EP2679717A1 - Machine à laver à tambour - Google Patents

Machine à laver à tambour Download PDF

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Publication number
EP2679717A1
EP2679717A1 EP12749072.0A EP12749072A EP2679717A1 EP 2679717 A1 EP2679717 A1 EP 2679717A1 EP 12749072 A EP12749072 A EP 12749072A EP 2679717 A1 EP2679717 A1 EP 2679717A1
Authority
EP
European Patent Office
Prior art keywords
water
drainage
water tank
washing machine
water level
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.)
Withdrawn
Application number
EP12749072.0A
Other languages
German (de)
English (en)
Other versions
EP2679717A4 (fr
Inventor
Masahiro Itami
Yutaka Inoue
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 Corp
Original Assignee
Panasonic Corp
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 Corp filed Critical Panasonic Corp
Publication of EP2679717A1 publication Critical patent/EP2679717A1/fr
Publication of EP2679717A4 publication Critical patent/EP2679717A4/fr
Withdrawn legal-status Critical Current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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/262—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements made of plastic material, e.g. by injection moulding
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/087—Water level measuring or regulating devices
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering arrangements

Definitions

  • the present invention relates to a drum-type washing machine for washing a load accommodated in a rotary drum.
  • this type of drum-type washing machine is provided with a water level detection structure for detecting a water level in a water tank (for example, refer to Patent Document 1).
  • Fig. 3 is a vertically sectional view showing a configuration of major parts of a conventional drum-type washing machine described in Patent Document 1
  • Fig. 4 is a sectional view showing a water level detector of the conventional drum-type washing machine.
  • a water tank 3 is supported in a washing machine casing 2 via a suspension structure (not shown), and a cylindrical rotary drum 5 with a bottom is rotatably arranged in this water tank 3.
  • a drainage passage 7 for discharging washing water in the water tank 3 is arranged in a bottom of the water tank 3.
  • the water level detector includes an air trap 100 integrated with the drainage passage 7 and a water level sensor (not shown) connected to the air trap 100 by an air tube 104, and the water level of the washing water in the water tank 3 is detected by the water level detector.
  • a connection portion 101 of a drainage tube 107 is coupled to a drainage groove 20 formed in the water tank 3.
  • the drainage tube 107 is integrated with a water level detection tube 108 having a decreased diameter, the water level detection tube being provided with an inclination portion 109 on the lower side, and one end of the water level detection tube 108 is opened in the air trap 100.
  • One end of the drainage tube 107 is coupled to a drainage port 102 and connected to an external drainage tube 103 via a drainage valve 27.
  • Patent Document 1 JP 2005-137645 A
  • the present invention is to solve the above conventional problem, and an object thereof is to provide a drum-type washing machine in which foreign substances such as lint do not easily come into an air trap in a piping structure of a bottom of a water tank, the drum-type washing machine being capable of stably detecting a water level of the water tank.
  • a drum-type washing machine of the present invention comprises:
  • the drum-type washing machine of the present invention in which the foreign substances such as lint do not easily come into the air trap can stably detect the water level of the water tank.
  • a drum-type washing machine comprising:
  • the water level detection tube, the drainage tube, and the connection port of the filter case are substantially horizontally arranged, at the time of draining washing water in the water tank, a water flow from the drainage port of the bottom of the water tank toward the connection port of the filter case through the drainage tube can be straightened.
  • the water level detection tube providing communication between the drainage tube and the opening of the air trap has the inclination portion in the vicinity of the lower side of the drainage port and the water level detection tube has a smaller diameter than the drainage tube.
  • the water flow cannot easily come into the air trap. Therefore, foreign substances such as lint contained in the washing water cannot easily flow into the air trap, so that air pressure in the air trap is stabilized.
  • the water level of the water tank can be stably detected.
  • the drum-type washing machine according to the first aspect, wherein the air trap and the drainage port are further arranged substantially horizontally with respect to the water level detection tube, the drainage tube, and the connection port of the filter case.
  • the drum-type washing machine according to the first or second aspect, wherein the water tank and the air trap are integrally formed from a reinforced plastic material. With such a configuration, the air pressure in the air trap can be more stabilized.
  • Fig. 1 shows a vertically sectional view of a drum-type washing machine in the embodiment of the present invention.
  • a water tank 42 is oscillatably arranged in an interior of a washing machine casing 41, and a rotary drum 43 is rotatably arranged in the water tank 42.
  • a rotation shaft (rotation center axis) 44 arranged in the horizontal direction is provided in a rotation center of the rotary drum 43.
  • a motor 45 attached to the vicinity of the back surface side of the water tank 42 is coupled to this rotation shaft 44 via a belt 46. Rotation drive force of the motor 45 is transmitted to the rotation shaft 44 via the belt 46, so that the rotary drum 43 is driven and rotated in the forward direction or in the reverse direction.
  • a water tank unit 49 as a vibration system includes the water tank 42, the rotary drum 43, the motor 45, and the like.
  • This water tank unit 49 is supported by a plurality of spring bodies 50 from an upper part of the washing machine casing 41 and anti-vibration supported by a plurality of anti-vibration dampers 51 from a lower part of the washing machine casing 41. Thereby, vibration generated in the water tank unit 49 is absorbed, so that transmission to the washing machine casing 41 is suppressed.
  • the washing machine casing 41 has a casing opening 40 into and from which the clothing is brought on a front surface, and this casing opening 40 is openably and closably covered by a lid body 52. Between a front surface of the water tank 42 and an opening edge of the casing opening 40, a seal packing 82 for coupling the both and playing a role of anti-vibration and water sealing is provided.
  • the lid body 52 can seal or open the casing opening 40 via this seal packing 82. By opening this lid body 52, the load can be brought between an exterior of the washing machine casing 41 and the interior of the rotary drum 43 through a clothing outlet/inlet 53 formed on a front surface of the rotary drum 43.
  • This drum-type washing machine has a function of automatically controlling the motor 45, a water supply passage 54, a drainage passage 55, and a water circulation passage 56 in accordance with mode setting and a control program, so as to perform at least a wash step, a rinsing step, and a spin-drying step.
  • the water supply passage 54 is a passage for supplying water supplied from a water source in an exterior of the drum-type washing machine to an interior of the water tank 42.
  • a first water supply hose 59 and a second water supply hose 60 connected to the water source are connected to a detergent accommodating portion 61 accommodating a drawer portion (not shown) storing detergent and softener, the drawer portion to be freely pulled out from the exterior in an interior.
  • a first electromagnetic valve 57 (first water supply portion) is provided in the first water supply hose 59, and a second electromagnetic valve 58 (second water supply portion) is provided in the second water supply hose 60.
  • the detergent accommodating portion 61 is connected to the interior of the water tank 42 through the water supply passage 62.
  • the water supplied from the water source is supplied into the detergent accommodating portion 61 through the first water supply hose 59 or the second water supply hose 60.
  • the water supplied to the interior of the detergent accommodating portion 61 is supplied into the water tank 42 through the water supply passage 62 at a proper time.
  • the drainage passage 55 is a passage for draining the washing water in the water tank 42 to the exterior of the drum-type washing machine.
  • a drainage port 85 is provided in a recessed portion 71 formed in a bottom of the water tank 42, and a drainage tube 64 is connected to this drainage port 85.
  • One end of the drainage tube 64 is connected to a case connection port 89 of a filter case 83.
  • the filter case 83 accommodates a lint filter 65 (drainage filter) for collecting lint, and the lint filter 65 can be removed from the outer side of a lower part on the front surface of the washing machine casing 41 by a filter grip 84.
  • a drainage pump 63 is connected to the filter case 83, and a drainage hose 66 arranged from the interior of the washing machine casing 41 to the upper side of the exterior is connected to the discharge side of the drainage pump 63.
  • the washing water in the water tank 42 flows into the filter case 83 via the drainage tube 64 connected to the recessed portion 71 in the bottom of the water tank 42.
  • the washing water is drained to the exterior of the drum-type washing machine through the drainage pump 63 and the drainage hose 66.
  • the other end of the drainage tube 64 is connected to a water level detection tube 87, and the drainage tube 64 and the water level detection tube 87 are integrated with each other.
  • An inclination portion 86 is provided in the vicinity of the lower side of the drainage port 85 of the water level detection tube 87, and thereby, a diameter of the water level detection tube 87 is formed to be smaller than a diameter of the drainage tube 64.
  • One end of the water level detection tube 87 communicates with an opening 88 of an air trap 74.
  • the drainage tube 64 is preferably made of a soft material such as a rubber material in consideration with a connection property to other members, prevention of leakage from a connection point, and a vibration absorption property of the water tank unit 49 at the time of the spin-drying step.
  • the air trap 74 is integrated with the water tank 42 in a side wall part of an outer periphery on the rear side of the bottom of the water tank 42.
  • An air tube 75 is connected to this air trap 74, and a water level detector 76 such as a pressure sensor or the like is provided on the inner side of the upper part of the washing machine casing 41 so as to be connected to the air trap 74 via the air tube 75.
  • a water level detector 76 such as a pressure sensor or the like is provided on the inner side of the upper part of the washing machine casing 41 so as to be connected to the air trap 74 via the air tube 75.
  • the filter case 83 is arranged in a right lower part on the front surface of the washing machine casing 41 for handleability of the filter grip 84.
  • the drainage port 85 is provided on the right side of a vertical center of the water tank 42 when seen from a front in order to efficiently arrange the drainage tube 64. It should be noted that a piping structure of the bottom will be described later with reference to Fig. 2 .
  • the water circulation passage 56 is a passage for circulating the water in the water tank 42 in order to circulate the water in the water tank 42 in accordance with need such as a time of a pre-wash step, the time of the wash step, and the time of the rinsing step, so as to prevent early dissolution or leaning of the detergent and improve functions of wash and rinsing.
  • the drainage tube 64 and the lint filter 65 also used for the drainage passage 55 are connected to an inflow side passage 68 of a circulation pump 67.
  • a discharge side passage 69 of the circulation pump 67 communicates with the interior of the water tank 42 at jet ports 70 on the inner side of the front surface of the water tank 42.
  • the circulated water discharged into the rotary drum 43 is utilized as the washing water, and circulated again in the water circulation passage 56.
  • the water tank 42 has the circular opening on the front surface, the plurality of jet ports 70 is provided along a circumference of this opening edge, and the circulated water is discharged into the rotary drum 43 from all directions of the circumference of the opening edge.
  • a hot water heater (heating portion) 72 for heating the washing water is arranged in the recessed portion 71 formed in the bottom of the water tank 42.
  • a sheathed heater or the like is used as such a hot water heater 72 and arranged so as to extend in the horizontal direction in the recessed portion 71.
  • the coupling hose 77 plays a role of evacuating the air in the water tank 42 pressurized by a step operation action.
  • a vibration detector 78 for detecting vibration of the water tank unit 49 is arranged.
  • a multiaxis acceleration sensor is used as the vibration detector 78, and detects not acceleration in one direction but vibration in the three-axis directions of the front and rear direction (X axis direction), the left and right direction (Y axis direction), and the up and down direction (Z axis direction) when seen from the front surface side of the drum-type washing machine, so as to control an operation of the drum-type washing machine. This is because actual vibration of the water tank unit 49 cannot always be limited to one direction, and thus the multiaxis acceleration sensor is used for detection with high precision.
  • a user selects modes such as an operation course and various functions in the operation of the drum-type washing machine by making an input to an input setting portion 80 from an operation panel 79 provided in the upper part of the front surface of the washing machine casing 41.
  • a control device 81 is arranged on the inner side of the upper part of the washing machine casing 41, and the control device 81 displays a display corresponding to information inputted through the input setting portion 80 on a display portion (not shown) on the operation panel 79 so as to notify the user.
  • Fig. 2 is a perspective view of major parts when the piping structure such as the drainage passage 55 in the bottom of the water tank 42 of the drum-type washing machine in the embodiment of the present invention is seen from the lower side.
  • the drainage port 85 of the water tank 42 is arranged on the right side of the vertical center of the water tank 42, and the filter case 83 coupled to the one end of the drainage tube 64 which is connected to the drainage port 85 is arranged in the right lower part on the front surface side of the washing machine casing 41.
  • the circulation pump 67 connected to the discharge side passage 69 and the drainage pump 63 connected to the drainage hose 66 are arranged on the left and right sides of the filter case 83.
  • the air trap 74 formed on the rear side of the drainage port 85, the water level detection tube 87, the drainage port 85, the drainage tube 64, and the case connection port 89 of the filter case 83 are substantially horizontally arranged.
  • the water tank 42 and the air trap 74 are integrally formed from a reinforced plastic material such as polypropylene containing glass (for example, formed by integral molding or the like). Therefore, in the wash step and the rinsing step, the air pressure in the air trap 74 is stabilized, so that variation in the water level detected by the water level detector 76 is suppressed.
  • a reinforced plastic material such as polypropylene containing glass
  • the washing water with which the water tank 42 and the drainage passage 55 are filled is drained at once from the drainage hose 66 to the exterior by drive of the drainage pump 63.
  • a strong water flow from the drainage port 85 to the filter case 83 via the drainage tube 64 is generated. Since the air trap 74, the water level detection tube 87, the drainage port 85, the drainage tube 64, and the case connection port 89 of the filter case 83 are substantially horizontally arranged, the water flow is straightened so as to come into the filter case 83. Since the inclination portion 86 is provided in the vicinity of the lower side of the drainage port 85 in the water level detection tube 87, the water level detection tube 87 has a smaller diameter than the drainage tube 64.
  • the water in the drainage tube 64 is suppressed from flowing into the water level detection tube 87.
  • foreign substances such as lint contained in the washing water in the water tank 42 cannot easily be reversed so as to flow into the air trap 74, so that a change in the air pressure due to accumulation of lint and the like over time and consequent instability of the water level are suppressed.
  • the drainage tube 64 is preferably formed from a soft material such as a rubber material.
  • a soft material such as a rubber material.
  • the air trap 74, the water level detection tube 87, the drainage port 85, the drainage tube 64, and the case connection port 89 of the filter case 83 are substantially horizontally arranged, at the time of draining the washing water in the water tank 42, the water flow from the drainage port 85 of the bottom of the water tank 42 toward the case connection port 89 of the filter case 83 through the drainage tube 64 can be straightened. Further, in the water level detection tube 87 providing communication between the drainage tube 64 and the opening 88 of the air trap 74, the inclination portion 86 is provided in the vicinity of the lower side of the drainage port 85 and the water level detection tube 87 has a smaller diameter than the drainage tube 64.
  • the water flow cannot easily come into the air trap 74. Therefore, the foreign substances such as lint contained in the washing water cannot easily flow into the air trap 74, so that the air pressure in the air trap 74 is stabilized.
  • the water level of the water tank 42 can be stably detected by the water level detector 76.
  • the rotation center of the rotary drum 43 is arranged in the horizontal direction in the drum-type washing machine is described above as an example.
  • the rotation center of the rotary drum may be arranged while being inclined with respect to the horizontal direction.
  • a substantially horizontally arranged state includes a state that the members are arranged while being slightly inclined with respect to the horizontal direction to an extent that straightening of the water flow is not essentially influenced in addition to a state that the members are respectively horizontally arranged.
  • the drum-type washing machine according to the present invention in which the foreign substances such as lint do not easily come into the air trap can stably detect the water level of the water tank.
  • the present invention can be applied to a use for a drum-type washing machine and other washing machines.
EP12749072.0A 2011-02-23 2012-02-23 Machine à laver à tambour Withdrawn EP2679717A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011036754A JP6074690B2 (ja) 2011-02-23 2011-02-23 ドラム式洗濯機
PCT/JP2012/001234 WO2012114753A1 (fr) 2011-02-23 2012-02-23 Machine à laver à tambour

Publications (2)

Publication Number Publication Date
EP2679717A1 true EP2679717A1 (fr) 2014-01-01
EP2679717A4 EP2679717A4 (fr) 2014-07-09

Family

ID=46720544

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12749072.0A Withdrawn EP2679717A4 (fr) 2011-02-23 2012-02-23 Machine à laver à tambour

Country Status (4)

Country Link
EP (1) EP2679717A4 (fr)
JP (1) JP6074690B2 (fr)
CN (1) CN102844489B (fr)
WO (1) WO2012114753A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6131167B2 (ja) * 2013-10-18 2017-05-17 日立アプライアンス株式会社 洗濯機
CN104178972B (zh) * 2014-08-14 2017-02-15 松下家电研究开发（杭州）有限公司 衣物处理设备的脱水控制方法及其衣物处理设备
CN106192284A (zh) * 2015-05-05 2016-12-07 安徽聚隆传动科技股份有限公司 一种全自动洗衣机节水装置及其洗衣机
CN106149312A (zh) * 2016-09-23 2016-11-23 珠海格力电器股份有限公司 一种排水与水位检测系统及应用其的滚筒洗衣机
JP7209166B2 (ja) * 2017-10-30 2023-01-20 パナソニックＩｐマネジメント株式会社 食器洗い機
JP6937467B2 (ja) * 2018-02-27 2021-09-22 パナソニックＩｐマネジメント株式会社 洗濯機
JP2019187507A (ja) * 2018-04-18 2019-10-31 パナソニックＩｐマネジメント株式会社 洗濯機
CN109440383A (zh) * 2018-12-06 2019-03-08 无锡小天鹅股份有限公司 衣物处理装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066094A (en) * 1976-03-17 1978-01-03 General Electric Company Combination drain sump and air pressure chamber for automatic clothes washing machine
US4168615A (en) * 1978-05-17 1979-09-25 General Electric Company Clothes washing machine with water recirculation
EP0247918A1 (fr) * 1986-05-27 1987-12-02 Ciapem Cuve à chambre intégrée de compression
GB2236332A (en) * 1989-09-25 1991-04-03 Toshiba Kk Clothes washing machine
EP0885993A1 (fr) * 1997-06-18 1998-12-23 Electrolux Zanussi S.p.A. Machine à laver avec dispositif d'equilibrage
US20040148971A1 (en) * 2002-11-28 2004-08-05 No Yang Hwan Washing machine
US20050097924A1 (en) * 2003-11-10 2005-05-12 Samsung Electronics Co., Ltd. Drum-type washing machine with water level sensing unit
JP2005137645A (ja) * 2003-11-07 2005-06-02 Matsushita Electric Ind Co Ltd ドラム式洗濯機
JP2006255317A (ja) * 2005-03-18 2006-09-28 Sharp Corp 洗濯機
JP2010136740A (ja) * 2008-12-09 2010-06-24 Panasonic Corp 洗濯機

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321809A (en) * 1980-09-04 1982-03-30 General Electric Company Washing machine
JP3162559B2 (ja) * 1993-11-18 2001-05-08 株式会社東芝 脱水兼用洗濯機
JP4995874B2 (ja) 2009-08-07 2012-08-08 パナソニック株式会社 濾過装置および浄水器

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066094A (en) * 1976-03-17 1978-01-03 General Electric Company Combination drain sump and air pressure chamber for automatic clothes washing machine
US4168615A (en) * 1978-05-17 1979-09-25 General Electric Company Clothes washing machine with water recirculation
EP0247918A1 (fr) * 1986-05-27 1987-12-02 Ciapem Cuve à chambre intégrée de compression
GB2236332A (en) * 1989-09-25 1991-04-03 Toshiba Kk Clothes washing machine
EP0885993A1 (fr) * 1997-06-18 1998-12-23 Electrolux Zanussi S.p.A. Machine à laver avec dispositif d'equilibrage
US20040148971A1 (en) * 2002-11-28 2004-08-05 No Yang Hwan Washing machine
JP2005137645A (ja) * 2003-11-07 2005-06-02 Matsushita Electric Ind Co Ltd ドラム式洗濯機
US20050097924A1 (en) * 2003-11-10 2005-05-12 Samsung Electronics Co., Ltd. Drum-type washing machine with water level sensing unit
JP2006255317A (ja) * 2005-03-18 2006-09-28 Sharp Corp 洗濯機
JP2010136740A (ja) * 2008-12-09 2010-06-24 Panasonic Corp 洗濯機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2012114753A1 *

Also Published As

Publication number Publication date
EP2679717A4 (fr) 2014-07-09
CN102844489B (zh) 2015-02-04
JP6074690B2 (ja) 2017-02-08
JP2012170697A (ja) 2012-09-10
CN102844489A (zh) 2012-12-26
WO2012114753A1 (fr) 2012-08-30

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