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EP2840180B1 - Dispositif de traitement de vêtements - Google Patents

Dispositif de traitement de vêtements Download PDF

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Publication number
EP2840180B1
EP2840180B1 EP13807422.4A EP13807422A EP2840180B1 EP 2840180 B1 EP2840180 B1 EP 2840180B1 EP 13807422 A EP13807422 A EP 13807422A EP 2840180 B1 EP2840180 B1 EP 2840180B1
Authority
EP
European Patent Office
Prior art keywords
steam
water
steam generator
casing
wall
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
Application number
EP13807422.4A
Other languages
German (de)
English (en)
Other versions
EP2840180A1 (fr
EP2840180A4 (fr
Inventor
Fumihiko Migaki
Shinichiro Kobayashi
Yoshikatsu SONODA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to SI201330820T priority Critical patent/SI2840180T1/sl
Publication of EP2840180A1 publication Critical patent/EP2840180A1/fr
Publication of EP2840180A4 publication Critical patent/EP2840180A4/fr
Application granted granted Critical
Publication of EP2840180B1 publication Critical patent/EP2840180B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K5/00—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type
    • F01K5/02—Plants characterised by use of means for storing steam in an alkali to increase steam pressure, e.g. of Honigmann or Koenemann type used in regenerative installation
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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 clothing treatment device for washing, spin-drying and/or drying clothing.
  • the washing machine described in PTL 1 is configured such that steam is generated by a heater immersed in water and the generated steam is supplied to a drum in which clothing is housed.
  • EP 2 267 209 A1 relates to a steam production device for a laundry treatment machine and laundry treatment machine.
  • the device has a chamber heated by a heating body for provision of a boiling process.
  • An inlet opening is provided for water, and an outlet opening is provided for steam.
  • Another chamber is provided downstream to the former chamber for heating and/or maintaining temperature of the steam.
  • the inlet opening is provided with a nozzle of silicon material for atomizing water flowing into the device.
  • the nozzle is made of elastic, heat-resistant material. A cross section of an opening of the nozzle is changed by the water flowing through the nozzle.
  • a laundry treatment machine comprises a steam generation device and a container.
  • EP 1 845 184 A1 relates to a clothing treatment device according to the preamble of claim 1.
  • a clothing treatment device includes: a housing tub for housing clothing; and a steam supply mechanism for injecting steam into the housing tub.
  • the steam supply mechanism includes: a steam generator having a wall surface which defines a chamber for generating the steam; a heater for heating the wall surface; a water supply mechanism for injecting water to the wall surface; a casing which covers the steam generator; and a spacer which makes the steam generator and the casing spaced apart from each other.
  • the steam generator has at least one wall surface which defines the chamber for generating the steam.
  • the water supply mechanism injects water to the wall surface heated by the heater. The injected water hits the wall surface heated by the heater so that the water becomes water vapor.
  • a pressure in a chamber of the steam generator is sharply increased due to vapor pressure generated when water becomes water vapor, and water vapor is injected into a housing tub in which clothing is housed.
  • the steam generator is spaced apart from the casing by the spacer. Accordingly, the safety of the clothing treatment device can be enhanced while suppressing the increase of a temperature of the casing.
  • a clothing treatment device of an exemplary embodiment of the present invention is described with reference to drawings.
  • the present invention is not limited by the exemplary embodiment.
  • the description is made by taking a washing machine as an example of a clothing treatment device.
  • terms indicating the directions used in the description made hereinafter such as “upward”, “downward”, “leftward” and “rightward” are used merely for the clarification of the description and do not limit the principle of the clothing treatment device in any way.
  • the principle of the clothing treatment device is also applicable to a device which has an ability of washing and drying clothing and a device which dries clothing.
  • FIG. 1 is a schematic longitudinal cross-sectional view of a washing machine exemplified as a clothing treatment device of the exemplary embodiment of the present invention.
  • washing machine 100 of this exemplary embodiment includes at least: casing 110; and housing tub 200 for housing clothing inside casing 110.
  • Housing tub 200 includes rotary drum 210 having peripheral wall 211 which surrounds axis of rotation RX and which has an approximately circular cylindrical shape (including a circular cylindrical shape), and water tub 220 which houses rotary drum 210.
  • Casing 110 is constituted of: front wall 111 in which a put-in opening through which clothing is put into housing tub 200 is formed; rear wall 112 disposed opposite to front wall 111; casing ceiling wall 113 which extends approximately horizontally (including horizontally); casing bottom wall 114 disposed opposite to casing ceiling wall 113; a left wall and a right wall described later and the like.
  • rotary drum 210 and water tub 220 of housing tub 200 are opened toward front wall 111.
  • Washing machine 100 further includes door body 120 which is mounted on front wall 111 of casing 110.
  • Door body 120 is rotatable between a closed position where door body 120 closes the put-in opening formed in front wall 111 and an open position where door body 120 opens the put-in opening. Due to such a constitution, a user can put clothing into housing tub 200 through the put-in opening formed in front wall 111 after rotating door body 120 to the open position. Thereafter, the user moves door body 120 to the closed position, and the washing machine 100 washes the clothing already put into washing machine 100.
  • FIG. 1 shows a state where door body 120 is at the closed position.
  • Rotary drum 210 includes peripheral wall 211 and bottom wall 212, and is rotated about axis of rotation RX which extends between front wall 111 and rear wall 112 of casing 110. Clothing put into housing tub 200 moves inside rotary drum 210 along with the rotation of rotary drum 210. Due to such an operation, clothing is subjected to various processing such as washing processing, rinsing processing and/or spin-drying processing. Bottom wall 212 of rotary drum 210 is disposed in a state where the bottom wall 212 faces door body 120 at the closed position.
  • Water tub 220 is constituted of at least bottom portion 221, and front portion 222.
  • Bottom portion 221 surrounds bottom wall 212 and a portion of peripheral wall 211 of rotary drum 210.
  • Front portion 222 is disposed between bottom portion 221 of water tub 220 and door body 120, and surrounds a remaining portion of peripheral wall 211 of rotary drum 210 which front portion 222 faces.
  • Housing tub 200 includes rotary shaft 230 which is mounted on bottom wall 212 of rotary drum 210, and extends toward rear wall 112 of casing 110 along axis of rotation RX. Accordingly, rotary shaft 230 is provided such that rotary shaft 230 penetrates bottom portion 221 of water tub 220 and projects into a space formed between water tub 220 and rear wall 112.
  • Washing machine 100 includes motor 231 which is mounted on a lower side of water tub 220, pulley 232 which is mounted on rotary shaft 230 which is exposed to the outside of water tub 220, and belt 233 which transmits power of motor 231 to pulley 232. Further, when motor 231 is operated, power of motor 231 is transmitted to rotary shaft 230 by way of belt 233 and pulley 232. As a result, rotary drum 210 rotates inside water tub 220.
  • Washing machine 100 further includes packing structure 130 disposed between front portion 222 of water tub 220 and door body 120.
  • packing structure 130 is compressed by door body 120.
  • the watertight sealing structure is formed between door body 120 and front portion 222.
  • Washing machine 100 includes water supply port 140 which is connected to a faucet (not shown in the drawing), and distribution part 141 for distributing water introduced into washing machine 100 through water supply port 140.
  • Water supply port 140 is disposed in a state where the water supply port 140 projects upward from casing ceiling wall 113, and distribution part 141 is disposed between casing ceiling wall 113 and housing tub 200.
  • washing machine 100 includes a detergent housing part (not shown in the drawing) in which a detergent is housed, and steam supply mechanism 300 which injects steam to housing tub 200 (described later).
  • Distribution part 141 includes a plurality of water supply valves for selectively supplying water to housing tub 200, detergent housing part and steam supply mechanism 300 through water supply passages (not shown in the drawing). It is needless to say that known techniques applied to washing machines are preferably applicable to the supply of water to housing tub 200 and the detergent housing part.
  • FIG. 2 is a schematic perspective view of the washing machine of the exemplary embodiment with a part shown in a see-through manner.
  • FIG. 3 is a schematic perspective view of the steam supply mechanism which is housed in the casing of the washing machine of the exemplary embodiment.
  • Casing 110 is indicated by a dotted line in FIG. 2 and FIG. 3 , and housing tub 200 is not shown in FIG. 3 .
  • An arrow in FIG. 3 schematically shows the water supply passages which connect the respective parts to each other.
  • steam supply mechanism 300 includes at least water supply valve 310 which is used as a part of distribution part 141, and water storage tank 320 which is disposed below housing tub 200.
  • Water supply valve 310 controls the supply of water to water storage tank 320. That is, when water supply valve 310 is opened, water is supplied to water storage tank 320 from water supply port 140. When water supply valve 310 is closed, the supply of water to water storage tank 320 is stopped.
  • Steam supply mechanism 300 further includes pump 330 which is mounted on water storage tank 320, and steam generating part 400 which receives water discharged from pump 330.
  • Pump 330 performs an operation to supply water to steam generating part 400 intermittently or continuously. During an intermittent water supply operation, pump 330 supplies a proper amount of water which is adjusted such that steam is generated instantaneously to steam generating part 400 described later.
  • water is continuously supplied to steam generating part 400 by pump 330, it is possible to wash away an impurity (scale) or the like contained in water used for steam generation from steam generating part 400.
  • steam supply mechanism 300 further includes steam communication tube 340 which extends downward from steam generating part 400.
  • front portion 222 of water tub 220 includes peripheral wall portion 223 which surrounds peripheral wall 211 of rotary drum 210, and annular portion 224 shown in FIG. 2 which forms the watertight sealing structure in cooperation with packing structure 130.
  • Steam communication tube 340 of steam supply mechanism 300 is connected to peripheral wall portion 223 of front portion 222. Due to such a constitution, steam generated in steam generating part 400 is supplied to housing tub 200 through steam communication tube 340. It is preferable that steam communication tube 340 be formed such that at least a portion of steam communication tube 340 is formed into a bellows shape, for example, so as to prevent vibrations generated by the rotation of housing tub 200 from being transmitted to steam generating part 400.
  • steam supply mechanism 300 of this exemplary embodiment it is possible to forcibly supply water to steam generator 420 (see FIG. 8 ) disposed inside steam generating part 400 from water storage tank 320 by pump 330. Accordingly, steam generator 420 can be disposed above water storage tank 320.
  • steam generator 420 can be disposed above water storage tank 320.
  • steam generator 420 is disposed above water storage tank 320 as shown in FIG. 2 , water can be supplied to steam generator 420 from water storage tank 320 by pump 330 without causing any problems.
  • steam generator 420 of steam generating part 400 is disposed above housing tub 200.
  • an impurity contained in water supplied to steam generator 420 adheres to or precipitates on a wall surface of chamber space 430 which is defined by outer chamber wall 431, inner chamber wall 432 and upper surface 429 of body portion 423, and lower surface 434 of lid portion 424 which constitute steam generator 420 at the time of evaporating water.
  • the impurity is deposited on the wall surface which defines chamber space 430. In this case, the heat transfer between the wall surface of chamber space 430 and supplied water is not performed properly due to the impurity and hence, water supplied to steam generator 420 is minimally evaporated.
  • water storage tank 320 is disposed in a left lower space of casing 110, and steam generator 420 is disposed in a right upper space of casing 110. That is, steam generator 420 and water storage tank 320 are disposed at approximately symmetrical positions (including completely symmetrical positions) with respect to the center axis of housing tub 200 (axis of rotation RX).
  • a detergent housing part (not shown in the drawing) which houses a detergent is disposed on either a left side or a right side of an upper front portion of casing 110. Accordingly, a space which is defined by casing 110 and housing tub 200 having approximately circular cylindrical shape (including a circular cylindrical shape) excluding a position occupied by the detergent housing part can be effectively used as a space for disposing water storage tank 320 and steam generator 420.
  • water storage tank 320 is disposed on a rear side of the left lower portion of casing 110.
  • a space defined between an inner surface of casing 110 having an approximately rectangular box shape (including a rectangular box shape) and an outer peripheral surface of housing tub 200 can be effectively used for disposing water storage tank 320 and steam generator 420.
  • a design size of water storage tank 320 and a design size of steam generator 420 can be set to values which allow housing of water storage tank 320 and steam generator 420 having maximally large sizes in the space defined in washing machine 100.
  • water storage tank 320 may be disposed at a position approximately symmetrical with the detergent housing part with respect to the center axis of housing tub 200 (axis of rotation RX), and steam generator 420 may be disposed at a position approximately symmetrical with water storage tank 320 with respect to horizontal plane HP which includes axis of rotation RX of housing tub 200.
  • the space inside casing 110 can be effectively used in the same manner as described above.
  • water storage tank 320 may be disposed below the detergent housing part, and steam generator 420 may be disposed above water storage tank 320.
  • steam generator 420 may be disposed at a position approximately symmetrical with water storage tank 320 with respect to a vertical plane which includes axis of rotation RX of housing tub 200.
  • water storage tank 320 and steam generator 420 may be disposed at approximately symmetrical positions with respect to axis of rotation RX of housing tub 200 or with respect to horizontal plane HP which includes axis of rotation RX.
  • water storage tank 320 and steam generator 420 are disposed at approximately symmetrical positions with respect to a vertical plane which passes the approximately center (including the center) in the longitudinal direction of casing 110. Due to such an arrangement, an inner space defined between the inner surface of casing 110 and the outer peripheral surface of housing tub 200 can be effectively used for disposing water storage tank 320 and steam generator 420.
  • FIG. 4A and FIG. 4B are schematic perspective views of the steam generating part of the steam supply mechanism of the exemplary embodiment.
  • steam generating part 400 includes casing 410 having an approximately rectangular box shape (including rectangular box shape), and steam generator 420 which is housed in casing 410.
  • Casing 410 includes: vessel portion 411 which has bottom wall portion 414 and houses steam generator 420; and lid portion 412 which is constituted of upper wall 415 covering vessel portion 411 and lid portion peripheral wall 416 on which projecting member 417 is formed. That is, steam generating part 420 is covered by casing 410.
  • Steam generator 420 is connected to pump 330 by way of connection tube 421 and a tube (not shown in the drawing), and is connected to steam communication tube 340 by way of discharge tube 422. Opening portion 413 is formed on bottom wall portion 414 of vessel portion 411. Connection tube 421 and discharge tube 422 are formed such that connection tube 421 and discharge tube 422 project downward through opening portion 413.
  • FIG. 5A the mounting structure for mounting steam generating part 400 of steam supply mechanism 300 on casing 110 of washing machine 100 is described using FIG. 5A by also referencing FIG. 3 and FIG. 4A .
  • FIG. 5A is a schematic perspective view of the mounting structure for connecting the lid portion and the casing of the steam generating part of this exemplary embodiment to each other.
  • casing 110 is constituted of at least: front wall 111; rear wall 112; right wall 115 which is formed in a raised manner between front wall 111 and rear wall 112; and left wall 116 which is formed opposite to right wall 115.
  • Casing 110 further includes first reinforcing frame 117 which is disposed along an upper edge of right wall 115, and second reinforcing frame 118 which is disposed along an upper edge of front wall 111.
  • lid portion 412 which forms a portion of steam generating part 400 includes: upper wall 415 having an approximately rectangular shape (including a rectangular shape); lid portion peripheral walls 416 which project downward (toward a casing 410 side) from edge portions of upper wall 415; and projecting member 417 which projects frontward (toward a front wall 111 side of casing 110) from lid portion peripheral wall 416.
  • first reinforcing frame 117 which is mounted on casing 110 of washing machine 100 and upper wall 415 of lid portion 412 of steam generating part 400 are connected to each other by first mounting member 151 shown at an upper right side of FIG. 5A .
  • second reinforcing frame 118 and projecting member 417 are connected to each other by second mounting member 152 shown at an upper left side of FIG. 5A .
  • lid portion 412 of steam generating part 400 and casing ceiling wall 113 of casing 110 are mounted in a spaced-apart manner from each other by way of first mounting member 151 and second mounting member 152 which are mounted on lid portion 412 in an upwardly projecting manner.
  • first mounting member 151 and second mounting member 152 which are mounted on lid portion 412 in an upwardly projecting manner.
  • FIG. 5B the structure of steam generating part 400 of steam supply mechanism 300, particularly lid portion 412 and steam generator 420 which is housed in casing 410 by way of spacer 451 are described using FIG. 5B . Further, the constitution of steam generator 420 of steam generating part 400 of steam supply mechanism 300 is described using FIG. 6A and FIG. 6B .
  • FIG. 5B is a schematic perspective view showing the exploded structure of the steam generating part in the exemplary embodiment.
  • FIG. 6A and FIG. 6B are schematic perspective views of the steam generator of the steam generating part of the embodiment.
  • steam generator 420 is constituted of: body portion 423 having an approximately rectangular shape (including a rectangular shape); lid portion 424 which is disposed on body portion 423; and a linear heater 425 such as a sheathed heater which is disposed inside body portion 423 through peripheral surface 428 of body portion 423, for example.
  • body portion 423 and lid portion 424 are formed using a material such as aluminum, for example, having higher thermal conductivity than a material for forming spacer 451 described later. Due to such a constitution, body portion 423 and lid portion 424 are efficiently and properly heated by heater 425.
  • thermister 426 is further mounted on body portion lower surface 427 of body portion 423 of steam generator 420.
  • connection tube 421 and discharge tube 422 are also mounted on body portion 423 which constitutes steam generator 420.
  • Heater 425 is controlled based on temperature information obtained by thermister 426. Due to such a control, a temperature of body portion 423 and a temperature of lid portion 424 are held at approximately fixed temperatures (including fixed temperatures). A thermostat which controls the turning on and off of electricity power to heater 425 at a predetermined temperature may be used in place of thermister 426. In this case, the substantially the same effect can be obtained.
  • steam generator 420 is mounted on casing 410 by way of spacer 451. That is, steam generator 420 and casing 410 are mounted in a spaced-apart manner from each other by way of spacer 451. That is, steam generator 420 becomes a high temperature by being heated by heater 425.
  • heat generated by steam generator 420 is minimally transferred to casing 410.
  • the increase of a temperature of casing 410 can be suppressed and hence, safety and reliability of clothing treatment device can be enhanced.
  • Spacer 451 may preferably be a hollow cylindrical shape. Accordingly, the heat conduction of heat generated by steam generator 420 to casing 410 can be further decreased. As a result, the increase of the temperature of casing 410 can be further suppressed. Further, by forming spacer 451 into a circular cylindrical shape, spacer 451 can acquire sufficient mechanical strength even when a wall thickness of spacer 451 is small and, at the same time, the thermal conduction can be further decreased.
  • spacer 451 As a material used for forming spacer 451, it is preferable to use a material such as iron or stainless steel, for example, having lower thermal conductivity than a material used for forming steam generator 420 such as aluminum, for example.
  • a material used for forming steam generator 420 such as aluminum, for example.
  • body portion 423 which constitutes steam generator 420 is described using FIG. 6B and FIG. 7 .
  • FIG. 7 is a schematic perspective view of the body portion of the steam generator of this exemplary embodiment.
  • body portion 423 includes body portion lower surface 427, peripheral surface 428, and upper surface 429.
  • Thermister 426, connection tube 421 and discharge tube 422 are mounted on body portion lower surface 427, wherein connection tube 421 and discharge tube 422 are mounted on body portion lower surface 427.
  • Heater 425 is disposed on peripheral surface 428.
  • body portion 423 is formed on upper surface 429 in a raised manner toward lid portion 424 which constitutes one side of steam generator 420 thus forming chamber space 430 having an approximately triangular shape (including a triangular shape), for example.
  • Chamber space 430 is formed in such a manner that the chamber space 430 is defined by outer chamber wall 431 and inner chamber wall 432 having an approximately J shape (including a J shape), for example, which defines a steam flow passage inside chamber space 430.
  • FIG. 8 is a schematic developed perspective view of the steam generator of this exemplary embodiment.
  • FIG. 9 is a schematic perspective view of the lid portion of the steam generator of this exemplary embodiment.
  • steam generator 420 includes packing ring 433 made of a heat-resistance rubber or the like, for example, which is mounted on body portion 423 in a state where the steam generator 420 surrounds outer chamber wall 431.
  • lid body 424 includes lower surface 434 which faces body portion 423, and shield wall 435 which has the substantially same shape (including the same shape) as outer chamber wall 431 of body portion 423.
  • lid portion 424 By pushing lid portion 424 to body portion 423, shield wall 435 of lid portion 424 compresses packing ring 433. As a result, air-tightness of chamber space 430 of steam generator 420 is maintained.
  • Inlet port 437 is formed in body portion 423. Inlet port 437 is formed so as to allow water supplied through connection tube 421 connected to body portion lower surface 427 to flow into the inside of chamber space 430. Inlet port 437 is formed at the approximately center of chamber space 430, and the periphery of inlet port 437 is surrounded by inner chamber wall 432.
  • Steam generator 420 of this exemplary embodiment is constituted as described above.
  • steam generator 420 when a predetermined amount of water is supplied to steam generator 420 from water storage tank 320 by pump 330, water is injected upward (toward a lid portion 424 side) through connection tube 421 and inlet port 437. Water injected into chamber space 430 of steam generator 420 impinges on inner chamber wall 432, upper surface 429 of body portion 423 surrounded by inner chamber wall 432 and/or lower surface 434 of lid portion 424 which is positioned above inlet port 437. At this point of time, steam generator 420 is heated by heater 425 (for example, approximately 200°C) thus having high thermal energy.
  • heater 425 for example, approximately 200°C
  • the water supply operation is performed intermittently using pump 330 of steam supply mechanism 300 so that a proper amount of water is supplied into the inside of chamber space 430 of steam generator 420 (for example, approximately 2cc/time). Accordingly, water injected upward from inlet port 437 of steam generator 420 is instantaneously evaporated by thermal energy which steam generator 420 possesses.
  • an inner pressure of chamber space 430 is sharply increased.
  • An impurity which is contained in water supplied to steam generator 420 adheres to or precipitates on the wall surface which constitutes chamber space 430 when water evaporates.
  • the adhered or precipitated impurity receives an action of pressure generated by the sharp rise of an inner pressure of chamber space 430 at the time of evaporation of water. As a result, the impurity is easily discharged outside chamber space 430.
  • FIG. 10 is a schematic plan view of the body portion of the steam generator of this exemplary embodiment.
  • heater 425 is disposed so as to extend along an approximately U-shape (including a U-shape) passage formed inside body portion 423. Due to such an arrangement, heater 425 surrounds inlet port 437 to which connection tube 421 is mounted. Accordingly, a temperature of inner chamber wall 432 and a temperature of a region surrounded by inner chamber wall 432 become the highest temperature inside chamber space 430 due to heating by heater 425. As a result, water injected into the inside of chamber space 430 through inlet port 437 is instantaneously evaporated.
  • Inner chamber wall 432 is disposed inside chamber space 430 defined by outer chamber wall 431 in a state where inner chamber wall 432 extends in an approximately J-shape. That is, a spiral-shaped flow passage is formed in the chamber space 430 by inner chamber wall 432.
  • Discharge port 438 is formed in body portion 423 at a position in the vicinity of a terminal end of the flow passage through which water or steam passes. Due to such a constitution, steam generated in the space surrounded by inner chamber wall 432 moves toward discharge port 438 along with the increase of an inner pressure of chamber space 430. Then, steam which arrives at discharge port 438 is discharged downward in the vertical direction through discharge tube 422 mounted on discharge port 438.
  • Heater 425 is disposed such that heater 425 extends in an approximately U-shape (including a U-shape) along an outside passage of the spiral-shaped flow passage. Due to such a constitution, steam generated in the space surrounded by inner chamber wall 432 moves toward discharge tube 422 while being heated. Accordingly, high-temperature steam is discharged from discharge tube 422 of steam generator 420.
  • FIG. 11 the constitution and the operation of the water supply mechanism of the washing machine of the exemplary embodiment of the present invention are described using FIG. 11 .
  • FIG. 11 is a schematic view of the water supply mechanism of the steam supply mechanism of this exemplary embodiment.
  • water supply mechanism 500 which injects water to chamber space 430 of steam generator 420 includes water supply valve 310, water storage tank 320, pump 330, connection tube 421, water level sensor 321 for measuring a water level in water storage tank 320 all of which are described previously.
  • Water supply valve 310 performs the supply of water to water storage tank 320 or the cutting off of the supply of water to water storage tank 320 corresponding to a water level detected by water level sensor 321.
  • Water supply valve 310 may be controlled corresponding to an operation time and/or an operation pattern (an intermittent water supply operation and/or a continuous water supply operation) of pump 330. For example, an amount of water supplied from water supply valve 310 may be adjusted such that water storage tank 320 becomes empty when an operation of pump 330 is finished. Due to such a constitution, even when an outside air temperature becomes low, water in water storage tank 320 is minimally frozen. As a result, the reliability of washing machine 100 can be further enhanced.
  • Pump 330 supplies water stored inside water storage tank 320 to chamber space 430 of steam generator 420 through connection tube 421.
  • a supply amount, a supply time, a supply interval and the like are adjusted such that water injected into the inside of chamber space 430 is instantaneously evaporated.
  • Discharge tube 422 of steam generator 420 is connected to steam communication tube 340. Due to such a constitution, steam generated inside chamber space 430 due to the intermittent water supply operation by pump 330 and water which flows inside chamber space 430 due to the continuous water supply operation of pump 330 can be made to flow into the housing tub 200 through discharge tube 422 and steam communication tube 340.
  • the water supply mechanism of the steam supply mechanism of washing machine 100 of this exemplary embodiment is configured as described above.
  • FIG. 12 the operation of supplying steam and water to be supplied to the housing tub of the washing machine of the exemplary embodiment of the present invention is described using FIG. 12 by also referencing FIG. 1 and FIG. 11 .
  • FIG. 12 is a schematic back view of a front portion of the housing tub of the washing machine of this exemplary embodiment.
  • annular portion 224 of front portion 222 of water tub 220 includes: inner surface 225 which faces rotary drum 210; and outer surface 226 which faces front wall 111 of casing 110.
  • FIG. 12 mainly shows inner surface 225 of annular portion 224 formed on front portion 222 of water tub 220 .
  • the above-mentioned steam supply mechanism 300 further includes: branched tube 351 which is mounted on inner surface 225; nozzle 352 which is disposed above branched tube 351; and steam tube 353 which connects branched tube 351 and nozzle 352 to each other.
  • Steam communication tube 340 is connected to branched tube 351 through peripheral wall portion 223 of water tub 220.
  • steam generated inside chamber space 430 of steam generator 420 flows into steam communication tube 340 through discharge tube 422 along with the increase of a pressure inside chamber space 430. Thereafter, the steam flows into branched tube 351 from steam communication tube 340.
  • the steam which arrives at branched tube 351 has a high temperature and hence, the steam is guided to steam tube 353 and flows into nozzle 352 disposed above branched tube 351. Lastly, the steam is injected into the inside of rotary drum 210 of housing tub 200 from nozzle 352.
  • steam generated inside chamber space 430 is guided to nozzle 352 through discharge tube 422, steam communication tube 340, branched tube 351 and steam tube 353. That is, pump 330 which performs intermittent water supply operation injects a proper amount of water into the inside of chamber space 430 which is heated by heater 425 and has a high temperature and hence, water is instantaneously evaporated. At this point of time, an inner pressure of chamber space 430 of steam generator 420 is sharply increased due to the evaporation of the water. Accordingly, generated steam is injected from nozzle 352 at a high pressure. As a result, as shown in FIG. 1 and FIG. 12 , steam is injected such that steam traverses an inner space of housing tub 200 in the vertical direction.
  • Branched tube 351 which introduces steam into steam tube 353 from steam communication tube 340 includes: main tube 354 which is connected to steam communication tube 340; upper sub tube 355 which is bent upward from main tube 354; and lower sub tube 356 which is bent downward from main tube 354. Steam or water flows into main tube 354 through steam communication tube 340. Upper sub tube 355 is connected to steam tube 353, and forms an upwardly extending passage through which steam moves toward nozzle 352.
  • lower sub tube 356 forms a downwardly extending passage.
  • the continuous water supply operation is performed by pump 330, mainly water flows into branched tube 351 through steam communication tube 340. Then, water which flows into branched tube 351 flows downward through lower sub tube 356 due to the action of gravity.
  • main tube 354 and upper sub tube 355 of branched tube 351 are connected to each other at an included angle of ⁇ 1 which is an obtuse angle, while main tube 354 and lower sub tube 356 are connected to each other at an included angle of ⁇ 2 which is an acute angle. Since the included angle ⁇ 2 is an acute angle, a flow loss from main tube 354 to lower sub tube 356 is relatively large. Accordingly, steam which flows into the inside of main tube 354 minimally flows into lower sub tube 356, and the steam mainly flows into upper sub tube 355.
  • upper sub tube 355 forms the upwardly extending flow passage and hence, due to the action of gravity, water which flows into main tube 354 minimally flows into upper sub tube 355 and the water mainly flows into lower sub tube 356.
  • the flow passage for steam and the flow passage for water can be properly separated from each other by branched tube 351.
  • FIG. 13 the intermittent operation of the pump which supplies water to the steam generating part of the washing machine of the exemplary embodiment of the present invention is described using FIG. 13 by also referencing FIG. 8 and FIG. 11 .
  • FIG. 13 is an explanatory view schematically showing the relationship between an intermittent operation by the pump of the water supply mechanism and a temperature inside the chamber space in the exemplary embodiment.
  • a period during which pump 330 is operated is set shorter than a period during which pump 330 is stopped (OFF period). Accordingly, a proper amount of water can be injected into the inside of chamber space 430 of steam generator 420 in steam generating part 400. It is needless to say that a length of the ON period and a length of the OFF period in Fig. 13 are relative values, and these lengths may be changed corresponding to a capacity of chamber space 430, an amount of heating by the heater, and a required amount of steam.
  • pump 330 supplies a predetermined amount of water to chamber space 430 in the ON period.
  • the supplied water is evaporated so as to generate steam.
  • a temperature in chamber space 430 is temporarily lowered.
  • heater 425 can sufficiently increase a temperature in chamber space 430 during the OFF period. As a result, it is possible to continue the supply of high-pressure steam to housing tub 200 during a period where pump 330 performs the intermittent operation.
  • a temperature in chamber space 430 is sufficiently increased during the OFF period. Then, in the ON period, a proper amount of water which can be evaporated instantaneously by thermal energy which steam generator 420 including chamber space 430 possesses is supplied to chamber space 430 (for example, approximately 2cc/time). Accordingly, it is possible to favorably continue the supply of high-pressure steam to housing tub 200.
  • FIG. 14 is an explanatory view schematically showing a temperature change in water supplied to the water tub of the washing machine of the exemplary embodiment.
  • hot water heater 160 for heating water supplied to the inside of water tub 220 is disposed in a lower portion of water tub 220.
  • a predetermined amount of water is supplied to water tub 220.
  • a temperature of water contained in clothing inside water tub 220 takes an approximately fixed value (including a fixed value).
  • hot water heater 160 generates a large amount of heat value and hence, a temperature of water contained in clothing inside water tub 220 is sharply increased.
  • a temperature of water reaches a predetermined temperature, heating of water inside water tub 220 is stopped.
  • washing step is carried out by introducing steam into the inside of housing tub 200 through steam supply mechanism 300.
  • a dotted line after heating is stopped shown in FIG. 14 indicates a change in temperature of water contained in clothing when the heating by hot water heater 160 is stopped so that steam is not supplied.
  • a solid line after heating is stopped indicates a change in temperature of water contained in clothing when heating by hot water heater 160 is stopped so that steam is supplied to housing tub 200.
  • high-temperature steam is directly supplied to housing tub 200 in a state where the steam is injected to clothing. Accordingly, lowering of a temperature of water contained in clothing inside water tub 220 is alleviated (suppressed) by high-temperature steam. Further, power consumption of heater 425 used in steam generator 420 is smaller than that of hot water heater 160 mounted on water tub 220. As a result, heat retention by the supply of high-temperature steam can be realized with low power consumption compared to the case where heat retention of water inside water tub 220 is performed using hot water heater 160. Accordingly, in washing step, it is preferable that high-temperature steam be supplied to the housing tub by performing intermittent water supply operation using pump 330 after hot water heater 160 is stopped.
  • rotary drum 210 is rotated at a high speed by motor 231. As shown in FIG. 1 , a large number of small holes 219 are formed in peripheral wall 211 of rotary drum 210.
  • steam is supplied to the inside of rotary drum 210 in spin-drying step. Due to such supply of steam, hydrogen bonding of fibers can be released by steam. As a result, the generation of wrinkles in clothing can be decreased.
  • step of cooling the steam generator of the exemplary embodiment of the present invention is described using FIG. 8 and FIG. 11 .
  • FIG. 15 a control of the door body of the exemplary embodiment of the present invention is described using FIG. 15 by also referencing FIG. 1 and FIG. 6B .
  • Such a control is performed for preventing door body 120 from being inadvertently opened by a user when high-temperature steam is present inside housing tub 200.
  • FIG. 15 is a block diagram schematically showing the control of the door body based on a temperature of the steam generator of this exemplary embodiment.
  • washing machine 100 of this exemplary embodiment includes: locking mechanism 121 which locks door body 120 at a closed position; and control part 122 for controlling locking using locking mechanism 121 and releasing of such locking. It is needless to say that the known structures of washing machines are utilized as mechanical and electric mechanisms used in locking mechanism 121.
  • steam generator 420 includes thermister 426.
  • thermister 426 detects a temperature of body portion 423 of steam generator 420, and outputs a signal corresponding to a detected temperature to control part 122.
  • control part 122 maintains locking of door body 120 using locking mechanism 121 until a signal outputted from thermister 426 becomes a signal corresponding to a predetermined temperature or below. Due to such an operation, until a temperature of steam generator 420 becomes a predetermined temperature or below, the inner space of housing tub 200 is isolated from the outside. As a result, it is possible to prevent a user from being exposed to high-temperature steam in advance thus realizing safe and highly reliable washing machine 100.
  • the present invention is preferably applicable to a device which processes clothing using steam.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (5)

  1. Dispositif de traitement de vêtements comprenant :
    une cuve de logement (200) pour recevoir les vêtements ; et
    un mécanisme d'alimentation en vapeur (300) pour injecter de la vapeur dans la cuve de logement (200), où
    le mécanisme d'alimentation en vapeur (300) inclut :
    un générateur de vapeur (420) ayant au moins une surface de paroi qui délimite l'espace d'une chambre (430) pour générer la vapeur, où le générateur de vapeur (420) inclut un anneau de garniture (433) ;
    un corps de chauffe (425) pour chauffer l'au moins une surface de paroi ;
    un mécanisme d'alimentation en eau (500) pour injecter de l'eau dans l'espace de la chambre (430) à travers l'au moins une surface de paroi ; et
    un boîtier (410) qui recouvre le générateur de vapeur (420), où le boîtier (410) inclut une partie réceptacle (411) qui abrite le générateur de vapeur (420) et une partie couvercle (412) qui recouvre la partie réceptacle (411),
    caractérisé en ce que le dispositif de traitement de vêtements comprend en outre :
    une entretoise (451) qui place le générateur de vapeur (420) et le boîtier (410) à distance l'un de l'autre, où
    le générateur de vapeur (420) est monté sur la partie réceptacle (411) et la partie couvercle (412) de telle manière qu'il est maintenu à distance par l'entretoise (451).
  2. Dispositif de traitement de vêtements selon la revendication 1, où l'entretoise (451) est de forme cylindrique creuse.
  3. Dispositif de traitement de vêtements selon la revendication 1, où une conductivité thermique d'un matériau utilisé pour former l'entretoise (451) est inférieure à une conductivité thermique d'un matériau utilisé pour former le générateur de vapeur (420).
  4. Dispositif de traitement de vêtements selon les revendications 1 à 3, où le mécanisme d'alimentation en eau (500) ajuste une quantité d'eau de telle manière que l'eau qui atteint l'au moins une surface de paroi de l'espace de la chambre (430) s'évapore instantanément.
  5. Dispositif de traitement de vêtements selon l'une quelconque des revendications 1 à 4, où le mécanisme d'alimentation en eau (500) alimente l'espace de la chambre (430) en eau de manière intermittente.
EP13807422.4A 2012-06-22 2013-06-18 Dispositif de traitement de vêtements Active EP2840180B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201330820T SI2840180T1 (sl) 2012-06-22 2013-06-18 Naprava za obdelavo oblačil

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012140493A JP2014004059A (ja) 2012-06-22 2012-06-22 衣類処理装置
PCT/JP2013/003779 WO2013190826A1 (fr) 2012-06-22 2013-06-18 Dispositif de traitement de vêtements

Publications (3)

Publication Number Publication Date
EP2840180A1 EP2840180A1 (fr) 2015-02-25
EP2840180A4 EP2840180A4 (fr) 2015-05-20
EP2840180B1 true EP2840180B1 (fr) 2017-08-09

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EP (1) EP2840180B1 (fr)
JP (1) JP2014004059A (fr)
CN (1) CN104395521B (fr)
SI (1) SI2840180T1 (fr)
WO (1) WO2013190826A1 (fr)

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CN113684651B (zh) * 2021-08-30 2023-12-15 无锡小天鹅电器有限公司 蒸汽发生器、衣物处理装置及其前支撑组件

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10122209A (ja) * 1996-10-16 1998-05-12 Ishikawajima Harima Heavy Ind Co Ltd 断熱締結装置

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US8424346B2 (en) 2005-05-23 2013-04-23 Lg Electronics Inc. Structure of water level sensor for steam generator in drum washing machine
KR100672490B1 (ko) * 2006-04-13 2007-01-24 엘지전자 주식회사 의류처리 장치용 스팀발생기와 이를 이용한 의류처리 장치
US20080155757A1 (en) * 2006-12-29 2008-07-03 Jong Seok Kim Method for controlling a fabric treatment apparatus
JP2009213693A (ja) * 2008-03-11 2009-09-24 Toshiba Corp ドラム式洗濯機
PL2267209T3 (pl) * 2009-06-25 2012-05-31 Miele & Cie Urządzenie do wytwarzania pary dla maszyny do traktowania prania oraz maszyna do traktowania prania
JP2011092540A (ja) * 2009-10-30 2011-05-12 Sharp Corp 洗濯機
AU2011224948B2 (en) * 2010-03-12 2014-04-24 Lg Electronics Inc. Steam generator and washing machine having the same

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Publication number Priority date Publication date Assignee Title
JPH10122209A (ja) * 1996-10-16 1998-05-12 Ishikawajima Harima Heavy Ind Co Ltd 断熱締結装置

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Publication number Publication date
EP2840180A1 (fr) 2015-02-25
EP2840180A4 (fr) 2015-05-20
SI2840180T1 (sl) 2017-12-29
CN104395521A (zh) 2015-03-04
WO2013190826A1 (fr) 2013-12-27
CN104395521B (zh) 2017-06-30
JP2014004059A (ja) 2014-01-16

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