WO2018086955A1 - A washing machine with reduced energy consumption - Google Patents

A washing machine with reduced energy consumption Download PDF

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Publication number
WO2018086955A1
WO2018086955A1 PCT/EP2017/077845 EP2017077845W WO2018086955A1 WO 2018086955 A1 WO2018086955 A1 WO 2018086955A1 EP 2017077845 W EP2017077845 W EP 2017077845W WO 2018086955 A1 WO2018086955 A1 WO 2018086955A1
Authority
WO
WIPO (PCT)
Prior art keywords
tub
insulation member
washing machine
water
drum
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.)
Ceased
Application number
PCT/EP2017/077845
Other languages
French (fr)
Inventor
Cem HIZLI
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 AS filed Critical Arcelik AS
Publication of WO2018086955A1 publication Critical patent/WO2018086955A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • 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
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups

Definitions

  • the present invention relates to a washing machine whose energy consumption is reduced by enhancing its insulation efficiency.
  • the washing water In washing machines, the washing water is generally heated to a certain temperature in order to enhance the cleaning efficiency and to dissolve the detergent completely. In washing machines, the highest energy consumption occurs during heating of water. However, a major portion of the energy used to heat water is transmitted to the tub, and is lost by being transmitted to the outer environment due to the inconvenient thermal properties of the material the tub is made of. Therefore, the amount of energy and time spent to bring the washing water to a certain temperature, increases.
  • Applications in which the tub or the drum is clad by insulation materials are present in the state of the art. However, the materials clad on the tub cannot prevent thermal energy loss efficiently as they draw a certain amount heat from the tub.
  • German patent document no. DE10160788 discloses a thermal insulation member clad on the inner surface of the drum so as to stay under a protecting layer.
  • the aim of the present invention is to realize a washing machine with improved heat insulation efficiency.
  • the washing machine realized to achieve the aim of the present invention and disclosed in the claims, has a body, a tub provided in the body in which the washing water is filled, and a drum provided in the tub, in which the laundry is placed.
  • the washing machine of the invention comprises an insulation member made of hydrophilic material, fixed on the tub so as to cover the inner surface of the tub at least partially, enabling formation of a thermal boundary layer on the inner wall of the tub by entrapping the washing water in the tub. By this, the thermal energy loss of the drum is effectively reduced.
  • the insulation member is made of a material comprising gas cells.
  • the gas cells filed with gases preferably with low thermal conduction coefficient, enable keeping the thermal energy inside the tub, increasing the efficiency of insulation.
  • the insulation member covers the inner wall of the tub up to the maximum level reached by the water filled in the tub.
  • the insulation member is placed on the surfaces of the tub contacting water, providing a cost advantage.
  • the thickness of the portions of the insulation member being opposed to the heater is reduced so as to obtain a thinner insulation layer.
  • a plurality of fixing means are provided on the inner surface of the tub, and the insulation member has a plurality of bores through which the fixing means penetrate. The insulation member is thus easily fixed to the inner wall of the tub.
  • the insulation member is fixed to the inner wall of the tub by being adhered by means of a thermal and water resistant adhesive.
  • a further insulation layer is formed between the tub and water, reducing the amount of heat transferred from water to the tub.
  • Figure 1 is a schematic view of the washing machine of the invention.
  • Figure 2 is a partial schematic view of an insulation member according to an embodiment of the invention.
  • Figure 3 is a partial schematic view of the insulation member and the fixing means according to another embodiment of the invention.
  • the washing machine (1) comprises a body (2), a drum (3) provided in the body (2), in which the laundry to be washed are placed, and a tub (4) in which the drum (3) moves and washing is performed.
  • the drum (3) is rotated in the tub (4) containing the washing water with detergent, so that the laundry colliding the walls of the drum (3) are cleaned both mechanically and chemically.
  • the washing machine (1) of the invention comprises an insulation member (5) with hydrophilic properties, placed on the inner surface of the tub (4), enabling formation of an insulating layer on the inner wall of the tub (4) by sucking and entrapping within a portion of the water in the tub (4).
  • the insulation member (5) is fixed on the side and rear walls of the tub (4) so as to cover the inner surface of the tub (4) at least partially. A portion of the water received in the tub (4) is sucked by the insulation member, enabling formation of a thin and stationary water layer on the tub (4) wall by being entrapped in the insulation member (5).
  • the water contacting the inner wall of the tub (4) is enabled to stay stationary without being affected from the flow in the tub (4), reducing the amount of water contacting the inner wall of the tub (4).
  • a higher amount of heat is maintained in the water by reducing the amount of heat transferred from the water to the tub (4), obtaining an effective thermal insulation.
  • the insulation member (5) is made of a material comprising enclosed gas cells (9).
  • the insulation member (5) comprises closed cells (9) in which air or preferably gasses with lower thermal conduction coefficient such as nitrogen, are entrapped.
  • the amount of heat transferred to the tub (4) is further reduced by utilizing low thermal conduction properties of gasses, increasing efficiency of insulation.
  • the noise generated by the motion of the water in the tub (4) is also insulated by means of the cellular (9) structure of the insulation member (5).
  • the insulation member (5) covers the inner surface of the tub (4) up to the maximum level of the water in the tub (4) so as to cover the surfaces of the tub (4) contacting water.
  • the insulation member (5) is placed on the side and rear walls of the tub (4) so as to cover the lower half of the tub (4) almost completely. The insulation member (5) is thus placed only on the surfaces of the tub (4) contacting water, avoiding waste of material as well as saving mounting and labor costs.
  • a heater (6) is provided between the drum (3) and the tub (4), and the portion of the insulation member (5) facing the heater (6) has a lower thickness than its other portions, so as to leave a safe distance in between with the heater (6).
  • the heater (6) heating the water in the tub (4) is provided below the drum (3) so as to be interposed between the drum (3) and the tub (4).
  • the thickness of the portion of the insulation member (5) being opposed to the heater (6) is reduced. By this, the distance between the insulation member (5) and the heater (6) is increased, preventing safety vulnerabilities and operational defects such the insulation member (5) being burnt or being deformed in time due to high temperatures.
  • the tub (4) comprises at least one fixing means (7) provided on its inner surface, and at least one bore (8) is provided on the insulation member (5), enabling fixing of the insulation member (5) to the inner surface of the tub (4) by being penetrated by the fixing means (7).
  • the fixing means (7) provided on the tub (4) has a large headed pin shape and extends into the tub (4).
  • the insulation member (5) is attached to the inner walls of the tub (4) by the bores (8) provided thereon being penetrated by the fixing means (7). By this, the insulation member (5) is rapidly and simply fixed to the inner surface of the tub (4).
  • the insulation member (5) is fixed to the inner surface of the tub (4) by being adhered.
  • a heat and water resistant adhesive is spread on the inner surface of the tub (4), and the insulation member (5) is adhered to the tub (4) by being placed on the surfaces on which the adhesive is spread.
  • an additional adhesive layer is provided between the tub (4) and the insulation member (5), thereby enhancing the thermal insulation performance.
  • a fixing means (7) such as a pin or a screw is not required to fix the insulation member (5) on the tub (4).
  • the insulation member (5) is made of synthetic rubber material.
  • a low-cost, high strength insulation member (5) is obtained which enables ease of mounting thanks to its flexibility.
  • a low-cost, simple structured insulation member (5) is obtained which enables reducing of the amount of heat transferred from the washing water to the tub (4).
  • a washing machine (1) is obtained in which washing is performed rapidly and saving energy by reducing the operation time of the heater (6) heating water.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The present invention relates to a washing machine (1) comprising a body (2), a drum (3) provided in the body (2), in which the laundry to be washed are placed, and a tub (4) in which the drum (3) is actuated and washing is performed.

Description

A WASHING MACHINE WITH REDUCED ENERGY CONSUMPTION
The present invention relates to a washing machine whose energy consumption is reduced by enhancing its insulation efficiency.
In washing machines, the washing water is generally heated to a certain temperature in order to enhance the cleaning efficiency and to dissolve the detergent completely. In washing machines, the highest energy consumption occurs during heating of water. However, a major portion of the energy used to heat water is transmitted to the tub, and is lost by being transmitted to the outer environment due to the inconvenient thermal properties of the material the tub is made of. Therefore, the amount of energy and time spent to bring the washing water to a certain temperature, increases. Applications in which the tub or the drum is clad by insulation materials are present in the state of the art. However, the materials clad on the tub cannot prevent thermal energy loss efficiently as they draw a certain amount heat from the tub.
State of the art German patent document no. DE10160788 discloses a thermal insulation member clad on the inner surface of the drum so as to stay under a protecting layer.
Another state of the art German patent document no. DE4332684 mentions a thermal insulation member placed on the inner surface of the tub.
The aim of the present invention is to realize a washing machine with improved heat insulation efficiency.
The washing machine realized to achieve the aim of the present invention and disclosed in the claims, has a body, a tub provided in the body in which the washing water is filled, and a drum provided in the tub, in which the laundry is placed.
The washing machine of the invention comprises an insulation member made of hydrophilic material, fixed on the tub so as to cover the inner surface of the tub at least partially, enabling formation of a thermal boundary layer on the inner wall of the tub by entrapping the washing water in the tub. By this, the thermal energy loss of the drum is effectively reduced.
In an embodiment of the invention, the insulation member is made of a material comprising gas cells. Thus, the gas cells filed with gases preferably with low thermal conduction coefficient, enable keeping the thermal energy inside the tub, increasing the efficiency of insulation.
In another embodiment of the invention, the insulation member covers the inner wall of the tub up to the maximum level reached by the water filled in the tub. By this, the insulation member is placed on the surfaces of the tub contacting water, providing a cost advantage.
In another embodiment of the invention, the thickness of the portions of the insulation member being opposed to the heater, is reduced so as to obtain a thinner insulation layer. By this, the distance between the insulation member and the heater is increased, avoiding likely safety problems.
In another embodiment of the invention, a plurality of fixing means are provided on the inner surface of the tub, and the insulation member has a plurality of bores through which the fixing means penetrate. The insulation member is thus easily fixed to the inner wall of the tub.
In another embodiment of the invention, the insulation member is fixed to the inner wall of the tub by being adhered by means of a thermal and water resistant adhesive. By means of the adhesive, a further insulation layer is formed between the tub and water, reducing the amount of heat transferred from water to the tub.
With the present invention, a washing machine is obtained in which thermal energy is used efficiently.
The washing machine realized to achieve the aims of the present invention is illustrated in the accompanying drawings, wherein:
Figure 1 is a schematic view of the washing machine of the invention.
Figure 2 is a partial schematic view of an insulation member according to an embodiment of the invention.
Figure 3 is a partial schematic view of the insulation member and the fixing means according to another embodiment of the invention.
The elements in the figures are numbered individually and the correspondence of these numbers are given hereinafter.
  1. Washing machine
  2. Body
  3. Drum
  4. Tub
  5. Insulation member
  6. Heater
  7. Fixing means
  8. Bore
  9. Cell
Hm: maximum water level
The washing machine (1) comprises a body (2), a drum (3) provided in the body (2), in which the laundry to be washed are placed, and a tub (4) in which the drum (3) moves and washing is performed. The drum (3) is rotated in the tub (4) containing the washing water with detergent, so that the laundry colliding the walls of the drum (3) are cleaned both mechanically and chemically.
The washing machine (1) of the invention comprises an insulation member (5) with hydrophilic properties, placed on the inner surface of the tub (4), enabling formation of an insulating layer on the inner wall of the tub (4) by sucking and entrapping within a portion of the water in the tub (4). The insulation member (5) is fixed on the side and rear walls of the tub (4) so as to cover the inner surface of the tub (4) at least partially. A portion of the water received in the tub (4) is sucked by the insulation member, enabling formation of a thin and stationary water layer on the tub (4) wall by being entrapped in the insulation member (5). Thus, the water contacting the inner wall of the tub (4), is enabled to stay stationary without being affected from the flow in the tub (4), reducing the amount of water contacting the inner wall of the tub (4). By this, a higher amount of heat is maintained in the water by reducing the amount of heat transferred from the water to the tub (4), obtaining an effective thermal insulation.
In an embodiment of the invention, the insulation member (5) is made of a material comprising enclosed gas cells (9). The insulation member (5) comprises closed cells (9) in which air or preferably gasses with lower thermal conduction coefficient such as nitrogen, are entrapped. In this embodiment, the amount of heat transferred to the tub (4) is further reduced by utilizing low thermal conduction properties of gasses, increasing efficiency of insulation. In addition, the noise generated by the motion of the water in the tub (4) is also insulated by means of the cellular (9) structure of the insulation member (5).
In another embodiment of the invention, the insulation member (5) covers the inner surface of the tub (4) up to the maximum level of the water in the tub (4) so as to cover the surfaces of the tub (4) contacting water. The insulation member (5) is placed on the side and rear walls of the tub (4) so as to cover the lower half of the tub (4) almost completely. The insulation member (5) is thus placed only on the surfaces of the tub (4) contacting water, avoiding waste of material as well as saving mounting and labor costs.
In another embodiment of the invention, a heater (6) is provided between the drum (3) and the tub (4), and the portion of the insulation member (5) facing the heater (6) has a lower thickness than its other portions, so as to leave a safe distance in between with the heater (6). The heater (6) heating the water in the tub (4), is provided below the drum (3) so as to be interposed between the drum (3) and the tub (4). The thickness of the portion of the insulation member (5) being opposed to the heater (6), is reduced. By this, the distance between the insulation member (5) and the heater (6) is increased, preventing safety vulnerabilities and operational defects such the insulation member (5) being burnt or being deformed in time due to high temperatures.
In another embodiment of the invention, the tub (4) comprises at least one fixing means (7) provided on its inner surface, and at least one bore (8) is provided on the insulation member (5), enabling fixing of the insulation member (5) to the inner surface of the tub (4) by being penetrated by the fixing means (7). The fixing means (7) provided on the tub (4) has a large headed pin shape and extends into the tub (4). The insulation member (5) is attached to the inner walls of the tub (4) by the bores (8) provided thereon being penetrated by the fixing means (7). By this, the insulation member (5) is rapidly and simply fixed to the inner surface of the tub (4).
In another embodiment of the invention, the insulation member (5) is fixed to the inner surface of the tub (4) by being adhered. In this embodiment, a heat and water resistant adhesive is spread on the inner surface of the tub (4), and the insulation member (5) is adhered to the tub (4) by being placed on the surfaces on which the adhesive is spread. By this, an additional adhesive layer is provided between the tub (4) and the insulation member (5), thereby enhancing the thermal insulation performance. Furthermore, an ease of production is also provided as a fixing means (7) such as a pin or a screw is not required to fix the insulation member (5) on the tub (4).
In another embodiment of the invention, the insulation member (5) is made of synthetic rubber material. Thus, a low-cost, high strength insulation member (5) is obtained which enables ease of mounting thanks to its flexibility.
With the invention, a low-cost, simple structured insulation member (5) is obtained which enables reducing of the amount of heat transferred from the washing water to the tub (4). By this, a washing machine (1) is obtained in which washing is performed rapidly and saving energy by reducing the operation time of the heater (6) heating water.

Claims (7)

  1. A washing machine (1) comprising a body (2), a drum (3) provided in the body (2), in which the laundry to be washed are placed and a tub (4) in which the drum (3) moves and washing is performed, characterized by an insulation member (5) with hydrophilic properties, placed on the inner surface of the tub (4), enabling formation of an insulating layer on the inner wall of the tub (4) by sucking and entrapping within a portion of the water in the tub (4).
  2. A washing machine (1) according to claim 1, characterized by the insulation member (5) made of a material comprising closed gas cells (9).
  3. A washing machine (1) according to claim 1 or claim 2, characterized by the insulation member (5) covering the inner surface of the tub (4) up to the maximum level of water in the tub (4) so as to cover the surfaces of the tub (4) contacting water.
  4. A washing machine (1) according to any one of the preceding claims, characterized by a heater (6) provided between the drum (3) and the tub (4) and the insulation member (5) whose portion facing the heater (6) has a lower thickness than its other portions, so as to leave a safe distance in between with the heater (6).
  5. A washing machine (1) according to any one of the preceding claims, characterized by at least one fixing means (7) provided on the inner surface of the tub (4) and at least one bore (8) provided on the insulation member (5), enabling fixing of the insulation member (5) to the inner surface of the tub (4) by being engaged on the fixing means (7).
  6. A washing machine (1) according to any one of claim 1 to claim 4, characterized by the insulation member (5) fixed by being adhered to the inner surface of the tub (4).
  7. A washing machine (1) according to any one of the preceding claims, characterized by the insulation member (5) made of synthetic rubber material.
PCT/EP2017/077845 2016-11-08 2017-10-31 A washing machine with reduced energy consumption Ceased WO2018086955A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TRA2016/16020 2016-11-08
TR201616020 2016-11-08

Publications (1)

Publication Number Publication Date
WO2018086955A1 true WO2018086955A1 (en) 2018-05-17

Family

ID=60191400

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/077845 Ceased WO2018086955A1 (en) 2016-11-08 2017-10-31 A washing machine with reduced energy consumption

Country Status (1)

Country Link
WO (1) WO2018086955A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4332684A1 (en) 1993-09-25 1995-03-30 Licentia Gmbh Washing machine
DE10160788A1 (en) 2001-12-11 2003-06-26 Bsh Bosch Siemens Hausgeraete Domestic clothes washing machine outer drum has a heat insulating inner lining with a protective surface covering
DE102008026453A1 (en) * 2008-06-03 2009-12-10 Miele & Cie. Kg Laundry treatment machine i.e. washing machine, has plastic leaching container with thermal insulation, which is made of metallic foil and/or plastic foil coated with metal and is attached to external side of plastic leaching container
EP2392718A1 (en) * 2010-06-01 2011-12-07 Electrolux Home Products Corporation N.V. Washing machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4332684A1 (en) 1993-09-25 1995-03-30 Licentia Gmbh Washing machine
DE10160788A1 (en) 2001-12-11 2003-06-26 Bsh Bosch Siemens Hausgeraete Domestic clothes washing machine outer drum has a heat insulating inner lining with a protective surface covering
DE102008026453A1 (en) * 2008-06-03 2009-12-10 Miele & Cie. Kg Laundry treatment machine i.e. washing machine, has plastic leaching container with thermal insulation, which is made of metallic foil and/or plastic foil coated with metal and is attached to external side of plastic leaching container
EP2392718A1 (en) * 2010-06-01 2011-12-07 Electrolux Home Products Corporation N.V. Washing machine

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