WO2015078512A1 - Appareil d'injection de vapeur destiné à être utilisé dans un sèche-linge vapeur et sèche-linge vapeur mettant en œuvre ledit appareil - Google Patents

Appareil d'injection de vapeur destiné à être utilisé dans un sèche-linge vapeur et sèche-linge vapeur mettant en œuvre ledit appareil Download PDF

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Publication number
WO2015078512A1
WO2015078512A1 PCT/EP2013/075086 EP2013075086W WO2015078512A1 WO 2015078512 A1 WO2015078512 A1 WO 2015078512A1 EP 2013075086 W EP2013075086 W EP 2013075086W WO 2015078512 A1 WO2015078512 A1 WO 2015078512A1
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WO
WIPO (PCT)
Prior art keywords
steam
injection apparatus
chamber
outlet port
steam injection
Prior art date
Application number
PCT/EP2013/075086
Other languages
English (en)
Inventor
Onur ERCAN
Can Sar
Onur Ozdemir
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to EP13798334.2A priority Critical patent/EP3074563A1/fr
Priority to PCT/EP2013/075086 priority patent/WO2015078512A1/fr
Publication of WO2015078512A1 publication Critical patent/WO2015078512A1/fr

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
    • F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
    • F16T1/34—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers without moving parts other than hand valves, e.g. labyrinth type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/26—Steam-separating arrangements
    • F22B37/28—Steam-separating arrangements involving reversal of direction of flow

Definitions

  • the present invention relates to a steam injection apparatus for use in a household appliance, in particular a steam laundry washer or a steam laundry dryer.
  • the present invention particularly relates to a steam injection apparatus that separates a pressurized water/steam mixture which is supplied from a steam generator into condense water and steam, and selectively discharges the pressurized steam into a drum which holds the laundry.
  • the clothes are dried either by hanging them on a clothesline or alternatively by placing them into a laundry dryer which dehumidifies the clothes by treating them with heat.
  • the clothes In both cases the clothes generally develop wrinkles and creases as they are dried.
  • the formation of wrinkles depend on several factors, including the material of the cloth and the physical conditions governing the drying process, such as heat and water as well as any strain acting on the clothes. It is common practice to utilize heat and steam to remove the wrinkles and the creases from the clothes. Therefore, irons are generally provided with steam injection facilities to smooth out the wrinkles and the creases.
  • a steam laundry dryer is generally provided with a conventional steam generator for ejecting steam into the drum which holds the clothes.
  • the steam is typically injected at a final stage of the drying process.
  • the steam application is not limited to a specific stage of the drying process.
  • steam has a sanitizing effect. For instance, steam enables removal of odors and the like. Therefore, in a laundry dryer, steam can also be reasonably applied at an initial stage or an intermediate stage of the drying process to achieve the aforementioned effects.
  • a problem with the application of steam is that a steam generator produces under abnormal operation conditions a mixture of water and steam rather than pure steam. If the water/steam mixture is injected into the drum, the humidity of the clothes increases. Consequently, a dryness level of the clothes can substantially deviate from the preset dryness level. In addition, hot water droplets in the water/steam mixture can easily worsen the appearance of textiles and/or even cause damage to more sensitive textiles. Therefore, the water/steam mixture must be separated into its component phases, namely into condense water and steam prior to selectively injecting the steam into the drum.
  • EP 1 959 048 A1 discloses a clothes drying machine with a vapor injection arrangement.
  • the vapor injection arrangement includes an injection cell arranged on an inner surface of a loading aperture of the drum.
  • the cell has a first port, a second port, and an ejection window.
  • the first port is connected to a boiler that delivers steam into the cell.
  • the second port drains the liquid which is formed inside the cell into a container.
  • the ejection window ejects the gas/vapor inside the cell into the drum.
  • An objective of the present invention is to provide a steam injection apparatus for use in steam laundry washer which overcomes the aforementioned problems of the prior art and which reliably separates a pressurized water/steam mixture into condense water and steam even in case of a relatively high throughput and which is also compact, space-saving and cost-effective.
  • the phase separating chamber has a concave deflective portion for separating the pressurized water/steam mixture into condense water and pressurized steam.
  • the concave deflective portion has a concave surface.
  • the concave side of the surface is arranged to oppose the inlet port which intakes the pressurized water/steam mixture from a steam generator.
  • the inlet port is configured to direct the pressurized water/steam mixture onto the concave side of the surface.
  • the concave surface Due to the concave geometry of the deflective portion, the concave surface has an area which is relatively larger in comparison to that of a hypothetical flat surface located at a same solid angle. Therefore, the present geometry of the concave deflective portion effectively increases a rate of condensation of the instable gaseous molecules i.e., the relatively colder gaseous molecules which impinge on the concave surface. In addition, the water/steam mixture directed onto the concave deflective portion is firmly forced to move towards a center of the concave surface which corresponds to a deepest location in the convey direction. Thus, an interaction among the instable gaseous molecules as well as an interaction between the instable gaseous molecules and the condensate is effectively increased.
  • the condensation process of the instable gaseous molecules is further promoted.
  • the gaseous molecules injected to an outside of the chamber are sufficiently stable, i.e., relatively hot, and are prevented from condensing on the clothes.
  • the water/steam mixture can be effectively separated into its different phases even at relatively high throughputs.
  • the concave surface is spherical.
  • the specific geometry of the concave surface is not limited to a particular shape.
  • the concave surface is, for example, parabolic. Oval shapes may also be used.
  • the speed of the water/steam mixture is increased within the inlet port by a reduced-diameter portion.
  • the phase separation efficiency is further improved.
  • the chamber is configured by three major individual parts, including a lower part, an upper part and a guiding part.
  • the lower part and the upper part respectively configure a lower side of the chamber and an upper side of the chamber which together enclose a cavity for the phase separation.
  • the guiding part is detachably connectable to an outlet port branching off the chamber for discharging the pressurized steam to an outside.
  • the guiding part has a through-channel which deflects the discharged steam towards a bottom region of the drum. Thereby, the clothes closer to the bottom of the drum can also be sufficiently treated with steam.
  • the three-part configuration of the steam injection apparatus facilitates manufacturing and assembly thereof.
  • the lower part and the upper part are made of thermoplastic materials which are connectable by a welding joint.
  • a mechanical engagement involving a sealing member can be used.
  • the steam laundry dryer has a front bearing plate.
  • the steam injection apparatus is provided with means for detachably mounting the same onto the front bearing plate.
  • the guiding part also functions as a sealing member which is seated at an interface between the front bearing plate of the steam laundry dryer and the steam outlet port of the chamber.
  • the guiding part is made from a heat resistant and resilient material.
  • the steam outlet port of the chamber is configured by a steam outlet conduit which has a constant-diameter portion. Thereby, any disturbances in the flow of the steam are prevented.
  • the pressurized water/steam mixture can be effectively separated into pressurized steam and condense water wherein the latter can be drained to prevent the clothes from getting excessively wet.
  • a proper amount of steam can be precisely injected into the drum. Thereby, an energy efficiency of the steam laundry dryer has been improved.
  • Figure 1 – is a schematic perspective view of a steam injection apparatus according to an embodiment of the present invention
  • Figure 2 – is a schematic cross sectional view of a steam injection apparatus according to an embodiment of the present invention
  • Figure 3 – is another schematic cross sectional view of a steam injection apparatus according to an embodiment of the present invention.
  • the steam injection apparatus (1) is suitable for use in a household appliance, in particular a steam laundry dryer (2) (Figs. 1 to 3).
  • the steam injection apparatus (1) has a chamber (3) which encloses a cavity, an inlet port (4) which conveys a pressurized water/steam mixture into the chamber (3), a first outlet port (5) which drains water out of the chamber (3) and a second outlet port (6) which discharges the pressurized steam out of the chamber (3) (Fig. 1).
  • the first outlet port (5) and the second outlet port (6) are in fluid communication with the inlet port (4) (Fig. 2).
  • the chamber (3) has a concave deflective portion (7) for separating the water/steam mixture (Fig. 2).
  • the concave deflective portion (7) has a concave surface (8) (Fig. 2).
  • the concave side of the surface (8) is arranged so as to oppose the inlet port (4) (Fig. 2).
  • the inlet port (4) is configured to direct the pressurized water/steam mixture onto the concave side of the surface (8) (Fig. 2).
  • the relatively colder molecules in the gaseous state immediately start to condense.
  • the condensate which deposits on the concave surface (8) flows, under the action of gravity, towards a lowest point of the chamber (3) from where it is subsequently drained via the first outlet port (5) to an outside of the chamber (3).
  • the relatively hotter molecules in the gaseous state are, however, deflected from the concave deflective portion (7) into the chamber (3) without undergoing condensation.
  • the pressurized steam deflected from the concave surface (8) fills the entire cavity enclosed by the chamber (3).
  • the steam inside the chamber (3) Due to the overpressure created by the steam generator (not shown), the steam inside the chamber (3) is maintained at a pressure level which is relatively higher than that of the atmospheric pressure level. Therefore, the steam inside the chamber (3) can be jetted to an outside of the chamber (3) from the second outlet portion (6) onto the clothes.
  • the concave surface (8) is a spherical surface. In an alternative embodiment, the concave surface (8) is a parabolic surface.
  • the inlet port (4) is configured by an inlet conduit (9) (Fig. 2).
  • the inlet conduit (9) has a reduced-diameter portion (10) (Fig. 2). Due to the reduced-diameter portion (10), the pressurized water/steam mixture can be conveyed into the chamber (3) with an increased flow speed. Thereby, the phase separation efficiency is further improved.
  • the inlet conduit (9) has a truncated cone-shaped portion (11) (Fig. 2).
  • the truncated cone-shaped portion (11) is located on an upstream side of the reduced-diameter portion (10) (Fig. 2). Thereby, the diameter of the inlet conduit (9) is smoothly constricted towards the reduced-diameter portion (10) (Fig. 2).
  • the first outlet port (5) is configured by a first outlet conduit (12).
  • the first outlet port (5) is formed into a lower side of the chamber (3) (Fig. 2).
  • the first outlet conduit (12) has a funnel-shaped portion (13) (Figs. 1 to 3).
  • the condensate inside the chamber (3) is rapidly drained off.
  • the drained off condensate is preferably returned to the steam regenerator (not shown).
  • the second outlet port (6) is configured by a second outlet conduit (14) (Figs. 2 to 3).
  • the second outlet port (6) is formed into an upper side of the chamber (3) (Figs. 1 to 3).
  • the second outlet conduit (14) has a substantially constant-diameter portion (15) (Figs. 2 to 3). Thereby, any disturbances in the flow of the pressurized steam are prevented.
  • the constant-diameter portion (15) is horizontally aligned (Figs. 2 to 3).
  • the second outlet conduit (14) is formed perpendicular to the inlet port (4), in particular the inlet conduit (9) (Figs. 1 to 3). Thereby, the water/steam mixture is prevented from straightly passing through the chamber (3).
  • the concave deflective portion (7) is formed into an upper side of the chamber (3) (Fig. 2).
  • the inlet portion (4) is formed into a lower side of the chamber (3) (Figs. 1 to 3).
  • the concave deflective portion (7) is located slightly off the inlet portion (4) in the horizontal direction (Fig. 2).
  • the inlet port (4) directs the pressurized water/steam mixture obliquely upwards onto a center portion of the concave side of the surface (8) (Fig. 2). Thereby, the dripping condensate and the deflected steam do not interfere with the inlet port (4).
  • the first outlet port (5) is located substantially straight below the concave side of the surface (8) (Fig. 2). Thereby, the condensate rapidly reaches the first outlet port (5).
  • the chamber (3) has a wedge-shaped portion (16) which partitions the chamber (3) into a first subchamber (17) and a second subchamber (18) (Fig. 2).
  • the first subchamber (17) and the second subchamber (18) are in fluid communication (Fig. 2).
  • the wedge-shaped portion (17) is formed between the concave surface (8) and the second outlet port (6) (Fig. 2). Thereby, the wedge-shaped portion obstructs a straight flow path between the concave surface (8) and the second outlet port (6).
  • a tip of the wedge-shaped portion (16) is located substantially straight above the first outlet port (5) (Fig. 2). Thereby the condensate which is deposited on the concave surface (8) flows along the lateral surface of the wedge-shaped portion (16) towards the first outlet port (5).
  • the chamber (3) is configured by a lower part (19), an upper part (20) and a guiding part (21). These are separately provided from each other and are assembled with each other prior to mounting to the steam laundry dryer (2) (Figs. 1 to 3).
  • the lower part (19) and the upper part (20) respectively configure a lower side of the chamber (3) and an upper side of the chamber (3) (Figs. 1 to 3).
  • the guiding part (21) is detachably connectable to the second outlet port (6) (Fig. 3).
  • the guiding part (21) has a through-channel (22) which deflects the discharged steam obliquely downwards (Fig. 3).
  • the lower part (19) and upper part (20) are each made of thermoplastic material.
  • the lower part (19) and upper part (20) are connected by a welding joint.
  • the steam injection apparatus (1) of the present invention has a slim configuration and is particularly compact and space-saving.
  • the lower part (19) and upper part (20) are mechanically connected by an engagement means.
  • a seal (not shown) is arranged between the lower part (19) and upper part (20).
  • the guiding part (21) includes a flange portion (23) which is seated at an interface between the second outlet port (6) and an aperture (24) that is formed into a front bearing plate (25) of the steam laundry dryer (2) (Fig. 3).
  • the guiding part (21) further includes a first insert portion (26) and a second insert portion (Fig. 3).
  • the first insert portion (26) is insertable into the second outlet port (6).
  • the second insert portion (27) is insertable into the aperture (24) (Fig. 3).
  • the through-channel (22) is formed into the first insert potion (26) and the second insert portion (27) (Fig. 3).
  • the steam laundry dryer (2) has a drum (28) for holding the laundry to be dried and a steam generator (not shown) for generating a pressurized water/steam mixture (Figs. 2 to 3).
  • the steam laundry dryer (2) also has the steam injection apparatus (1) of the present invention (Figs. 2 to 3).
  • the inlet port (4) of the steam injection apparatus (1) is fluidly connected to an outlet port (not shown) of the steam generator.
  • the second outlet port (6) of the steam injection apparatus (1) is arranged to open into the drum (28) (Figs. 2 to 3).
  • the steam laundry dryer (2) has a front bearing plate (25) (Figs. 2 to 3).
  • the steam injection apparatus (1) is detachably mounted onto the front bearing plate (25) (Figs. 1 to 3).
  • the guiding part (21) is arranged to deflect the discharged steam obliquely downwards to a bottom of the drum (28). Thereby, the clothes closer to the bottom of the drum (28) can also be sufficiently treated with steam.
  • the pressurized water/steam mixture can be effectively separated to obtain a pure burst of steam for treating the clothes. This prevents the clothes from getting excessively wet and reduces energy consumption.
  • the steam injection apparatus of the present invention is intended for removing wrinkles and creases from clothes. However the use of the steam injection apparatus of the present invention is not limited to the aforementioned application.
  • the steam injection apparatus of the present invention is also intended for removing odors and sanitizing clothes.
  • the steam injection apparatus of the present invention is also intended for use in other household appliances.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

La présente invention concerne un appareil d'injection de vapeur (1) pouvant être utilisé dans un appareil électroménager, et plus particulièrement dans un sèche-linge à vapeur (2). L'appareil d'injection de vapeur (1) comprend une chambre (3) qui entoure une cavité, un port d'admission (4) qui transporte un mélange eau/vapeur sous pression dans la chambre (3), un premier port d'évacuation (5) qui draine l'eau hors de la chambre (3) et un second port d'évacuation (6) qui libère la vapeur hors de la chambre (3). Le premier port d'évacuation (5) et le second port d'évacuation (6) sont en communication fluidique avec le port d'admission (4). Dans l'appareil d'injection de vapeur (1) de la présente invention, la chambre (3) comprend une partie déflectrice concave (7) permettant de séparer le mélange eau/vapeur en phases séparées, soit l'eau condensée et la vapeur. La partie déflectrice concave (7) comprend une surface concave (8). Le côté concave de la surface (8) est placé à l'opposé du port d'admission (4). Le port d'admission (4) est conçu pour diriger le mélange eau/vapeur sous pression sur le côté concave de la surface (8).
PCT/EP2013/075086 2013-11-29 2013-11-29 Appareil d'injection de vapeur destiné à être utilisé dans un sèche-linge vapeur et sèche-linge vapeur mettant en œuvre ledit appareil WO2015078512A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13798334.2A EP3074563A1 (fr) 2013-11-29 2013-11-29 Appareil d'injection de vapeur destiné à être utilisé dans un sèche-linge vapeur et sèche-linge vapeur mettant en oeuvre ledit appareil
PCT/EP2013/075086 WO2015078512A1 (fr) 2013-11-29 2013-11-29 Appareil d'injection de vapeur destiné à être utilisé dans un sèche-linge vapeur et sèche-linge vapeur mettant en œuvre ledit appareil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/075086 WO2015078512A1 (fr) 2013-11-29 2013-11-29 Appareil d'injection de vapeur destiné à être utilisé dans un sèche-linge vapeur et sèche-linge vapeur mettant en œuvre ledit appareil

Publications (1)

Publication Number Publication Date
WO2015078512A1 true WO2015078512A1 (fr) 2015-06-04

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PCT/EP2013/075086 WO2015078512A1 (fr) 2013-11-29 2013-11-29 Appareil d'injection de vapeur destiné à être utilisé dans un sèche-linge vapeur et sèche-linge vapeur mettant en œuvre ledit appareil

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EP (1) EP3074563A1 (fr)
WO (1) WO2015078512A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017152947A1 (fr) 2016-03-08 2017-09-14 Arcelik Anonim Sirketi Appareil de traitement de linge avec protection contre la corrosion et sécurité améliorées

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189726920A (en) * 1897-11-17 1898-07-09 William Lewy Improvements in Apparatus for Separating Water Particles from Steam.
FR904913A (fr) * 1943-07-27 1945-11-20 Séparateur d'eau de condensation
EP1959048A1 (fr) 2007-02-15 2008-08-20 Electrolux Home Products Corporation N.V. Machine de séchage de vêtements avec arrangement amélioré d'injection de vapeur
EP2287389A1 (fr) * 2009-08-18 2011-02-23 BSH Bosch und Siemens Hausgeräte GmbH Agencement d'injection de vapeur à utiliser dans un appareil de traîtment du linge et un appareil de traîtment du linge
EP2610394A1 (fr) * 2011-12-28 2013-07-03 Electrolux Home Products Corporation N.V. Appareil domestique de séchage du linge doté d'une unité de buse à vapeur
EP2610391A1 (fr) * 2011-12-28 2013-07-03 Electrolux Home Products Corporation N.V. Appareil domestique pour sécher le linge doté d'une unité de buse de vapeur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189726920A (en) * 1897-11-17 1898-07-09 William Lewy Improvements in Apparatus for Separating Water Particles from Steam.
FR904913A (fr) * 1943-07-27 1945-11-20 Séparateur d'eau de condensation
EP1959048A1 (fr) 2007-02-15 2008-08-20 Electrolux Home Products Corporation N.V. Machine de séchage de vêtements avec arrangement amélioré d'injection de vapeur
EP2287389A1 (fr) * 2009-08-18 2011-02-23 BSH Bosch und Siemens Hausgeräte GmbH Agencement d'injection de vapeur à utiliser dans un appareil de traîtment du linge et un appareil de traîtment du linge
EP2610394A1 (fr) * 2011-12-28 2013-07-03 Electrolux Home Products Corporation N.V. Appareil domestique de séchage du linge doté d'une unité de buse à vapeur
EP2610391A1 (fr) * 2011-12-28 2013-07-03 Electrolux Home Products Corporation N.V. Appareil domestique pour sécher le linge doté d'une unité de buse de vapeur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017152947A1 (fr) 2016-03-08 2017-09-14 Arcelik Anonim Sirketi Appareil de traitement de linge avec protection contre la corrosion et sécurité améliorées

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