EP2034083A2 - Filter device of washing machine - Google Patents

Filter device of washing machine Download PDF

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Publication number
EP2034083A2
EP2034083A2 EP08158571A EP08158571A EP2034083A2 EP 2034083 A2 EP2034083 A2 EP 2034083A2 EP 08158571 A EP08158571 A EP 08158571A EP 08158571 A EP08158571 A EP 08158571A EP 2034083 A2 EP2034083 A2 EP 2034083A2
Authority
EP
European Patent Office
Prior art keywords
cap
filter
reed switch
washing machine
filter device
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Withdrawn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
EP08158571A
Other languages
German (de)
English (en)
French (fr)
Inventor
Hidetoshi Wakamatsu
Tsuyoshi Fukuda
Masaaki Toda
Takayuki Ishihara
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 EP2034083A2 publication Critical patent/EP2034083A2/en
Withdrawn legal-status Critical Current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 
    • D06F39/10—Filtering arrangements

Definitions

  • the present invention relates to a filter device for catching foreign matters such as lint included in drain water from a washing machine, and the like.
  • Fig. 7 is an appearance view showing a washing machine having a filter device in accordance with a conventional technology.
  • Fig. 8 is a perspective view showing a surrounding of the filter device, showing a state in which a lid is opened.
  • Fig. 9 is a sectional view showing the filter device; and
  • Fig. 10 is a front view showing a lid portion of the filter device.
  • lid 101 is provided in the lower right part of the front surface of main body 1 of the washing machine, and a filter device described below is disposed in the inner side of lid 101.
  • Fig. 8 shows a state in which lid 101 is opened.
  • Lid 101 is generally formed as a plastic molded member, and pivotally supported rotatably on the lower end in a way in which the upper end side is closed in the direction of arrow J around the lower end as a center.
  • a single line of rib 102 extending slantingly and hook 103 whose tip is processed in a hook shape are protruded on the rear surface of lid 101.
  • cap 35 to be operated when the filter device is taken out or mounted on main body 1 is disposed in the inner side of lid 101.
  • holding part 35b for rotating cap 35 is protruded together with cap 35.
  • diameter expanding part 47 whose diameter is increased with stepped part 34d is provided at the front part (left side in Fig. 9 ) of cylindrical filter case 34.
  • Diameter expanding part 47 has screw 37.
  • Cap 35 is secured to filter case 34 by screw 37 via water sealing packing 42 formed of an elastic body such as rubber.
  • convex engage part 35a In the rear side (right side in Fig. 9 ) of cap 35, convex engage part 35a is formed, and concave engage part 36a attached by latching to convex engage part 35a is integrated with filter body 36. Then, by engaging convex engage part 35a and concave engage part 36a with each other, cap 35 and filter body 36 are linked to each other. Therefore, by rotating cap 35 and detaching it from screw 37, filter body 36 can be taken out from filter case 34, that is, main body 1 of the washing machine.
  • Net-like net part 51 is formed in a cylindrical shape on filter body 36 so that it allows water to pass and catches foreign matters.
  • Filter body 36 is disposed between inlet hole 38 and outlet hole 39 of filter case 34 inside filter case 34.
  • drain wash water containing foreign matters passes from inlet hole 38 thorough net part 51 and flown out to the outside from outlet hole 39 via a drain route in a state in which the foreign matters are removed.
  • cap 35 is rotated, filter body 36 is taken out from filter case 34, and then lint and the like retained in filter body 36 is removed. Thereafter, cap 35 is normally secured to the original position of filter case 34, and thereby water must be prevented from leaking from this part.
  • Cap 35 has caved part 351 that is caved in a shape of a cup at the side of lid 101 thereof.
  • Holding part 35b which is also shown in the perspective view of Fig. 8 , is protruded in a way in which it passes the center of the substantially circular-shaped caved surface and extends in the diameter direction.
  • latch hole 104 into which hook 103 is inserted and latched is provided in the portion corresponding to hook 103 of lid 101 of main body 1.
  • the front view of lid 101 of Fig. 10 shows a state in which lid 101 is normally closed.
  • central angle ⁇ is an angle which holding part 35b is rotated from reference line 105. That is to say, when holding part 35b is located in the position in which central angle ⁇ is approximately 90°, lid 101 is closed in the direction of arrow J of Fig. 8 . Then, as shown by a broken line of Figs. 9 and 10 , rib 102 on lid 101 and holding part 35b on cap 35 are not brought into contact with each other, so that lid 101 can be completely closed. At this time, since hook-shaped part at the tip of hook 103 is latched to latch hole 104, lid 101 cannot be easily opened even if an external force is applied from the outside of the washing machine.
  • cap 35 is correctly mounted and thereby water leakage can be prevented is judged based on the premise that a user confirms the closing state of lid 101, that is, the state in which lid 101 is correctly mounted on main body 1.
  • lid 101 is generally formed of, for example, a plastic molded material, and the position in which lid 101 is disposed is generally in the lower part of a washing machine. Therefore, when a foot of a user or a family member who walks in the vicinity of the washing machine hits the position, or when a user pushes lid 101 forcedly without recognizing the fastening failure of cap 35, lid 101 may be broken or lid 101 may be detached from a washing machine main body. In such a state, it is not possible to confirm whether or not water leakage is prevented.
  • a filter device of the present invention is made in order to solve conventional problems mentioned above and ensures prevention of water leakage when a washing machine is used by detecting a mounting state of a cap of a filter without an influence of the presence of a lid and notifying a user of an abnormality when a cap is not mounted completely.
  • a filter device of a washing machine of the present invention includes a cap opened and closed when foreign matters are removed from the filter device, a filter case to which the cap is mounted, and an electric signal transmitter-receiver operating in the normal position provided to the filter case.
  • a cap opened and closed when foreign matters are removed from the filter device, a filter case to which the cap is mounted, and an electric signal transmitter-receiver operating in the normal position provided to the filter case.
  • the filter device of the washing machine of the present invention can prevent water from leaking.
  • Fig. 1 is an appearance view showing a washing machine having a filter device in accordance with a first embodiment of the present invention.
  • Fig. 2 is a sectional view showing a state in which the filter device is mounted.
  • Fig. 3 is a sectional view showing a state in which the filter device is not mounted completely.
  • Figs. 4A to 4D are plan views showing an operation of the filter device in a state in which a cap is mounted.
  • Fig. 5 is a partial sectional view showing an operation of the filter device in a state in which a cap is mounted.
  • Fig. 6 is a part of a control flow chart of the washing machine.
  • concave portion 7 is formed in the lower part on the front surface of main body 1 of the washing machine, and cap 2 whose planer shape is substantially circular for the operation of a filter device for removing foreign matters such as lint in drain water is provided in concave portion 7.
  • Cap 2 has a configuration capable of moving in the rotation direction for attaching / detaching the below-mentioned filter device and in the axis direction for removing filter device.
  • control device 3 Inside of the upper part of main body 1, control device 3 incorporating a microcomputer and the like for controlling a series of processes including washing, rinsing, dehydration, and the like, is provided. Furthermore, on the upper part on the front surface of main body 1, switch part 4 for inputting an operation course and the like into control device 3, and display 5 for notifying a user of an operation state, remaining time, and the like, are disposed. On the lower part of the right side surface of main body 1, drain hose 6 for discharging wash water is connected.
  • cap 2 is accommodated in concave portion 7 formed in main body 1 in a way in which cap 2 does not protrude to the outside from outer line 8.
  • Minus-sign shaped knob 9 is integrated with cap 2 in the front surface side (left side in Fig. 2 ) of main body 1 so that a user picks it by the fingers and rotates it.
  • filter body 11 having net-like net portion 10 allowing water to pass and catching foreign matters is connected to the rear side, that is, the inner side of main body 1 in a way in which concave engage part 16 formed on filter body 11 is rotatably attached by latching to convex engage part 15 formed on cap 2 them each other.
  • Cap 2 and filter body 11 are accommodated in the inside of filter case 14 having inlet hole 12 and outlet hole 13.
  • O-ring 18 formed of an elastic body such as rubber is mounted on the outer periphery of outer peripheral cylindrical part 17 of the connection part at the side of cap 2 of filter body 11, and it is brought into close contact with inclined wall 19 of filter case 14. Thus, water sealing is carried out.
  • Cylindrical part 20 having a large diameter is integrated with the side of concave portion 7 of main body 1 accommodating filter case 14, and cap 2 is rotatably accommodated in cylindrical part 20.
  • a plurality of projected part 21 are formed on the inner peripheral part of cylindrical part 20, a plurality of projected part 21 are formed. Projected part 21 push protrusions 22 provided on outer peripheral part 23 of cap 2 toward the side of filter body 11.
  • O-ring 18 is pressed to inclined wall 19 via outer peripheral cylindrical part 17, thereby water-sealing the wash water inside filter case 14 from the outside.
  • Magnetic body 24 is accommodated in a part of outer peripheral part 23 of cap 2, and attaching plate 25 is integrated with the upper part of the outer periphery of cylindrical part 20 of filter case 14. Then, reed switch 26 is attached to attaching plate 25 on the upper part of the outer periphery of cylindrical part 20.
  • reed switch 26 is disposed so that magnetic corresponding operation part 27 disposed inside of reed switch 26 can be closely positioned with respect to the position of magnetic body 24.
  • Fig. 4A shows a preparation position, that is, a state before cap 2 is mounted.
  • reed switch 26 and magnetic corresponding operation part 27 are positioned right above cap 2 in the circumferential direction (in the direction of the 12 o'clock position) since they are attached in the vicinity of attaching plate 25 provided on the upper part of cylindrical part 20 of filter case 14.
  • magnetic body 24 attached to cap 2 is positioned in the left direction with ⁇ of approximately 90° (in the direction of the 9 o'clock position).
  • Knob 9 of cap 2 is set so that the minus-sign shape is directed substantially vertically.
  • Protrusion 22 having stopper 30 in one end and a shape with width D is provided on the lower part, and similarly, second protrusion 22e having a symmetrical shape is provided on the opposite side at 180°.
  • the position of projected part 21 provided in the inner periphery of cylindrical part 20 of filter case 14 is set so as to have a gap by dimension C from the left end of width D of protrusion 22 of cap 2 in the rotation direction.
  • Fig. 4B shows a state of ⁇ ofapproximately 45° in which cap 2 is rotated clockwise only 45° by using knob 9.
  • Protrusion 22 of cap 2 enters behind projected part 21 on the inner peripheral part of cylindrical part 20 of filter case 14 as shown in the sectional view of Fig. 2 .
  • magnetic body 24 and magnetic corresponding operation part 27 inside reed switch 26 are displaced from each other by about 45° in the angle direction and apart from each other, magnetic corresponding operation part 27 does not detect magnetic body 24.
  • cap 2 when cap 2 is rotated by about 80° from the state of Fig. 4A and the state is changed into state of Fig. 4C , firstly, the water-sealing effect of O-ring 18 occurs.
  • magnetic body 24 and magnetic corresponding operation part 27 in reed switch 26 are displaced from each other by ⁇ of approximately 10° in the angle direction, magnetic corresponding operation part 27 starts to detect magnetic body 24. Therefore, reed switch 26 starts to detect ON and at the same time, cap 2, filter body 11 and O-ring 18 disposed therebetween, and the like, are configured in the axis direction approximate to the sectional view of Fig. 2 .
  • Fig. 5 is a partial sectional view seen from the direction of arrow A of Fig. 4B . Based on Fig. 5 , the relation in the axis direction between protrusion 22 on cap 2 and projected part 21 on cylindrical part 20 of filter case 14 is described.
  • Protrusion 22 has three kinds of heights in the range of width D, that is, thin part 22a, inclined part 22b, and pressing part 22c from the side of operation portion 22d. Then, gap E formed by pressing part 22c and collar 31 is set to be approximate to or slightly larger than thickness dimension F of projected part 21 of filter case 14.
  • cap 2 and inclined part 22b slide, and entire cap 2 moves in the direction of arrow G with respect to the fixed side of projected part 21, projected part 21 presses outer peripheral cylindrical part 17 of filter body 11 of Fig. 2 , and the water sealing effect of O-ring 18 is exhibited.
  • Point K as an end part of inclined part 22b is set so that ⁇ is approximately 10° in Fig. 4C and the water sealing effect by O-ring 18 occurs earlier than an ON operation by reed switch 26.
  • knob 9 when knob 9 is set substantially vertically and insertion is carried out in the axis direction from an arrangement in which projected part 21 and pressing part 22c do not interfere with each other in a plane state, pressing part 22c is disposed at the side of filter body 11 with respect to projected part 21.
  • knob 9 when knob 9 is rotated, as shown in Fig. 2 , O-ring 18 is pressed correctly and reed switch 26 is also operated.
  • filter body 11 is inserted into filter case 14 only in a state in which it is set horizontally, projected part 21 and pressing part 22c interfere with each other.
  • a user puts clothes, detergent, and the like, in a predetermined position of a washing machine, and turns the power switch on (S100), and then sets a course that is desired to be operated (S101).
  • the start switch is turned on and an input operation is carried out (S102), and it is determined whether reed switch 26 of the filter portion is input or not, or whether the reed switch 26 is turned on or off in the following step (S103).
  • reed switch 26 When reed switch 26 is on, the washing machine starts to operate (S104) and proceeds to a series of processes including washing, rinsing, dehydration, and the like.
  • reed switch 26 When reed switch 26 is off, as shown in Fig. 6 , the process is stopped and immediately proceeds to notification of an abnormality (S105).
  • display 5 of Fig. 1 shows, for example, a predetermined set display signifying "Fasten filter portion again" as "notification that abnormality can be corrected by a user's operation," so that a user is notified and an operation of a washing machine is not carried out. Then, it is detected that a user carries out correcting operation and that filter is mounted normally. Then, the step returns to the step of confirming whether reed switch 26 is on or off (S103). When reed switch 26 is on, no new operation is carried out and an operation is started (S104). Thus, the washing process is started.
  • the filter device of the washing machine of the present invention includes filter body 11 disposed in a middle of a drain route and catching foreign matters; cap 2 having knob 9 capable of operating filter body 11 in the rotation direction and the axis direction; and filter case 14 accommodating filter body 11 and cap 2.
  • the filter device further includes reed switch 26 attached to filter case 14 and magnetic body 24 attached to a position corresponding to reed switch 26 of cap 2.
  • the filter device further includes O-ring 18 for water sealing between filter body 11 and filter case 14, and a control device for controlling the process and a display of the washing machine.
  • protrusion 22 whose thickness is changed in the axis direction is provided at the outer periphery of cap 2.
  • Projected part 21 corresponding to protrusion 22 is provided at the inner periphery of cylindrical part 20 of filter case 14 so as to press protrusion 22.
  • O-ring 18 is pressed, and thereby water-sealing between filter case 14 and cap 2 is carried out.
  • Reed switch 26 is turned on when magnetic body 24 attached to cap 2 is located in the position corresponding to reed switch 26 in the rotation direction and the axis direction of cap 2.
  • control device 3 stops proceeding of processes.
  • display 5 notifies that abnormality can be corrected by a user's operation.
  • cap 2 is not located in the predetermined position in the circumferential direction, it cannot be inserted into the predetermined position in filter case 14 in the axis direction.
  • reed switch 26 does not operate.
  • O-ring 18 is pressed and reed switch 26 is turned on.
  • control device 3 distinguishes the abnormality from usual disorder/failure, and notifies that the cap is not attached completely. For example, control device 3 notifies a washing machine user to take a procedure on the display. Therefore, although notification of an abnormality is displayed, since the notification shows that a user can correct the abnormality in a simple and easy manner and a procedure to be taken by a user, the filter device has a configuration that can be easily understood and handled by a user.
  • cap 2 When cap 2 is not located in a predetermined position in the circumferential direction, cap 2 is in the positional relation shown in Fig. 3 in which cap 2 is not mounted completely, so that cap 2 cannot be inserted into a predetermined position of filter case 14 in the axis direction.
  • the dimension in the axis direction between magnetic body 24 in cap 2 and magnetic corresponding operation part 27 in reed switch 26 is out of the range of operation of reed switch 26. Therefore, abnormality information can be notified reliably.
  • control device 3 since an input of the operation of the washing machine is carried out but when a signal from reed switch 26 is not received, control device 3 carries out notification of an abnormality when mounting cannot be carried out completely by a display signifying "Fasten filter portion again” as “notification that abnormality can be corrected by a user's operation.” That is to say, control device 3 distinguishes this abnormality from usual disorder/failure, and notifies that a user can correct the abnormality in a simple and easy manner and procedure to be taken. Then, when the filter device is recovered to a normal state, the operation starts immediately without carrying out a new switching operation. Thus, this configuration is simple and easy for a user to handle.
  • cap 2 When cap 2 is mounted, the rotation operation of cap 2 is carried out as follows, firstly, cap 2 is inserted in the axis direction with knob 9 directed in the vertical direction, and then an operation before the attachment of the filter device to the operation after the filter device is completely mounted are carried out in the range of the rotation angle of approximately 90°. In addition to this configuration, at an end position, stopper 30 is brought into contact with projected part 21, and it is determined whether or not cap 2 is mounted by sense. Therefore, the operation is easy and the rotation force of a user's fingers is easily added to cap 2, so that the reliable operation can be carried.
  • cap 2 in the operation of knob 9 in the rotation direction, the water sealing effect by O-ring 18 is completed, and thereafter, reed switch 26 is turned on.
  • the rotational operation of cap 2 is carried out as follows, that is, firstly, cap 2 is inserted in the axis direction with knob 9 directed in the vertical direction, and at an end position, stopper 30 is brought into contact with projected part 21.
  • stopper 30 is brought into contact with projected part 21.
  • reed switch 26 is attached inside attaching plate 25 formed on the upper part of the outer periphery of cylindrical part 20. Therefore, because reed switch 26 is located in the upper part of cylindrical part 20, there is no risk that dripping of wash water is spread over reed switch 26 part of the electrical equipment member, causing failure in terms of safety, for example, short-circuit or insulation deterioration.
  • reed switch 26 is disposed in the upper part of filter body 11.
  • reed switch 26 is attached inside attaching plate 25 formed on the upper part of the outer periphery of cylindrical part 20. Therefore, there is no risk that the dripping of the wash water is spread over reed switch 26 portion of electrical equipment member, causing failure in terms of safety, for example, short-circuit or insulation deterioration.
  • the filter device of the present invention can simplify prevention of leakage of water during washing. Thus, the filter device is easy to be used.
  • a filter device of a washing machine in accordance with the present invention, an operator can easily carry out attachment/detachment operation of a filter device when foreign matters contained in drain water are manually removed regularly.
  • the filter device of the present invention has a configuration capable of carrying out abnormality information with respect to water leakage due to incomplete attachment in attachment/detachment operation and allowing the following processes to be carried out in a simple and reliable manner. Therefore, the filter device of the present invention is useful because they can be applied and employed in equipment such as a washing machine, accompanied with drain water containing foreign matters.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP08158571A 2007-09-04 2008-06-19 Filter device of washing machine Withdrawn EP2034083A2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007228524A JP2009056263A (ja) 2007-09-04 2007-09-04 洗濯機のフィルター装置

Publications (1)

Publication Number Publication Date
EP2034083A2 true EP2034083A2 (en) 2009-03-11

Family

ID=40092019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08158571A Withdrawn EP2034083A2 (en) 2007-09-04 2008-06-19 Filter device of washing machine

Country Status (5)

Country Link
EP (1) EP2034083A2 (ja)
JP (1) JP2009056263A (ja)
CN (1) CN101381949A (ja)
SG (1) SG150427A1 (ja)
TW (1) TW200934915A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2889420A1 (en) * 2013-12-24 2015-07-01 Dongbu Daewoo Electronics Corporation Wall-mounted washing machine and dispenser therefor
CN107938288A (zh) * 2017-10-31 2018-04-20 青岛海尔洗衣机有限公司 一种具有烘干功能的衣物处理设备及烘干控制方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2325377A1 (en) * 2009-11-23 2011-05-25 Electrolux Home Products Corporation N.V. Washing machine with improved filter for the draining circuit
JP5145321B2 (ja) * 2009-12-14 2013-02-13 パナソニック株式会社 洗濯機
EP2426247A1 (en) * 2010-09-02 2012-03-07 Electrolux Home Products Corporation N.V. Washing machine
JP5836550B2 (ja) * 2011-10-12 2015-12-24 シャープ株式会社 洗濯機
CN104213373A (zh) * 2014-09-18 2014-12-17 江苏海狮机械集团有限公司 洗衣机中的绒毛过滤装置
JP6626772B2 (ja) * 2016-04-12 2019-12-25 日立グローバルライフソリューションズ株式会社 洗濯機
CN109423848B (zh) * 2017-09-01 2023-02-17 青岛海尔洗衣机有限公司 一种排水装置及洗衣机
CN109811515A (zh) * 2017-11-20 2019-05-28 青岛海尔滚筒洗衣机有限公司 一种洗衣机用过滤器盖及洗衣机
CN109853192A (zh) * 2017-11-30 2019-06-07 青岛海尔滚筒洗衣机有限公司 一种洗衣机
CN109957948A (zh) * 2017-12-26 2019-07-02 青岛胶南海尔洗衣机有限公司 一种线屑过滤器锁定方法及洗衣机
JP7045873B2 (ja) * 2018-02-05 2022-04-01 東芝ライフスタイル株式会社 衣類処理装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002282616A (ja) 2001-03-27 2002-10-02 Sharp Corp フィルター装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1530835A (en) * 1977-06-14 1978-11-01 Vnii Pk I Promy Gidroprivodov Liquid filter
JP2006149615A (ja) * 2004-11-29 2006-06-15 Toshiba Corp 洗濯機

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002282616A (ja) 2001-03-27 2002-10-02 Sharp Corp フィルター装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2889420A1 (en) * 2013-12-24 2015-07-01 Dongbu Daewoo Electronics Corporation Wall-mounted washing machine and dispenser therefor
CN107938288A (zh) * 2017-10-31 2018-04-20 青岛海尔洗衣机有限公司 一种具有烘干功能的衣物处理设备及烘干控制方法

Also Published As

Publication number Publication date
TW200934915A (en) 2009-08-16
CN101381949A (zh) 2009-03-11
JP2009056263A (ja) 2009-03-19
SG150427A1 (en) 2009-03-30

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