EP2703541B1 - Laundry treatment method and apparatus - Google Patents
Laundry treatment method and apparatus Download PDFInfo
- Publication number
- EP2703541B1 EP2703541B1 EP13182571.3A EP13182571A EP2703541B1 EP 2703541 B1 EP2703541 B1 EP 2703541B1 EP 13182571 A EP13182571 A EP 13182571A EP 2703541 B1 EP2703541 B1 EP 2703541B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- spraying
- laundry
- detergent
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 89
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 114
- 239000007921 spray Substances 0.000 claims description 92
- 238000005507 spraying Methods 0.000 claims description 85
- 238000004140 cleaning Methods 0.000 claims description 58
- 239000007788 liquid Substances 0.000 claims description 57
- 238000001035 drying Methods 0.000 claims description 54
- 239000003599 detergent Substances 0.000 claims description 47
- 238000007664 blowing Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 description 52
- 238000005406 washing Methods 0.000 description 23
- 239000000356 contaminant Substances 0.000 description 22
- 230000008878 coupling Effects 0.000 description 13
- 238000010168 coupling process Methods 0.000 description 13
- 238000005859 coupling reaction Methods 0.000 description 13
- 230000008595 infiltration Effects 0.000 description 11
- 238000001764 infiltration Methods 0.000 description 11
- 238000011109 contamination Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/203—Laundry conditioning arrangements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/30—Drying processes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/36—Flow or velocity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/38—Time, e.g. duration
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/16—Air properties
- D06F2105/24—Flow or velocity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
- D06F39/022—Devices for adding soap or other washing agents in a liquid state
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/40—Steam generating arrangements
Definitions
- the present invention relates to a laundry treatment method and an apparatus.
- laundry treatment machines include washing machines, drying machines, and drying & washing machines.
- a washing machine is an apparatus that performs washing, rinsing, and spinning cycles to remove contaminants from laundry such as clothing and bedding using water, detergent, and mechanical action.
- the washing machines are classified into a top-loading type in which a drum holding laundry rotates about a vertical axis, and a front-loading type in which the drum rotates about a horizontal axis.
- a drying machine which is an apparatus that dries a drying subject with hot air, dries the drying subject loaded into the drum with hot air or cool air.
- the washing & drying machine which is an apparatus having a drying function as well as a washing function, receives laundry such as clothing in the rotating drum and performs a washing or drying cycle according to a mode selected by a user.
- These laundry treatment machines may include a steam supply unit for supplying steam into the drum.
- a typical steam supply unit holds water in a certain container, heats water in the container to generate steam, and then transfers the generated steam to a spray nozzle through a hose.
- the steam can be condensed. Accordingly, laundry that is already dried may be again wetted by water sprayed together with the steam through the steam nozzle.
- a typical spray apparatus has a limitation in securing a desired performance because the sprayed steam cannot reach clothing due to a low steam spray pressure.
- the steam supply unit in the typical laundry treatment machine is used to sterilize laundry or unwrinkle laundry, but is inappropriate to remove contaminants from laundry. Accordingly, hand-washing is additionally needed to remove local stains on laundry, or a washing machine needs to be operated, which is very inconvenient and makes excessive time, water, and power inefficiently consumed.
- WO 2008/030051 relates to an operation method of a washing machine including performing a primary rinsing operation, a steam washing operation and a main washing operation.
- the present invention provides a laundry treatment method that removes contaminants from laundry with steam.
- the present invention also provides a laundry treatment method that can easily remove local spots from laundry.
- the present invention also provides a laundry treatment method that can reduce the laundry treatment time and the power consumption.
- the present invention also provides a laundry treatment method that can secure sufficient performance regardless of the type of contaminant.
- the present invention also provides a laundry treatment method that can secure sufficient performance for both of water-soluble and fatty contaminants.
- the present invention also provides a laundry treatment apparatus.
- a laundry treatment method using a steam spraying apparatus comprising: spraying a cleaning liquid with a pre-mixed detergent onto laundry contained in a space for holding laundry; waiting for a certain time interval such that the sprayed cleaning liquid is absorbed into laundry; and spraying steam to laundry, the steam being generated by applying heat to flowing water to the detergent-absorbed laundry, wherein the spraying of the cleaning liquid and the spraying of the steam are performed using the same nozzle.
- the spraying of the cleaning liquid may further include blowing air into a space holding laundry during the spraying of the cleaning liquid.
- the spraying of the cleaning liquid may include spraying steam at a spray angle of about 30 degrees to about 60 degrees.
- the spraying of the steam may be performed such that the steam directly contacts laundry.
- An amount of the steam contacting laundry may be about 40% or more of a total amount of the steam generated by heating.
- an internal temperature of a space holding laundry may be maintained at a temperature of about 35 degrees Celsius to about 40 degrees Celsius.
- the spraying of the steam may be performed together with heating for generating the steam.
- a spray rate of the steam may range from about 70 cc per minute to about 120 cc per minute.
- the certain time interval may range from about 1 minute to about 4 minutes, preferably depending on the density of the detergent used.
- the spraying of the steam may include blowing hot air into the space holding laundry.
- the laundry treatment method may further include drying laundry after the spraying of the steam.
- the drying of laundry may include blowing hot air into the space holding laundry.
- the drying of laundry may include blowing hot air for about 5 minutes to about 10 minutes.
- the spraying of the steam and the drying of laundry may be repeatedly performed.
- the laundry treatment method may further include reducing a temperature by waiting for a certain time such that laundry is cooled after the drying of laundry.
- the reducing of the temperature may include blowing cool air into the space holding laundry.
- a time during which cool air is blown into the space may be within about 1 minute.
- the spraying of the cleaning liquid may include receiving a detergent from a detergent receiving unit storing the detergent to perform the spraying.
- the spraying of the cleaning liquid and the spraying of the steam may be performed using the same nozzle, and in the spraying of the steam, a detergent supply from the detergent receiving unit to the nozzle may be stopped.
- water may be supplied to the same nozzle via the detergent receiving unit holding the detergent, and in the spraying of the cleaning liquid, a total amount of the detergent held in the detergent receiving unit may be supplied to the nozzle.
- the invention provides a laundry treatment apparatus, comprising: a drum for receiving clothing, being rotatably disposed in a casing; a steam spraying apparatus for generating and spraying steam into the drum; and a water supply pipe for supplying water into the steam spraying apparatus, wherein the steam spraying apparatus includes a nozzle configured for spraying cleaning liquid with pre-mixed detergent and steam therethrough.
- a drying machine among laundry treatment machines will be exemplified, but embodiments are not limited thereto.
- a laundry treatment method according to an embodiment of the present invention can be applied to other laundry treatment machines such as washing machines with a steam spraying function or washing & drying machines within the scope of the present invention.
- FIG. 1 is a perspective view illustrating a drying machine according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 .
- FIG. 3 is an exploded perspective view illustrating a drying machine according to an embodiment of the present invention.
- a drying machine 1 may include a casing defining the exterior thereof and a drum 4 rotatably disposed in the casing and receiving laundry such as clothing.
- a lifter 6 may be provided on the inner circumferential surface of the drum 4 to tumble clothing according to the rotation of the drum 4.
- the casing may include a cabinet 30, a cabinet cover 32, a control panel 40, a back panel 34, a top plate 36, and a base 38.
- the cabinet cover 32 may be mounted on the front side of the cabinet 30 and may have a clothing loading hole at the center thereof.
- the control panel 40 may be provided at an upper side of the cabinet cover 32.
- the back panel 34 may be mounted on the rear side of the cabinet 30 and may have an air hole 34h that allows air to flow in and out of the cabinet 30.
- the top plate 36 may cover the upper portion of the cabinet 30.
- the base 38 may be mounted under the cabinet 30.
- a door 28 may be pivotably coupled to the cabinet cover 32 to open or close the clothing loading hole.
- the control panel 40 may include an input unit such as buttons or dials, a display unit such as LCD and LED, and a controller 41.
- the input unit may receive various kinds of control commands related to the operation of the drying machine from a user.
- the display unit may visually display the operation state of the drying machine.
- the controller 41 may be disposed on the rear surface of the control panel 40 to control the overall operation of the drying machine.
- the cabinet 30 may include a water receiving unit 72 that supplies water to a spray apparatus 100.
- a drawer 71 may be withdrawably supported by the cabinet 30, and a water receiving unit 72 may be held in the drawer 71.
- a front support 10 and a rear support 8 may be disposed at the front portion and the rear portion in the casing.
- the front portion and the rear portion of the drum 4 may be supported by the front support 10 and the rear support 8, respectively.
- the central portion of the front support 10 may have an opening 50 communicating with the clothing loading hole.
- a ring-shaped front supporting protrusion 54 may be formed on the rear surface of the front support 10 to support the front end of the drum 4.
- a front guide roller 56 may be rotatably disposed at a lower portion of the front support 10. The inner circumferential surface of the front end of the drum 4 may be supported by the front supporting protrusion 54, and the outer circumferential surface thereof may be supported by the front guide roller 56.
- a ring-shaped rear supporting protrusion 60 may be formed on the front surface of the rear support 8 to support the rear end of the drum 4, and a rear guide roller 64 may be rotatably disposed at the lower portion of the front surface thereof.
- the inner circumferential surface of the rear end of the drum 4 may be supported by the rear supporting protrusion 60, and the outer circumferential surface thereof may be supported by the rear guide roller 64.
- a drying heater 42 may be disposed under the drum 4.
- a drying duct 14 communicating between the rear support 8 and the drying heater 42 may be disposed such that air heated by the drying heater 42 can be supplied into the drum 4.
- a lint duct 16 may be disposed on the front support 10 such that air passing the drum 4 can flow therein.
- the drying duct 14 may have a plurality of passage holes 144 such that air can be discharged into the drum 4. Due to a blowing force according to the operation of the blower 22, air may flow along the lint duct 16, the blower 22, and a discharge duct 20. Particularly, during the air flowing, air heated by the drying heater 42 may flow along the drying duct 14, and then may be discharged into the drum 4 through the passage hole 144.
- air introduced into the lint duct 16 may be purified by a filter 18.
- the discharge duct 20 may be disposed at the rear surface of the casing such that air inside the line duct 16 can be guided to the outside of the casing.
- the blower 22 may be disposed between the discharge duct 20 and the lint duct 16. Also, a motor 24 may be provided to generate a driving force of the blower 22 and the drum 4, and a power transmission belt 26 may be provided to rotate the drum through the driving force of the motor 24.
- FIG. 4 is a perspective view illustrating the inside of a drying machine including a spray apparatus 100.
- FIG. 5A is a perspective view of a spray apparatus.
- FIG. 5B is a view illustrating a flow passage forming part of a spray apparatus.
- FIG. 5C is a cross-sectional view taken along line B-B of FIG. 5B .
- the spray apparatus 100 may spray water into the drum 4.
- the spray apparatus 100 may include a flow passage forming part 160 and a steam generating heater 130, and a nozzle 170.
- the flow passage forming part 160 may have a flow passage that guides water introduced through the inlet 140 to an outlet 121.
- the steam generating heater 130 may apply heat to water flowing along the flow passage in the flow passage forming part 160.
- the nozzle 170 may spray steam generated by the steam generating heater 130.
- the nozzle 170 may spray the steam at a certain pressure.
- the pressure of the injected steam is preferably within a range of 0.2 to 0.4 bars above atmospheric pressure.
- the flow passage forming unit 160 may be directly supplied with water from an external water resource such as a faucet.
- a water supply hose connected to the external water resource may be connected to the inlet 140, and a valve may be further provided between the inlet 140 and the water supply hose to control water supply.
- a filter may be further provided to filter foreign substances from supplied water.
- the inlet 140 may be connected to the water receiving unit 72 through a water supply pipe 74, and a pump 73 may be provided to forcibly transfer water from the water receiving unit 72 to the flow passage forming unit 160.
- the flow passage forming unit 160 may be integrally coupled to the nozzle 170.
- the meaning of the integral coupling may include a case where the flow passage forming unit 160 and the nozzle 170 are formed into one member by injection molding as well as a case where the flow passage forming unit 160 and the nozzle are separately formed and then form one unit or module. In either case, the location of the nozzle 170 may be determined by the fixed location of the flow passage forming unit 160.
- a typical structure in which water is held and heated in a certain container to generate steam and the steam is transferred to the nozzle through the hose has a limitation in that the steam can be condensed and the condensate water can be sprayed through the nozzle, wetting the drying subject again.
- water may be heated while flowing through the flow passage unit 160, and steam may be sprayed through the nozzle 170 formed integrally with the flow passage forming unit 160. Accordingly, it can be fundamentally prevented that steam is condensed while steam generated in the flow passage forming unit 160 is flowing to the nozzle 170.
- the water receiving unit 72 may be disposed in the drawer 71.
- a user may withdraw the drawer 71, and may supply water through a loading hole 72a.
- the flow passage forming unit 160 may include a flow passage main body 110 and a cover 120.
- the flow passage main body 110 may include a flow passage for guiding water from the inlet 140 to the outlet 121, and may have an upper portion opened.
- the cover may cover the opened upper portion of the flow passage main body 110.
- the flow passage main body 110 and the cover 120 may be integrally formed.
- the flow passage main body 110 may have the inlet 140 connected to the water supply pipe 74. Water may be introduced into the flow passage main body 110 through the inlet 140.
- the steam generating heater 130 may heat water introduced into the flow passage main body 110. Water may be heated to generate steam according to the heating action of the steam generating heater 130.
- the steam generating heater may be exposed to the flow passage in which water flows, but in this embodiment, will be exemplified as being buried in a bottom 113 of the flow passage main body 110. Since the steam generating heater 130 is not directly exposed to water, there is an advantage in that a separate insulating structure for the insulation of the steam generating heater 130 is unnecessary.
- the flow passage main body 110 may be formed of a thermal conductive material such as aluminum such that heat transfer from the steam generating heater 130 can be easily performed.
- the steam generating heater 130 may include two terminals 131 and 132 for power supply.
- the terminals 131 and 132 may outwardly protrude from the flow passage main body 110 to be electrically connected to a power supply.
- the flow passage main body 110 may form a certain space such that water can be moved to the inside.
- a plurality of flow passage forming ribs 151 and 152 may be protrusively formed on the bottom of the flow passage main body 110.
- the flow passage forming ribs 151 and 152 may form a path along which water moves, and may extend from side portions 118 and 119 of the flow passage main body 110.
- the plurality of flow passage forming ribs may include a first flow passage forming rib 151 extending from the right side portion 118 of the flow passage main body 110 and a second flow passage forming rib 152 extending from the left side portion 119 of the flow passage main body 110.
- the first flow passage forming rib 151 and the second flow passage forming rib 152 may be alternately arranged between the inlet 140 and the nozzle 170.
- the end portion of the first flow passage forming rib 151 may be spaced from the left side portion 119 by a certain gap, and the second flow passage forming rib 152 may also be spaced from the right side portion 118 by a certain gap.
- Water supplied through the inlet 140 may be guided along the plurality of flow passage forming ribs 151 and 152. The traveling direction of water may be alternately switched while flowing to the nozzle 170.
- the cover 120 may cover the flow passage main body 110, and may be formed integrally with the flow passage main body 110 or may be coupled to the flow passage main body 110 by a coupling member. In this case, airtightness may be maintained between the cover 120 and the flow passage main body 110 such that steam generated in the flow passage main body 110 is not leaked.
- the cover 120 may include a plate body 112 covering the flow passage main body 110 and a guide tube 123 extending from the outlet 121 formed in the plate body 112 and guiding steam generated in the flow passage main body 110 to the nozzle 170.
- the nozzle 170 may be coupled to the end portion of the guide tube 123.
- the flow passage main body 110 may include a plurality of coupling parts 116 and 117.
- the coupling parts 116 and 116 may have a coupling hole to which a coupling member is coupled to fix the flow passage main body 110.
- the opening direction of each coupling hole may be differently configured in consideration of various installation structures. In this embodiment, the opening directions of the coupling hole formed in the first coupling part 116 and the coupling hole formed in the second coupling part 117 may be different from each other.
- a plurality of heat transferring protrusions 155 may protrude from the bottom 113 between the first flow passage forming rib 151 and the second flow passage forming rib 152.
- the plurality of heat transferring protrusions 155 may be disposed spaced from each other.
- the bottom 113 of the flow passage main body 110 may be heated, and the flow passage forming ribs 151 and 152 and the heat transferring protrusions 155 may be together heated.
- This structure has an effect that can secure a wide heating area by heat transferred from the steam generating heater 130 and thus allow water moving between the flow passage forming ribs 151 and 152 to be quickly phase-shifted into steam.
- bottom 113 may be formed of a thermal conductive material, the heating effect by the flow passage forming ribs 151 and 152 and the heat transferring protrusions 155 may be improved.
- the structure in which the traveling direction of water is alternately switched between the flow passage forming ribs 151 and 152 may apply sufficient heat to water flowing along the flow passage. Furthermore, in consideration of the heat effect by the heat transferring protrusion 155, water may be sufficiently heated before reaching the nozzle 170. Particularly, when comparing with a case where steam is generated by heating water held in a certain place, the embodiment has an effect of significantly reducing time necessary in steam spraying because heat is applied to flowing water and thus the phase change is almost instantaneously achieved.
- the pressure may increase as water travels downstream along the traveling direction of the water flow, allowing steam to be sprayed at a high pressure through the nozzle 170.
- the spray pressure of the nozzle 170 may be further strengthened.
- the temperature at the outlet 121 or the inlet of the nozzle 170 may be maintained at about 70 degrees Celsius (hereinafter, unit of temperature is Celsius), preferably, 70 degrees or less, and the internal temperature of the drum 4 may be maintained at a temperature range from about 30 degrees to about 40 degrees.
- unit of temperature is Celsius
- the temperature of steam contacting clothing is too high, clothing may be directly damaged, and secondary contamination may occur due to a deformation of spots on clothing.
- the damage of clothing can be prevented.
- the spray pressure of the nozzle may be closely related with the diameter of the spray hole. Referring to FIG. 7 , under the same conditions except the diameter of the spray hole of the nozzle 170, when the diameter of the spray hole is greater than about 1.5 mm, water sprayed from the nozzle 170 may not hit clothing with a sufficient strength. On the other hand, when the diameter of the spray hole is smaller than about 1 mm, the amount of spray may be insufficient to treat clothing. Also, as the diameter of the spray hole decreases, the possibility of the clogging of the spray hole may increase due to scale. Accordingly, in consideration of various factors, the diameter of the spray hole of the nozzle 170 may range from about 1.5 mm to about 2 mm. In this case, the nozzle 170 may spray water of about 70 cc to about 120 cc per minute.
- downstream water may be prone to phase change due to much heat-absorbing time, and upstream water may also rapidly generate steam at a portion contacting the bottom 113, where a high temperature and pressure state is generated due to a water pressure according to the flowing of the water in addition to the steam, and a high pressure may act from upstream to downstream. Accordingly, steam finally sprayed through the nozzle may be maintained at a very high pressure, and can reach clothing in the drum 4.
- the spray apparatus 100 can generate and spray steam in a short time, time spent on the steam spray cycle can be reduced, and the power consumption can also be reduced. Also, steam can be sprayed at a high pressure.
- FIG. 6 is a view illustrating a coupling structure of a spray apparatus.
- the rear supporter 8 may have a passage hole (not shown) such that steam sprayed from the nozzle 170 can be sprayed into the drum 4.
- the nozzle 170 may be inserted into the passage hole.
- the flow passage main body 110 may directly coupled to the rear supporter 8, or may be fixedly coupled to the cabinet 30 or the back panel 34.
- the flow passage main body 110 is directly coupled to the cabinet 30 or the back panel 34, or may be coupled to the cabinet 30 or the back panel via a separate bracket.
- the spray apparatus 100 may be first fixed to the bracket 180, and then the bracket 180 may be coupled to the back panel 34.
- the back panel 34 may have an opening 34a for convenience of installation and maintenance of the spray apparatus 100, and the bracket 180 may be coupled around the opening 34a.
- FIG. 8 is a view illustrating an installation structure of a spray apparatus according to another embodiment of the present invention.
- the flow passage forming unit 160 may be disposed such that the inlet 140 is higher than the nozzle 170. After the pump 73 stops operating, residual water in the flow passage forming unit 160 may be naturally discharged through the nozzle 170. Accordingly, generation of scale and contamination due to residual water in the flow passage forming unit 160 can be prevented.
- the drying machine may perform an operation for cleaning of the flow passage forming unit 160. This cleaning operation may be performed during a cycle provided for the drying function, or may be performed by a separately additional function according to the selection of a user. When this cleaning operation is performed, water may be supplied into the flow passage forming unit 160 to discharge foreign substances such as deposits out of the nozzle 170. The location of the inlet 140 and the nozzle 170 may be determined such that all water supplied through the inlet 140 can be discharged through the nozzle 170 to always maintain the condition that residual water does not exist in the flow passage forming unit 160.
- the amount of steam sprayed from the nozzle 170 and contacting clothing in the drum 4 may be about 40% or more of the total amount of steam generated by heating of the steam generating heater 130.
- the operation temperature of the steam generating heater 130, the area of the spray hole of the nozzle 170, and the operation pressure of the pump 73 need to be appropriately determined, and particularly, the spray angle of the nozzle 170 may be determined such that steam can be sprayed at an angle of about 30 degrees to about 60 degrees with respect to the horizontal plane.
- Steam sprayed through the nozzle 170 needs to contact clothing. Steam sprayed from the nozzle 170 may reach the lowermost portion of the drum 4 such that steam can be applied to clothing regardless of the amount of clothing loaded in the drum 4.
- FIG. 9 is a view illustrating a spray apparatus according to still another embodiment of the present invention.
- FIG. 10 is a cross-sectional view illustrating a portion A of FIG. 9 .
- a spray apparatus 200 may include a flow passage forming unit 660 and a nozzle 670 like the above-described embodiments. Also, although indicated as different reference numerals, a flow passage main body, a cover 620, a steam generating heater 630, a left side portion 619, and a right side portion 618 will follow the description of the previous embodiments. Accordingly, the description of this embodiment will be focused on differences from the previous embodiments.
- the flow passage forming unit 660 may include a plurality of flow passage forming ribs 611 and 612 protruding from the bottom 613, and may be divided into both spaces based on one of the flow passage forming ribs 611 and 612. Also, the flow passage forming unit 660 may have a gap for movement of water at an upper side of the flow passage forming rib 612 such that water can overflow the flow passage forming rib 612 while traveling from one of the both spaces pertaining to upstream side to the other space pertaining to downstream side. In order to provide the gap for the movement of water, a gap forming section 625 may be formed in the cover 620. In the gap forming section 625, the inner side surface of the cover 620 may be spaced from the flow passage forming rib 612.
- An impactor 690 may be provided in the flow passage forming unit 660, and may extend from the flow passage forming rib 612. The impactor 690 may protrude in plurality toward the space pertaining to the upstream side among the both spaces based on the flow of water.
- the impactor 690 may be formed at a location corresponding to the gap forming section 625. Water flowing in the flow passage forming unit may be hit by the impactor 690 at the space pertaining to the upstream side of the both spaces divided by the flow passage forming rib 612, and then may travel to the space pertaining to the downstream side through the gap forming section 625. When this process is continuously repeated, scale may be mainly generated among the impactors 691, 692 and 693. Accordingly, the spray hole of the nozzle 670 can be prevented from clogging.
- the impactor 690 may be formed at a plurality of locations, particularly, at sections where the flow direction is switched.
- the flow passage forming rib may be partially cut such that the water flow can travel even though the gap forming section 625 is not formed at a section where the impactor 690 is not installed among the sections where the flow direction is switched.
- the spray apparatus 600 may be configured such that the inlet 640 is disposed over the nozzle 670. Similarly to the embodiment described with reference to FIG. 8 , this structure is advantageous to discharging of residual water in the flow passage forming unit 660.
- FIG. 11 is a view illustrating a nozzle according to an embodiment of the present invention.
- a spray apparatus may include a nozzle varying in the area of the spray hole according to the water pressure.
- This nozzle can be implemented in various types. It will be noted that a nozzle 270 exemplified herein can be applied to any one of the spray apparatus described in the previous embodiments.
- the nozzle 270 may be formed of a deformable material.
- the nozzle 270, particularly, the spray hole may be deformed according to the spray pressure.
- scale is generated around the spray hole, since the area of the spray hole varies, a spray amount of a certain level or more can be secured, and foreign substances in the flow passage forming units 160 and 660 can also be discharged to the outside.
- the spray hole of the nozzle 270 may be formed to be cut along the edge thereof multiple times. As the cut portions spread out according to the spray pressure, the diameter of the spray hole of the nozzle 270 may increase.
- FIGS. 12A and 12B are perspective views illustrating a clothing stand.
- a clothing stand 300 may allow clothing to be placed thereon when clothing is washed through the spray apparatus 100 and 600.
- the meaning of washing is a process of removing contaminants by applying steam clothing through the spray apparatus 100 and 600 unlike a washing cycle or operation performed by a typical washing machine. Since steam is used, the amount of water required for washing is smaller than that required for typical washing. Accordingly, washing is more efficient, and local contaminants such as spots on clothing can be conveniently removed. Particularly, it is possible to install the spray apparatus 100 and 600 in a typical drying machine to provide a washing function.
- the clothing stand 300 may include a base 310 and a support plate 340.
- the support plate 340 may be pivotably disposed in the base 310, and may adjust the contaminated part of clothing so as to face the spray direction of the nozzle 170.
- a user may place clothing on the clothing stand such that the contaminated part is located on the support plate 340, and then may adjust the angle of the support plate 340 so as to face the nozzle 170 such that steam sprayed through the nozzle 170 accurately reaches the contaminated part.
- the maximum pivotable angle of the support plate 340 may be set corresponding to the spray direction of the nozzle 170.
- the clothing stand 300 may be detachably disposed in the drum 4 such that a user can arbitrarily attach or detach the clothing stand 300 only when necessary.
- the laundry stand 300 may be detachably disposed in the drum 4 such that a user can arbitrarily attach or detach the clothing stand 300 only when necessary.
- FIG. 13 is a view illustrating a procedure of a laundry treatment method according to an embodiment of the present invention and a control relationship among components of each part of a laundry treatment machine during the procedure.
- FIG. 14 is a graph illustrating a comparison between an internal temperature T1 of a drum and a temperature T2 at an inlet of a nozzle while spraying is being performed from a spray apparatus.
- a laundry treatment method according to an embodiment of the present invention will be described with reference to FIGS. 13 and 14 .
- the laundry treatment method may include a cleaning liquid treatment process S10 in which a solution comprising a detergent is sprayed to laundry, a cleaning liquid infiltration process S20 of waiting for a certain time such that the sprayed solution can be absorbed into laundry, and a steam spraying process S30 in which steam generated by applying heat to flowing water is sprayed to laundry.
- the cleaning liquid treatment process S10 may be performed by the spray apparatus 100 and 600 as described in the previous embodiments.
- the pump 73 may operate, but the steam generating heater 130 may stop operating.
- the water supply pipe 74 may be connected to the spray apparatus 100 and 600 via a detergent receiving unit containing detergent.
- a detergent supply unit (not shown) for directly supplying a cleaning liquid to the spray apparatus 100 and 600 may be further provided.
- a user may directly load detergent into the water receiving unit 72.
- detergent and water contained in the water receiving unit 72 may be spent in the cleaning liquid treatment process S10.
- water needs to be again supplied to the water receiving unit 72.
- a water receiving unit holding water necessary for steam generation and a detergent receiving unit holding liquid or power detergent may be separately provided.
- spraying may be performed through the same spray apparatus 100 and 600.
- detergent contained in the detergent receiving unit together with water contained in the water receiving unit may be supplied to the spray apparatus 100 and 600 in the cleaning liquid treatment process S10.
- water contained in the water receiving unit may be supplied, but the detergent supply from the detergent receiving unit needs to be cut off.
- the flow passage may be configured such that water can be supplied to the spray apparatus 100 and 600 via the detergent receiving unit for holding liquid or powder detergent, and in both cleaning liquid treatment process S10 and steam spraying process S30, spraying may also be performed using water supplied through the flow passage.
- the cleaning liquid treatment process S10 the total amount of detergent held in the detergent receiving unit may be supplied and sprayed to the spray apparatus 100 and 600 together with water. Accordingly, in the subsequent steam spraying process S30, even though water passing the detergent receiving unit like the cleaning liquid treatment process S10 is supplied to the spray apparatus 100 and 600, water in which detergent is not dissolved may be supplied, and water sprayed through the nozzles 170 and 270 may also not contain detergent dissolved.
- the cleaning liquid treatment process S10 may further include blowing air into a space (e.g., drum 4) where laundry is held during the spraying of steam.
- a space e.g., drum 4
- the pump 73 may operate (ON), but the steam generating heater 130 may stop operating (OFF).
- the heater is turned off during steam injection in order to prevent an overheating.
- the blower 22 may operate upon the blowing of air.
- the cleaning liquid treatment process S10 may spend about 0.5 minutes to several minutes.
- the spray angle of the nozzles 170 and 270 may range from about 30 degrees to about 60 degrees with respect to the horizontal plane such that laundry in the drum 4 can be evenly wetted by cleaning liquid sprayed through the spray apparatus 100 and 600.
- the cleaning liquid may infiltrate into laundry.
- cleaning liquid may not be further sprayed (pump 73 is turned off), the drying heater 42 and the blower 22 may stop operating so as to maintain the wet state of laundry.
- the cleaning liquid infiltration process S20 may spend about 1 minute to about 4 minutes.
- laundry treated by cleaning liquid may be washed and rinsed.
- Spraying of steam may be performed through the spray apparatus 100 and 600.
- Contaminants may be removed from laundry by a physical force of water sprayed from the spray apparatus 100 and 600 and a chemical action of detergent dissolved in water.
- contaminants may be more easily removed because detergent is sufficiently absorbed into laundry.
- Spraying needs to be performed for a sufficient time, preferably, about 0.5 minutes to about several minutes such that cleaning liquid can be removed from laundry, but the embodiments are not limited thereto.
- the spray time can be set longer such that more amount can be sprayed than in the cleaning liquid treatment process S10.
- the drying heater 42 may operate to maintain or increase the internal temperature of the drum 4 in addition to the operation of the pump 73 and the steam generating heater 130 (but, when spraying is performed by its own water pressure of the water supply source that supplies water to the spray apparatus 100 and 600, the pump 73 can be omitted). Air heated by the drying heater 42 may be blown into the drum 4 by the blower 22. In the cleaning liquid infiltration process S20, the dropped internal temperature of the drum 4 may rise to a certain level again.
- the temperature of steam sprayed through the spray apparatus 100 and 600 may be maintained at about 70 degrees Celsius (hereinafter, unit of temperature is Celsius), preferably, 70 degrees or less at the inlet of the nozzle 170, and the internal temperature of the drum 4 may be maintained at a temperature range from about 30 degrees to about 40 degrees.
- the internal temperature of the drum 4 may be always maintained at a temperature range from about 30 degrees to about 40 degrees during the cleaning liquid treatment process S10, the cleaning liquid infiltration process S20, and the steam spraying process S30.
- a temperature sensor (not shown) for sensing the temperature of the drum 4 may be provided.
- the controller 41 may control the operation of the pump 73, the steam generating heater 130, the drying heater 42, and/or the blower 22 such that the internal temperature of the drum 4 ranges from about 30 degrees to about 40 degrees according to a sensed value of the temperature sensor.
- the amount of sprayed water reaching laundry among water sprayed by the spray apparatus 100 and 600 may be 40% or more of the total amount of steam generated by the steam generating heater 130.
- water sprayed through the spray apparatus 100 and 600 may form an angle of about 30 degrees to about 60 degrees with respect to the horizontal plane.
- clothing such as wool, hemp fiber, polyester, and nylon is washed at a temperature of about 40 degrees or less, and acetate and silk is washed at a temperature of about 35 degrees or less.
- acryl, denim, rayon is washed at a temperature of about 27 degrees to about 32 degrees and duck down is washed at a temperature of about 38 degrees to about 43 degrees.
- various kinds of contamination sources may be treated by cleaning liquid sprayed in the cleaning liquid treatment process S10, and cleaning liquid may deeply infiltrated into laundry in the cleaning liquid infiltration process S20.
- contamination sources may be more easily removed by a soaking action and an activating action.
- high-pressure steam sprayed to laundry may allow the contamination sources to be removed or separated from laundry.
- steam sprayed in the steam spraying process S30 directly contacts laundry, since steam is applied to laundry sufficiently wetted through the cleaning liquid treatment process S10 and the cleaning liquid infiltration process S20, the contamination sources stained on laundry may be prevented from being denaturalized or coagulated.
- fatty contaminants may be activated by a chemical action of detergent, thereby facilitating removal of contaminants.
- steam sprayed in the steam spraying process S30 may serve to effectively remove water-soluble contaminants in consideration of the spray pressure and the temperature of steam, as well as the fatty contaminants.
- the laundry treatment method according to the embodiment of the present invention can effectively remove water-soluble contaminants as well as fatty contaminants, as well as prevent denaturalization and coagulation regardless of the types of contaminants.
- Water sprayed through the spray apparatus 100 and 600 in the steam spraying process S30 may be in a state where steam and cleaning liquid of a droplet state are mixed, which provides advantages in terms of increase of the spray pressure, increase of the spray distance, and securement of the amount of water for treating contamination of laundry.
- a drying process S40 may include drying laundry washed or rinsed through the steam spraying process S30. Spraying through the spray apparatus 100 and 600 may be stopped, and cool air or hot air may be blown into the drum 4.
- the blower 22 may operate for the air blowing, and particularly, the drying heater 42 may operate for quick drying.
- the drying process S40 may spend about 5minutes to about 10 minutes.
- the steam spraying process S30 and the drying process S40 may be repeatedly performed. In this case, the repetition of rinsing and drying of laundry may enable effective removal of residual detergent on laundry.
- a temperature reducing process S50 may include reducing the internal temperature of the drum 4 after the drying process S40.
- hot air may be together discharged.
- the internal temperature of the drum 4 may be reduced.
- Spraying through the spray apparatus 100 and 600 may be in a stopped state, and the blower 22 may operate. In this case, the operation of the drying heater 42 may be stopped.
- the temperature reducing process S50 may be finished within about 1 minute.
- the pump 73, the steam generating heater 130, the blower 22, and the drying heater 42 may not operate throughout the corresponding process, but may intermittently operate by the control of the controller 41.
- the operation and the operation stop may be repeated at a certain time interval, or may be controlled according to a predetermined temperature or flow rate based on measured values of a sensing unit such as a temperature sensor (not shown) or a flow rate sensor (not shown).
- the laundry treatment method according to the embodiment of the present invention can remove contaminants stained on laundry through steam spraying. Particularly, it is possible to simply remove spots locally stained on laundry. Also, this method has an effect of reducing time, power, and water necessary for treatment of laundry.
- the laundry treatment method uses hot steam to treat laundry, the coagulation and denaturalization of contaminants can be prevented regardless of the types of contaminants. Also, sufficient washing performance can be secured with respect to all of water-soluble and fatty contaminants.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Treatment Of Fiber Materials (AREA)
- Control Of Washing Machine And Dryer (AREA)
Description
- The present invention relates to a laundry treatment method and an apparatus.
- Generally, examples of laundry treatment machines include washing machines, drying machines, and drying & washing machines.
- A washing machine is an apparatus that performs washing, rinsing, and spinning cycles to remove contaminants from laundry such as clothing and bedding using water, detergent, and mechanical action. The washing machines are classified into a top-loading type in which a drum holding laundry rotates about a vertical axis, and a front-loading type in which the drum rotates about a horizontal axis.
- A drying machine, which is an apparatus that dries a drying subject with hot air, dries the drying subject loaded into the drum with hot air or cool air.
- The washing & drying machine, which is an apparatus having a drying function as well as a washing function, receives laundry such as clothing in the rotating drum and performs a washing or drying cycle according to a mode selected by a user.
- These laundry treatment machines may include a steam supply unit for supplying steam into the drum. A typical steam supply unit holds water in a certain container, heats water in the container to generate steam, and then transfers the generated steam to a spray nozzle through a hose. However, during the transfer through the hose, the steam can be condensed. Accordingly, laundry that is already dried may be again wetted by water sprayed together with the steam through the steam nozzle. Also, a typical spray apparatus has a limitation in securing a desired performance because the sprayed steam cannot reach clothing due to a low steam spray pressure.
- Meanwhile, the steam supply unit in the typical laundry treatment machine is used to sterilize laundry or unwrinkle laundry, but is inappropriate to remove contaminants from laundry. Accordingly, hand-washing is additionally needed to remove local stains on laundry, or a washing machine needs to be operated, which is very inconvenient and makes excessive time, water, and power inefficiently consumed.
-
WO 2008/030051 relates to an operation method of a washing machine including performing a primary rinsing operation, a steam washing operation and a main washing operation. - The present invention provides a laundry treatment method that removes contaminants from laundry with steam.
- The present invention also provides a laundry treatment method that can easily remove local spots from laundry.
- The present invention also provides a laundry treatment method that can reduce the laundry treatment time and the power consumption.
- The present invention also provides a laundry treatment method that can secure sufficient performance regardless of the type of contaminant.
- The present invention also provides a laundry treatment method that can secure sufficient performance for both of water-soluble and fatty contaminants.
- The present invention also provides a laundry treatment apparatus.
- According to an aspect of the present invention, there is provided a laundry treatment method using a steam spraying apparatus comprising: spraying a cleaning liquid with a pre-mixed detergent onto laundry contained in a space for holding laundry; waiting for a certain time interval such that the sprayed cleaning liquid is absorbed into laundry; and spraying steam to laundry, the steam being generated by applying heat to flowing water to the detergent-absorbed laundry, wherein the spraying of the cleaning liquid and the spraying of the steam are performed using the same nozzle..
- The spraying of the cleaning liquid may further include blowing air into a space holding laundry during the spraying of the cleaning liquid.
- The spraying of the cleaning liquid may include spraying steam at a spray angle of about 30 degrees to about 60 degrees.
- The spraying of the steam may be performed such that the steam directly contacts laundry.
- An amount of the steam contacting laundry may be about 40% or more of a total amount of the steam generated by heating.
- In the spraying of the steam, an internal temperature of a space holding laundry may be maintained at a temperature of about 35 degrees Celsius to about 40 degrees Celsius.
- The spraying of the steam may be performed together with heating for generating the steam.
- In the spraying of the steam, a spray rate of the steam may range from about 70 cc per minute to about 120 cc per minute.
- The certain time interval may range from about 1 minute to about 4 minutes, preferably depending on the density of the detergent used.
- The spraying of the steam may include blowing hot air into the space holding laundry. The laundry treatment method may further include drying laundry after the spraying of the steam.
- The drying of laundry may include blowing hot air into the space holding laundry.
- The drying of laundry may include blowing hot air for about 5 minutes to about 10 minutes.
- The spraying of the steam and the drying of laundry may be repeatedly performed.
- The laundry treatment method may further include reducing a temperature by waiting for a certain time such that laundry is cooled after the drying of laundry.
- The reducing of the temperature may include blowing cool air into the space holding laundry.
- In the reducing of the temperature, a time during which cool air is blown into the space may be within about 1 minute.
- The spraying of the cleaning liquid may include receiving a detergent from a detergent receiving unit storing the detergent to perform the spraying.
- The spraying of the cleaning liquid and the spraying of the steam may be performed using the same nozzle, and in the spraying of the steam, a detergent supply from the detergent receiving unit to the nozzle may be stopped.
- In the spraying of the cleaning liquid and the spraying of the steam, water may be supplied to the same nozzle via the detergent receiving unit holding the detergent, and in the spraying of the cleaning liquid, a total amount of the detergent held in the detergent receiving unit may be supplied to the nozzle.
- According to a further aspect, the invention provides a laundry treatment apparatus, comprising: a drum for receiving clothing, being rotatably disposed in a casing; a steam spraying apparatus for generating and spraying steam into the drum; and a water supply pipe for supplying water into the steam spraying apparatus, wherein the steam spraying apparatus includes a nozzle configured for spraying cleaning liquid with pre-mixed detergent and steam therethrough.
- The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
- Embodiments will be described in detail with reference to the following drawings in which like reference numerals refer to like elements, and wherein:
-
FIG. 1 is a perspective view illustrating a drying machine according to an embodiment of the present invention; -
FIG. 2 is a cross-sectional view taken along line A-A ofFIG. 1 ; -
FIG. 3 is an exploded perspective view illustrating a drying machine according to an embodiment of the present invention; -
FIG. 4 is a perspective view illustrating the inside of a drying machine including a spray apparatus; -
FIG. 5A is a perspective view of a spray apparatus; -
FIG. 5B is a view illustrating a flow passage forming part of a spray apparatus; -
FIG. 5C is a cross-sectional view taken along line B-B ofFIG. 5B ; -
FIG. 6 is a view illustrating a coupling structure of a spray apparatus; -
FIG. 7 is a graph illustrating a spray pressure according to a spray diameter of a nozzle; -
FIG. 8 is a view illustrating an installation structure of a spray apparatus according to another embodiment of the present invention; -
FIG. 9 is a view illustrating a spray apparatus according to still another embodiment of the present invention; -
FIG. 10 is a cross-sectional view illustrating a portion A ofFIG. 9 ; -
FIG. 11 is a view illustrating a nozzle according to an embodiment of the present invention; -
FIGS. 12A and12B are perspective views illustrating a clothing stand; -
FIG. 13 is a view illustrating a procedure of a laundry treatment method according to an embodiment of the present invention and a control relationship among components of each part of a laundry treatment machine during the procedure; and -
FIG. 14 is a graph illustrating a comparison between an internal temperature T1 of a drum and a temperature at an inlet of a nozzle while spraying is being performed from a spray apparatus. - The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like components.
- Hereinafter, a drying machine among laundry treatment machines will be exemplified, but embodiments are not limited thereto. For example, a laundry treatment method according to an embodiment of the present invention can be applied to other laundry treatment machines such as washing machines with a steam spraying function or washing & drying machines within the scope of the present invention.
-
FIG. 1 is a perspective view illustrating a drying machine according to an embodiment of the present invention.FIG. 2 is a cross-sectional view taken along line A-A ofFIG. 1 .FIG. 3 is an exploded perspective view illustrating a drying machine according to an embodiment of the present invention. - Referring to
FIGS. 1 to 3 , a dryingmachine 1 according to an embodiment of the present invention may include a casing defining the exterior thereof and adrum 4 rotatably disposed in the casing and receiving laundry such as clothing. Alifter 6 may be provided on the inner circumferential surface of thedrum 4 to tumble clothing according to the rotation of thedrum 4. - The casing may include a
cabinet 30, acabinet cover 32, acontrol panel 40, aback panel 34, atop plate 36, and a base 38. Thecabinet cover 32 may be mounted on the front side of thecabinet 30 and may have a clothing loading hole at the center thereof. Thecontrol panel 40 may be provided at an upper side of thecabinet cover 32. Theback panel 34 may be mounted on the rear side of thecabinet 30 and may have anair hole 34h that allows air to flow in and out of thecabinet 30. Thetop plate 36 may cover the upper portion of thecabinet 30. The base 38 may be mounted under thecabinet 30. Adoor 28 may be pivotably coupled to thecabinet cover 32 to open or close the clothing loading hole. - The
control panel 40 may include an input unit such as buttons or dials, a display unit such as LCD and LED, and a controller 41. The input unit may receive various kinds of control commands related to the operation of the drying machine from a user. The display unit may visually display the operation state of the drying machine. Also, the controller 41 may be disposed on the rear surface of thecontrol panel 40 to control the overall operation of the drying machine. - In an embodiment, the
cabinet 30 may include awater receiving unit 72 that supplies water to aspray apparatus 100. For this, adrawer 71 may be withdrawably supported by thecabinet 30, and awater receiving unit 72 may be held in thedrawer 71. - A
front support 10 and arear support 8 may be disposed at the front portion and the rear portion in the casing. The front portion and the rear portion of thedrum 4 may be supported by thefront support 10 and therear support 8, respectively. - The central portion of the
front support 10 may have anopening 50 communicating with the clothing loading hole. Also, a ring-shapedfront supporting protrusion 54 may be formed on the rear surface of thefront support 10 to support the front end of thedrum 4. Also, afront guide roller 56 may be rotatably disposed at a lower portion of thefront support 10. The inner circumferential surface of the front end of thedrum 4 may be supported by thefront supporting protrusion 54, and the outer circumferential surface thereof may be supported by thefront guide roller 56. - A ring-shaped
rear supporting protrusion 60 may be formed on the front surface of therear support 8 to support the rear end of thedrum 4, and arear guide roller 64 may be rotatably disposed at the lower portion of the front surface thereof. The inner circumferential surface of the rear end of thedrum 4 may be supported by therear supporting protrusion 60, and the outer circumferential surface thereof may be supported by therear guide roller 64. - A drying
heater 42 may be disposed under thedrum 4. A dryingduct 14 communicating between therear support 8 and the dryingheater 42 may be disposed such that air heated by the dryingheater 42 can be supplied into thedrum 4. Alint duct 16 may be disposed on thefront support 10 such that air passing thedrum 4 can flow therein. - The drying
duct 14 may have a plurality of passage holes 144 such that air can be discharged into thedrum 4. Due to a blowing force according to the operation of theblower 22, air may flow along thelint duct 16, theblower 22, and adischarge duct 20. Particularly, during the air flowing, air heated by the dryingheater 42 may flow along the dryingduct 14, and then may be discharged into thedrum 4 through thepassage hole 144. - Also, air introduced into the
lint duct 16 may be purified by afilter 18. Thedischarge duct 20 may be disposed at the rear surface of the casing such that air inside theline duct 16 can be guided to the outside of the casing. - The
blower 22 may be disposed between thedischarge duct 20 and thelint duct 16. Also, amotor 24 may be provided to generate a driving force of theblower 22 and thedrum 4, and apower transmission belt 26 may be provided to rotate the drum through the driving force of themotor 24. -
FIG. 4 is a perspective view illustrating the inside of a drying machine including aspray apparatus 100.FIG. 5A is a perspective view of a spray apparatus.FIG. 5B is a view illustrating a flow passage forming part of a spray apparatus.FIG. 5C is a cross-sectional view taken along line B-B ofFIG. 5B . - Referring to
FIGS. 4 and5 , thespray apparatus 100 may spray water into thedrum 4. Thespray apparatus 100 may include a flowpassage forming part 160 and asteam generating heater 130, and anozzle 170. The flowpassage forming part 160 may have a flow passage that guides water introduced through theinlet 140 to anoutlet 121. Thesteam generating heater 130 may apply heat to water flowing along the flow passage in the flowpassage forming part 160. Thenozzle 170 may spray steam generated by thesteam generating heater 130. Thenozzle 170 may spray the steam at a certain pressure. The pressure of the injected steam is preferably within a range of 0.2 to 0.4 bars above atmospheric pressure. - Although it will be described in this embodiment that the
water receiving unit 72 is separately provided, the flowpassage forming unit 160 may be directly supplied with water from an external water resource such as a faucet. In this case, a water supply hose connected to the external water resource may be connected to theinlet 140, and a valve may be further provided between theinlet 140 and the water supply hose to control water supply. A filter may be further provided to filter foreign substances from supplied water. - In this embodiment, the
inlet 140 may be connected to thewater receiving unit 72 through awater supply pipe 74, and apump 73 may be provided to forcibly transfer water from thewater receiving unit 72 to the flowpassage forming unit 160. - The flow
passage forming unit 160 may be integrally coupled to thenozzle 170. Here, the meaning of the integral coupling may include a case where the flowpassage forming unit 160 and thenozzle 170 are formed into one member by injection molding as well as a case where the flowpassage forming unit 160 and the nozzle are separately formed and then form one unit or module. In either case, the location of thenozzle 170 may be determined by the fixed location of the flowpassage forming unit 160. - A typical structure in which water is held and heated in a certain container to generate steam and the steam is transferred to the nozzle through the hose has a limitation in that the steam can be condensed and the condensate water can be sprayed through the nozzle, wetting the drying subject again. However, according to an embodiment of the present invention, water may be heated while flowing through the
flow passage unit 160, and steam may be sprayed through thenozzle 170 formed integrally with the flowpassage forming unit 160. Accordingly, it can be fundamentally prevented that steam is condensed while steam generated in the flowpassage forming unit 160 is flowing to thenozzle 170. - The
water receiving unit 72 may be disposed in thedrawer 71. A user may withdraw thedrawer 71, and may supply water through aloading hole 72a. Particularly, in case of a drying machine miniaturized in consideration of mobility, it is advantageous to receive water through thewater receiving unit 72 rather than receive water from an external water source. - The flow
passage forming unit 160 may include a flow passagemain body 110 and acover 120. The flow passagemain body 110 may include a flow passage for guiding water from theinlet 140 to theoutlet 121, and may have an upper portion opened. The cover may cover the opened upper portion of the flow passagemain body 110. According to an embodiment, the flow passagemain body 110 and thecover 120 may be integrally formed. The flow passagemain body 110 may have theinlet 140 connected to thewater supply pipe 74. Water may be introduced into the flow passagemain body 110 through theinlet 140. - The
steam generating heater 130 may heat water introduced into the flow passagemain body 110. Water may be heated to generate steam according to the heating action of thesteam generating heater 130. The steam generating heater may be exposed to the flow passage in which water flows, but in this embodiment, will be exemplified as being buried in abottom 113 of the flow passagemain body 110. Since thesteam generating heater 130 is not directly exposed to water, there is an advantage in that a separate insulating structure for the insulation of thesteam generating heater 130 is unnecessary. The flow passagemain body 110 may be formed of a thermal conductive material such as aluminum such that heat transfer from thesteam generating heater 130 can be easily performed. - The
steam generating heater 130 may include twoterminals terminals main body 110 to be electrically connected to a power supply. - The flow passage
main body 110 may form a certain space such that water can be moved to the inside. A plurality of flowpassage forming ribs main body 110. The flowpassage forming ribs side portions main body 110. - The plurality of flow passage forming ribs may include a first flow
passage forming rib 151 extending from theright side portion 118 of the flow passagemain body 110 and a second flowpassage forming rib 152 extending from theleft side portion 119 of the flow passagemain body 110. The first flowpassage forming rib 151 and the second flowpassage forming rib 152 may be alternately arranged between theinlet 140 and thenozzle 170. - The end portion of the first flow
passage forming rib 151 may be spaced from theleft side portion 119 by a certain gap, and the second flowpassage forming rib 152 may also be spaced from theright side portion 118 by a certain gap. Water supplied through theinlet 140 may be guided along the plurality of flowpassage forming ribs nozzle 170. - The
cover 120 may cover the flow passagemain body 110, and may be formed integrally with the flow passagemain body 110 or may be coupled to the flow passagemain body 110 by a coupling member. In this case, airtightness may be maintained between thecover 120 and the flow passagemain body 110 such that steam generated in the flow passagemain body 110 is not leaked. - The
cover 120 may include a plate body 112 covering the flow passagemain body 110 and aguide tube 123 extending from theoutlet 121 formed in the plate body 112 and guiding steam generated in the flow passagemain body 110 to thenozzle 170. Thenozzle 170 may be coupled to the end portion of theguide tube 123. - The flow passage
main body 110 may include a plurality ofcoupling parts coupling parts main body 110. The opening direction of each coupling hole may be differently configured in consideration of various installation structures. In this embodiment, the opening directions of the coupling hole formed in thefirst coupling part 116 and the coupling hole formed in thesecond coupling part 117 may be different from each other. - A plurality of
heat transferring protrusions 155 may protrude from the bottom 113 between the first flowpassage forming rib 151 and the second flowpassage forming rib 152. The plurality ofheat transferring protrusions 155 may be disposed spaced from each other. Upon heating of thesteam generating heater 130, thebottom 113 of the flow passagemain body 110 may be heated, and the flowpassage forming ribs heat transferring protrusions 155 may be together heated. This structure has an effect that can secure a wide heating area by heat transferred from thesteam generating heater 130 and thus allow water moving between the flowpassage forming ribs main body 110, particularly, bottom 113 may be formed of a thermal conductive material, the heating effect by the flowpassage forming ribs heat transferring protrusions 155 may be improved. - The structure in which the traveling direction of water is alternately switched between the flow
passage forming ribs heat transferring protrusion 155, water may be sufficiently heated before reaching thenozzle 170. Particularly, when comparing with a case where steam is generated by heating water held in a certain place, the embodiment has an effect of significantly reducing time necessary in steam spraying because heat is applied to flowing water and thus the phase change is almost instantaneously achieved. - Also, since water is heated while flowing along the flow passage formed in the flow
passage forming unit 160, the pressure may increase as water travels downstream along the traveling direction of the water flow, allowing steam to be sprayed at a high pressure through thenozzle 170. Particularly, in addition to the increasing pressure by the steam at theoutlet 121, since the pressure of the water flow is added according to the flow of the water to theoutlet 121, the spray pressure of thenozzle 170 may be further strengthened. - During the spraying through the
nozzle 170, the temperature at theoutlet 121 or the inlet of thenozzle 170 may be maintained at about 70 degrees Celsius (hereinafter, unit of temperature is Celsius), preferably, 70 degrees or less, and the internal temperature of thedrum 4 may be maintained at a temperature range from about 30 degrees to about 40 degrees. When the temperature of steam contacting clothing is too high, clothing may be directly damaged, and secondary contamination may occur due to a deformation of spots on clothing. However, in this embodiment, since steam is sprayed at a certain pressure or more through thenozzle 170 and the temperature of steam contacting clothing is about 70 degrees or less, the damage of clothing can be prevented. - The spray pressure of the nozzle may be closely related with the diameter of the spray hole. Referring to
FIG. 7 , under the same conditions except the diameter of the spray hole of thenozzle 170, when the diameter of the spray hole is greater than about 1.5 mm, water sprayed from thenozzle 170 may not hit clothing with a sufficient strength. On the other hand, when the diameter of the spray hole is smaller than about 1 mm, the amount of spray may be insufficient to treat clothing. Also, as the diameter of the spray hole decreases, the possibility of the clogging of the spray hole may increase due to scale. Accordingly, in consideration of various factors, the diameter of the spray hole of thenozzle 170 may range from about 1.5 mm to about 2 mm. In this case, thenozzle 170 may spray water of about 70 cc to about 120 cc per minute. - Also, since water keeps absorbing heat while flowing along a narrow flow passage defined as a gap between the flow
passage forming ribs inlet 140 to thenozzle 170, downstream water may be prone to phase change due to much heat-absorbing time, and upstream water may also rapidly generate steam at a portion contacting the bottom 113, where a high temperature and pressure state is generated due to a water pressure according to the flowing of the water in addition to the steam, and a high pressure may act from upstream to downstream. Accordingly, steam finally sprayed through the nozzle may be maintained at a very high pressure, and can reach clothing in thedrum 4. - That is, since the
spray apparatus 100 can generate and spray steam in a short time, time spent on the steam spray cycle can be reduced, and the power consumption can also be reduced. Also, steam can be sprayed at a high pressure. -
FIG. 6 is a view illustrating a coupling structure of a spray apparatus. Referring toFIG. 6 , therear supporter 8 may have a passage hole (not shown) such that steam sprayed from thenozzle 170 can be sprayed into thedrum 4. Thenozzle 170 may be inserted into the passage hole. - When considering the structure for fixing the
steam generating unit 100, the flow passagemain body 110 may directly coupled to therear supporter 8, or may be fixedly coupled to thecabinet 30 or theback panel 34. In this case, the flow passagemain body 110 is directly coupled to thecabinet 30 or theback panel 34, or may be coupled to thecabinet 30 or the back panel via a separate bracket. In this embodiment, thespray apparatus 100 may be first fixed to thebracket 180, and then thebracket 180 may be coupled to theback panel 34. - The
back panel 34 may have anopening 34a for convenience of installation and maintenance of thespray apparatus 100, and thebracket 180 may be coupled around theopening 34a. -
FIG. 8 is a view illustrating an installation structure of a spray apparatus according to another embodiment of the present invention. - Referring to
FIG. 8 , the flowpassage forming unit 160 may be disposed such that theinlet 140 is higher than thenozzle 170. After thepump 73 stops operating, residual water in the flowpassage forming unit 160 may be naturally discharged through thenozzle 170. Accordingly, generation of scale and contamination due to residual water in the flowpassage forming unit 160 can be prevented. According to an embodiment, the drying machine may perform an operation for cleaning of the flowpassage forming unit 160. This cleaning operation may be performed during a cycle provided for the drying function, or may be performed by a separately additional function according to the selection of a user. When this cleaning operation is performed, water may be supplied into the flowpassage forming unit 160 to discharge foreign substances such as deposits out of thenozzle 170. The location of theinlet 140 and thenozzle 170 may be determined such that all water supplied through theinlet 140 can be discharged through thenozzle 170 to always maintain the condition that residual water does not exist in the flowpassage forming unit 160. - Meanwhile, the amount of steam sprayed from the
nozzle 170 and contacting clothing in thedrum 4 may be about 40% or more of the total amount of steam generated by heating of thesteam generating heater 130. For this, the operation temperature of thesteam generating heater 130, the area of the spray hole of thenozzle 170, and the operation pressure of thepump 73 need to be appropriately determined, and particularly, the spray angle of thenozzle 170 may be determined such that steam can be sprayed at an angle of about 30 degrees to about 60 degrees with respect to the horizontal plane. - Steam sprayed through the
nozzle 170 needs to contact clothing. Steam sprayed from thenozzle 170 may reach the lowermost portion of thedrum 4 such that steam can be applied to clothing regardless of the amount of clothing loaded in thedrum 4. -
FIG. 9 is a view illustrating a spray apparatus according to still another embodiment of the present invention.FIG. 10 is a cross-sectional view illustrating a portion A ofFIG. 9 . - Referring to
FIGS. 9 and 10 , a spray apparatus 200 according this embodiment may include a flowpassage forming unit 660 and anozzle 670 like the above-described embodiments. Also, although indicated as different reference numerals, a flow passage main body, acover 620, asteam generating heater 630, aleft side portion 619, and aright side portion 618 will follow the description of the previous embodiments. Accordingly, the description of this embodiment will be focused on differences from the previous embodiments. - In this embodiment, the flow
passage forming unit 660 may include a plurality of flowpassage forming ribs passage forming ribs passage forming unit 660 may have a gap for movement of water at an upper side of the flowpassage forming rib 612 such that water can overflow the flowpassage forming rib 612 while traveling from one of the both spaces pertaining to upstream side to the other space pertaining to downstream side. In order to provide the gap for the movement of water, agap forming section 625 may be formed in thecover 620. In thegap forming section 625, the inner side surface of thecover 620 may be spaced from the flowpassage forming rib 612. - An
impactor 690 may be provided in the flowpassage forming unit 660, and may extend from the flowpassage forming rib 612. Theimpactor 690 may protrude in plurality toward the space pertaining to the upstream side among the both spaces based on the flow of water. - The
impactor 690 may be formed at a location corresponding to thegap forming section 625. Water flowing in the flow passage forming unit may be hit by theimpactor 690 at the space pertaining to the upstream side of the both spaces divided by the flowpassage forming rib 612, and then may travel to the space pertaining to the downstream side through thegap forming section 625. When this process is continuously repeated, scale may be mainly generated among theimpactors nozzle 670 can be prevented from clogging. - The
impactor 690 may be formed at a plurality of locations, particularly, at sections where the flow direction is switched. The flow passage forming rib may be partially cut such that the water flow can travel even though thegap forming section 625 is not formed at a section where theimpactor 690 is not installed among the sections where the flow direction is switched. - Although not shown, the
spray apparatus 600 may be configured such that theinlet 640 is disposed over thenozzle 670. Similarly to the embodiment described with reference toFIG. 8 , this structure is advantageous to discharging of residual water in the flowpassage forming unit 660. -
FIG. 11 is a view illustrating a nozzle according to an embodiment of the present invention. Referring toFIG. 11 , a spray apparatus according to an embodiment may include a nozzle varying in the area of the spray hole according to the water pressure. Thus, although the spray hole is narrowed due to scale generated by the continuous use of the spray apparatus, a spray amount of a certain level or more can be secured. This nozzle can be implemented in various types. It will be noted that anozzle 270 exemplified herein can be applied to any one of the spray apparatus described in the previous embodiments. - The
nozzle 270 may be formed of a deformable material. Thenozzle 270, particularly, the spray hole may be deformed according to the spray pressure. Although scale is generated around the spray hole, since the area of the spray hole varies, a spray amount of a certain level or more can be secured, and foreign substances in the flowpassage forming units - The spray hole of the
nozzle 270 may be formed to be cut along the edge thereof multiple times. As the cut portions spread out according to the spray pressure, the diameter of the spray hole of thenozzle 270 may increase. -
FIGS. 12A and12B are perspective views illustrating a clothing stand. Referring toFIGS. 12A and12B , aclothing stand 300 may allow clothing to be placed thereon when clothing is washed through thespray apparatus spray apparatus spray apparatus - The
clothing stand 300 may include abase 310 and asupport plate 340. Thesupport plate 340 may be pivotably disposed in thebase 310, and may adjust the contaminated part of clothing so as to face the spray direction of thenozzle 170. A user may place clothing on the clothing stand such that the contaminated part is located on thesupport plate 340, and then may adjust the angle of thesupport plate 340 so as to face thenozzle 170 such that steam sprayed through thenozzle 170 accurately reaches the contaminated part. The maximum pivotable angle of thesupport plate 340 may be set corresponding to the spray direction of thenozzle 170. Theclothing stand 300 may be detachably disposed in thedrum 4 such that a user can arbitrarily attach or detach theclothing stand 300 only when necessary. The laundry stand 300 may be detachably disposed in thedrum 4 such that a user can arbitrarily attach or detach theclothing stand 300 only when necessary. -
FIG. 13 is a view illustrating a procedure of a laundry treatment method according to an embodiment of the present invention and a control relationship among components of each part of a laundry treatment machine during the procedure.FIG. 14 is a graph illustrating a comparison between an internal temperature T1 of a drum and a temperature T2 at an inlet of a nozzle while spraying is being performed from a spray apparatus. Hereinafter, a laundry treatment method according to an embodiment of the present invention will be described with reference toFIGS. 13 and14 . - The laundry treatment method may include a cleaning liquid treatment process S10 in which a solution comprising a detergent is sprayed to laundry, a cleaning liquid infiltration process S20 of waiting for a certain time such that the sprayed solution can be absorbed into laundry, and a steam spraying process S30 in which steam generated by applying heat to flowing water is sprayed to laundry.
- The cleaning liquid treatment process S10 may be performed by the
spray apparatus pump 73 may operate, but thesteam generating heater 130 may stop operating. - According to the invention, the
water supply pipe 74 may be connected to thespray apparatus spray apparatus - In another embodiment, a user may directly load detergent into the
water receiving unit 72. In this case, detergent and water contained in thewater receiving unit 72 may be spent in the cleaning liquid treatment process S10. For the steam spraying process S30, water needs to be again supplied to thewater receiving unit 72. - In still another embodiment, a water receiving unit holding water necessary for steam generation and a detergent receiving unit holding liquid or power detergent may be separately provided. In both cleaning liquid treatment process S10 and steam spraying process S30, spraying may be performed through the
same spray apparatus spray apparatus - In still another embodiment, the flow passage may be configured such that water can be supplied to the
spray apparatus spray apparatus spray apparatus nozzles - The cleaning liquid treatment process S10 may further include blowing air into a space (e.g., drum 4) where laundry is held during the spraying of steam. During the spraying of steam, the
pump 73 may operate (ON), but thesteam generating heater 130 may stop operating (OFF). The heater is turned off during steam injection in order to prevent an overheating. In addition, upon the blowing of air, theblower 22 may operate. Preferably, the cleaning liquid treatment process S10 may spend about 0.5 minutes to several minutes. - The spray angle of the
nozzles drum 4 can be evenly wetted by cleaning liquid sprayed through thespray apparatus - In the cleaning liquid infiltration process S20, the cleaning liquid may infiltrate into laundry. Preferably, in the cleaning liquid infiltration process S20, cleaning liquid may not be further sprayed (pump 73 is turned off), the drying
heater 42 and theblower 22 may stop operating so as to maintain the wet state of laundry. The cleaning liquid infiltration process S20 may spend about 1 minute to about 4 minutes. - In the steam spraying process S30, laundry treated by cleaning liquid may be washed and rinsed. Spraying of steam may be performed through the
spray apparatus spray apparatus - In the steam spraying process S30, the drying
heater 42 may operate to maintain or increase the internal temperature of thedrum 4 in addition to the operation of thepump 73 and the steam generating heater 130 (but, when spraying is performed by its own water pressure of the water supply source that supplies water to thespray apparatus pump 73 can be omitted). Air heated by the dryingheater 42 may be blown into thedrum 4 by theblower 22. In the cleaning liquid infiltration process S20, the dropped internal temperature of thedrum 4 may rise to a certain level again. - In the steam spraying process S30, the temperature of steam sprayed through the
spray apparatus nozzle 170, and the internal temperature of thedrum 4 may be maintained at a temperature range from about 30 degrees to about 40 degrees. Preferably, the internal temperature of thedrum 4 may be always maintained at a temperature range from about 30 degrees to about 40 degrees during the cleaning liquid treatment process S10, the cleaning liquid infiltration process S20, and the steam spraying process S30. - A temperature sensor (not shown) for sensing the temperature of the
drum 4 may be provided. In this case, the controller 41 may control the operation of thepump 73, thesteam generating heater 130, the dryingheater 42, and/or theblower 22 such that the internal temperature of thedrum 4 ranges from about 30 degrees to about 40 degrees according to a sensed value of the temperature sensor. - In the steam spraying process S30, the amount of sprayed water reaching laundry among water sprayed by the
spray apparatus steam generating heater 130. Particularly, water sprayed through thespray apparatus - Generally, it is recommended that clothing such as wool, hemp fiber, polyester, and nylon is washed at a temperature of about 40 degrees or less, and acetate and silk is washed at a temperature of about 35 degrees or less. Also, it is recommended that acryl, denim, rayon is washed at a temperature of about 27 degrees to about 32 degrees and duck down is washed at a temperature of about 38 degrees to about 43 degrees.
- Since skin tissues, which is a representative contaminant that contaminates clothing, have a melting point of about 37 degrees, clothing needs to be washed at a temperature of about 37 degrees or more. However, at a temperature of about 42 degrees, the coagulation and denaturalization of protein may occur, and at a temperature of about 43 degrees or more, the dyeing of clothing may be damaged. Also, bloodstain on clothing may be easily removed at a temperature of about 36 degrees to about 38 degrees.
- In the laundry treatment method according to the embodiment of the present invention, various kinds of contamination sources may be treated by cleaning liquid sprayed in the cleaning liquid treatment process S10, and cleaning liquid may deeply infiltrated into laundry in the cleaning liquid infiltration process S20. Thus, contamination sources may be more easily removed by a soaking action and an activating action. Thereafter, in the steam spraying process S30, high-pressure steam sprayed to laundry may allow the contamination sources to be removed or separated from laundry. Although steam sprayed in the steam spraying process S30 directly contacts laundry, since steam is applied to laundry sufficiently wetted through the cleaning liquid treatment process S10 and the cleaning liquid infiltration process S20, the contamination sources stained on laundry may be prevented from being denaturalized or coagulated.
- Particularly, during the cleaning liquid treatment process S10 and the cleaning liquid infiltration process S20, fatty contaminants may be activated by a chemical action of detergent, thereby facilitating removal of contaminants. Also, steam sprayed in the steam spraying process S30 may serve to effectively remove water-soluble contaminants in consideration of the spray pressure and the temperature of steam, as well as the fatty contaminants.
- Consequently, during the cleaning liquid treatment process S10, the cleaning liquid infiltration process S20, and the steam spraying process S30, the laundry treatment method according to the embodiment of the present invention can effectively remove water-soluble contaminants as well as fatty contaminants, as well as prevent denaturalization and coagulation regardless of the types of contaminants.
- During the steam spraying process S30, contaminants stained on laundry may be significantly removed. Also, since the amount of water absorbed into laundry is sufficient, the coagulation or denaturalization of protein or the denaturalization of clothing does not easily occur even though the internal temperature of the
drum 4 rises due to the operation of the dryingheater 42. - Water sprayed through the
spray apparatus - A drying process S40 may include drying laundry washed or rinsed through the steam spraying process S30. Spraying through the
spray apparatus drum 4. Theblower 22 may operate for the air blowing, and particularly, the dryingheater 42 may operate for quick drying. Preferably, the drying process S40 may spend about 5minutes to about 10 minutes. - The steam spraying process S30 and the drying process S40 may be repeatedly performed. In this case, the repetition of rinsing and drying of laundry may enable effective removal of residual detergent on laundry.
- A temperature reducing process S50 may include reducing the internal temperature of the
drum 4 after the drying process S40. When a user opens thedoor 28 to unload laundry that is completely dried, hot air may be together discharged. In order to prevent the safety accident such as burn, the internal temperature of thedrum 4 may be reduced. Spraying through thespray apparatus blower 22 may operate. In this case, the operation of the dryingheater 42 may be stopped. Preferably, the temperature reducing process S50 may be finished within about 1 minute. - Meanwhile, the
pump 73, thesteam generating heater 130, theblower 22, and the dryingheater 42 may not operate throughout the corresponding process, but may intermittently operate by the control of the controller 41. For example, the operation and the operation stop may be repeated at a certain time interval, or may be controlled according to a predetermined temperature or flow rate based on measured values of a sensing unit such as a temperature sensor (not shown) or a flow rate sensor (not shown). - The laundry treatment method according to the embodiment of the present invention can remove contaminants stained on laundry through steam spraying. Particularly, it is possible to simply remove spots locally stained on laundry. Also, this method has an effect of reducing time, power, and water necessary for treatment of laundry.
- In addition, since the laundry treatment method uses hot steam to treat laundry, the coagulation and denaturalization of contaminants can be prevented regardless of the types of contaminants. Also, sufficient washing performance can be secured with respect to all of water-soluble and fatty contaminants.
Claims (14)
- A laundry treatment method using a steam spraying apparatus, comprising:spraying (S10) cleaning liquid with pre-mixed detergent onto laundry contained in a space for holding laundry;waiting (S20) for a certain time interval such that the sprayed cleaning liquid is absorbed into said laundry; andspraying (S30) steam generated by applying heat to flowing water to the detergent-absorbed laundry,characterized in that the spraying of the cleaning liquid and the spraying of the steam are performed using the same nozzle (170) by supplying water via a detergent receiving unit holding the detergent.
- The laundry treatment method of claim 1, wherein during the spraying of the cleaning liquid air is blown into the space holding laundry.
- The laundry treatment method of claim 1 or 2, wherein the spraying of the steam is performed such that the steam directly contacts laundry.
- The laundry treatment method of claim 3, wherein the spraying of the cleaning liquid comprises spraying steam at a spray angle of about 30 degrees to about 60 degrees.
- The laundry treatment method of any of preceding claims, wherein in the spraying of the steam, an internal temperature of the space holding laundry is maintained at a temperature of about 35 degrees Celsius to about 40 degrees Celsius.
- The laundry treatment method of any of preceding claims, wherein in the spraying of the steam, a spray rate of the steam ranges from about 70 cc per minute to about 120 cc per minute.
- The laundry treatment method of any of preceding claims, wherein the certain time interval ranges from about 1 minute to about 4 minutes.
- The laundry treatment method of any of preceding claims, wherein during the spraying of the steam hot air is separately blown into the space holding laundry.
- The laundry treatment method of any of preceding claims, further comprising drying laundry (S40) after the spraying of the steam.
- The laundry treatment method of claim 9, wherein the drying of laundry comprises blowing hot air, preferably, for about 5 minutes to about 10 minutes into the space holding laundry.
- The laundry treatment method of any of preceding claims, wherein in the spraying of the steam, a detergent supply to the nozzle is stopped.
- The laundry treatment method of any of claims 1 to 10, wherein in the spraying of the cleaning liquid, the detergent is emptied from the detergent receiving unit.
- A laundry treatment apparatus, comprising:a drum (4) for receiving clothing, being rotatably disposed in a casing;a steam spraying apparatus (100) for generating and spraying steam into the drum; anda water supply pipe (74) for supplying water into the steam spraying apparatus,wherein the steam spraying apparatus (100) includes a nozzle (170) configured for spraying cleaning liquid with pre-mixed detergent and steam therethrough,characterized in that the water supply pipe (74) is connected to the steam spraying apparatus (100) via a detergent receiving unit for storing detergent therein.
- The laundry treatment apparatus of claim 13, wherein the detergent receiving unit is configured to stop detergent supply when the steam spraying apparatus generates steam.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120097835A KR101959308B1 (en) | 2012-09-04 | 2012-09-04 | Method of treating laundry |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2703541A2 EP2703541A2 (en) | 2014-03-05 |
EP2703541A3 EP2703541A3 (en) | 2017-08-23 |
EP2703541B1 true EP2703541B1 (en) | 2018-11-28 |
Family
ID=49054468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13182571.3A Active EP2703541B1 (en) | 2012-09-04 | 2013-09-02 | Laundry treatment method and apparatus |
Country Status (7)
Country | Link |
---|---|
US (1) | US20140075683A1 (en) |
EP (1) | EP2703541B1 (en) |
KR (1) | KR101959308B1 (en) |
CN (1) | CN103668865A (en) |
AU (1) | AU2013222057B2 (en) |
BR (1) | BR102013022610A2 (en) |
RU (1) | RU2564237C2 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101362786B1 (en) * | 2011-10-24 | 2014-02-12 | 엘지전자 주식회사 | Drying machine |
CN104720710B (en) * | 2014-07-15 | 2018-02-16 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine and its washing methods |
CN104818597A (en) * | 2015-03-24 | 2015-08-05 | 惠而浦(中国)股份有限公司 | Pre-coating washing program for washing machine |
KR101708316B1 (en) | 2015-06-02 | 2017-02-20 | 엘지전자 주식회사 | Clothes treating apparatus |
KR20170002886A (en) * | 2015-06-30 | 2017-01-09 | 엘지전자 주식회사 | Laundry Treating Apparatus |
CN106702676B (en) * | 2015-07-27 | 2020-11-10 | 青岛海尔滚筒洗衣机有限公司 | Steam generation device for washing machine and washing machine |
EP3535449A1 (en) | 2016-11-01 | 2019-09-11 | Koninklijke Philips N.V. | Portable stain removal device |
CN206680790U (en) * | 2017-04-20 | 2017-11-28 | 广州视源电子科技股份有限公司 | A kind of clothing care machine spray structure and clothing care machine |
CN107952093A (en) * | 2017-12-26 | 2018-04-24 | 宁波雯泽纺织品有限公司 | Clothing sterilizing equipment decontaminating apparatus |
CN108374269B (en) * | 2018-01-15 | 2022-01-28 | 青岛海尔洗涤电器有限公司 | Gas washing method for laundry treatment apparatus and laundry treatment apparatus |
CN108103742B (en) * | 2018-01-15 | 2021-09-07 | 青岛海尔洗涤电器有限公司 | Clothes treatment method for clothes treatment equipment and clothes treatment equipment |
CN108797013A (en) * | 2018-07-27 | 2018-11-13 | 英氏婴童用品有限公司 | Baby child's dress ornament washes maintaining method and intelligence washes shield equipment |
JP7344502B2 (en) * | 2019-04-23 | 2023-09-14 | 青島海爾洗衣机有限公司 | drum type washing machine |
US11466393B2 (en) * | 2020-03-06 | 2022-10-11 | Whirlpool Corporation | Spray system for an appliance having a flexible spray membrane having a separable seam |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU989238A1 (en) * | 1981-05-21 | 1983-01-15 | Научно-исследовательский и проектно-конструкторский институт углеродистых пигментов и наполнителей | Injection nozzle |
JPH0696069B2 (en) * | 1989-03-28 | 1994-11-30 | 三洋電機株式会社 | Washing machine |
JP2004209456A (en) * | 2002-11-12 | 2004-07-29 | Toto Ltd | Steam cleaning device |
KR20050017490A (en) * | 2003-08-13 | 2005-02-22 | 엘지전자 주식회사 | Method for generating steam in Drum-type washing machine |
US7406842B2 (en) * | 2003-08-13 | 2008-08-05 | Lg Electronics Inc. | Washing machine |
KR20050072294A (en) * | 2004-01-06 | 2005-07-11 | 삼성전자주식회사 | Washing machine and control method thereof |
EP1616990B1 (en) * | 2004-07-13 | 2017-08-30 | LG Electronics, Inc. | Washing machine with steam generation apparatus |
RU2339751C2 (en) * | 2004-07-20 | 2008-11-27 | ЭлДжи ЭЛЕКТРОНИКС ИНК. | Method of washing machine control (versions) |
KR101199360B1 (en) * | 2005-08-25 | 2012-11-09 | 엘지전자 주식회사 | operating method for laundry machine |
KR101215347B1 (en) * | 2005-08-29 | 2012-12-26 | 엘지전자 주식회사 | steam generator for drum washing machine and control method as the same |
KR101203854B1 (en) * | 2006-01-03 | 2012-11-21 | 엘지전자 주식회사 | Method controlling washing of washing machine |
US20070283728A1 (en) * | 2006-06-09 | 2007-12-13 | Nyik Siong Wong | Prevention of scale and sludge in a steam generator of a fabric treatment appliance |
KR100857797B1 (en) * | 2006-09-08 | 2008-09-09 | 엘지전자 주식회사 | Operating method of Washing machine |
EP1923499B1 (en) * | 2006-11-15 | 2018-02-28 | Electrolux Home Products Corporation N.V. | Nozzle and additive supply arrangement for a textiles treatment apparatus |
EP1959048B1 (en) * | 2007-02-15 | 2009-04-08 | Electrolux Home Products Corporation N.V. | Clothes drying machine with improved vapour injection arrangement |
US7842264B2 (en) * | 2007-04-12 | 2010-11-30 | Cefco, Llc | Process and apparatus for carbon capture and elimination of multi-pollutants in flue gas from hydrocarbon fuel sources and recovery of multiple by-products |
KR100857801B1 (en) * | 2007-05-09 | 2008-09-09 | 엘지전자 주식회사 | Controlling method of steam laundry dryer |
KR100866884B1 (en) * | 2007-06-15 | 2008-11-04 | 엘지전자 주식회사 | Controlling method of a clothes dryer for detecting an amount of laundry put therein and a clothes dryer with the same |
DE102007028618A1 (en) * | 2007-06-19 | 2009-01-02 | Miele & Cie. Kg | A method of operating a laundry treating machine with steam generating means and laundry treating machine |
US8104191B2 (en) * | 2008-07-31 | 2012-01-31 | Electrolux Home Products, Inc. | Laundry dryer providing moisture application during tumbling and reduced airflow |
KR101053626B1 (en) * | 2008-12-03 | 2011-08-03 | 엘지전자 주식회사 | Laundry apparatus and washing method using the same |
KR101053625B1 (en) * | 2008-12-03 | 2011-08-03 | 엘지전자 주식회사 | Laundry apparatus and washing method using the same |
US20120090362A1 (en) * | 2008-12-31 | 2012-04-19 | Young Jin Hwang | Laundry machine |
EP2325375B1 (en) * | 2009-11-23 | 2016-11-09 | Miele & Cie. KG | Method for operating a washing machine and washing machine |
ES2639580T3 (en) * | 2009-12-03 | 2017-10-27 | Haier Group Corporation | Washing machine for self-added negative pressure washing agent and its control method |
RU2412289C1 (en) * | 2010-05-14 | 2011-02-20 | Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный университет экономики и сервиса" (ГОУ ВПО "ЮРГУЭС") | Washing machine of drum type |
-
2012
- 2012-09-04 KR KR1020120097835A patent/KR101959308B1/en active IP Right Grant
-
2013
- 2013-09-02 EP EP13182571.3A patent/EP2703541B1/en active Active
- 2013-09-03 RU RU2013140721/12A patent/RU2564237C2/en active
- 2013-09-03 AU AU2013222057A patent/AU2013222057B2/en active Active
- 2013-09-03 US US14/016,286 patent/US20140075683A1/en not_active Abandoned
- 2013-09-04 CN CN201310397895.2A patent/CN103668865A/en active Pending
- 2013-09-04 BR BR102013022610-6A patent/BR102013022610A2/en active Search and Examination
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
BR102013022610A2 (en) | 2017-10-24 |
AU2013222057B2 (en) | 2015-11-19 |
KR20140030987A (en) | 2014-03-12 |
EP2703541A2 (en) | 2014-03-05 |
AU2013222057A1 (en) | 2014-03-20 |
KR101959308B1 (en) | 2019-07-04 |
RU2564237C2 (en) | 2015-09-27 |
CN103668865A (en) | 2014-03-26 |
RU2013140721A (en) | 2015-03-10 |
US20140075683A1 (en) | 2014-03-20 |
EP2703541A3 (en) | 2017-08-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2703541B1 (en) | Laundry treatment method and apparatus | |
EP2873722B1 (en) | Method for treating laundry and detergent used therein | |
EP2703542B1 (en) | Steam spraying apparatus and clothing drying machine including the same | |
JP5695103B2 (en) | Control method of washing machine | |
EP1936021B1 (en) | Method for controlling laundry machine | |
RU2300590C2 (en) | Washing machine with steam generator and method for controlling the same | |
KR100873142B1 (en) | Auxiliary Laundry treating machine and multiple treating system including the same | |
EP1529875A2 (en) | Washing apparatus and control method thereof | |
US20100115788A1 (en) | Steam Generator and Laundry Dryer Having the Same and Controlling Method Thereof | |
EP2061923B1 (en) | Washing machine | |
KR100774217B1 (en) | Laundry dryer | |
EP2325379B1 (en) | Condensing-type drying apparatus | |
CN111394928A (en) | Laundry device having induction heater and control method thereof | |
KR100740836B1 (en) | laundry dryer with steam generator | |
KR100672439B1 (en) | Laundry dryer with steam generator | |
CN102365401A (en) | Operating method for laundry equipment including a scent supply module | |
EP2883998B1 (en) | Fabric treatment apparatus and control method of fabric treatment apparatus | |
CN111379121A (en) | Laundry device having induction heater and control method thereof | |
KR100826176B1 (en) | control method for washing machine | |
KR20080002476A (en) | Washing machine comprising steam generator | |
KR100672438B1 (en) | Laundry dryer with steam generator | |
KR20050042935A (en) | Washing machine and dry cleaning method thereof | |
KR20050042934A (en) | Washing machine and dry cleaning method thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
17P | Request for examination filed |
Effective date: 20130926 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D06F 58/28 20060101ALI20170714BHEP Ipc: D06F 39/00 20060101AFI20170714BHEP Ipc: D06F 39/02 20060101ALI20170714BHEP Ipc: D06F 58/20 20060101ALI20170714BHEP Ipc: D06F 25/00 20060101ALI20170714BHEP Ipc: D06F 39/08 20060101ALI20170714BHEP Ipc: D06F 33/02 20060101ALI20170714BHEP Ipc: D06F 35/00 20060101ALI20170714BHEP |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LG ELECTRONICS INC. |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20180614 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1070355 Country of ref document: AT Kind code of ref document: T Effective date: 20181215 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602013047378 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20181128 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1070355 Country of ref document: AT Kind code of ref document: T Effective date: 20181128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190328 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190228 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190228 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190328 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190301 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602013047378 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
26N | No opposition filed |
Effective date: 20190829 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190930 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190930 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190902 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190902 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20190930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190930 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20190902 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190902 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20130902 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20181128 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20230807 Year of fee payment: 11 |