sensor for detecting whether the
door is opened or closed. In addition, the electrostatic atomizer
is configured: to stand by in response to the elimination and
deodorization mode; and to perform elimination and deodorization
with respect to the laundry for a given time. The elimination and
deodorization is performed when the door sensor detects that the
door is opened and subsequently closed. In this embodiment, it is
possible to estimate that laundry is loaded into the wash tub and
then the door is closed. Accordingly, the electrostatic atomizer
can automatically perform elimination and deodorization and thereby
capable of preventing vain operation.
[0012] In an embodiment of the second invention, the washing
machine further comprises: a door sensor for detecting whether the
door is opened or closed; and a weight sensor for detecting weight
of the laundry in the wash tub. In addition, the electrostatic
atomizer is configured: to stand by in response to the elimination
and deodorization mode; and to perform elimination and
deodorization with respect to the laundry for a given time. The
elimination and deodorization is performed when the door sensor
detects that the door is opened and subsequently closed and the
weight detected through the weight sensor exceeds predetermined
weight. In this embodiment, since the weight sensor can further
detect whether or not laundry is loaded into the wash tub, vain
operation can be surely prevented.
[0013] According to a third aspect, the washing machine of the
first invention further comprises a controller (hereinafter
referred to as a "third invention"). This controller is configured
to sequentially control: a wash operation for performing wash with
respect to the laundry; a rinse operation for performing rinse with
respect to the laundry; a spin-drying operation for performing
spin-drying with respect to the laundry; and an elimination and
deodorization operation for performing elimination and
deodorization with respect to the laundry. The electrostatic
atomizer is activated in case of the elimination and deodorization
operation, and then produces the mist of charged fine water
particles to spray the mist into the wash tub and thereby to
perform elimination and deodorization with respect to the laundry.
In the third invention, wash, rinse, spin-drying, as well as
elimination and deodorization are sequentially performed. Also in
this case, it is possible to provide elimination and deodorization
for laundry without adding heat, and to eliminate the restriction
that the door cannot be opened during operation of the elimination
and deodorization and immediately after the operation.
[0014] According to a fourth aspect, the washing machine of the
first invention further comprises a dryer mechanism for drying the
laundry, and a controller (hereinafter referred to as a "fourth
invention"). The controller is configured to sequentially control:
a wash operation for performing wash with respect to the laundry; a
rinse operation for performing rinse with respect to the laundry; a
spin-drying operation for performing spin-drying with respect to
the laundry; a dry operation for drying the laundry; and an
elimination and deodorization operation for performing elimination
and deodorization with respect to the laundry. The dryer mechanism
is activated in case of the dry operation and then dries the
laundry. The electrostatic atomizer is activated in case of the
elimination and deodorization operation, and then produces the mist
of charged fine water particles to spray the mist into the wash tub
and thereby to perform elimination and deodorization with respect
to the laundry. In the fourth invention, wash, rinse, spin-drying,
dry, as well as elimination and deodorization are sequentially
performed. Also in this case, it is possible to provide elimination
and deodorization for laundry without adding heat, and to eliminate
the restriction that the door cannot be opened during operation of
the elimination and deodorization and immediately after the
operation.
[0015] In an embodiment of the third or fourth invention, the
washing machine further comprises a motor. The controller controls
to activate motor to rotate the laundry in the wash tub when the
electrostatic atomizer performs elimination and deodorization with
respect to the laundry. In this embodiment, since the laundry is
rotated (e.g., tumbled), the mist can be sprayed all over the
laundry (e.g., clothes or the like).
[0016] According to a fifth aspect, the washing machine of the
first invention further comprises a controller (hereinafter
referred to as a "fifth invention"). The controller is configured
to sequentially control: an elimination and deodorization operation
for performing elimination and deodorization with respect to the
laundry; and a series of wash operations including a wash operation
for performing wash with respect to the laundry. The electrostatic
atomizer is activated in case of the elimination and deodorization
operation, and then produces the mist of charged fine water
particles to spray the mist into the wash tub and thereby to
perform elimination and deodorization with respect to the laundry.
In the fifth invention, since elimination and deodorization is
performed before wash, wash effect can be improved. Also in this
case, it is possible to provide elimination and deodorization for
laundry without adding heat, and to eliminate the restriction that
the door cannot be opened during operation of the elimination and
deodorization and immediately after the operation.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Preferred embodiments of the invention will now be described
in further details. Other features and advantages of the present
invention will become better understood with regard to the
following detailed description and accompanying drawings where:
[0018] FIG. 1 is a schematic diagram of a first embodiment of a
washing machine, in accordance with the present invention;
[0019] FIG. 2 is a sectional view of an electrostatic atomizer in
FIG. 1;
[0020] FIGS. 3 and 4 are flow charts of a second embodiment of a
washing machine, in accordance with the present invention;
[0021] FIG. 5 is a flow chart of an embodiment; and
[0022] FIGS. 6 and 7 are flow charts of a third embodiment of a
washing machine, in accordance with the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
First Embodiment
[0023] FIG. 1 shows a first embodiment of a washing machine 1, in
accordance with the present invention. This washing machine 1 is
what is called a combo washer dyer having a wash mechanism and a
dryer mechanism that are controlled by a controller 1a comprising a
microcomputer. The construction of the dryer mechanism is well
known to those skilled in the art and is not described in detail
herein.
[0024] The washing machine 1 has a washing machine body (housing) 7
in which a wash tub 2 is put. The wash tub 2 is formed of a water
tub 8 and a rotation drum 9 located in the water tub 8. The washing
machine 1 further has a motor 10 for rotating the wash tub 2,
namely the rotation drum 9. The motor 10 is driven through the
control of the controller 1a. The rotation drum 9 is formed with
many small holes. The water tub 8 is connected with a water supply
line 11 having a water supply valve (not shown) controlled by the
controller 1a, and a drain line 12 having a drain valve (not shown)
controlled by the controller 1a.
[0025] The water tub 8 is also provided with a nozzle(s) (not
shown) for sending a warm or cold current of air from the dryer
mechanism. Accordingly, laundry in the wash tub 2 (i.e., rotation
drum 9) can be dried by the warm or cold current of air.
[0026] The wash tub 2 has an opening 13. The washing machine 1 is
provided with a door (hatch door) 4 for covering the opening 13.
The door 4 is hinged at the front of the washing machine body
7.
[0027] The washing machine body 7 is provided therein with an
electrostatic atomizer 3 located outside the wash tub 2, namely the
water tub 8. The electrostatic atomizer 3 is enclosed in a case 14
equipped with a fan 26, and the atomizer 3 and fan 26 are
controlled by the controller 1a. The case 14 is connected with one
end of an air intake hose as an air intake line 15, and the other
end is connected with an opening of the washing machine body 7. The
case 14 is also connected with one end of an discharge hose as a
discharge line 16, and the other end is located at the edge of the
opening 13 of the wash tub 2 and also directed into the rotation
drum 9.
[0028] The electrostatic atomizer 3 is formed of a discharge
electrode 17, a cooling means for supplying the electrode 17 with
water through dew formation on the electrode 17, and a high voltage
generator 19 for applying high voltage to the electrode 17 to
electrostatically atomize the water (dew drop).
[0029] FIG. 2 is a schematic diagram of the electrostatic atomizer
3. In the first embodiment, the cooling means is a Peltier unit 18
that cools air around the discharge electrode 17 to form dew on the
electrode 17 and thereby supplies water (condensation water) to the
electrode 17.
[0030] The Peltier unit 18 has a pair of Peltier circuit boards 27a
and 27b. Each of the Peltier circuit boards is formed of an
insulation board made of high thermal conductivity materials such
as alumina or nitride aluminum, and a circuit formed on one side of
the insulation board. The Peltier circuit boards 27a and 27b are
arranged opposite so that the circuit sides face to each other.
Many thermoelectric elements 28 of BiTe system are arranged and
held between the Peltier circuit boards 27a and 27b. The circuits
of the Peltier circuit boards 27a and 27b connect among neighboring
thermoelectric elements 28. The thermoelectric elements 28 are
energized through Peltier input lead wires 29 and thereby thermal
energy moves from one of the Peltier circuit boards (i.e., 27a) to
the other (i.e., 27b). The Peltier circuit board 27a is connected
with a cooling piece 21, while the Peltier circuit board 27b is
connected with a radiator 20. In the first embodiment, the radiator
20 is a radiation fin unit. The cooling piece 21 is connected with
the base of the discharge electrode 17.
[0031] The discharge electrode 17 is surrounded by a cylindrical
part 30 made of insulation material. The peripheral wall of this
cylindrical part 30 is formed with windows 30a for connecting
between the inside and outside of the cylindrical part 30. The top
opening of the cylindrical part 30 is also provided with a ring
shaped counter electrode 25. This counter electrode 25 is placed
opposite to the discharge electrode 17 so that the axis direction
of the discharge electrode 17 passes through the center of the ring
shaped counter electrode 25. However, the counter electrode 25 may
be removed.
[0032] In the electrostatic atomizer 3, the cooling piece 21 is
cooled by energizing the Peltier unit 18. The cooling piece 21 is
cooled and thereby the discharge electrode 17 is cooled, so that
the electrode 17 is supplied with water (condensation water)
through dew formation.
[0033] Since high voltage is applied between the discharge
electrode 17 and the counter electrode 25, coulomb force is applied
between the water supplied to the tip of the electrode 17 and the
electrode 25. Accordingly, the liquid surface of the water bulges
in a cone shape and consequently a Taylor cone is formed. Thus when
the Taylor cone is formed, an electronic charge concentrates on the
tip of the Taylor cone in which electric field strength becomes
large. Consequently, the coulomb force at the tip of the Taylor
cone becomes larger and then the Taylor cone is further enlarged.
Accordingly, the electronic charge density becomes high, and then
the water of the tip of the Taylor cone receives large energy
(force of repulsion by the high density of electronic charge). The
energy exceeds the surface tension of the Taylor cone (water) and
thereby bringing about split and scatter (Rayleigh splitting). Such
Rayleigh splitting is repeated, so that mist of negative-charged
fine water particles each of which is in the order of nanometer in
size is produced in large quantities. The mist is discharged into
the wash tub 2 through the discharge line 16. In this operation of
the electrostatic atomizer 3 enclosed in the case 14, the fan 26 is
activated to take the air in the case 14 through the air intake
line 15. Accordingly, since the air flow from the discharge line 16
to the wash tub 2 is produced, the mist is carried by the air flow
to be discharged into the rotation drum 9.
[0034] The washing machine 1 is further provided with a waterproof
means (not shown) for preventing the water in the wash tub 2 from
flowing into the electrostatic atomizer 3 side through the
discharge line 16. The waterproof means is formed of, but not
limited to, for example a shutter that is located at the downstream
end of the discharge line 16 and can be opened and closed through
the control of the controller 1a. In this case, the shutter is
automatically opened when the electrostatic atomizer 3 is
activated. Similarly, the shutter is automatically closed when the
electrostatic atomizer 3 is stopped.
[0035] The washing machine 1 (controller 1a) is configured to
perform (control) the electrostatic atomizer 3, the motor 10 and so
on in response to at least a wash mode and an elimination and
deodorization mode. That is, in response to the wash mode, the
washing machine 1 performs a series of wash operations, namely
wash, rinse, spin-drying and dry operations. Also, in response to
the elimination and deodorization mode, the washing machine 1
performs elimination and deodorization through the electrostatic
atomizer 3 independent of the series of wash operations.
[0036] The wash mode and the elimination and deodorization mode are
selected by pressing a mode selection button in a control panel
(not shown) attached to the washing machine 1.
[0037] When the wash mode is selected, a wash operation is
performed in the same way as a prior art washing machine (e.g.,
combo washer dyer). That is, after the door 4 is opened, laundry is
loaded into the wash tub 2 (rotation drum 9) through the opening
13. When the wash mode is selected after detergent is put in place
(e.g., a detergent dispenser with compartments) and then the door 4
is closed, water is automatically supplied to the wash tub 2 and
then the rotation drum 9 is rotated and thereby the wash operation
is performed. That is, under the control of the controller 1a, the
water supply valve is opened and closed, and the motor 10 is
driven. The detergent is also supplied from the detergent dispenser
to the wash tub 2. After the wash operation, the rinse operation is
performed. In this case, under the control of the controller 1a,
the motor 10 is driven, and the water supply valve and the drain
valve are opened and closed. After the rinse operation, the water
in the wash tub 2 is drained and then the spin-drying operation is
performed. That is, under the control of the controller 1a, the
drain valve is opened, and the motor 10 is driven. After the
spin-drying operation, the dry operation is performed. When the dry
operation is over, the wash mode (the series of wash operations) is
completed and the washing machine 1 stops the operations.
[0038] On the other hand, the elimination and deodorization mode is
performed independent of the series of wash operations. That is,
after the door 4 is opened, laundry such as clothes, articles to be
deodorized and so on is loaded into the wash tub 2 (rotation drum
9) without water through the opening 13. When the elimination and
deodorization mode is selected after the door 4 is closed, the
electrostatic atomizer 3 is activated through the control of the
controller 1a. However not limited to this, the elimination and
deodorization mode can be selected before the door 4 is opened or
while the door 6 is opened. When the electrostatic atomizer 3 is
activated, mist of charged fine water particles is produced to be
discharged into the rotation drum 9 and thereby sticking to the
laundry such as clothes and articles in the drum 9. The charged
fine water particles constituting the mist are (free) radicals, and
accordingly elimination and deodorization are performed with
respect to the laundry, and allergen substances such as pollen
sticking to the laundry can be inactivated. Since the mist is
especially fine particles each of which is in the order of
nanometer in size, the mist can be widely scattered in the wash tub
2 and infiltrate deep into the laundry such as clothes and
articles. Thereby, elimination, deodorization and inactivation can
be effectively performed with respect to odor components, viruses,
mold and allergen substances.
[0039] Therefore, it is possible to perform elimination and
deodorization with respect to unwashable clothes, stuffed toys,
shoes, straw hats and so on.
[0040] In the washing machine 1, the elimination and deodorization
can be performed while the wash tub 2 is utilized as a cloth basket
up to wash on the next day. Accordingly, the wash can be
effectively performed. Moreover, odor accumulation and bacterial
breeding in the wash tub 2 can be reliably prevented.
[0041] The washing machine 1 may be provided with a door sensor 5
for detecting whether the door 4 is opened or closed. The door
sensor 5 is connected to the controller 1a, and its door sensor
signal is supplied to the controller 1a. The controller 1a judges
whether the door 4 is opened or closed based on the door sensor
signal. In addition, the electrostatic atomizer 3 may be configured
to stand by in response to the elimination and deodorization mode,
and to perform elimination and deodorization with respect to
laundry in the wash tub 2 for a given time through the control of
the controller 1a. The elimination and deodorization is performed
when the door sensor 5 detects that the door 4 is opened and
subsequently closed. In case that the elimination and deodorization
mode is selected, when the door 4 is opened, the electrostatic
atomizer 3 does not perform elimination and deodorization and
accordingly useless operation is avoided. On the other hand, in
case that the elimination and deodorization mode is selected, a
user takes off the clothes and then opens the door 4 to load the
clothes into the wash tub 2 and subsequently closes the door 4 and
thereby the electrostatic atomizer 3 performs elimination and
deodorization for a given time. Subsequently, another user takes
off the clothes and then opens the door 4 to load the clothes into
the wash tub 2 and subsequently closes the door 4 and thereby the
atomizer 3 similarly operates. Accordingly, whenever clothes are
loaded into the wash tub 2, elimination and deodorization can be
automatically performed with respect to the clothes in the wash tab
2.
[0042] In an alternate embodiment, the washing machine 1 has a
weight sensor for detecting weight of laundry in the wash tub 2 in
addition to the door sensor 5. The weight sensor is connected to
the controller 1a, and its weight sensor signal is supplied to the
controller 1a. For example, the controller 1a judges that laundry
is in the wash tub 2 when the weight detected through the weight
sensor exceeds predetermined weight. The electrostatic atomizer 3
is configured to stand by in response to the elimination and
deodorization mode, and to perform elimination and deodorization
with respect to the laundry for a given time through the control of
the controller 1a. The elimination and deodorization is performed
when the door sensor 5 detects that the door 4 is opened and
subsequently closed and the weight detected through the weight
sensor exceeds predetermined weight. Thus, the sensors surely
detect that laundry is loaded into the wash tub 2, and then the
electrostatic atomizer 3 performs elimination and
deodorization.
[0043] Specifically, the door sensor 5 detects that the door 4 is
opened and subsequently closed, while the weight sensor detects
presence of laundry in the wash tub 2 by detecting weight of the
laundry. Accordingly, it is possible to surely judge that laundry
(clothes, etc.) is loaded into the wash tub 2. In this case, since
the electrostatic atomizer 3 performs elimination and deodorization
with respect to the laundry, useless operation by the electrostatic
atomizer 3 can be prevented.
[0044] In an embodiment, the motor 10 is configured to rotate the
wash tub 2, namely the rotation drum 9 when the electrostatic
atomizer 3 performs elimination and deodorization with respect to
laundry in the wash tub 2. The motor 10 may rotate the rotation
drum 9 in one direction, or may rotate the drum 9 in both
directions. In this case, since the laundry in the wash tub 2 is
rotated (tumbled), the mist can be sprayed all over the laundry.
Accordingly, the mist can stick all over the laundry (e.g., clothes
or the other articles).
[0045] In addition, since the fan 26 is worked during the
elimination and deodorization mode, mist of charged fine water
particles can be widely discharged into the wash tub 2 (rotation
drum 9). Therefore, the mist can stick all over the laundry (e.g.,
clothes or the other articles) in the rotation drum 9. Moreover,
since the mist is sent to the water tub 8 through the small holes
of the rotation drum 9, elimination and deodorization can be
performed with respect to the exterior surfaces of the rotation
drum 9 and the interior surfaces of the water tub 8. In an example,
the washing machine 1 has a heater (not shown) for heating the air
sent from the fan 26 to the discharge line 16. This heater is
controlled by the controller 1a. In this case, the mist is carried
by a warm current of air to be discharged into the rotation drum 9.
Herein, though a very small quantity of ozone can be generated when
mist of charged fine water particles is produced, decomposition of
the ozone can be accelerated by the warm current of air.
[0046] In an embodiment, the washing machine 1 (controller 1a) is
configured to sequentially perform (control) wash, rinse,
spin-drying, dry as well as elimination and deodorization in
response to a wash, elimination and deodorization mode (a combo
mode). Or the washing machine 1 (controller 1a) is configured to
sequentially perform (control) elimination and deodorization as
well as wash, rinse, spin-drying and dry in response to an
elimination, deodorization and wash mode (a combo mode). Each of
these washing machines 1 also performs elimination and
-deodorization independent of the corresponding combo mode in
response to the elimination and deodorization mode.
[0047] In an embodiment, the washing machine 1 has a wash mechanism
but does not have a dryer mechanism. This washing machine 1
(controller 1a) is configured to operate (control) the
electrostatic atomizer 3, the motor 10 and so on in response to at
least a wash mode and an elimination and deodorization mode. In
response to the wash mode, the washing machine 1 sequentially
performs a series of wash operations, namely wash, rinse and
spin-drying operations. In response to the elimination and
deodorization mode, the washing machine 1 performs elimination and
deodorization through the electrostatic atomizer 3 independent of
the series of wash operations.
Second Embodiment
[0048] FIGS. 3 and 4 show flow charts of a second embodiment of a
washing machine 1, in accordance with the present invention. This
washing machine 1 is formed in the same way as the first
embodiment, but operates in response to at least two modes
different from those of the first embodiment.
[0049] That is, as shown in FIG. 3, the washing machine 1
(controller 1a) is configured to perform (control) a series of wash
operations in response to a wash mode (program) "A1". The wash
operations to be sequentially performed include: a wash operation
for performing wash with respect to laundry in the wash tub 2; a
rinse operation for performing rinse with respect to the laundry; a
spin-drying operation for performing spin-drying with respect to
the laundry; a dry operation for drying the laundry; and an
elimination and deodorization operation for performing elimination
and deodorization with respect to the laundry. Each of the
operations is performed in the same way as the corresponding
operation in the first embodiment.
[0050] As shown in FIG. 4, the washing machine 1 (controller 1a)
also performs (controls) a series of wash operations in response to
a wash mode (program) "A2". The wash operations to be sequentially
performed include: a wash operation for performing wash with
respect to laundry in the wash tub 2; a rinse operation for
performing rinse with respect to the laundry; a spin-drying
operation for performing spin-drying with respect to the laundry;
and an elimination and deodorization operation for performing
elimination and deodorization with respect to the laundry. Each of
the operations is performed in the same way as the corresponding
operation in the first embodiment. In addition, each of the wash
modes "A1" and "A2" can be selected through a mode selection button
in a control panel (not shown) attached to the washing machine 1.
The washing machine 1 (controller 1a) automatically performs
(controls) a corresponding wash operations in response to a
selected mode.
[0051] The operations of the second embodiment are now explained.
After the door 4 is opened, laundry is loaded into the wash tub 2
(rotation drum 9) through the opening 13. When the wash mode "A1"
is selected after detergent is put in place and then the door 4 is
closed, water is automatically supplied to the wash tub 2 and then
the rotation drum 9 is rotated and thereby the wash operation is
performed (see FIG. 3). After the wash operation, the rinse
operation is performed. After the rinse operation, the water in the
wash tub 2 is drained and then the spin-drying operation is
performed. After the spin-drying operation, the dry operation is
performed. After the dry operation, the elimination and
deodorization operation is performed for a given time. When the
elimination and deodorization operation is over, the wash mode "A1"
is completed and the washing machine 1 stops the series of wash
operations.
[0052] On the other hand, when the wash mode "A2" is selected,
water is automatically supplied to the wash tub 2 and then the
rotation drum 9 is rotated and thereby the wash operation is
performed (see FIG. 4). After the wash operation, the rinse
operation is performed. After the rinse operation, the water in the
wash tub 2 is drained and then the spin-drying operation is
performed. After the spin-drying operation, the elimination and
deodorization operation is performed for a given time. When the
elimination and deodorization operation is over, the wash mode "A2"
is completed and the washing machine 1 stops the corresponding
series of wash operations.
[0053] In each of the wash modes "A1" and "A2", the electrostatic
atomizer 3 is activated at the final operation in a corresponding
series of wash operations and then performs elimination and
deodorization with respect to washed laundry.
[0054] That is, when the electrostatic atomizer 3 is activated at a
final operation, mist of charged fine water particles is produced
to be discharged into the wash tub 2 (rotation drum 9). The mist is
widely scattered in the rotation drum 9 and then sticks to washed
laundry. Since the charged fine water particles constituting the
mist are (free) radicals, elimination and deodorization are
performed with respect to the laundry. The mist is especially fine
particles each of which is in the order of nanometer in size, and
accordingly can be widely scattered in the wash tub 2 and
infiltrate deep into the laundry (e.g., the inside of fiber).
Consequently, elimination and deodorization are effectively
performed.
[0055] In an embodiment, the motor 10 is configured to rotate the
wash tub 2, namely the rotation drum 9 when the electrostatic
atomizer 3 performs elimination and deodorization with respect to
laundry in the wash tub 2. The motor 10 may rotate the rotation
drum 9 in one direction, or may rotate the drum 9 in both
directions. In this case, since washed laundry is rotated
(tumbled), the mist can be sprayed all over the washed laundry.
Accordingly, the mist can stick all over the laundry.
[0056] In addition, since the fan 26 is worked during an
elimination and deodorization operation, mist of charged fine water
particles can be widely discharged into the wash tub 2 (rotation
drum 9). Therefore, the mist can stick all over the washed laundry
(e.g., clothes or the other articles). Moreover, since the mist is
sent to the water tub 8 through the small holes of the rotation
drum 9, elimination and deodorization can be performed with respect
to the exterior surfaces of the rotation drum 9 and the interior
surfaces of the water tub 8. In an example, the washing machine 1
has a heater (not shown) for heating the air sent from the fan 26
to the discharge line 16. In this case, the mist is carried by a
warm current of air to be discharged into the rotation drum 9.
Herein, though a very small quantity of ozone can be generated when
mist of charged fine water particles is produced, decomposition of
the ozone can be accelerated by the warm current of air. In this
case, owing to a very small quantity of ozone, the quantity of air
flow may be little, and the warm current of air may also be
comparatively low temperature.
[0057] In an embodiment, as shown in FIG. 5, the washing machine 1
(controller 1a) is configured to perform (control) a series of wash
operations in response to a wash mode "A3" in addition to the wash
modes "A1" and "A2". The wash operations to be sequentially
performed include: a wash operation for performing wash with
respect to laundry in the wash tub 2; a rinse operation for
performing rinse with respect to the laundry; a spin-drying
operation for performing spin-drying with respect to the laundry;
an elimination and deodorization operation for performing
elimination and deodorization with respect to the laundry; a dry
operation for drying the laundry; and another elimination and
deodorization operation for performing elimination and
deodorization with respect to the laundry. In this case, since
elimination and deodorization is performed before and after the dry
operation, elimination and deodorization can be more reliably
performed. In an example, the washing machine 1 (controller 1a) may
be configured to operate (control) in response to a wash mode
including wash, rinse, spin-drying and dry operations and another
wash mode including wash, rinse and spin-drying operations in
addition to the wash modes "A1"-"A3".
[0058] In an embodiment, the washing machine 1 has a wash mechanism
but does not have a dryer mechanism. This washing machine 1
(controller 1a) is configured to sequentially perform (control): a
wash operation for performing wash with respect to laundry in the
wash tub 2; a rinse operation for performing rinse with respect to
the laundry; a spin-drying operation for performing spin-drying
with respect to the laundry; and an elimination and deodorization
operation for performing elimination and deodorization with respect
to the laundry. Each of the operations is performed in the same way
as the corresponding operation in the first embodiment.
Third Embodiment
[0059] FIGS. 6 and 7 show flow charts of a third embodiment of a
washing machine 1, in accordance with the present invention. This
washing machine 1 is formed in the same way as the first
embodiment, but operates in response to at least two modes
different from those of the first embodiment.
[0060] That is, as shown in FIG. 6, the washing machine 1
(controller 1a) is configured to perform (control) a series of wash
operations in response to a wash mode (program) "B1". The wash
operations to be sequentially performed include: an elimination and
deodorization operation for performing elimination and
deodorization with respect to laundry in the wash tub 2; a wash
operation for performing wash with respect to the laundry; a rinse
operation for performing rinse with respect to the laundry; a
spin-drying operation for performing spin-drying with respect to
the laundry; and a dry operation for drying the laundry. Each of
the operations is performed in the same way as the corresponding
operation in the first embodiment.
[0061] As shown in FIG. 7, the washing machine 1 (controller 1a) is
configured to perform (control) a series of wash operations in
response to a wash mode "B2". The wash operations to be
sequentially performed include: an elimination and deodorization
operation for performing elimination and deodorization with respect
to laundry in the wash tub 2; a wash operation for performing wash
with respect to the laundry; a rinse operation for performing rinse
with respect to the laundry; and a spin-drying operation for
performing spin-drying with respect to the laundry. Each of the
operations is performed in the same way as the corresponding
operation in the first embodiment. In addition, each of the wash
modes "B1" and "B2" can be selected through a mode selection button
in a control panel (not shown) attached to the washing machine 1.
The washing machine 1 (controller 1a) automatically performs
(controls) a corresponding wash operations in response to a
selected mode.
[0062] The operations of the third embodiment are now explained.
After the door 4 is opened, laundry is loaded into the wash tub 2
(rotation drum 9) through the opening 13. When the wash mode "B1"
is selected after detergent is put in place and then the door 4 is
closed, the elimination and deodorization operation is performed by
the electrostatic atomizer 3 (see FIG. 6). In this case, mist of
charged fine water particles is produced and then discharged into
the rotation drum 9. The elimination and deodorization operation is
performed for a given time. After the elimination and deodorization
operation, water is automatically supplied to the wash tub 2 and
then the rotation drum 9 is rotated and thereby the wash operation
is performed. After the wash operation, the rinse operation is
performed. After the rinse operation, the water in the wash tub 2
is drained and then the spin-drying operation is performed. After
the spin-drying operation, the dry operation is performed. When the
dry operation is over, the wash mode "B1" is completed and the
washing machine 1 stops the series of wash operations.
[0063] On the other hand, when the wash mode "B2" is selected, the
electrostatic atomizer 3 is activated and then produces mist of
charged fine water particles to discharge the mist into the
rotation drum 9. This elimination and deodorization operation is
performed for a given time. After the elimination and deodorization
operation, water is automatically supplied to the wash tub 2 and
then the rotation drum 9 is rotated and thereby the wash operation
is performed. After the wash operation, the rinse operation is
performed. After the rinse operation, the water in the wash tub 2
is drained and then the spin-drying operation is performed. When
the spin-drying operation is over, the wash mode "B2" is completed
and the washing machine 1 stops the corresponding series of wash
operations.
[0064] In each of the wash modes "B1" and "B2", the electrostatic
atomizer 3 is activated at the first operation in a corresponding
series of wash operations and then performs elimination and
deodorization with respect to laundry in the wash tub 2 (rotation
drum 9). Also, allergen substances sticking to the laundry are
inactivated and removed.
[0065] That is, when the electrostatic atomizer 3 is activated at a
first operation, mist of charged fine water particles is produced
to be discharged into the wash tub 2 (rotation drum 9). The mist is
widely scattered in the rotation drum 9 and then sticks to unwashed
laundry in the drum 9. Since the charged fine water particles
constituting the mist are (free) radicals, elimination and
deodorization can be performed with respect to the laundry before
wash. The mist is especially fine particles each of which is in the
order of nanometer in size, and accordingly can be widely scattered
in the wash tub 2 and infiltrate deep into the laundry (e.g., the
inside of fiber). Consequently, elimination and deodorization are
effectively performed. Also, allergen substances sticking to the
laundry can be inactivated and removed.
[0066] In an embodiment, the motor 10 is configured to rotate the
wash tub 2, namely the rotation drum 9 when the electrostatic
atomizer 3 performs elimination and deodorization with respect to
laundry in the wash tub 2 in each first operation of the modes "B1"
and "B2". The motor 10 may rotate the rotation drum 9 in one
direction, or may rotate the drum 9 in both directions. In this
case, since the laundry in the wash tub 2 is rotated (tumbled), the
mist can be sprayed all over the laundry before wash. Accordingly,
the mist can stick all over the laundry.
[0067] In addition, since the fan 26 is worked during in each first
operation of the modes "B1" and "B2", namely each elimination and
deodorization operation, mist of charged fine water particles can
be widely discharged into the wash tub 2 (rotation drum 9).
Therefore, the mist can be stuck all over the laundry (e.g.,
clothes or the other articles). Moreover, since the mist is sent to
the water tub 8 through the small holes of the rotation drum 9,
elimination and deodorization can be performed with respect to the
exterior surfaces of the rotation drum 9 and the interior surfaces
of the water tub 8. In an example, the washing machine 1 has a
heater (not shown) for heating the air sent from the fan 26 to the
discharge line 16. In this case, the mist is carried by a warm
current of air to be discharged into the rotation drum 9. Herein,
though a very small quantity of ozone can be generated when mist of
charged fine water particles is produced, decomposition of the
ozone can be accelerated by the warm current of air. In this case,
owing to a very small quantity of ozone, the quantity of air flow
may be little, and the warm current of air may also be
comparatively low temperature.
[0068] In an embodiment, the washing machine 1 (controller 1a) is
configured to operate (control) in response to a wash mode
including wash, rinse, spin-drying and dry operations and another
wash mode including wash, rinse and spin-drying operations in
addition to the wash modes "B1" and "B2".
[0069] In an embodiment, the washing machine 1 has a wash mechanism
but does not have a dryer mechanism. This washing machine 1
(controller 1a) is configured to sequentially perform (control): an
elimination and deodorization operation for performing elimination
and deodorization with respect to laundry in the wash tub 2; a wash
operation for performing wash with respect to the laundry; a rinse
operation for performing rinse with respect to the laundry; and a
spin-drying operation for performing spin drying with respect to
the laundry. Each of the operations is performed in the same way as
the corresponding operation in the first embodiment.
[0070] Although the present invention has been described with
reference to certain preferred embodiments, numerous modifications
and variations can be made by those skilled in the art without
departing from the true spirit and scope of this invention.
* * * * *