U.S. patent application number 12/458457 was filed with the patent office on 2010-01-28 for detergent dissolving device and washing machine having the same.
This patent application is currently assigned to SAMSUNG ELECTRONICS CO., LTD.. Invention is credited to Hwang Mook Cho, Tai Eun Kim, Bo Kyung Lee, Seong Min Oak, Jae Ryong Park, Sang Yeon Pyo, Dong Pil Seo, Sang deok Sim, Byoung Yull Yang, So Jung Yu.
Application Number | 20100018258 12/458457 |
Document ID | / |
Family ID | 41567415 |
Filed Date | 2010-01-28 |
United States Patent
Application |
20100018258 |
Kind Code |
A1 |
Cho; Hwang Mook ; et
al. |
January 28, 2010 |
Detergent dissolving device and washing machine having the same
Abstract
Disclosed are a detergent dissolving device for a washing
machine capable of improving solubility of detergent, and a washing
machine having the same. The detergent dissolving device includes a
powdered detergent box, and the powdered detergent box includes a
detergent receiving portion, and a water feed portion defined at a
periphery of the detergent receiving portion to feed water into the
detergent receiving portion so as to cause rotating motion of water
received in the detergent receiving portion. The detergent
dissolving device further includes a cover provided to open or
close the detergent receiving portion. The cover includes a water
discharge portion to discharge the water out of the detergent
receiving portion.
Inventors: |
Cho; Hwang Mook; (Suwon-si,
KR) ; Pyo; Sang Yeon; (Suwon-si, KR) ; Park;
Jae Ryong; (Hwaseong-si, KR) ; Sim; Sang deok;
(Cheopgsong-gun, KR) ; Yang; Byoung Yull;
(Hwaseong-si, KR) ; Oak; Seong Min; (Hwaseong-si,
KR) ; Kim; Tai Eun; (Suwon-si, KR) ; Seo; Dong
Pil; (Suwon-si, KR) ; Yu; So Jung; (Suwon-si,
KR) ; Lee; Bo Kyung; (Suwon-si, KR) |
Correspondence
Address: |
STAAS & HALSEY LLP
SUITE 700, 1201 NEW YORK AVENUE, N.W.
WASHINGTON
DC
20005
US
|
Assignee: |
SAMSUNG ELECTRONICS CO.,
LTD.
Suwon-si
KR
|
Family ID: |
41567415 |
Appl. No.: |
12/458457 |
Filed: |
July 13, 2009 |
Current U.S.
Class: |
68/17R |
Current CPC
Class: |
D06F 39/02 20130101;
D06F 39/088 20130101 |
Class at
Publication: |
68/17.R |
International
Class: |
D06F 39/02 20060101
D06F039/02 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 24, 2008 |
KR |
10-2008-72394 |
Claims
1. A detergent dissolving device for a washing machine, the
detergent dissolving device comprising: a powdered detergent box
including a detergent receiving portion, and a water feed portion
defined at a periphery of the detergent receiving portion, to feed
water into the detergent receiving portion, to cause rotating
motion of water received in the detergent receiving portion; and a
cover to open or close the detergent receiving portion and
including a water discharge portion to discharge the water out of
the detergent receiving portion.
2. The device according to claim 1, further comprising a sealing
member to seal a gap between the detergent receiving portion and
the cover upon closure of the cover.
3. The device according to claim 1, wherein the water feed portion
includes a water feed hole and a water feed channel disposed in a
tangential direction of the detergent receiving portion.
4. The device according to claim 1, wherein the detergent receiving
portion defines a receiving space having a circular horizontal
cross section.
5. The device according to claim 1, wherein the detergent receiving
portion defines a receiving space having a semispherical,
cylindrical, truncated-conical or bowl shape.
6. The device according to claim 1, wherein the detergent receiving
portion includes an auxiliary water discharge hole, and a first
mesh provided at the auxiliary water discharge hole to prevent
passage of powdered detergent while allowing passage of water.
7. The device according to claim 1, wherein the water discharge
portion includes a water discharge hole formed at a center of the
cover, corresponding to the detergent receiving portion.
8. The device according to claim 7, wherein the water discharge
portion further includes a water discharge channel extending from
the center of the cover.
9. The device according to claim 8, wherein the water discharge
hole is located at an inwardly inserted position of the detergent
receiving portion, and the water discharge channel extends from the
water discharge hole to the cover.
10. The device according to claim 8, wherein the water discharge
portion further includes a second mesh provided at the water
discharge hole or the water discharge channel to prevent passage of
powdered detergent while allowing passage of the water.
11. The device according to claim 1, wherein the cover further
includes a perforated hole to direct the water discharged from the
water discharge portion into a water tub of the washing
machine.
12. A detergent dissolving device for a washing machine, the
detergent dissolving device comprising: a detergent receiving
portion in which detergent is received; a water feed portion to
feed water into the detergent receiving portion to create a
rotating water stream within the detergent receiving portion; and a
water discharge portion to discharge the water upward from a center
of the rotating water stream.
13. The device according to claim 12, wherein the water feed
portion is formed at an inner surface of the detergent receiving
portion, and includes a water feed hole disposed in a tangential
direction of a horizontal cross section of the detergent receiving
portion.
14. The device according to claim 12, wherein the detergent
receiving portion defines a receiving space having a circular
horizontal cross section and having a semispherical, cylindrical,
truncated-conical or bowl shape.
15. The device according to claim 12, wherein the detergent
receiving portion includes an auxiliary water discharge hole, and a
first mesh provided at the auxiliary water discharge hole to
prevent passage of powdered detergent while allowing passage of the
water.
16. The device according to claim 12, wherein the water discharge
portion includes a water discharge hole provided on a center axis
of the detergent receiving portion.
17. The device according to claim 16, wherein the water discharge
portion further includes a water discharge channel extending along
the center axis of the detergent receiving portion.
18. A washing machine comprising: a body; a water tub provided in
the body; a water feeder to feed water into the water tub; and a
detergent dissolving device in which detergent is received, the
detergent dissolving device to dissolve the detergent in the water
fed from the water feeder prior to feeding the detergent into the
water tub, wherein the detergent dissolving device includes a
detergent receiving portion, a water feed hole formed at the
detergent receiving portion to cause rotating motion of the water
fed into the detergent receiving portion, and a water discharge
portion formed on the center axis of rotating water stream.
19. The washing machine according to claim 18, wherein the water
feed hole is provided in a tangential direction of the detergent
receiving portion, to cause the water fed into the detergent
receiving portion to perform rotating motion in a predetermined
direction.
20. The washing machine according to claim 18, wherein the
detergent dissolving device further includes a cover to open or
close the detergent receiving portion, and wherein the water
discharge portion includes a water discharge hole formed on a
center axis of the cover opposite the detergent receiving portion,
and a water discharge channel extending on the center axis of the
cover.
21. The washing machine according to claim 18, further comprising a
sealing member to prevent leakage of water, is the sealing member
being at a connection between the water feeder and the detergent
dissolving device.
22. The washing machine according to claim 20, wherein the body
includes a receptacle defining a receiving space into which the
detergent dissolving device is slidably mounted, and wherein the
cover and detergent receiving portion are pressed by upper and
lower surfaces of the receptacle to maintain a sealed state.
23. A detergent dissolving device for a washing machine, the
detergent dissolving device comprising: a detergent receiving
portion; and a water feed portion at a periphery of the detergent
receiving portion, to feed water into the detergent receiving
portion, to cause rotating motion of water received in the
detergent receiving portion.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of Korean Patent
Application No. 2008-0072394, filed on Jul. 24, 2008 in the Korean
Intellectual Property Office, the disclosure of which is
incorporated herein by reference.
BACKGROUND
[0002] 1. Field
[0003] The present invention relates to a detergent dissolving
device for a washing machine and a washing machine having the same,
and, more particularly, to a detergent dissolving device for a
washing machine, which can effectively dissolve powdered detergent
received in a detergent box, and a washing machine having the
same.
[0004] 2. Description of the Related Art
[0005] Generally, a washing machine is an appliance wherein
laundry, wash water, and detergent are input into a rotating tub
and are agitated together, achieving washing of laundry via
friction. Such a washing machine includes a detergent feeder to
feed detergent into a water tub.
[0006] A detergent feeder included in a conventional washing
machine includes a hollow housing fixedly mounted in an upper
portion of a body case, a drawer type detergent box to be drawn
from the housing forward of the body case, and a detergent
receiving portion defined in the detergent box and filled with
detergent. If a user fills the detergent box with detergent and
operates the washing machine, the detergent is moved into a water
tub along with wash water directed into the detergent receiving
portion.
[0007] A problem of the above-described conventional detergent
feeder is that powdered detergent received in the detergent
receiving portion is often fed into the water tub in an
incompletely dissolved state. The incompletely dissolved powdered
detergent may settle at the bottom of the water tub, causing
detergent residue. In addition, as the powdered detergent is fed to
laundry, it may be stuck on the laundry and remain on the laundry
even after completion of a laundry washing operation.
[0008] Another problem is that some of the powdered detergent,
input into the detergent receiving portion of the detergent box,
remains in the detergent box even after completion of a laundry
washing operation. In particular, when a water source feeds water
at a low water pressure, the water may insufficiently remove the
powdered detergent from the detergent receiving portion, increasing
the amount of detergent residue.
[0009] The detergent residue may be introduced into the water tub
along with water during a rinsing operation after the laundry
washing operation, deteriorating rinsing performance, or may be
hardened in the detergent box, causing contamination of the
interior of the detergent box.
SUMMARY
[0010] Therefore, it is an aspect of the present invention to
provide a detergent dissolving device for a washing machine capable
of improving solubility of detergent, and a washing machine having
the same.
[0011] It is another aspect of the present invention to provide a
detergent dissolving device for a washing machine capable of
preventing powdered detergent from remaining in a detergent box
after wash water is completely fed, and a washing machine having
the same.
[0012] Additional aspects and/or advantages will be set forth in
part in the description which follows and, in part, will be
apparent from the description, or may be learned by practice of the
invention.
[0013] The foregoing and/or other aspects of the present invention
may be achieved by providing a detergent dissolving device for a
washing machine, the detergent dissolving device including: a
powdered detergent box including a detergent receiving portion, and
a water feed portion defined at a periphery of the detergent
receiving portion to feed water into the detergent receiving
portion, to cause rotating motion of water received in the
detergent receiving portion; and a cover to open or close the
detergent receiving portion and including a water discharge portion
to discharge the water out of the detergent receiving portion.
[0014] The detergent dissolving device may further include a
sealing member to seal a gap between the detergent receiving
portion and the cover upon closure of the cover.
[0015] The water feed portion may include a water feed hole and a
water feed channel disposed in a tangential direction of the
detergent receiving portion.
[0016] The detergent receiving portion may define a receiving space
having a circular horizontal cross section and a semispherical,
cylindrical, truncated-conical or bowl shape.
[0017] The detergent receiving portion may include an auxiliary
water discharge hole, and a first mesh provided at the auxiliary
water discharge hole to prevent passage of powdered detergent while
allowing passage of water.
[0018] The water discharge portion may include a water discharge
hole formed at a center of the cover, corresponding to the
detergent receiving portion, and a water discharge channel
extending from the center of the cover.
[0019] The water discharge hole may be located at an inwardly
inserted position of the detergent receiving portion, and the water
discharge channel may extend from the water discharge hole to the
cover.
[0020] The water discharge portion may further include a second
mesh provided at the water discharge hole or the water discharge
channel to prevent passage of powdered detergent while allowing
passage of the water.
[0021] The cover may further include a perforated hole to direct
the water discharged from the water discharge portion into a water
tub of the washing machine.
[0022] The foregoing and/or other aspects of the present invention
may be achieved by providing a detergent dissolving device for a
washing machine, the detergent dissolving device including: a
detergent receiving portion in which detergent is received; a water
feed portion to feed water into the detergent receiving portion to
create a rotating water stream within the detergent receiving
portion; and a water discharge portion to discharge the water
upward from a center of the rotating water stream.
[0023] The water feed portion may be formed at an inner surface of
the detergent receiving portion, and includes a water feed hole
disposed in a tangential direction of a horizontal cross section of
the detergent receiving portion.
[0024] The detergent receiving portion may define a receiving space
having a circular horizontal cross section and having a
semispherical, cylindrical, truncated-conical or bowl shape.
[0025] The detergent receiving portion may include an auxiliary
water discharge hole, and a first mesh provided at the auxiliary
water discharge hole to prevent passage of powdered detergent while
allowing passage of the water.
[0026] The water discharge portion may include a water discharge
hole provided on a center axis of the detergent receiving portion,
and a water discharge channel extending along the center axis of
the detergent receiving portion.
[0027] The foregoing and/or other aspects of the present invention
are achieved by providing a washing machine including a body, a
water tub provided in the body, a water feeder to feed water into
the water tub, and a detergent dissolving device in which detergent
is received, the detergent dissolving device to dissolve the
detergent in the water fed from the water feeder prior to feeding
the detergent into the water tub, wherein the detergent dissolving
device includes a detergent receiving portion, a water feed hole
formed at the detergent receiving portion to cause rotating motion
of the water fed into the detergent receiving portion, and a water
discharge portion formed on the center axis of rotating water
stream.
[0028] The water feed hole may be provided in a tangential
direction of the detergent receiving portion, to cause the water
fed into the detergent receiving portion to perform a rotating
motion in a predetermined direction.
[0029] The detergent dissolving device may further include a cover
to open or close the detergent receiving portion, and the water
discharge portion may include a water discharge hole formed on a
center axis of the cover opposite the detergent receiving portion,
and a water discharge channel extending on the center axis of the
cover.
[0030] A sealing member to prevent leakage of water, the sealing
member being at a connection between the water feeder and the
detergent dissolving device.
[0031] The body may include a receptacle defining a receiving space
into which the detergent dissolving device is slidably mounted, and
the cover and detergent receiving portion may be pressed by upper
and lower surfaces of the receptacle to maintain a sealed
state.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] These and/or other aspects and advantages will become
apparent and more readily appreciated from the following
description of the embodiments, taken in conjunction with the
accompanying drawings of which:
[0033] FIG. 1 is a schematic perspective view showing the
configuration of a washing machine according to an exemplary
embodiment of the present invention;
[0034] FIG. 2 is a perspective view showing a water feeder and a
detergent feeder according to the exemplary embodiment of the
present invention;
[0035] FIG. 3 is an enlarged perspective view showing the
configuration of the detergent feeder according to the exemplary
embodiment of the present invention;
[0036] FIGS. 4A-4C are views showing alternative embodiments of a
detergent receiving portion of a detergent dissolving device
according to the exemplary embodiment of the present invention;
[0037] FIG. 5 is a plan sectional view of the detergent feeder
according to the exemplary embodiment of the present invention;
[0038] FIG. 6 is a view showing an input operation of powdered
detergent in the washing machine according to the exemplary
embodiment of the present invention; and
[0039] FIGS. 7 and 8 are views showing an operation of the
detergent dissolving device in the washing machine according to the
exemplary embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT
[0040] Reference will now be made in detail to the exemplary
embodiment, an example of which is illustrated in the accompanying
drawings, wherein like reference numerals refer to like elements
throughout. The embodiment is described below to explain the
present invention by referring to the figures.
[0041] Although the exemplary embodiment is applicable to various
kinds of washing machines, such as pulsator, agitator and drum
washing machines, for convenience of description, a pulsator
washing machine will be described hereinafter as an example.
[0042] FIG. 1 is a schematic perspective view showing the
configuration of a washing machine according to the exemplary
embodiment of the present invention.
[0043] The washing machine of the exemplary embodiment, as shown in
FIG. 1, includes a body 10 defining an external appearance of the
washing machine, a water tub 20 installed in the body 10, in which
wash water is received, a rotating tub 11 rotatably installed in
the water tub 20, a water feeder 30 to feed wash water into the
body 10, and a detergent feeder 40 in which detergent is received,
the detergent feeder 40 functioning to mix detergent with wash
water fed from the water feeder 30 to provide a mixture of water
and detergent into the water tub 20.
[0044] The body 10 is provided at a top thereof with an opening 12
for introduction/discharge of laundry, and a top cover 13 is
installed to open or close the opening 12. An operating panel 14 is
provided at a front upper portion of the body 10. The operating
panel 14 includes a plurality of operating buttons to allow a user
to control operation of the washing machine, and a display to
display an operating condition of the washing machine.
[0045] The water tub 20, in which wash water is received, is
installed in the body 10 and in turn, the rotating tub 11 is
rotatably installed in the water tub 20. The rotating tub 11
contains a pulsator 16 mounted at the bottom thereof to create a
water stream. A drive device (not shown) to rotate the rotating tub
11 and pulsator 16 and a drain device 15 to drain the used wash
water are provided below the water tub 20 inside the body 10.
[0046] In operation of the above-described washing machine, after
laundry is put into the rotating tub 11 and the water tub 20 is
filled with wash water containing detergent, the pulsator 16 is
repeatedly rotated forwardly and reversely under operation of the
drive device (not shown), performing a laundry washing
operation.
[0047] A laundry rinsing operation is followed by the laundry
washing operation. The laundry rinsing operation is performed, in
the same pulsator operation as the above-described washing
operation, via repetitive feed and drain of water. After the drain
device 15 finally drains water from the water tub 20 after
completion of the rinsing operation, a laundry dehydrating
operation using high-speed rotation of the rotating tub 11 is
performed.
[0048] FIG. 2 is a perspective view of the water feeder and
detergent feeder according to the exemplary embodiment of the
present invention, FIG. 3 is an enlarged perspective view showing
the configuration of the detergent feeder according to the
exemplary embodiment of the present invention, FIG. 4 is a view
showing alternative embodiments of a detergent receiving portion of
a detergent dissolving device according to the exemplary embodiment
of the present invention, and FIG. 5 is a plan sectional view of
the detergent feeder according to the exemplary embodiment of the
present invention.
[0049] The water feeder 30, as shown in FIG. 2, is installed in a
rear upper portion of the body 10. The water feeder 30 includes
first water feed pipes 31 and 32 extending from water sources,
water feed valves 33 and 34 connected to the first water feed pipes
31 and 32 to intermittently open or close the first water feed
pipes 31 and 32, and a plurality of second water feed pipes 35 and
36 connected between the water feed valves 33 and 34 and a
detergent feeder receptacle 37.
[0050] The first water feed pipes 31 and 32 include a hot water
feed pipe 31 connected to an external hot water source, and a cold
water feed pipe 32 connected to an external cold water source.
[0051] The water feed valves 33 and 34 include a hot water feed
valve 33 connected to the hot water feed pipe 31, and a cold water
feed valve 34 connected to the cold water feed pipe 32. The cold
water feed valve 34 is provided with two outlet ports 34a and 34b,
to selectively feed cold water through any one of the two outlet
ports 34a and 34b via a valve path switching operation.
[0052] The detergent feeder 40 includes a liquid detergent
container 50 in which liquid detergent is received, and a detergent
dissolving device 100 in which powdered detergent is received. The
liquid detergent container 50 is adapted to directly feed the
liquid detergent into the water tub 20, and the detergent
dissolving device 100 performs a dissolving operation of the
powdered detergent prior to feeding the powdered detergent into the
water tub 20. Both the liquid detergent container 50 and detergent
dissolving device 100 are connected with a grip panel 60.
[0053] The body 10 of the washing machine is defined with the
detergent feeder receptacle 37, which provides a space for
installation of the detergent feeder 40. The detergent feeder
receptacle 37 is configured to receive the liquid detergent
container 50 and detergent dissolving device 100 of the detergent
feeder 40.
[0054] The detergent feeder receptacle 37 is provided with a
plurality of inlet ports 38 and 39, to feed water into the liquid
detergent container 50 and detergent dissolving device 100. The
plurality of second water feed pipes 35 and 36 is connected between
the respective outlet ports 33a, 34a and 34b of the water feed
valves 33 and 34 and the respective inlet ports 38 and 39 of the
detergent feeder receptacle 37.
[0055] Of the plurality of second water feed pipes 35 and 36, the
second water feed pipe 35, which is used to feed water into the
detergent dissolving device 100, has a Y-shape. Branched end
portions of the Y-shaped second water feed pipe 35 are connected to
the outlet port 33a of the hot water feed valve 33 and the outlet
port 34a of the cold water feed valve 34, respectively, and the
other end portion of the second water feed pipe 35 is connected to
the inlet port 38 provided at the rear side of the detergent feeder
receptacle 37.
[0056] The inlet port 38 for the detergent dissolving device 100,
provided at the rear side of the detergent feeder receptacle 37, is
configured to protrude inward to the detergent feeder receptacle 37
and thus, is connected, upon coupling of the detergent dissolving
device 100, to a water feed channel 222 that will be described
hereinafter. The protruding inlet port 38 is provided, around the
periphery thereof, with a first sealing member 38b to prevent
leakage of water through a gap between the inlet port 38 and the
water feed channel 222. Further, the inlet port 38 is provided with
an anti-separation protrusion 38a to prevent the first sealing
member 38b from being separated from the inlet port 38 upon
coupling/separation of the detergent feeder 40 (See FIG. 6).
[0057] The liquid detergent container 50 has an approximately
rectangular box form having an open top and receives liquid
detergent therein. The liquid detergent, received in the liquid
detergent container 50, is mixed with water, fed through the inlet
port 39 for the liquid detergent container 50 provided at the top
of the detergent feeder receptacle 37, thereby being fed into the
water tub 20.
[0058] The detergent dissolving device 100 includes a rectangular
powdered detergent box 200 defining a detergent receiving portion
210 in which powdered detergent is received, and a cover 300 to
open or close the detergent receiving portion 210, the cover 300
being provided with a water discharge portion 310.
[0059] The powdered detergent box 200, as shown in FIG. 3, includes
a rectangular box-shaped casing 201 having an open top and bottom,
the detergent receiving portion 210 being defined in the casing 201
to receive powdered detergent therein, a water feed portion 220 to
feed water in an appropriate flow direction to cause water,
introduced into the detergent receiving portion 210, to perform
rotating motion within the detergent receiving portion 210, and a
flat plane-shaped connecting portion 230 between the top of the
detergent receiving portion 210 and an inner surface of the casing
201. The connecting portion 230 is vertically perforated with a
plurality of first holes 231.
[0060] Although the present embodiment describes a configuration
wherein the detergent receiving portion 210 is supported in the
powdered detergent box 200 via the flat plane-shaped connecting
portion 230, other configurations to support the detergent
receiving portion 210 within the powdered detergent box 200 may be
used instead of the flat plane-shaped connecting portion 230, or
the detergent receiving portion 210 may come into direct contact,
at an upper edge thereof, with the inner surface of the casing 201
of the powdered detergent box 200 to thereby be supported by the
casing 201 without a separate connecting portion. In the latter
direct-contact configuration, although no perforated holes are
provided, a clearance is formed between the inner surface of the
casing 201 of the rectangular powdered detergent box 200 and the
detergent receiving portion 210 having a circular horizontal cross
section, allowing wash water, having passed through the detergent
receiving portion 210 and cover 300, to be moved into the water tub
20.
[0061] The detergent receiving portion 210 defines a detergent
receiving space, and may have an approximately circular cross
section to assure effective centrifugal rotating motion of water.
Of course, other polygonal horizontal cross sections rather than
the circular horizontal cross section may be contemplated. In
addition, the detergent receiving portion 210 may have a
bowl-shape. Alternatively, as shown in FIG. 4, the detergent
receiving portion 210 may have various shapes, such as for example,
a truncated conical shape (FIG. 4A), cylindrical shape (FIG. 4B),
and a semi-spherical shape (FIG. 4C).
[0062] The detergent receiving portion 210 is provided, at the
bottom thereof, with an auxiliary water discharge hole 211, and a
first mesh 212 is provided at the auxiliary water discharge hole
211 to prevent passage of powdered detergent while allowing passage
of water.
[0063] The first mesh 212 has a smaller lattice size than a
particle size of powdered detergent. Accordingly, in the case where
powdered detergent is input into the detergent receiving portion
210, there is no risk that the powdered detergent leaks through the
auxiliary water discharge hole 211. In the case where no powdered
detergent remains in the detergent receiving portion 210, water
introduced into the detergent receiving portion 210 is directly
guided into the water tub 20 through the auxiliary water discharge
hole 211, assuring effective feed of water into the water tub
20.
[0064] The water feed portion 220, as shown in FIGS. 3 and 5,
includes a water feed hole 221 provided at a peripheral position of
the water receiving portion 210, and the water feed channel 222
disposed in a tangential direction of the detergent receiving
portion 210 to eject water, introduced from the second water feed
pipe 35, in the tangential direction of the detergent receiving
portion 210 through the water feed hole 221.
[0065] The water feed hole 221, provided at the peripheral position
of the water receiving portion 210, may be opened in a tangential
direction with respect to the horizontal cross section of the
detergent receiving portion 210.
[0066] The water feed channel 222 is connected to the second water
feed pipe 35 and serves to guide water, introduced from the second
water feed pipe 35, into the detergent receiving portion 210. The
water feed channel 222 is located below the connecting portion 230
between a rear surface of the casing 201 and the detergent
receiving portion 210.
[0067] The water feed channel 222 adjusts a flow direction of a
water stream to be introduced into the detergent receiving portion
210 using only water pressure provided by a water source without a
separate power source, so as to enable unidirectional rotating
motion of the water stream within the detergent receiving portion
210.
[0068] To facilitate effective rotating motion of the water stream
within the detergent receiving portion 210, the water feed channel
222 is formed as a straight channel defined in the tangential
direction of the detergent receiving portion 210 having the
circular horizontal cross section. With this configuration, wash
water introduced through the water feed channel 222 creates an eddy
along an inner periphery of the detergent receiving portion 210,
resulting in rotating motion of the water stream.
[0069] The cover 300 is hingedly coupled to a rear end of the
powdered detergent box 200, to open or close the detergent
receiving portion 210 via pivotal rotation thereof. When the drawer
type detergent dissolving device 100 is inserted into and mounted
in the detergent feeder receptacle 37, the cover 300 is pivotally
rotated downward, thereby closing the detergent receiving portion
210. Then, when the detergent feeder 40 is separated from the
detergent feeder receptacle 37, the cover 300 is pivotally rotated
upward, thereby opening the water receiving portion 210.
[0070] For this, the cover 300 is provided at both ends of one side
thereof with hinges 340, and the powdered detergent box 200 is
provided at opposite lateral sides thereof with hinge recesses 202
to correspond to the respective hinges 340. Accordingly, as the
hinges 340 of the cover 300 are inserted into the hinge recesses
202 of the powdered detergent box 200, the cover 300 is pivotally
rotatably coupled to the powdered detergent box 200. Although the
present embodiment describes that the cover has hinges and the
powdered detergent box has hinge recesses, it will be appreciated
that the powdered detergent box may have hinges and the cover may
have hinge recesses.
[0071] Each of the hinges 340 is provided with an elastic member
350 in the form of a torsion spring. The elastic member 350 is
inserted around the hinge 340 in such a manner that one end of the
elastic member 350 is supported by the powdered detergent box 200
and the other end is supported by the cover 300. In this way, the
elastic member 350 acts to press the cover 300 so as to open the
detergent receiving portion 210.
[0072] With the above-described configuration, when the detergent
dissolving device 100 is inserted into the detergent feeder
receptacle 37, insertion of the detergent dissolving device 100 is
guided by the detergent feeder receptacle 37 such that the elastic
member 350 is elastically deformed, causing the cover 300 to be
pivotally rotated downward so as to close the detergent receiving
portion 210.
[0073] When the detergent dissolving device 100 is separated from
the detergent feeder receptacle 37, the elastic member 350 is
elastically restored, causing the cover 300 to be pivotally rotated
upward so as to open the detergent receiving portion 210.
[0074] In addition to the above-described manner, any other methods
to close the detergent receiving portion 210 using the cover 300
are possible. For example, fasteners, such as hooks, etc., may be
provided at both the cover 300 and the powdered detergent box 200,
to allow the cover 300 to open or close the detergent receiving
portion 210 regardless of insertion or separation of the detergent
dissolving device 100 into or from the detergent feeder receptacle
37. In this case, the elastic members 350 provided at the hinges
340 of the cover 300 may be omitted.
[0075] Alternatively, the cover may be previously fabricated as a
discrete member separable from the detergent receiving portion, and
then, is able to be coupled to or separated from the detergent
receiving portion as it is needed.
[0076] The cover 300 includes the water discharge portion 310 to
discharge water out of the detergent receiving portion 210 in a
state wherein the cover 300 closes the detergent receiving portion
210. The cover 300 is provided with a second sealing member 320 to
prevent the water received in the detergent receiving portion 210
from leaking through a gap between the detergent receiving portion
210 and the cover 300 in a state wherein the cover 300 closes the
detergent receiving portion 210. In addition, to guide the water,
discharged out of the detergent receiving portion 210 through the
water discharge portion 310, toward the water tub 20, the cover 300
has second holes 330 in communication with the first holes 231.
[0077] The water discharge portion 310 includes a water discharge
hole 311 and a water discharge channel 312 extending from the water
discharge hole 311. The water discharge hole 311 is located
approximately at the center axis of the detergent receiving portion
210, i.e. at the center axis of the water stream performing
rotating motion within the detergent receiving portion 210. In the
present embodiment, the water discharge hole 311 is located inside
the detergent receiving portion 210 and the water discharge channel
312 extends upward from the water discharge hole 311 to the cover
300. Of course, it will be appreciated that the water discharge
hole 311 may be located at other various positions inside the
detergent receiving portion 210 on the center axis of the detergent
receiving portion 210, and that the water discharge hole 311 may be
perforated in the cover 300 without the water discharge
channel.
[0078] The water discharge hole 311 or the water discharge channel
312 is provided with a second mesh 313 having a predetermined
lattice size suitable to prevent passage of powdered detergent
while allowing passage of water.
[0079] The second sealing member 320 may be provided around an
upper rim of the detergent receiving portion 210, or at a lower
surface of the cover 300, to seal a gap between the cover 300 and
the rim of the detergent receiving portion 210 in a closed state of
the cover 300. The present embodiment describes an example wherein
the second sealing member 320 is provided at the lower surface of
the cover 300.
[0080] The second sealing member 320 is formed of an annular rubber
member having a predetermined thickness, and is inserted around the
water discharge channel 312 while being fixed to the lower surface
of the cover 300.
[0081] Hereinafter, a water feed operation of the washing machine
according to the exemplary embodiment of the present invention will
be described.
[0082] FIG. 6 is a view showing an input operation of powdered
detergent in the washing machine according to the exemplary
embodiment of the present invention, and FIGS. 7 and 8 are views
showing an operation of the detergent dissolving device in the
washing machine according to the exemplary embodiment of the
present invention.
[0083] As shown in FIG. 6, the user is able to slidably pull the
detergent feeder 40 out of the detergent feeder receptacle 37 and
then, put powdered detergent into the detergent receiving portion
210 of the detergent dissolving device 100 to initiate washing of
laundry.
[0084] If the detergent feeder 40 is inserted into the detergent
feeder receptacle 37 after input of the powdered detergent into the
detergent receiving portion 210, the cover 300 is pivotally rotated
downward such that the second sealing member 320 of the cover 300
seals the rim of the detergent receiving portion 210. In a
completely inserted position of the detergent feeder 40, the inlet
port 38 of the water feeder 30 is fitted into the water feed
channel 222 of the water dissolving device 100.
[0085] Thereafter, if the water feed valves 33 and 34 are opened,
as shown in FIG. 7, water is fed in the tangential direction of the
circular cross sectional detergent receiving portion 210 through
the inlet port 38 and water feed channel 222. With the arrangement
of the detergent receiving portion 210 and water feed channel 222,
the water, fed into the detergent receiving portion 210, creates an
eddy, performing rotating motion within the detergent receiving
portion 210.
[0086] The rotating water stream (water eddy) facilitates effective
dissolution of powdered detergent. Moreover, the undissolved
powdered detergent collides with the inner periphery of the
detergent receiving portion under the influence of centrifugal
force, thereby being moved downward.
[0087] Simultaneous with the dissolution of powdered detergent, the
wash water containing the dissolved detergent is discharged out of
the detergent receiving portion 210 through the water discharge
hole 311 provided at the top of the center axis of the rotating
water stream. Although the wash water to be discharged through the
water discharge hole 311 may contain some of the powdered
detergent, the second mesh 313 provided at the water discharge hole
311 filters the powdered detergent, allowing only the wash water
containing dissolved detergent to be discharged.
[0088] The wash water, discharged through the water discharge hole
310, is moved downward to the bottom of the detergent feeder
receptacle 37 by way of the second holes 330 of the cover 300 and
the first holes 231 in communication with the second holes 330,
thereby being fed into the water tub 20.
[0089] If the above-described operation is repeated until the
entirety of the powdered detergent in the detergent receiving
portion 210 is dissolved, as shown in FIG. 8, the water is also
able to be discharged through the auxiliary water discharge hole
211 that was clogged by the powdered detergent.
[0090] Accordingly, the above-described exemplary embodiment can
facilitate dissolution of the powdered detergent by creating the
eddy of water stream in the detergent receiving portion 210 using
only water pressure of a water source without a separate device,
and also, can feed only wash water, in which powdered detergent is
completely dissolved, into the water tub 20 by discharging the wash
water through the water discharge hole 311 at the top of the center
axis of the rotating water stream.
[0091] Further, completely dissolving the powdered detergent
received in the detergent receiving portion 210 prior to feeding
the detergent into the water tub 20 can prevent generation of any
powdered detergent residue in the detergent receiving portion
210.
[0092] As a result, no powdered detergent remains in the detergent
receiving portion 210 when water is fed for a rinsing operation,
and therefore, pure water containing no detergent can be fed into
the water tub 20, assuring improved rinsing effects. In this case,
the water is fed into the water tub 20 through the auxiliary water
discharge hole 211.
[0093] As is apparent from the above description, a detergent
dissolving device for a washing machine according to the exemplary
embodiment of the present invention is configured in such a manner
that water, fed into a detergent receiving portion of the detergent
dissolving device is guided to perform rotating motion in the
detergent receiving portion. This configuration has the effects of
enhancing solubility of powdered detergent therein and preventing
the powdered detergent from remaining in the detergent receiving
portion.
[0094] Further, a water discharge hole of the detergent dissolving
device is positioned at the top of a center axis of the rotating
water stream, preventing the powdered detergent from being fed into
a water tub in an incompletely dissolved state.
[0095] Although an embodiment of the present invention has been
shown and described, it would be appreciated by those skilled in
the art that changes may be made in this embodiment without
departing from the principles and spirit of the invention, the
scope of which is defined in the claims and their equivalents.
* * * * *