US20080034808A1 - Water Level Sensor for Steam Generator - Google Patents
Water Level Sensor for Steam Generator Download PDFInfo
- Publication number
- US20080034808A1 US20080034808A1 US11/660,329 US66032906A US2008034808A1 US 20080034808 A1 US20080034808 A1 US 20080034808A1 US 66032906 A US66032906 A US 66032906A US 2008034808 A1 US2008034808 A1 US 2008034808A1
- Authority
- US
- United States
- Prior art keywords
- water level
- common electrode
- water
- steam generator
- electrode
- 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.)
- Abandoned
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 227
- 238000005406 washing Methods 0.000 claims abstract description 33
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
-
- 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
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/087—Water level measuring or regulating devices
-
- 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
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/081—Safety arrangements for preventing water damage
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4234—Steam generating 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/18—Washing liquid level
-
- 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
- D06F2103/60—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks
- D06F2103/62—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to auxiliary conditioning or finishing agents, e.g. filling level of perfume tanks related to systems for water or steam used for conditioning or finishing
-
- 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
- D06F2105/02—Water supply
-
- 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
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/50—Control of washer-dryers characterised by the purpose or target of the control
- D06F33/74—Responding to irregular working conditions, e.g. malfunctioning of pumps
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
-
- 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
Definitions
- the present invention relates to a water level sensor installed in a steam generator of a washing or a drying machine, and more particularly, to a separation-type water level sensor and a steam generator of a washing or drying machine having the same.
- a washing machine serves to wash laundry
- a drying machine serves to dry wet laundry using hot air after washing.
- a washing and drying machine having both washing and drying functions has become widely used.
- washing machines are divided into a pulsator washing machine which washes laundry using a water current generated by rotating a flat plate-type pulsator, and a drum washing machine which washes laundry using head drop of washing water and the laundry and frictional force between the washing water and the laundry, which are generated in a drum by rotating the drum.
- the drum washing machine uses low amounts of water and detergent, and does not cause damage to laundry and entanglement of the laundry, thus being increasingly demanded.
- the conventional drum washing machine comprises a cabinet 10 forming the external appearance of the washing machine, a cylindrical tub 20 supported in the cabinet 10 for storing washing water, a drum 30 provided with through holes for passing the washing water and steam and rotatably installed in the tub 20 , a driving motor 40 for driving the drum 30 , and at least one steam generator 50 for supplying steam to the inside of the drum 30 .
- An opening 13 connected to the inside of the drum 30 for putting and taking the laundry into and out of the washing machine is formed through the front surface of the cabinet 10 , and a door 11 for opening and closing the opening 13 is forwardly rotatably installed on the front surface of the cabinet 10 .
- a water supply valve 15 connected to an external water pipe (not shown) for supplying the washing water to the tub 20 is installed in one side of the drum washing machine.
- the steam generator 50 is connected to the water supply valve 15 for receiving the washing water, heats the washing water stored therein to generate steam, and supplies the generated steam to the drum 30 .
- a steam supply pipe 54 serving as a passage for guiding the steam generated from the steam generator 50 to the inside of the drum 30 and a water supply pipe 55 for supplying the washing water from the water supply valve 15 to the steam generator 50 therethrough are installed at one side of the steam generator 50 .
- the steam supply pipe 54 has a nozzle-shaped end for smoothly spraying the steam to the inner space of the drum 30 , and the end of the steam supply pipe 54 is exposed to the inside of the drum 30 .
- the end of the steam supply pipe 54 connected to the drum 30 is connected to one side of the upper part of the drum 30 , or passes through the gasket.
- the steam supply pipe 54 and the water supply pipe 55 have relatively small lengths and the steam generator 50 is installed above the tub 20 so that the steam generator 50 is easily repaired and checked.
- the steam generator 50 comprises a base case 51 forming the external appearance of the steam generator 50 and having a space for storing water, a cover case 52 connected to the upper surface of the base case 51 , and a heater 53 for heating the water stored in the steam generator 50 .
- the heater 53 is installed on the bottom of the base case 51 .
- the heater 53 directly heats the water under the condition that the heater 53 is completely soaked in the water.
- a water level sensor 60 for sensing a water level in the steam generator 50 to maintain the proper amount of the stored water is installed at the cover case 52 .
- the water level sensor 60 opens the water supply valve 15 to additionally supply water to the steam generator 50 , and when the water level in the steam generator 50 is higher than the reference value, the water level sensor 60 closes the water supply valve 15 to stop the supply of the water and operates the heater 53 to generate steam.
- the water level sensor 60 comprises a receptacle housing 61 forming the external appearance of the water level sensor 60 and fixed to the steam generator 50 , and electrodes 62 , 63 , and 64 installed at the lower part of the housing 61 for sensing the water level in the steam generator 50 . Ends of the electrodes 62 , 63 , and 64 are exposed and contact water, and the other ends of the electrodes 62 , 63 , and 64 are provided with terminals 67 , 68 , and 69 electrically connected to an external device.
- the housing 61 is fixed to the outer surface of the base case 51 by bolts, and a plug housing (not shown) for electrical connection with the external device is supportably inserted into the upper part of the housing 61 .
- the electrodes 62 , 63 , and 64 are installed at proper heights from the bottom surface of the base case 51 so as to sense the water level in the steam generator 50 .
- the electrodes 62 , 63 , and 64 consist of a common electrode 62 serving as a reference electrode for sensing the water level, a low water level electrode 63 for sensing a low water level, and a high water level electrode 64 for sensing a high water level.
- the low water level electrode 63 senses the minimum water level at which the heater 53 is not overheated.
- the common electrode 62 has a length, which is not smaller than that of the low water level electrode 63 .
- the common electrode 62 and the low water level electrode 63 of the water level sensor 60 are soaked in the water stored in the steam generator 50 , the common electrode 62 and the low water level electrode 63 are electrically connected via water, thus sensing the low water level.
- the common electrode 62 and the high water level electrode 64 of the water level sensor 60 are electrically connected via water, thus sensing the high water level.
- the above water level sensor 60 of the conventional steam generator of the drum washing machine has several problems, as follows.
- the water level sensor 60 When the electrodes 62 , 63 , and 64 are soaked in water so that current flows between the electrodes 62 , 63 , and 64 , the water level sensor 60 generates a sensing signal. Accordingly, when the insulation between the terminals 67 , 68 , and 69 is damaged, the water level sensor 60 generates an abnormal sensing signal, thus malfunctioning.
- water permeates the portion of the water level sensor 60 , into which the plug housing (not shown) is inserted, due to a difference of temperatures between the inside and the outside of the steam generator 50 , condensation generated by steam, and splashing of water.
- a capillary phenomenon occurs along the connection portion between the housing 61 and the plug housing (not shown), thus forming a water film.
- the terminals 67 , 68 and 69 are abnormally connected, and thus the water level sensor 60 generates an abnormal water level sensing signal.
- the common electrode 62 and the low water level electrode 63 may become abnormally connected by foreign substances even though water is not present in the steam generator 50 , and thus the water level sensor 60 abnormally generates a water level sensing signal.
- the heater 53 is continuously operated under the condition that the heater 53 is not soaked in the water, thus being overheated.
- the overheating of the heater 53 generates thermal deformation and firing of the cover case 52 , and thus generates a danger of a fire.
- An object of the present invention devised to solve the problem lies on a water level sensor for a steam generator of a washing or drying machine, which prevents malfunction caused by electrical connection between electrodes due to permeation of water into terminals of the electrodes and malfunction caused by short distance between the terminals so as to uniformly maintain a water level in the steam generator and protect a heater, and a steam generator with the same.
- the object of the present invention can be achieved by providing a steam generator of a washing or drying machine comprising a case storing water for generating steam; and a separation-type water level sensor comprising a common electrode assembly comprising a common electrode and a common electrode housing, and inserted into the case; and a first water level electrode assembly comprising a first water level electrode and a first water level electrode housing, separated from the common electrode assembly, and inserted into the case.
- the first water level electrode assembly senses a water level at which the heater is exposed.
- the heater is overheated, thus generating a safety problem. Accordingly, in sensing the water level at which the heater is exposed, malfunction of the water level sensor needs to be eliminated.
- the sensing of a first water level using the first water level electrode assembly uses a voltage value of the first water level electrode, and preferably uses whether or not the first water level electrode and the common electrode are electrically connected. Accordingly, preferably, one end of the common electrode is located at a height lower than or the same height as that of one end of the first water level electrode in the case.
- the common electrode and the first water level electrode are electrically connected, and when the water level in the steam generator is lowered due to generation of steam and the end of the first water level electrode does not contact the water, a short circuit between the common electrode and the first water level electrode occurs. Thereby, the first water level is sensed.
- first water level electrode and the common electrode are respectively installed at separated housings, terminals of the first level electrode and the common electrode connected to a controller are not electrically connected due to moisture.
- the first water level electrode and the common electrode are separated by a sufficient distance, it is possible to prevent the water level sensor from malfunctioning due to electrical connection between the ends of the two electrodes in the case by water drops or foreign substances.
- the common electrode assembly may further comprise a second water level electrode.
- the second water level electrode senses a second water level higher than the first water level. Further, preferably, the second water level senses the maximum water level in the case.
- the common electrode and the second water level electrode are installed in the common electrode housing under that the two electrodes are separated from each other by a sufficient distance.
- the reason that the second water level electrode is separated from the common electrode is the same as the reason that the first water level electrode is separated from the common electrode.
- the sensing of the second water level using the second water level electrode uses a voltage value of the second water level electrode or whether or not the second water level electrode and the common electrode are electrically connected.
- each of the common electrode assembly and the first water level electrode assembly has a socket shape so that an external plug is inserted into the common electrode assembly and the first water level electrode assembly and is electrically connected thereto.
- the water level sensor is electrically connected to a controller by inserting a plug of the controller into the socket-shaped assemblies.
- the water level sensor of the present invention has several effects, as follows.
- FIG. 1 is a perspective view of a conventional drum washing machine having a steam generator
- FIG. 2 is a perspective view of the steam generator
- FIG. 3 is a front view of a water level sensor of FIG. 2 ;
- FIG. 4 is a perspective view of a steam generator having a water level sensor in accordance with an embodiment of the present invention.
- FIG. 5 is a front view illustrating the water level sensor and a heater-protecting water level sensor of FIG. 4 .
- a water level sensor for sensing a water level in a steam generator 150 comprises a common electrode assembly 160 and a first water level electrode assembly 170 .
- the first water level electrode assembly 170 senses a water level at which a heater installed in a case is exposed from water.
- the common electrode assembly 160 comprises a common electrode assembly housing 161 installed in the steam generator 150 , a common electrode 162 , and a second water level electrode 164 for sensing a second water level.
- a portion of the common electrode assembly 160 which is located at the outside of the steam generator 150 , has a socket shape so that a plug (not shown) of a controller is inserted into the socket-shaped portion of the common electrode assembly 160 .
- terminals 167 and 169 of the common electrode 162 and the second water level sensor 164 are electrically connected to the plug, thereby electrically connecting the controller and the common electrode assembly 160 .
- the second water level electrode 164 senses the maximum water level in the case.
- third and fourth electrodes may be installed at heights lower than that of the second water level electrode 164 .
- the common electrode 162 and the second water level electrode 164 are separated from each other by a distance, where at least one electrode can be installed.
- the common electrode terminal 167 and the second water level electrode terminal 169 are separated from each other by a sufficient distance, and more preferably, diaphragms are formed between the two terminals 167 and 169 .
- the first water level electrode assembly 170 comprises a first electrode housing 171 forming the external appearance of the first water level electrode assembly 170 , and a first water level electrode 172 installed at the housing 171 for sensing a water level in the steam generator 150 .
- a portion of the first water level electrode assembly 170 which is located at the outside of the steam generator 150 , has a socket shape.
- a coil heater which is installed at the outside of the steam generator 150 and heats water stored in the steam generator 150 , may be used as a heater 153 of the steam generator 150 . More preferably, a sheath heater, which is completely soaked in water stored in the steam generator 150 and directly heats the water, is used as the heater 153 of the steam generator 150 , so as to increase thermal efficiency and boil the water in a short time.
- the height of the end of the common electrode 162 and the height of the end of the first water level electrode 172 are the same.
- the height of the end of the common electrode 162 may be lower than that of the end of the first water level electrode 172 , or the end of the common electrode 162 may be located at a water level to be sensed by the first water level electrode 172 and the end of the first water level electrode 172 is located below the end of the common electrode 162 .
- the common electrode assembly 160 and the first water level electrode assembly 170 are separated from each other by a sufficient distance.
- the first water level electrode 172 and the common electrode 162 When both of the ends of the first water level electrode 172 and the common electrode 162 contact water in the case, the first water level electrode 172 and the common electrode 162 are electrically connected, thus sensing a first water level.
- the present invention provides a separation-type water level sensor and a steam generator of a washing or drying machine having the same.
- the water level sensor of the present invention has several effects, as follows.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Textile Engineering (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
A separation-type water level sensor, and a steam generator (15) of a washing drying machine having the same. The steam generator (150) includes a case storing water for generating steam; and a separation-type water level sensor comprising a common electrode assembly (160) comprising a water common electrode (162) and a common electrode housing (161), and inserted into the case; and a first water level electrode assembly (170) comprising a first water level electrode (172) and a first water level electrode housing (171), separated form the common electrode assembly (160), and inserted into the case.
Description
- The present invention relates to a water level sensor installed in a steam generator of a washing or a drying machine, and more particularly, to a separation-type water level sensor and a steam generator of a washing or drying machine having the same.
- Generally, a washing machine serves to wash laundry, and a drying machine serves to dry wet laundry using hot air after washing. Recently, a washing and drying machine having both washing and drying functions has become widely used.
- Particularly, washing machines are divided into a pulsator washing machine which washes laundry using a water current generated by rotating a flat plate-type pulsator, and a drum washing machine which washes laundry using head drop of washing water and the laundry and frictional force between the washing water and the laundry, which are generated in a drum by rotating the drum.
- Compared to the pulsator washing machine, the drum washing machine uses low amounts of water and detergent, and does not cause damage to laundry and entanglement of the laundry, thus being increasingly demanded.
- Hereinafter, with reference to FIGS. 1 to 3, a structure of a steam generator of a conventional drum washing machine will be described.
- As shown in
FIG. 1 , the conventional drum washing machine comprises acabinet 10 forming the external appearance of the washing machine, acylindrical tub 20 supported in thecabinet 10 for storing washing water, adrum 30 provided with through holes for passing the washing water and steam and rotatably installed in thetub 20, a driving motor 40 for driving thedrum 30, and at least onesteam generator 50 for supplying steam to the inside of thedrum 30. - An
opening 13 connected to the inside of thedrum 30 for putting and taking the laundry into and out of the washing machine is formed through the front surface of thecabinet 10, and adoor 11 for opening and closing theopening 13 is forwardly rotatably installed on the front surface of thecabinet 10. - Further, a gasket (not shown) for preventing the washing water from leaking through a connection portion between the
door 11 and thetub 20 is installed along the inner circumferential surface of theopening 13. - A
water supply valve 15 connected to an external water pipe (not shown) for supplying the washing water to thetub 20 is installed in one side of the drum washing machine. - The
steam generator 50 is connected to thewater supply valve 15 for receiving the washing water, heats the washing water stored therein to generate steam, and supplies the generated steam to thedrum 30. - A
steam supply pipe 54 serving as a passage for guiding the steam generated from thesteam generator 50 to the inside of thedrum 30 and awater supply pipe 55 for supplying the washing water from thewater supply valve 15 to thesteam generator 50 therethrough are installed at one side of thesteam generator 50. - Preferably, the
steam supply pipe 54 has a nozzle-shaped end for smoothly spraying the steam to the inner space of thedrum 30, and the end of thesteam supply pipe 54 is exposed to the inside of thedrum 30. - In order to prevent the steam sprayed to the inside of the
drum 30 from directly contacting laundry, preferably, the end of thesteam supply pipe 54 connected to thedrum 30 is connected to one side of the upper part of thedrum 30, or passes through the gasket. - Further, preferably, the
steam supply pipe 54 and thewater supply pipe 55 have relatively small lengths and thesteam generator 50 is installed above thetub 20 so that thesteam generator 50 is easily repaired and checked. - With reference to
FIG. 2 , the structure of thesteam generator 50 is described, as follows. - As shown in
FIG. 2 , thesteam generator 50 comprises abase case 51 forming the external appearance of thesteam generator 50 and having a space for storing water, acover case 52 connected to the upper surface of thebase case 51, and aheater 53 for heating the water stored in thesteam generator 50. - A water supply hole (not shown) connected to the
water supply pipe 55 for supplying water to the inside of thesteam generator 50 is formed through one side of thecover case 52, and awater discharge hole 54 a connected to thesteam supply pipe 54 for discharging the generated steam to thedrum 30 is formed through the other side of thecover case 52. - The
heater 53 is installed on the bottom of thebase case 51. Preferably, when water is supplied to thesteam generator 50, theheater 53 directly heats the water under the condition that theheater 53 is completely soaked in the water. - A
water level sensor 60 for sensing a water level in thesteam generator 50 to maintain the proper amount of the stored water is installed at thecover case 52. - That is, when the water level in the
steam generator 50 is lower than a reference value, thewater level sensor 60 opens thewater supply valve 15 to additionally supply water to thesteam generator 50, and when the water level in thesteam generator 50 is higher than the reference value, thewater level sensor 60 closes thewater supply valve 15 to stop the supply of the water and operates theheater 53 to generate steam. - With reference to
FIG. 3 , a structure of thewater level sensor 60 is described in detail, as follows. - The
water level sensor 60 comprises areceptacle housing 61 forming the external appearance of thewater level sensor 60 and fixed to thesteam generator 50, andelectrodes housing 61 for sensing the water level in thesteam generator 50. Ends of theelectrodes electrodes terminals - The
housing 61 is fixed to the outer surface of thebase case 51 by bolts, and a plug housing (not shown) for electrical connection with the external device is supportably inserted into the upper part of thehousing 61. - The
electrodes base case 51 so as to sense the water level in thesteam generator 50. - For example, the
electrodes common electrode 62 serving as a reference electrode for sensing the water level, a lowwater level electrode 63 for sensing a low water level, and a highwater level electrode 64 for sensing a high water level. - Here, the low
water level electrode 63 senses the minimum water level at which theheater 53 is not overheated. - The
common electrode 62 has a length, which is not smaller than that of the lowwater level electrode 63. - When the
common electrode 62 and the lowwater level electrode 63 of thewater level sensor 60 are soaked in the water stored in thesteam generator 50, thecommon electrode 62 and the lowwater level electrode 63 are electrically connected via water, thus sensing the low water level. - Further, when the water level in the
steam generator 50 is raised and thecommon electrode 62, the lowwater level electrode 63, and the highwater level electrode 64 of thewater level sensor 60 are all soaked in the water stored in thesteam generator 50, thecommon electrode 62 and the highwater level electrode 64 are electrically connected via water, thus sensing the high water level. - However, the above
water level sensor 60 of the conventional steam generator of the drum washing machine has several problems, as follows. - When the
electrodes electrodes water level sensor 60 generates a sensing signal. Accordingly, when the insulation between theterminals water level sensor 60 generates an abnormal sensing signal, thus malfunctioning. - That is, water permeates the portion of the
water level sensor 60, into which the plug housing (not shown) is inserted, due to a difference of temperatures between the inside and the outside of thesteam generator 50, condensation generated by steam, and splashing of water. - In this case, a capillary phenomenon occurs along the connection portion between the
housing 61 and the plug housing (not shown), thus forming a water film. Thereby, theterminals water level sensor 60 generates an abnormal water level sensing signal. - Since the distance between the
common electrode 62 and the lowwater level electrode 63 is comparatively short and the heights of thecommon electrode 62 and the lowwater level electrode 63 are the same, thecommon electrode 62 and the lowwater level electrode 63 may become abnormally connected by foreign substances even though water is not present in thesteam generator 50, and thus thewater level sensor 60 abnormally generates a water level sensing signal. - Accordingly, in the case that the
water level sensor 60 abnormally generates the high water level sensing signal when water stored in thesteam generator 50 substantially reaches the low water level, or abnormally generates the low water level sensing signal when water stored in thesteam generator 50 does not substantially reach the minimum water level, theheater 53 is continuously operated under the condition that theheater 53 is not soaked in the water, thus being overheated. - In this case, the overheating of the
heater 53 generates thermal deformation and firing of thecover case 52, and thus generates a danger of a fire. - Further, the overheating of the
heater 53 excessively consumes electric power and water, thus generating an economic loss. - Technical Problem
- An object of the present invention devised to solve the problem lies on a water level sensor for a steam generator of a washing or drying machine, which prevents malfunction caused by electrical connection between electrodes due to permeation of water into terminals of the electrodes and malfunction caused by short distance between the terminals so as to uniformly maintain a water level in the steam generator and protect a heater, and a steam generator with the same.
- Technical Solution
- The object of the present invention can be achieved by providing a steam generator of a washing or drying machine comprising a case storing water for generating steam; and a separation-type water level sensor comprising a common electrode assembly comprising a common electrode and a common electrode housing, and inserted into the case; and a first water level electrode assembly comprising a first water level electrode and a first water level electrode housing, separated from the common electrode assembly, and inserted into the case.
- In the case that a heater for heating water to generate steam is installed in the case, preferably, the first water level electrode assembly senses a water level at which the heater is exposed. When an amount of the water stored in the case is small so that the heater is continuously operated under the condition that the heater is exposed from the water, the heater is overheated, thus generating a safety problem. Accordingly, in sensing the water level at which the heater is exposed, malfunction of the water level sensor needs to be eliminated.
- The sensing of a first water level using the first water level electrode assembly uses a voltage value of the first water level electrode, and preferably uses whether or not the first water level electrode and the common electrode are electrically connected. Accordingly, preferably, one end of the common electrode is located at a height lower than or the same height as that of one end of the first water level electrode in the case.
- When the water level in the steam generator is more than the first water level, the common electrode and the first water level electrode are electrically connected, and when the water level in the steam generator is lowered due to generation of steam and the end of the first water level electrode does not contact the water, a short circuit between the common electrode and the first water level electrode occurs. Thereby, the first water level is sensed.
- Since the first water level electrode and the common electrode are respectively installed at separated housings, terminals of the first level electrode and the common electrode connected to a controller are not electrically connected due to moisture.
- Further, since the first water level electrode and the common electrode are separated by a sufficient distance, it is possible to prevent the water level sensor from malfunctioning due to electrical connection between the ends of the two electrodes in the case by water drops or foreign substances.
- The common electrode assembly may further comprise a second water level electrode. Preferably, the second water level electrode senses a second water level higher than the first water level. Further, preferably, the second water level senses the maximum water level in the case.
- Preferably, the common electrode and the second water level electrode are installed in the common electrode housing under that the two electrodes are separated from each other by a sufficient distance. The reason that the second water level electrode is separated from the common electrode is the same as the reason that the first water level electrode is separated from the common electrode.
- Further, the sensing of the second water level using the second water level electrode uses a voltage value of the second water level electrode or whether or not the second water level electrode and the common electrode are electrically connected.
- Preferably, each of the common electrode assembly and the first water level electrode assembly has a socket shape so that an external plug is inserted into the common electrode assembly and the first water level electrode assembly and is electrically connected thereto. The water level sensor is electrically connected to a controller by inserting a plug of the controller into the socket-shaped assemblies.
- Advantageous Effects
- The water level sensor of the present invention has several effects, as follows.
- First, since a common electrode and a first water level electrode are separated from each other, it is possible to prevent the water level sensor from malfunctioning due to electrical connection between the two electrodes.
- Second, since a common electrode terminal and a second water level electrode terminal are distant from each other such that diaphragms are formed between the two electrodes, and the common electrode terminal and a first water level terminal are separated from each other, it is possible to prevent the generation of a water film between the electrodes, condensation, or splashing of water, thus preventing the water level sensor from malfunctioning.
- The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the principle of the invention.
- In the drawings:
-
FIG. 1 is a perspective view of a conventional drum washing machine having a steam generator; -
FIG. 2 is a perspective view of the steam generator; -
FIG. 3 is a front view of a water level sensor ofFIG. 2 ; -
FIG. 4 is a perspective view of a steam generator having a water level sensor in accordance with an embodiment of the present invention; and -
FIG. 5 is a front view illustrating the water level sensor and a heater-protecting water level sensor ofFIG. 4 . - Reference will now be made in detail to the preferred embodiment of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
- Hereinafter, with reference to
FIGS. 4 and 5 , a water level sensor for a steam generator of a drum washing machine in accordance with an embodiment of the present invention will be described. - In this embodiment, a water level sensor for sensing a water level in a
steam generator 150 comprises acommon electrode assembly 160 and a first waterlevel electrode assembly 170. - The first water
level electrode assembly 170 senses a water level at which a heater installed in a case is exposed from water. - The
common electrode assembly 160 comprises a commonelectrode assembly housing 161 installed in thesteam generator 150, acommon electrode 162, and a secondwater level electrode 164 for sensing a second water level. A portion of thecommon electrode assembly 160, which is located at the outside of thesteam generator 150, has a socket shape so that a plug (not shown) of a controller is inserted into the socket-shaped portion of thecommon electrode assembly 160. When the plug of the controller is inserted into the socket-shaped portion of thecommon electrode assembly 160,terminals common electrode 162 and the secondwater level sensor 164 are electrically connected to the plug, thereby electrically connecting the controller and thecommon electrode assembly 160. - The second
water level electrode 164 senses the maximum water level in the case. In order to sense the water level step-by-step, third and fourth electrodes may be installed at heights lower than that of the secondwater level electrode 164. - Preferably, in the
common electrode assembly 160, thecommon electrode 162 and the secondwater level electrode 164 are separated from each other by a distance, where at least one electrode can be installed. - In order to prevent the
common electrode terminal 167 and the second waterlevel electrode terminal 169 from being electrically connected due to a water film, condensation, or splashing of water, preferably, thecommon electrode terminal 167 and the second waterlevel electrode terminal 169 are separated from each other by a sufficient distance, and more preferably, diaphragms are formed between the twoterminals - When both of ends of the
common electrode 162 and the secondwater level electrode 164 contact water in the case, thecommon electrode 162 and the secondwater level electrode 164 are electrically connected, thus sensing a second water level. - The first water
level electrode assembly 170 comprises afirst electrode housing 171 forming the external appearance of the first waterlevel electrode assembly 170, and a firstwater level electrode 172 installed at thehousing 171 for sensing a water level in thesteam generator 150. The same as thecommon electrode assembly 160, a portion of the first waterlevel electrode assembly 170, which is located at the outside of thesteam generator 150, has a socket shape. - A coil heater, which is installed at the outside of the
steam generator 150 and heats water stored in thesteam generator 150, may be used as aheater 153 of thesteam generator 150. More preferably, a sheath heater, which is completely soaked in water stored in thesteam generator 150 and directly heats the water, is used as theheater 153 of thesteam generator 150, so as to increase thermal efficiency and boil the water in a short time. - In the case, the height of the end of the
common electrode 162 and the height of the end of the firstwater level electrode 172 are the same. - The height of the end of the
common electrode 162 may be lower than that of the end of the firstwater level electrode 172, or the end of thecommon electrode 162 may be located at a water level to be sensed by the firstwater level electrode 172 and the end of the firstwater level electrode 172 is located below the end of thecommon electrode 162. - In order to prevent the
common electrode 162 and the firstwater level electrode 172 from being electrically connected by foreign substances, thecommon electrode assembly 160 and the first waterlevel electrode assembly 170 are separated from each other by a sufficient distance. - When both of the ends of the first
water level electrode 172 and thecommon electrode 162 contact water in the case, the firstwater level electrode 172 and thecommon electrode 162 are electrically connected, thus sensing a first water level. - The present invention provides a separation-type water level sensor and a steam generator of a washing or drying machine having the same.
- The water level sensor of the present invention has several effects, as follows.
- First, since a common electrode and a first water level electrode are separated from each other, it is possible to prevent the water level sensor from malfunctioning due to electrical connection between the two electrodes.
- Second, since a common electrode terminal and a second water level electrode terminal are distant from each other such that diaphragms are formed between the two electrodes, and the common electrode terminal and a first water level terminal are separated from each other, it is possible to prevent the generation of a water film between the electrodes, condensation, or splashing of water, thus preventing the water level sensor from malfunctioning.
- It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (6)
1. A steam generator of a washing or drying machine comprising:
a case storing water for generating steam; and
a separation-type water level sensor comprising:
a common electrode assembly comprising a common electrode and a common electrode housing, and inserted into the case; and
a first water level electrode assembly comprising a first water level electrode and
a first water level electrode housing, separated from the common electrode assembly, and inserted into the case.
2. The steam generator as set forth in claim 1 , wherein the common electrode assembly further comprises a second water level electrode.
3. The steam generator as set forth in claim 1 , wherein each of the common electrode assembly and the first water level electrode assembly has a socket so that an external plug is inserted into the socket to be electrically connected to the common electrode assembly and the first water level electrode assembly.
4. The steam generator as set forth in claim 1 , further comprising a heater installed in the case storing the water,
wherein the first water level electrode senses a level of water out of which at least a part of the heater is exposed.
5. A separation-type water level sensor for a steam generator comprising:
a common electrode assembly comprising a common electrode and a common electrode housing; and
a first water level electrode assembly separated from the common electrode assembly, and comprising a first water level electrode and a first water level electrode housing.
6. The separation-type water level sensor as set forth in claim 5 , wherein the common electrode assembly further comprises a second water level electrode.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2005-0042996 | 2005-05-23 | ||
KR1020050042996A KR101253126B1 (en) | 2005-05-23 | 2005-05-23 | Water Level Sensor of Apparatus for Spraying Steam in Drum type Washer |
PCT/KR2006/001078 WO2006126779A1 (en) | 2005-05-23 | 2006-03-31 | Water level sensor for steam generator |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080034808A1 true US20080034808A1 (en) | 2008-02-14 |
Family
ID=37452176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/660,329 Abandoned US20080034808A1 (en) | 2005-05-23 | 2006-03-31 | Water Level Sensor for Steam Generator |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080034808A1 (en) |
EP (1) | EP1883728B1 (en) |
KR (1) | KR101253126B1 (en) |
CN (1) | CN101223311A (en) |
AU (1) | AU2006250222B2 (en) |
RU (1) | RU2362849C1 (en) |
WO (1) | WO2006126779A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080000098A1 (en) * | 2006-02-20 | 2008-01-03 | Choi Chul J | Drying machine and method for controlling the same |
US20080168679A1 (en) * | 2007-01-12 | 2008-07-17 | Lg Electronics Inc. | Laundry machine and control method thereof |
US20090265953A1 (en) * | 2006-06-12 | 2009-10-29 | Lg Electronics Inc. | Laundry dryer and method for controlling the same |
US20110022267A1 (en) * | 2009-07-21 | 2011-01-27 | Trimble Navigation Limited | Agricultural Vehicle Autopilot Rollover Risk Assessment System |
CN102997972A (en) * | 2012-10-26 | 2013-03-27 | 浙江比华丽电子科技有限公司 | Claw type water level sensor |
CN111084562A (en) * | 2019-12-04 | 2020-05-01 | 九阳股份有限公司 | Food processing machine |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7730568B2 (en) | 2006-06-09 | 2010-06-08 | Whirlpool Corporation | Removal of scale and sludge in a steam generator of a fabric treatment appliance |
US7765628B2 (en) | 2006-06-09 | 2010-08-03 | Whirlpool Corporation | Steam washing machine operation method having a dual speed spin pre-wash |
US7941885B2 (en) | 2006-06-09 | 2011-05-17 | Whirlpool Corporation | Steam washing machine operation method having dry spin pre-wash |
US7707859B2 (en) | 2006-08-15 | 2010-05-04 | Whirlpool Corporation | Water supply control for a steam generator of a fabric treatment appliance |
US7886392B2 (en) | 2006-08-15 | 2011-02-15 | Whirlpool Corporation | Method of sanitizing a fabric load with steam in a fabric treatment appliance |
US7841219B2 (en) | 2006-08-15 | 2010-11-30 | Whirlpool Corporation | Fabric treating appliance utilizing steam |
US7681418B2 (en) | 2006-08-15 | 2010-03-23 | Whirlpool Corporation | Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor |
US7665332B2 (en) | 2006-08-15 | 2010-02-23 | Whirlpool Corporation | Steam fabric treatment appliance with exhaust |
US7753009B2 (en) | 2006-10-19 | 2010-07-13 | Whirlpool Corporation | Washer with bio prevention cycle |
ES2349021T3 (en) * | 2007-03-13 | 2010-12-21 | Electrolux Home Products Corporation N.V. | DOMESTIC CLOTHES DRYER. |
US8393183B2 (en) | 2007-05-07 | 2013-03-12 | Whirlpool Corporation | Fabric treatment appliance control panel and associated steam operations |
US7966683B2 (en) | 2007-08-31 | 2011-06-28 | Whirlpool Corporation | Method for operating a steam generator in a fabric treatment appliance |
US8555676B2 (en) | 2007-08-31 | 2013-10-15 | Whirlpool Corporation | Fabric treatment appliance with steam backflow device |
US8037565B2 (en) | 2007-08-31 | 2011-10-18 | Whirlpool Corporation | Method for detecting abnormality in a fabric treatment appliance having a steam generator |
US7861343B2 (en) | 2007-08-31 | 2011-01-04 | Whirlpool Corporation | Method for operating a steam generator in a fabric treatment appliance |
US7918109B2 (en) | 2007-08-31 | 2011-04-05 | Whirlpool Corporation | Fabric Treatment appliance with steam generator having a variable thermal output |
US8555675B2 (en) | 2007-08-31 | 2013-10-15 | Whirlpool Corporation | Fabric treatment appliance with steam backflow device |
US7690062B2 (en) | 2007-08-31 | 2010-04-06 | Whirlpool Corporation | Method for cleaning a steam generator |
US7905119B2 (en) | 2007-08-31 | 2011-03-15 | Whirlpool Corporation | Fabric treatment appliance with steam generator having a variable thermal output |
KR101138887B1 (en) * | 2007-12-14 | 2012-05-14 | 삼성전자주식회사 | Washing machine and method for indicating a water level |
KR100915449B1 (en) * | 2008-01-03 | 2009-09-04 | 엘지전자 주식회사 | Steam Generator |
RU2683654C2 (en) | 2009-05-28 | 2019-04-01 | ДжиПи СЕЛЛЬЮЛОУС ГМБХ | Modified cellulose from chemical kraft fiber and method of manufacturing and using same |
EP2295855A1 (en) * | 2009-08-18 | 2011-03-16 | BSH Bosch und Siemens Hausgeräte GmbH | Steam separator and method of separating steam and water in a laundry appliance |
DE102010029307A1 (en) * | 2010-05-26 | 2011-12-01 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic appliance with a container and a level measuring device and corresponding level measurement method |
CN106400403B (en) * | 2015-07-30 | 2020-07-21 | 青岛海尔滚筒洗衣机有限公司 | Water inlet box with function of detecting whether detergent is put in and washing machine |
KR20210074946A (en) * | 2019-12-12 | 2021-06-22 | 삼성전자주식회사 | Steam generator and clothes care apparatus having the same |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1961893A (en) * | 1933-07-26 | 1934-06-05 | Hartford Empire Co | Automatic level control system |
US2653304A (en) * | 1950-06-06 | 1953-09-22 | Howard M Wadsworth | Detachable electrical connector |
US3657556A (en) * | 1970-08-03 | 1972-04-18 | Marine Ind Inc | Liquid level switch |
US4948947A (en) * | 1988-07-26 | 1990-08-14 | Pacific Steam Equipment, Inc. | Steam boiler |
US20030010117A1 (en) * | 2001-07-13 | 2003-01-16 | Jong-Chull Shon | Water level sensor |
US6513377B1 (en) * | 2000-04-03 | 2003-02-04 | R.E.A. S.N.C. Di Sassi Baudin & C. | Boiler level indicator |
US6577815B1 (en) * | 2001-05-10 | 2003-06-10 | Chen Sheng Wu | Steam generating device for use in sauna |
US20040187527A1 (en) * | 2003-03-31 | 2004-09-30 | Kim Jin Woong | Steam jet drum washing machine |
US20040187529A1 (en) * | 2003-03-31 | 2004-09-30 | Jin Woong Kim | Steam jet drum washing machine |
US20050034487A1 (en) * | 2003-08-13 | 2005-02-17 | Soo-Young Oh | Drum type washing machine and vapor generator thereof |
US20050034250A1 (en) * | 2003-08-13 | 2005-02-17 | Soo Young Oh | Heating apparatus of washing machine and control method thereof |
US20050144735A1 (en) * | 2004-01-06 | 2005-07-07 | Samsung Electronics Co., Ltd. | Washing machine and control method thereof |
US20060277690A1 (en) * | 2005-06-13 | 2006-12-14 | Samsung Electronics, Co., Ltd. | Washing machine and control method thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE546752C (en) * | 1930-07-12 | 1932-03-19 | L & C Steinmueller | Electric remote water level indicator with several current connection electrodes arranged at different heights |
DE2536822B2 (en) * | 1975-08-19 | 1977-10-20 | Gustav F. Gerdts Kg, 2800 Bremen | ELECTRODE ARRANGEMENT FOR MONITORING THE WATER LEVEL IN STEAM BOILERS |
JPH07270216A (en) * | 1994-03-29 | 1995-10-20 | East Japan Railway Co | Liquid level detector |
JPH10220706A (en) * | 1997-02-10 | 1998-08-21 | Samson Co Ltd | Water level abnormality detector for steam generator |
JP2002107203A (en) * | 2000-10-02 | 2002-04-10 | Oizumi Seisakusho:Kk | Sensor for water level detection |
EP1616990B1 (en) * | 2004-07-13 | 2017-08-30 | LG Electronics, Inc. | Washing machine with steam generation apparatus |
KR20050043874A (en) * | 2005-04-21 | 2005-05-11 | 엘지전자 주식회사 | Washing method for steam injection type drum washer |
-
2005
- 2005-05-23 KR KR1020050042996A patent/KR101253126B1/en active IP Right Grant
-
2006
- 2006-03-31 US US11/660,329 patent/US20080034808A1/en not_active Abandoned
- 2006-03-31 EP EP06732681.9A patent/EP1883728B1/en active Active
- 2006-03-31 WO PCT/KR2006/001078 patent/WO2006126779A1/en active Application Filing
- 2006-03-31 RU RU2007143381/12A patent/RU2362849C1/en active
- 2006-03-31 CN CNA200680025852XA patent/CN101223311A/en active Pending
- 2006-03-31 AU AU2006250222A patent/AU2006250222B2/en active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1961893A (en) * | 1933-07-26 | 1934-06-05 | Hartford Empire Co | Automatic level control system |
US2653304A (en) * | 1950-06-06 | 1953-09-22 | Howard M Wadsworth | Detachable electrical connector |
US3657556A (en) * | 1970-08-03 | 1972-04-18 | Marine Ind Inc | Liquid level switch |
US4948947A (en) * | 1988-07-26 | 1990-08-14 | Pacific Steam Equipment, Inc. | Steam boiler |
US6513377B1 (en) * | 2000-04-03 | 2003-02-04 | R.E.A. S.N.C. Di Sassi Baudin & C. | Boiler level indicator |
US6577815B1 (en) * | 2001-05-10 | 2003-06-10 | Chen Sheng Wu | Steam generating device for use in sauna |
US20030010117A1 (en) * | 2001-07-13 | 2003-01-16 | Jong-Chull Shon | Water level sensor |
US20040187527A1 (en) * | 2003-03-31 | 2004-09-30 | Kim Jin Woong | Steam jet drum washing machine |
US20040187529A1 (en) * | 2003-03-31 | 2004-09-30 | Jin Woong Kim | Steam jet drum washing machine |
US20050034487A1 (en) * | 2003-08-13 | 2005-02-17 | Soo-Young Oh | Drum type washing machine and vapor generator thereof |
US20050034250A1 (en) * | 2003-08-13 | 2005-02-17 | Soo Young Oh | Heating apparatus of washing machine and control method thereof |
US20050144735A1 (en) * | 2004-01-06 | 2005-07-07 | Samsung Electronics Co., Ltd. | Washing machine and control method thereof |
US20060277690A1 (en) * | 2005-06-13 | 2006-12-14 | Samsung Electronics, Co., Ltd. | Washing machine and control method thereof |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080000098A1 (en) * | 2006-02-20 | 2008-01-03 | Choi Chul J | Drying machine and method for controlling the same |
US8931186B2 (en) | 2006-02-20 | 2015-01-13 | Lg Electronics Inc. | Drying machine and method for controlling the same |
US9206542B2 (en) | 2006-02-20 | 2015-12-08 | Lg Electronics Inc. | Drying machine and method for controlling the same |
US20090265953A1 (en) * | 2006-06-12 | 2009-10-29 | Lg Electronics Inc. | Laundry dryer and method for controlling the same |
US8424220B2 (en) | 2006-06-12 | 2013-04-23 | Lg Electronics Inc. | Laundry dryer and method for controlling the same |
US20080168679A1 (en) * | 2007-01-12 | 2008-07-17 | Lg Electronics Inc. | Laundry machine and control method thereof |
US7997006B2 (en) * | 2007-01-12 | 2011-08-16 | Lg Electronics Inc. | Laundry machine and control method thereof |
US20110022267A1 (en) * | 2009-07-21 | 2011-01-27 | Trimble Navigation Limited | Agricultural Vehicle Autopilot Rollover Risk Assessment System |
CN102997972A (en) * | 2012-10-26 | 2013-03-27 | 浙江比华丽电子科技有限公司 | Claw type water level sensor |
CN111084562A (en) * | 2019-12-04 | 2020-05-01 | 九阳股份有限公司 | Food processing machine |
Also Published As
Publication number | Publication date |
---|---|
CN101223311A (en) | 2008-07-16 |
KR20060120815A (en) | 2006-11-28 |
RU2362849C1 (en) | 2009-07-27 |
AU2006250222A1 (en) | 2006-11-30 |
EP1883728A1 (en) | 2008-02-06 |
KR101253126B1 (en) | 2013-04-10 |
AU2006250222B2 (en) | 2010-04-01 |
EP1883728A4 (en) | 2014-11-05 |
EP1883728B1 (en) | 2017-08-02 |
WO2006126779A1 (en) | 2006-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20080034808A1 (en) | Water Level Sensor for Steam Generator | |
CN101180426B (en) | Method of operating in washing machine | |
EP1731656B1 (en) | Foam sensor of a drum washing machine | |
US7913522B2 (en) | Water level sensor of steam generating apparatus for washing or drying machine and steam generating apparatus with the same | |
US10995446B2 (en) | Steam generator and washing machine having the same | |
KR101186595B1 (en) | coupling structure of steam generator in washing device | |
US8171756B2 (en) | Steam generator of drum washing machine | |
US20070199353A1 (en) | Steam generator and drum type washing machine with the same | |
EP1873298B1 (en) | Steam generating device and washing machine having the same | |
US7930909B2 (en) | Steam generator and washing/drying machine having the same | |
EP1887123A1 (en) | Process to control a steam unit of a domestic appliance | |
CN101184884A (en) | Operating method of the laundry machine | |
KR100748977B1 (en) | Drum washing machine | |
KR100724372B1 (en) | Steam generation apparatus for washing machine | |
KR101036477B1 (en) | Steam generator and washing machine using the same | |
KR101100186B1 (en) | Water Level Sensor of Apparatus for Spraying Steam in Drum type Washer | |
EP2287583A1 (en) | Sensor for Measuring a Temperature of a Heater in a Laundry Appliance, and Steam Generator | |
CN111926527B (en) | Clothes treatment device and foam sensing method | |
KR20230128727A (en) | Heating device for clothing management | |
KR20060101941A (en) | Water level sensor of apparatus for spraying steam in drum type washer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |