U.S. patent application number 12/149017 was filed with the patent office on 2008-11-13 for clothes treating apparatus.
Invention is credited to Sang Hun Bae, Yeon Sik Choi, Seon Il Heo, Sang Jin Kim, Dong Geun Lee, Ju Han Yoon.
Application Number | 20080276659 12/149017 |
Document ID | / |
Family ID | 39637070 |
Filed Date | 2008-11-13 |
United States Patent
Application |
20080276659 |
Kind Code |
A1 |
Bae; Sang Hun ; et
al. |
November 13, 2008 |
Clothes treating apparatus
Abstract
A clothes treating apparatus is disclosed. The clothes treating
apparatus includes a drum to hold laundry, a steam generating
device to supply steam to the drum, a water supply source to supply
water to the steam generating device, and a backflow inhibiting
unit to inhibit water from flowing back from the steam generating
device when the water supply source is removed. Accordingly, the
clothes treating apparatus can inhibit or remove wrinkles generated
at clothes, and can collect water from the steam generating device
after operation of the steam generating device is terminated.
Inventors: |
Bae; Sang Hun; (Changwon-Si,
KR) ; Lee; Dong Geun; (Changwon-Si, KR) ; Heo;
Seon Il; (Changwon-Si, KR) ; Choi; Yeon Sik;
(Changwon-Si, KR) ; Kim; Sang Jin; (Changwon-Si,
KR) ; Yoon; Ju Han; (Changwon-Si, KR) |
Correspondence
Address: |
MCKENNA LONG & ALDRIDGE LLP
1900 K STREET, NW
WASHINGTON
DC
20006
US
|
Family ID: |
39637070 |
Appl. No.: |
12/149017 |
Filed: |
April 24, 2008 |
Current U.S.
Class: |
68/5C |
Current CPC
Class: |
D06F 39/008 20130101;
D06F 58/203 20130101; D06F 39/081 20130101 |
Class at
Publication: |
68/5.C |
International
Class: |
D06F 21/00 20060101
D06F021/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 25, 2007 |
KR |
2007-0040316 |
Apr 25, 2007 |
KR |
2007-0040319 |
Sep 27, 2007 |
KR |
2007-0097258 |
Claims
1. A clothes treating apparatus comprising: a drum to hold laundry;
a steam generating device to supply steam to the drum; a water
supply source to supply water to the steam generating device; and a
backflow inhibiting unit configured to inhibit water from flowing
back from the steam generating device when the water supply source
is removed.
2. The clothes treating apparatus according to claim 1, wherein the
backflow inhibiting unit is configured as a water supply hose, the
water supply hose having an end connected to a water supply port
formed at an upper portion of the steam generating device.
3. The clothes treating apparatus according to claim 2, wherein the
water supply port is positioned above a highest water level of the
steam generating device.
4. The clothes treating apparatus according to claim 3, further
comprising: a pump provided between the water supply source and the
steam generating device to selectively supply or collect water
through the water supply port, wherein the water supply hose
further has the other end connected to an outlet port of the
pump.
5. The clothes treating apparatus according to claim 4, wherein the
outlet port of the pump is positioned below the water supply port
of the steam generating device.
6. The clothes treating apparatus according to claim 4, wherein the
pump is capable of being rotated in forward and reverse
directions.
7. The clothes treating apparatus according to claim 2, wherein the
steam generating device includes a housing formed with the water
supply port, and a water pipe having a first end communicating with
the water supply port and a second end positioned below the water
supply port.
8. The clothes treating apparatus according to claim 7, wherein the
steam generating device further includes a water level sensor to
sense a water level in the housing, and the water pipe has a lower
end positioned below a lower end of the water level sensor.
9. The clothes treating apparatus according to claim 7, wherein the
steam generating device further includes a heater, and the water
pipe has a lower end positioned above an upper end of the
heater.
10. The clothes treating apparatus according to claim 9, wherein
the housing includes an upper housing formed with the water supply
port, and a lower housing mounted with the heater.
11. The clothes treating apparatus according to claim 10, wherein
the lower housing includes a main portion mounted with the heater,
and an expanded portion coupled to the upper housing, the expanded
portion having a width larger than the main portion.
12. The clothes treating apparatus according to claim 11, wherein
the lower end of the water pipe is positioned on a left side or a
right side of the heater.
13. The clothes treating apparatus according to claim 7, wherein
the water pipe is formed integrally with the housing.
14. The clothes treating apparatus according to claim 7, wherein
the water pipe is extended from the water supply port, and is bent
downward.
15. The clothes treating apparatus according to claim 1, further
comprising: a water supply unit capable of supplying water from the
water supply source to the steam generating device while leaving
little water in the water supply source.
16. The clothes treating apparatus according to claim 15, wherein
the water supply unit includes a pipe member removably connected to
a water path through which water is discharged from the water
supply source, and a fixing member to selectively fix the pipe
member.
17. The clothes treating apparatus according to claim 16, wherein
the pipe member includes a connecting part removably connected to
the water path of the water supply source, and an extended part
extended from the connecting part.
18. The clothes treating apparatus according to claim 17, wherein
the extended part is bent from the connecting part at a
predetermined angle.
19. The clothes treating apparatus according to claim 18, wherein
the angle is substantially 90.degree..
20. A clothes treating apparatus comprising: a drum to hold
laundry; a steam generating device including a housing having a
water supply port, and a water pipe having a first end
communicating with the water supply port and a second end
positioned below the water supply port; and a pump to selectively
supply or collect water to/from the steam generating device through
the water supply port.
Description
[0001] This application claims the benefit of Korean Patent
Application No. 2007-0040316, filed on Apr. 25, 2007; Korean Patent
Application No. 2007-0040319, filed on Apr. 25, 2007 and Korean
Patent Application No. 2007-0097258, filed on Sep. 27, 2007, which
is hereby incorporated by reference as if fully set forth
herein.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a clothes treating
apparatus, and more particularly, to a clothes treating apparatus
capable of collecting water from a steam generating device which
generates steam.
[0004] 2. Discussion of the Related Art
[0005] Clothes treating apparatuses are apparatuses for treating
clothes through washing, drying, refreshing and other processes.
Such clothes treating apparatuses include washing machines, laundry
dryers, clothes refreshers, and so on.
[0006] Specifically, a washing machine is operated to wash laundry
by use of water. In view of a principle of water washing, the
washed laundry has wrinkles, and the wrinkles are not removed
during a drying process in a laundry dryer.
[0007] Thus, in order to remove wrinkles from the dried laundry, a
user should iron out the dried laundry.
[0008] Besides the washed laundry, when clothes are kept and used,
the clothes may have wrinkles, crumples and fold marks
(hereinafter, commonly referred to as "wrinkles"). Accordingly,
there have been demands for development of devices capable of also
easily removing wrinkles generated by common usage and storage of
the clothes.
SUMMARY OF THE INVENTION
[0009] Accordingly, the present invention is directed to a clothes
treating apparatus that substantially obviates one or more problems
due to limitations and disadvantages of the related art.
[0010] An object of the present invention is to provide a clothes
treating apparatus capable of inhibiting or removing wrinkles
generated at clothes.
[0011] Another object of the present invention is to provide a
clothes treating apparatus capable of collecting water from a steam
generating device mounted in the clothes treating apparatus after
operation of the steam generating device is terminated.
[0012] A further object of the present invention is to provide a
clothes treating apparatus capable of inhibiting back flow of water
even when a water supply source for supplying water to the clothes
treating apparatus is demounted.
[0013] A further object of the present invention is to provide a
clothes treating apparatus capable of inhibiting erroneous
operation of a water level sensor mounted in a steam generating
device and damage of a heater.
[0014] Yet another object of the present invention is to provide a
clothes treating apparatus capable of using as much water as
possible supplied from a water supply source.
[0015] Additional advantages, objects, and features of the
invention will be set forth in part in the description which
follows and in part will become apparent to those having ordinary
skill in the art upon examination of the following or may be
learned from practice of the invention. The objectives and other
advantages of the invention may be realized and attained by the
structure particularly pointed out in the written description and
claims hereof as well as the appended drawings.
[0016] To achieve these objects and other advantages and in
accordance with the purpose of the invention, as embodied and
broadly described herein, a clothes treating apparatus comprises: a
drum to hold laundry; a steam generating device to supply steam to
the drum; a water supply source to supply water to the steam
generating device; and a backflow inhibiting unit to inhibit water
from flowing back from the steam generating device when the water
supply source is removed.
[0017] The backflow inhibiting unit may be configured as a water
supply hose, the water supply hose having an end connected to a
water supply port formed at an upper portion of the steam
generating device.
[0018] Preferably, the water supply port is positioned above a
highest water level of the steam generating device.
[0019] The clothes treating apparatus may further comprise a pump
provided between the water supply source and the steam generating
device to selectively supply or collect water through the water
supply port. The water supply hose may further have the other end
connected to an outlet port of the pump.
[0020] Preferably, the outlet port of the pump is positioned below
the water supply port of the steam generating device.
[0021] Preferably, the pump is capable of being rotated in forward
and reverse directions.
[0022] The steam generating device may include a housing formed
with the water supply port, and a water pipe having a first end
communicating with the water supply port and a second end
positioned below the water supply port.
[0023] The steam generating device may further include a water
level sensor to sense a water level in the housing, and a heater.
Preferably, the water pipe has a lower end positioned below a lower
end of the water level sensor and above an upper end of the
heater.
[0024] The housing may include an upper housing formed with the
water supply port, and a lower housing mounted with the heater. The
lower housing may include a main portion mounted with the heater,
and an expanded portion coupled to the upper housing, the expanded
portion having a width larger than the main portion.
[0025] Preferably, the lower end of the water pipe is positioned on
a left side or a right side of the heater.
[0026] Preferably, the water pipe is formed integrally with the
housing. Preferably, the water pipe is extended from the water
supply port, and is bent downward.
[0027] The clothes treating apparatus may further comprise a water
supply unit capable of supplying water from the water supply source
to the steam generating device while leaving little water in the
water supply source.
[0028] The water supply unit may include a pipe member removably
connected to a water path through which water is discharged from
the water supply source, and a fixing member to selectively fix the
pipe member.
[0029] The pipe member may include a connecting part removably
connected to the water path of the water supply source, and an
extended part extended from the connecting part.
[0030] Preferably, the extended part is bent from the connecting
part.
[0031] To achieve these objects and other advantages and in
accordance with the purpose of the invention, as embodied and
broadly described herein, a clothes treating apparatus comprising:
a drum to hold laundry; a steam generating device including a
housing having a water supply port, and a water pipe having a first
end communicating with the water supply port and a second end
positioned below the water supply port; and a pump to selectively
supply or collect water to/from the steam generating device through
the water supply port.
BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The accompanying drawings, which are included to provide a
further understanding of the invention and are incorporated in and
constitute a part of this application, illustrate embodiment(s) of
the invention and together with the description serve to explain
the principle of the invention. In the drawings:
[0033] FIG. 1 is an exploded perspective view of a laundry dryer in
accordance with an exemplary embodiment of the present
invention;
[0034] FIG. 2 is a sectional view of the laundry dryer shown in
FIG. 1;
[0035] FIG. 3 is a perspective view of a steam generating device to
supply steam to the laundry dryer shown in FIG. 1, and a water
supply source to supply water to the steam generating device;
[0036] FIG. 4 is a side view of the steam generating device and the
water supply source shown in FIG. 3;
[0037] FIG. 5 is an enlarged perspective view of the steam
generating device shown in FIG. 3;
[0038] FIG. 6 is a sectional view of the steam generating device
shown in FIG. 5;
[0039] FIG. 7 is a rear perspective view of an upper housing of the
steam generating device shown in FIG. 5;
[0040] FIG. 8 is a sectional view of a modified example of the
steam generating device shown in FIG. 5;
[0041] FIG. 9 is a partially cut-away perspective view of the water
supply source;
[0042] FIG. 10 is an enlarged view of a "B" portion in FIG. 9;
[0043] FIG. 11 is a sectional view illustrating a first embodiment
of the pipe member in FIG. 9;
[0044] FIG. 12 is a sectional view illustrating a second embodiment
of the pipe member in FIG. 9;
[0045] FIG. 13 is a partial sectional view of a water supply source
in accordance with another exemplary embodiment of the present
invention;
[0046] FIG. 14 is a perspective view illustrating an
opening/closing pin and an inner sealing member in FIG. 13; and
[0047] FIG. 15 is a perspective view of a separation inhibiting
member for inhibiting separation of an elastic member in FIG.
13.
DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS
[0048] Reference will now be made in detail to the preferred
embodiments of the present invention associated with a clothes
treating apparatus and a steam generating device mounted in the
clothes treating apparatus, examples of which are illustrated in
the accompanying drawings. Wherever possible, the same reference
numbers will be used throughout the drawings to refer to the same
or like parts.
[0049] A clothes treating apparatus includes a washing machine, a
laundry dryer, a clothes refresher, and so on. Hereinafter, a
laundry dryer will be exemplarily explained. However, the present
invention is not limited to a laundry dryer, and can also be
applied to other types of clothes treating apparatuses, such as a
washing machine or a clothes refresher.
[0050] As shown in FIGS. 1 and 2, a laundry dryer according to an
exemplary embodiment of the present invention comprises a cabinet
10 defining an exterior appearance of the laundry dryer, a drum 20
rotatably mounted in the cabinet 10, and a motor 70 and a belt 68
to drive the drum 20.
[0051] A heater 90 (hereinafter, referred to as "hot air heater")
is mounted in a predetermined portion of the cabinet 10 to create
air of high temperature (hereinafter, referred to as "hot air") by
heating the air. A hot air supply duct 44 is mounted in a
predetermined portion of the cabinet 10 to supply the hot air
generated from the hot air heater 90 to the drum 20.
[0052] Also, there are provided an exhaustion duct 80 and a blower
unit 60 in the cabinet 10. The damp air heat-exchanged with the
laundry in the drum 20 is discharged outside the drum 20 through
the exhaustion duct 80, and the damp air is sucked by the blower
unit 60.
[0053] For convenience of explanation, this embodiment shows and
describes an indirect drive type laundry dryer in which the drum 20
is rotated by the motor 70 and the belt 68, however the present
invention is not limited to the indirect drive type. The present
invention can also be applied to a direct drive type laundry dryer
in which the drum 20 is directly rotated by directly connecting the
motor to a rear surface of the drum 20.
[0054] Hereinafter, the aforementioned components will be explained
in more detail.
[0055] The cabinet 10 defining the exterior appearance of the
laundry dryer includes a base 12 forming a bottom surface, a pair
of side covers 14 vertically mounted to the base 12, a front cover
16 mounted to front surfaces of the side covers 14, a rear cover 18
mounted to rear surfaces of the side covers 14, and a top cover 17
mounted to top surfaces of the covers 16 and 18.
[0056] A control panel 19 having various operational switches is
generally positioned on the top cover 17 or the front cover 16.
This embodiment shows that the control panel 19 is positioned on
the front cover 16.
[0057] An air inlet 182 and an air outlet 184 are provided at the
rear cover 18. External air is drawn through the air inlet 182, and
the air in the drum 20 is discharged outside through the air outlet
184. It is preferred that a lifter 22 is mounted in the drum 20 so
that the laundry is turned over to enhance drying efficiency.
[0058] A front supporter 30 and a rear supporter 40 are provided
between the drum 20 and the cabinet 10. More particularly, the
front supporter 30 is provided between the drum 20 and the front
cover 16, and the rear supporter 40 is provided between the drum 20
and the rear cover 18.
[0059] The drum 20 is rotatably mounted between the front supporter
30 and the rear supporter 40, and sealing members (not shown) for
inhibiting water leakage are provided between the front supporter
30 and the drum 20 and between the drum 20 and the rear supporter
40.
[0060] The front supporter 30 and the rear supporter 40 shield a
front surface and a rear surface of the drum 20, respectively, to
form a drying chamber, and support a front end and a rear end of
the drum 20.
[0061] An opening 162 is formed at the front cover 16 to
communicate the drum 20 with the outside of the laundry dryer. The
opening 162 is selectively opened and closed by a door 164. A lint
duct 50, through which the air in the drum 20 is discharged
outside, is connected to the front supporter 30, and a lint filter
52 is mounted in the lint duct 50.
[0062] A portion of the blower unit 60 is connected to the lint
duct 50, and an opposite portion of the blower unit 60 is connected
to the exhaustion duct 80. The exhaustion duct 80 is in
communication with the air outlet 184 provided at the rear cover
18.
[0063] Accordingly, if the blower unit 60 operates, the air in the
drum 20 flows through the lint duct 50, the exhaustion duct 80 and
the air outlet 184 in order, and is discharged outside. At this
time, foreign substances including lint are filtered out by the
lint filter 52.
[0064] The blower unit 60 typically includes a blower 62 and a
blower housing 64. The blower 62 is commonly connected to the motor
70 for driving the drum 20 to be driven.
[0065] An opening portion 42 including a plurality of through-holes
is formed at the rear supporter 40, and the hot air supply duct 44
is connected to the opening portion 42. The hot air supply duct 44
is in communication with the drum 20, and serves as a path for
supplying hot air to the drum 20. For this, a hot air heater (not
shown) is mounted in a predetermined portion of the hot air supply
duct 44.
[0066] The steam generating device 200 is mounted in a
predetermined portion of the cabinet 10 to generate steam and
supply the steam to the drum 20.
[0067] As shown in FIG. 3, this embodiment shows that a water
supply source 300 storing water is removably mounted in the laundry
dryer to supply water to the steam generating device 200 (the steam
generating device 200 is not directly connected to a water
tap).
[0068] The reason for supplying water to the steam generating
device 200 by use of the water supply source 300 is that the
laundry dryer having no water washing process is not necessarily
needed to be directly connected to a water tap, which might cause
increase in installing costs due to an additional water supply
hose, control unit and so on.
[0069] The water supply source 300 is removably mounted in the
laundry dryer to supply water to the steam generating device 200.
The water supply source 300 is positioned at the front side of the
cabinet 10. Also, a water supply path 210 is mounted in the laundry
dryer so as to supply water from the water supply source 300 to the
steam generating device 200.
[0070] The water supply source 300 is formed with a space to hold
water thereinside, and an outlet hole (not shown) at a
predetermined portion, through which water flows out to the water
supply path 210. The outlet hole is separably connected with the
water supply path 210.
[0071] Preferably, the water supply source 300 is mounted in a
drawer 100 so as to be put in or drawn out of the laundry dryer at
the front surface of the front cover 16.
[0072] Also, a guide part 110 is mounted in the laundry dryer so as
to guide the drawer 100 toward the water supply path 210.
[0073] The water supply path 210 serves as a path for supplying
water flowing out of the water supply source 300 to the steam
generating device 200, and is mounted between the water supply
source 300 and the steam generating device 200. Preferably, a pump
120 is mounted in the water supply path 210, so as to smoothly
supply water from the water supply source 300 to the steam
generating device 200.
[0074] The laundry dryer may be designed such that water is
supplied from the water supply source 300 to the steam generating
device 200 by use of a height difference between the water supply
source 300 and the steam generating device 200. However, because
standardized components are employed in the laundry dryer and the
laundry dryer designed to be compact, an inner space of the laundry
dryer is structurally limited. Thus, if the size of the components
is not changed, the water supply using a height difference between
the water supply source 300 and the steam generating device 200 is,
in fact, impossible. In this regard, it is preferable to mount the
compact pump 120 in the water supply path 210 so as to smoothly
supply water to the steam generating device 200.
[0075] Moreover, if the pump 120 capable of being rotated in
forward and reverse directions is mounted, there is an advantage
such that water is not only supplied from the water supply source
300 to the steam generating device 200 but also can be easily
collected from the steam generating device 200 to the water supply
source 300.
[0076] The reason for collecting water from the steam generating
device 200 when the steam generating device 200 is in a
non-operating state is to inhibit a problem such that residual
water in the steam generating device 200 may be rotten and the
rotten water may be supplied into the laundry dryer.
[0077] The water supply path 210 includes a connecting port 211
mounted to the guide part 110, corresponding to the outlet hole of
the water supply source 300, a water supply hose 213 to connect the
pump 120 and the steam generating device 200, and a connecting pipe
212 to connect the pump 120 and the connecting port 211.
[0078] As shown in FIG. 4, the steam generating device 200 is
formed with a water supply port 501 at an upper portion thereof,
and one end portion of the water supply hose 213 is connected to
the water supply port 501. Accordingly, the water supply hose 213
connected to the water supply port 501 formed at the upper portion
of the steam generating device 200 forms a backflow inhibiting
means.
[0079] Preferably, the water supply port 501 formed at the upper
portion of the steam generating device 200 is positioned above a
highest water level (A) to which water can be supplied to the steam
generating device 200. This is for inhibiting the water in the
steam generating device 200 from flowing back due to a hydraulic
pressure and leaking through the pump 120 when the water supply
source 300 is removed from the cabinet 10. In other words, since
the water supply port 501 is formed above the highest water level
of the steam generating device 200, although water remains in the
steam generating device 200, a hydraulic pressure of the residual
water is inhibited from being exerted to the water supply hose 213
through the water supply port 501.
[0080] The other end portion of the water supply hose 213 is
connected to the pump 120. Preferably, an outlet port 121, through
which water is supplied from the pump 120 to the steam generating
device 200, is formed at the pump 120, below the water supply port
501 of the steam generating device 200. Therefore, when the pump
120 is rotated in the forward direction and stops the water supply
to the steam generating device 200, water always remains in the
water supply hose 213 which connects the outlet port 121 of the
pump 120 and the water supply port 501 of the steam generating
device 200. The residual water in the water supply hose 213
inhibits deformation or damage of the pump 120, which might be
caused by operation of the pump 120 without water.
[0081] Hereinafter, the steam generating device according to an
exemplary embodiment of the present invention will be explained in
detail with reference to FIGS. 5 and 6.
[0082] The steam generating device 200 has a T-shape overall.
[0083] Describing in more detail, the steam generating device 200
includes a lower housing 400 which holds water and has a water
chamber 410 mounted with a heater 420 for heating the water, and an
upper housing 500 which is provided above the water chamber 410 and
has a steam chamber 510 for storing steam generated by heating the
water. The lower housing 400 and the upper housing 500 of the steam
generating device 200 may be provided separately from each other as
described above, or may be formed unitarily with each other.
[0084] The lower housing 400 includes a first portion 401 which is
mounted with the heater 420 and has a predetermined horizontal
length and a vertical length larger than the horizontal length
(hereinafter, the first portion will be referred to as a "main
portion"), and a second portion 402 which is extended upward from a
top of the main portion 401 to be coupled to the upper housing 500
and has a width larger than the main portion 401 (hereinafter, the
second portion will be referred to as an "expanded portion").
[0085] Because the heater 420 is mounted in the main portion 401 of
the water chamber 410, the relatively small amount of water is held
in the main portion 401, and the relatively large amount of water
is held in the expanded portion 402 and the upper housing 500.
Preferably, the expanded portion 402 is formed to be slanted
downward toward a center portion thereof. This is for inhibiting
foreign substances such as lime from being deposited to an
electrode of a water level sensor 520 mounted in the steam
generating device 200.
[0086] The lower housing 400 is provided with a drain part 430
through which the water in the water chamber 410 is discharged
outside. The drain part 430 is provided with an opening/closing
member 431 to open or close the drain part 430. If the
opening/closing member 431 opens the drain part 430, the water in
the water chamber 410 can be discharged outside. Generally, if the
steam generating device 200 is used successively, foreign
substances such as lime are accumulated in the steam generating
device 200. Since the foreign substances are discharged together
with the water when the water in the water chamber 410 is
discharged outside through the opened drain part 430, the foreign
substances can be inhibited from being accumulated in the steam
generating device 200.
[0087] The opening/closing member 431 may be configured as a drain
cap which is manually handled to open or close the drain part 430
by a user or a repairman, or may be configured as a device which is
automatically operated to perform the opening/closing operation.
For example, the opening/closing member 431 may be configured as a
solenoid valve. Also, the opening/closing member 431 may be formed
by using a siphon principle.
[0088] Since the steam generating device 200 of this embodiment has
a T-shape overall, a horizontal length of the steam generating
device 200 can be reduced while the steam generating device 200
holds the same amount of water as a conventional one. Accordingly,
interference between the drum 20 and the steam generating device
200 can be decreased.
[0089] Moreover, when the steam generating device 200 of this
embodiment is controlled to generate the same amount of steam as a
conventional one, the amount of water and a time necessary to
generate steam can be reduced.
[0090] Hereinafter, the upper housing 500 formed with the steam
chamber 510 will be explained in detail with reference to FIG.
7.
[0091] The upper housing 500 is provided with the aforementioned
water supply port 501, through which water is supplied to the upper
housing 500, and a steam discharge port 502, through which steam is
discharged out of the upper housing 500, at predetermined portions.
Preferably, the upper housing 500 has an upwardly-protruding
portion, and the water supply port 501 and the steam discharge port
502 are provided at the protruding portion.
[0092] The aforementioned water supply hose 213 is connected to the
water supply port 501 for water supply, and a steam hose 215 is
connected to the steam discharge port 502 for steam supply. As
such, because the upper housing 500 has the water supply port 501
connected with the water supply hose 213 and the steam discharge
port 502 connected with the steam hose 215, the water supply hose
213 and the steam hose 215 can be inhibited from interfering with
other components mounted in the laundry dryer when the steam
generating device 200 is mounted into the laundry dryer.
[0093] Also, the upper housing 500 is mounted with the
aforementioned water level sensor 520 and a temperature sensor
530.
[0094] The water level sensor 520 is positioned at a predetermined
distance from the water supply port 501. Preferably, the water
level sensor 520 is disposed at a deviated position from the water
supply port 501 in the water supply direction. This is for
inhibiting water discharged from the water supply port 501 from
splashing and touching the water level sensor 520, thereby
inhibiting erroneous operation of the water level sensor 520.
[0095] It is preferred that the water level sensor 520 is mounted
adjacent to an inner wall of the upper housing 500 and positioned
above the expanded portion 402 of the lower housing 400 rather than
above the main portion 401. According to another aspect, it is also
preferred that the water level sensor 520 is mounted at a
predetermined distance from an inner wall of the main portion 401
defining the water chamber 410.
[0096] Such a mounting structure of the water level sensor 520 can
effectively inhibit water or bubbles scattered at the beginning of
heating operation of the heater 420 mounted in the main portion 401
from splashing to the water level sensor 520 and causing erroneous
operation of the water level sensor 520.
[0097] Also, it is preferred that the steam generating device 200
of this embodiment has a receiving part 526 which protects the
water level sensor 520. The receiving part 526 surrounds electrode
parts 521, 522 and 523 of the water level sensor 520, and has an
opened bottom.
[0098] The electrode parts of the water level sensor 520 include a
common electrode 521, a low water level electrode 522 and a high
water level electrode 523. The water level sensor 520 senses a high
water level or a low water level depending on whether electric
current flows between the common electrode 521 and the high water
level electrode 523 or electric current flows between the common
electrode 521 and the low water level electrode 522.
[0099] As described above, the upper housing 500 is provided with
the steam discharge port 502 to discharge steam. The upper housing
500 is further provided with a separator 540 at a position adjacent
to the steam discharge port 502 so as to separate a specific
region, from which steam is discharged outside, from other
regions.
[0100] When water is heated in the water chamber 410, specifically
at the beginning of heating, water and bubbles are scattered
severely. The separator 540 inhibits the scattered water from being
introduced into the drum 20 through the steam discharge port 502.
If water is introduced into the drum 20, stains may be generated at
the laundry. Such a problem can be inhibited by the separator
540.
[0101] The separator 540 has a structure of accommodating the steam
discharge port 502 and permitting steam to flow thereinto. It is
preferred that the separator 540 is configured as a partition wall
which is formed with openings 545 so that steam passes
therethrough.
[0102] As described above, water is supplied to the water chamber
410 through the water supply hose 213, and steam in the steam
chamber 510 is discharged to the drum 20 through steam discharge
lines including the steam discharge port 502 and the steam hose
215.
[0103] When the steam generating device 200 is not used for a long
period, water in the steam generating device 200 may be rotten. In
order to inhibit the rotten water from being used in the steam
generating device 200, the water in the steam generating device 200
is required to be collected to the water supply source 300. When
collecting the water in the steam generating device 200 to the
water supply source 300, the pump 120 mounted in the water supply
path 210 is rotated in a direction opposite to the direction in
which the pump 120 is rotated to supply water to the steam
generating device 200.
[0104] So as to collect water existing in a region below the water
supply port 501 when the water in the steam generating device 200
is collected to the water supply source 300 through the water
supply port 501, the steam generating device 200 is provided with a
water pipe 550 which has one end communicating with the water
supply port 501 and the other end positioned below the water supply
port 501. In this embodiment, because the water supply port 501 of
the steam generating device 200 is formed above the highest water
level (A) of the steam generating device 200, the water pipe 550 is
required in order to remove the residual water in the steam
generating device 200.
[0105] It is illustrated in FIGS. 6 and 7 that the water pipe 550
is extended from the top of the upper housing 500. Preferably, the
water pipe 550 is formed integrally with the upper housing 500 by
injection molding or the like.
[0106] It is also preferred that the lower end of the water pipe
550 is positioned below the lower end of the low water level
electrode 522 of the water level sensor 520. This is for inhibiting
the residual water in the steam generating device 200 after
collected from the steam generating device 200 from touching the
low water level electrode 522, thereby inhibiting generation of
scales on the low water level electrode 522.
[0107] If scales are generated on the low water level electrode
522, the water level sensor 520 may be operated erroneously when
sensing a low water level by electric current flow between the
common electrode 521 and the low water level electrode 522.
[0108] As shown in FIG. 6, it is also preferred that the lower end
of the water pipe 550 is positioned above the upper end of the
heater 420. This is for leaving water to a certain extent in the
steam generating device 200 so that the heater 420 can be immersed
in water even after water is collected from the steam generating
device 200.
[0109] The reason for leaving a certain amount of water in the
steam generating device 200 is to inhibit the heater 420 from being
overheated, when water is collected from the steam generating
device 200 at inadequate circumstances or the steam generating
device 200 is operated unexpectedly before water is supplied to the
steam generating device 200.
[0110] The overheated heater 420 may cause a fire or damage of the
heater 420 itself or other components mounted in the steam
generating device 200.
[0111] Preferably, the lower end of the water pipe 550 is
positioned on the left side or right side of the heater 420. This
is for inhibiting steam or water boiled up by the heater 420 from
flowing out through the water supply port 501.
[0112] As shown in FIG. 8, the water pipe 550 may be formed to be
extended from the water supply port 501 and bent downward. In such
a case, it is preferred that the water pipe 550 is provided
separately from the upper housing 500 and connected to the water
supply port 501. Also, it is preferred that the water pipe 550 is
made of a copper material which resists rust.
[0113] By providing the water pipe 550, one end of which
communicates with the water supply port 501 and the other end of
which is positioned below the water supply port 501, water can be
collected from the steam generating device 200 while a certain
amount of water is left behind in the steam generating device 200,
thereby inhibiting supply of steam generated from rotten water to
the drum 20.
[0114] Further, by positioning the lower end of the water pipe 550
below the lower end of the water level sensor 520, generation of
scales on the water level sensor 520 can be inhibited.
[0115] Further, by positioning the lower end of the water pipe 550
above the upper end of the heater 420, damage of the heater 420 can
be inhibited.
[0116] This embodiment of the present invention shows that the
water supply source 300 is configured as a cartridge which holds a
predetermined amount of water.
[0117] Hereinafter, the cartridge used as the water supply source
300 and the water supply unit mounted in the cartridge will be
described in detail with reference to the drawings.
[0118] FIG. 9 is a partially cut-away perspective view showing the
interior of the cartridge shown in FIG. 3, and FIG. 10 is an
enlarged view of a "B" portion in FIG. 9.
[0119] As described above, the laundry dryer according to the
present invention comprises the cartridge 300 which is removably
connected to the pump 120. Water is supplied to the cartridge 300
so as to be supplied to the steam generating device 200.
[0120] First, the disassemblable constitution of the cartridge will
now be explained in detail with reference to FIG. 9.
[0121] The cartridge 300 includes a lower housing 310 to
practically hold water, and an upper housing 320 removably coupled
to the lower housing 310. As such, if the cartridge 300 is
constituted by the lower housing 310 and the upper housing 320
which can be disassembled from each other, it is easy to remove
contaminants from the cartridge 300 and to separate a filter 330,
which will be described later, from the cartridge 300 to clean and
reuse the filter 330.
[0122] Preferably, the upper housing 320 is mounted with the first
filter 330. Particularly, the first filter 330 is mounted to a
water inlet part 322 of the upper housing 320 so as to perform
first-stage filtering operation for water supplied to the cartridge
300.
[0123] The lower housing 310 is provided with a water path 360,
through which water in the cartridge 300 is selectively supplied
outside. An opening/closing unit 380 (refer to FIG. 13) is provided
in the water path 360, so as to inhibit the water in the cartridge
300 from flowing outside when the cartridge 300 is removed from the
laundry dryer and permit the water in the cartridge 300 to flow
outside when the cartridge 300 is mounted in the laundry dryer.
[0124] Preferably, a second filter (not shown) is connected to the
water path 360 to filter the water flowing through the water path
360. More preferably, the second filter is removably connected to
the water path 360. The concrete constitution of the
opening/closing unit 380 mounted in the water path 360 will be
explained in detail later.
[0125] Accordingly, by using the first filter 330 and the second
filter (not shown), impurities such as fine dusts included in water
can be doubly filtered out. A water-softening member (not shown)
may be provided in the cartridge 300 to soften the water in the
cartridge 300. The water-softening member may be removably mounted
in the cartridge 300. When hardness of water supplied to the steam
generating device 200 is large, the water-softening member serves
to remove calcium ions and magnesium ions included in water
beforehand, to thereby inhibit generation of lime.
[0126] Hereinafter, the water supply unit 340 will be explained in
detail with reference to FIGS. 9 and 10.
[0127] The water supply unit 340 includes a pipe member 342 which
is removably connected to the water path 360 for communicating the
interior of the cartridge 300 with the exterior to discharge water,
and a fixing member 349 which selectively fixes the pipe member 342
to the water path 360.
[0128] The water path 360 for communicating the interior of the
cartridge 300 with the exterior includes an inner path 362 (refer
to FIG. 11) which is inserted into the cartridge 300 by a
predetermined length, and an outer path 366 (refer to FIG. 11)
which communicates with the inner path 362 and is extended outside
the cartridge 300 by a predetermined length.
[0129] The pipe member 342 is removably connected to the inner path
362. Particularly, the pipe member 342 includes a connecting part
343 removably connected to the inner path 362, and an extended part
348 extended from the connecting part 343. The extended part 348 is
bent from the connecting part 343, preferably at an angle of
90.degree..
[0130] The fixing member 349 may be configured as a protrusion
which is protruded from an outer peripheral surface of the inner
path 362, and the connecting part 343 of the pipe member 342 is
formed with a slot 350 corresponding to the protrusion 349. When
the pipe member 342 is connected to the inner path 362, the
protrusion 349 is fitted into the slot 350, and thus the pipe
member 342 is fixed to the inner path 362.
[0131] In order to inhibit separation of the protrusion 349 from
the slot 350, the slot 350 includes an insertion portion 352 into
which the protrusion 349 is inserted, and a fixing portion 354
which is extended from the insertion portion 352 so as to fix the
protrusion 349. Preferably, as shown in FIG. 10, the fixing portion
354 is formed to be bent from the insertion portion 352. When the
pipe member 342 is fixed to the inner path 362, first, the pipe
member 342 is put toward the inner path 362 so that the protrusion
349 is inserted into the insertion portion 352 of the slot 350.
Subsequently, the pipe member 342 is rotated so that the protrusion
349 is fixed to the fixing portion 354 of the slot 350.
Accordingly, unexpected separation of the protrusion 349 from the
slot 350 is inhibited. Moreover, erroneous assembly of the pipe
member 342 to the inner path 362 is inhibited.
[0132] When the pipe member 342 is connected to the inner path 362
as described above, it is preferred that the extended part 348 of
the pipe member 342 is arranged perpendicularly to the bottom of
the cartridge 300. This is for minimizing a flowing distance of the
water moving through the pipe member 342, thereby more easily
discharging the water.
[0133] To achieve this, it is preferred that when the protrusion
349 of the fixing member is fitted into the fixing portion 354 of
the slot 350, the extended part 348 of the pipe member 342 is set
to be located substantially perpendicularly to the bottom of the
cartridge 300.
[0134] In order to use the water held in the cartridge 300 as much
as possible, the present invention may be constituted such that the
end of the extended part 348 is located as close to the bottom of
the cartridge 300 as possible (first embodiment), or the end of the
extended part 348 is contacted with the bottom of the cartridge 300
(second embodiment) when the pipe member 342 is connected to the
inner path 362. FIG. 11 is a side view showing an extended part
348a according to the first embodiment of the pipe member 342, and
FIG. 12 is a side view showing an extended part 348b according to
the second embodiment of the pipe member 342.
[0135] The first embodiment of the pipe member 342 will now be
described with reference to FIG. 11. The pipe member 342 may be
formed such that the end of the extended part 348a is located
adjacent to the bottom of the cartridge 300 when the pipe member
342 is connected to the inner path 362. In such a case, in order to
communicate the interior of the extended part 348a with the
interior of the cartridge 300, as shown in FIG. 11, the end of the
extended part 348a is positioned at a predetermined gap (C) from
the bottom of the cartridge 300. Preferably, the gap (C) is set to
be 1 to 2 mm, so as to smoothly discharge the water near the bottom
of the cartridge 300 through the pipe member 342. However, the gap
(C) is not limited to 1 to 2 mm.
[0136] The second embodiment of the pipe member 342 will now be
described with reference to FIG. 12. The pipe member 342 may be
formed such that the end of the extended part 348b is contacted
with the bottom of the cartridge 300. In such a case, in order to
communicate the interior of the extended part 348b with the
interior of the cartridge 300, the end portion of the extended part
348b is formed with a plurality of holes 344. Accordingly, the
water in the cartridge 300 can flow into the pipe member 342
through the holes 344, and can be discharged outside through the
pipe member 342. Since the end of the extended part 348b is
contacted with the bottom of the cartridge 300, the second
embodiment can use a little more water near the bottom of the
cartridge 300, when compared to the above-described first
embodiment.
[0137] In a case where the cartridge 300 is selectively connected
to the pump 120 as described above, it is preferable to provide the
opening/closing unit 380 which permits the water in the cartridge
300 to be discharged only when the cartridge 300 is connected to
the pump 120.
[0138] FIG. 13 is a sectional view showing the opening/closing unit
provided in the water path of the cartridge according to the
present invention.
[0139] Referring to FIG. 13, the opening/closing unit 380 includes
an opening/closing pin 370 which is mounted in the water path 360
to selectively open or close the water path 360 for communicating
the interior of the cartridge 300 with the exterior, and an elastic
member 364 to apply an elastic force to the opening/closing pin
370. The opening/closing pin 370 is illustrated in FIG. 14 in
detail.
[0140] The opening/closing pin 370 includes a moving part 374 and
an opening/closing part 372 coupled to the moving part 374. As
shown in FIG. 14, the moving part 374 has blades formed in a
substantially cross shape. Water can flow through spaces between
the blades of a cross shape. Preferably, the opening/closing part
372 is made of a rubber material.
[0141] An inner sealing member 376 is provided between the moving
part 374 and a blocking wall 367 formed in the outer path 366. An
outer sealing member 369 is provided on the outer peripheral
surface of the outer path 366.
[0142] The elastic member 364 applies an elastic force to the
opening/closing pin 370 in the water path 360 so that the
opening/closing pin 370 is elastically biased to the outer path
366, and the opening/closing part 372 of the opening/closing pin
370 and the inner sealing member 376 close the outer path 366. As
shown in FIG. 14, the inner sealing member 376 is formed in a ring
shape. The inner sealing member 376 comes into close contact with
the blocking wall 367 by the elastic force of the elastic member
364, and closes the outer path 366.
[0143] When the connecting port 211 extended from the pump 120 is
connected to the outer path 366, the outer path 366 is inserted
into the connecting port 211, and thus the outer sealing member 369
is sealingly contacted with the inner surface of the connecting
port 211.
[0144] It is preferred that the connecting port 211 is provided
with a protrusion at a center portion thereof. When the connecting
port 211 and the outer path 366 are connected to each other, the
protrusion provided in the connecting port 211 pushes the
opening/closing pin 370 toward the interior of the cartridge 300,
and accordingly the opening/closing pin 370 is moved toward the
inner path 362 against the elastic force of the elastic member
364.
[0145] Since the opening/closing pin 370 is moved toward the inner
path 362, a space is generated between the inner sealing member 376
and the blocking wall 367, and thus water can flow through the
spaces between the blades of a cross shape of the moving part 374
and the space between the inner sealing member 376 and the blocking
wall 367.
[0146] It is also preferred that the opening/closing unit 380 is
provided with a stopper 390 which inhibits separation of the
elastic member 364 when the pipe member 342 is removed. The stopper
390 may be press-fitted in the end portion of the inner path
362.
[0147] As shown in FIG. 13, if the stopper 390 is fixed in the end
portion of the inner path 362, one end of the elastic member 364 is
supported by the opening/closing pin 370, and the other end of the
elastic member 364 is supported by the stopper 390. Therefore, even
when the pipe member 342 is removed from the inner path 362,
separation of the elastic member 364 from the inner path 362 is
inhibited.
[0148] If the stopper 390 is eliminated from the constitution shown
in FIG. 13, one end of the elastic member 364 is supported by the
opening/closing pin 370, and the other end of the elastic member
364 is supported by the pipe member 342 (not by the stopper 390),
as shown in FIG. 11 or 12.
[0149] Thus, without the stopper 390, when the pipe member 342 is
removed from the inner path 362 to be cleaned or repaired, the
other end of the elastic member 364 cannot be supported by the pipe
member 342 any more, and as a result the elastic member 364 is
separated from the inner path 362 by its own elastic force.
[0150] If the separation of the elastic member 364 occurs whenever
the pipe member 342 is removed from the inner path 362, the elastic
member 364 may be easily damaged or missing. In this regard, it is
preferable to provide the stopper 390 in the inner path 362, so as
to inhibit separation of the elastic member 364 from the inner path
362 even when the pipe member 342 is removed from the inner path
362.
[0151] FIG. 15 is a perspective view showing the stopper 390.
[0152] Referring to FIG. 15, it is preferred that the stopper 390
has a diameter a little larger than an inner diameter of the inner
path 362 so as to be press-fitted in the inner path 362. Such
press-fitting of the stopper 390 in the inner path 362 inhibits the
stopper 390 from being easily separated from the inner path
362.
[0153] The stopper 390 is formed with an opening 392, through which
water can flow.
[0154] Hereinafter, the operation of the laundry dryer as
constituted above will be explained briefly.
[0155] Before driving the laundry dryer, a user dismantles the
cartridge 300 from the cabinet 10, and fills water into the
cartridge 300. Then, a user mounts the cartridge 300 to the cabinet
10.
[0156] If a user operates the laundry dryer to perform a steam
supply mode, water is supplied from the cartridge 300 to the steam
generating device 200 by the pump 120. The water in the steam
generating device 200 is heated, and steam is supplied to the drum
20.
[0157] At this time, since the water supply unit 340 is provided in
the cartridge 300, the water held in the cartridge 300, even near
the bottom of the cartridge 300, can be used as much as
possible.
[0158] When the operation of the steam generating device 200 is
terminated, the pump 120 is rotated in a direction opposite to the
direction in which the pump 120 is rotated to supply the water, so
as to collect the residual water in the steam generating device 200
to the cartridge 300. At this time, a certain amount of water
corresponding to a water level between the heater 420 and the water
level sensor 520 remains in the steam generating device 200 by the
water pipe 500 provided in the steam generating device 200.
[0159] Even when a user removes the cartridge 300 from the cabinet
10, backflow of water from the steam generating device 200 to the
cartridge 300 is inhibited by the backflow inhibiting means.
[0160] It will be apparent to those skilled in the art that various
modifications and variations can be made in the present invention
without departing from the spirit or scope of the inventions. Thus,
it is intended that the present invention covers the modifications
and variations of this invention provided they come within the
scope of the appended claims and their equivalents.
* * * * *